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_label30_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-22 15:35:44,750 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-22 15:35:44,753 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-22 15:35:44,767 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-22 15:35:44,767 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-22 15:35:44,768 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-22 15:35:44,769 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-22 15:35:44,773 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-22 15:35:44,776 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-22 15:35:44,777 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-22 15:35:44,778 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-22 15:35:44,778 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-22 15:35:44,779 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-22 15:35:44,782 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-22 15:35:44,783 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-22 15:35:44,784 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-22 15:35:44,793 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-22 15:35:44,795 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-22 15:35:44,796 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-22 15:35:44,798 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-22 15:35:44,799 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-22 15:35:44,802 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-22 15:35:44,804 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-22 15:35:44,819 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 15:35:44,844 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-22 15:35:44,845 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-22 15:35:44,845 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-22 15:35:44,846 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-22 15:35:44,846 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-22 15:35:44,847 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-22 15:35:44,850 INFO L133 SettingsManager]: * Use SBE=true [2018-07-22 15:35:44,850 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-22 15:35:44,850 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-22 15:35:44,850 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-22 15:35:44,851 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-22 15:35:44,851 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-22 15:35:44,851 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-22 15:35:44,851 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-22 15:35:44,851 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-22 15:35:44,852 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-22 15:35:44,852 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-22 15:35:44,852 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-22 15:35:44,852 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-22 15:35:44,852 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 15:35:44,853 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-22 15:35:44,854 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-22 15:35:44,854 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-22 15:35:44,854 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-22 15:35:44,855 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-22 15:35:44,855 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-22 15:35:44,855 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-22 15:35:44,855 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-22 15:35:44,855 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-22 15:35:44,912 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-22 15:35:44,929 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-22 15:35:44,933 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-22 15:35:44,934 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-22 15:35:44,934 INFO L276 PluginConnector]: CDTParser initialized [2018-07-22 15:35:44,935 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label30_true-unreach-call.c [2018-07-22 15:35:45,298 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/47339a553/3fabada843064f5189f711636c0dda16/FLAG106c866b7 [2018-07-22 15:35:45,998 INFO L276 CDTParser]: Found 1 translation units. [2018-07-22 15:35:45,999 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label30_true-unreach-call.c [2018-07-22 15:35:46,059 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/47339a553/3fabada843064f5189f711636c0dda16/FLAG106c866b7 [2018-07-22 15:35:46,079 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/47339a553/3fabada843064f5189f711636c0dda16 [2018-07-22 15:35:46,091 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-22 15:35:46,098 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-22 15:35:46,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-22 15:35:46,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-22 15:35:46,108 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-22 15:35:46,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:35:46" (1/1) ... [2018-07-22 15:35:46,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@539793c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:35:46, skipping insertion in model container [2018-07-22 15:35:46,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:35:46" (1/1) ... [2018-07-22 15:35:46,641 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-22 15:35:48,678 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 15:35:48,697 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-22 15:35:50,167 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 15:35:50,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:35:50 WrapperNode [2018-07-22 15:35:50,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-22 15:35:50,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-22 15:35:50,784 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-22 15:35:50,784 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-22 15:35:50,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:35:50" (1/1) ... [2018-07-22 15:35:50,950 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:35:50" (1/1) ... [2018-07-22 15:35:52,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-22 15:35:52,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-22 15:35:52,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-22 15:35:52,769 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-22 15:35:52,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:35:50" (1/1) ... [2018-07-22 15:35:52,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:35:50" (1/1) ... [2018-07-22 15:35:52,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:35:50" (1/1) ... [2018-07-22 15:35:52,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:35:50" (1/1) ... [2018-07-22 15:35:53,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:35:50" (1/1) ... [2018-07-22 15:35:53,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:35:50" (1/1) ... [2018-07-22 15:35:53,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:35:50" (1/1) ... [2018-07-22 15:35:53,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-22 15:35:53,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-22 15:35:53,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-22 15:35:53,769 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-22 15:35:53,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:35:50" (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 15:35:53,835 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-22 15:35:53,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-22 15:35:53,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-22 15:36:12,619 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-22 15:36:12,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:36:12 BoogieIcfgContainer [2018-07-22 15:36:12,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-22 15:36:12,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-22 15:36:12,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-22 15:36:12,626 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-22 15:36:12,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 03:35:46" (1/3) ... [2018-07-22 15:36:12,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f46f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:36:12, skipping insertion in model container [2018-07-22 15:36:12,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:35:50" (2/3) ... [2018-07-22 15:36:12,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f46f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:36:12, skipping insertion in model container [2018-07-22 15:36:12,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:36:12" (3/3) ... [2018-07-22 15:36:12,631 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label30_true-unreach-call.c [2018-07-22 15:36:12,639 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-22 15:36:12,653 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-22 15:36:12,724 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-22 15:36:12,725 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-22 15:36:12,725 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-22 15:36:12,725 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-22 15:36:12,725 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-22 15:36:12,725 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-22 15:36:12,725 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-22 15:36:12,725 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-22 15:36:12,725 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-22 15:36:12,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-07-22 15:36:12,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-07-22 15:36:12,784 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:36:12,785 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 15:36:12,785 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:36:12,790 INFO L82 PathProgramCache]: Analyzing trace with hash 55000978, now seen corresponding path program 1 times [2018-07-22 15:36:12,792 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:36:12,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:36:12,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:36:12,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:36:12,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:36:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:36:13,201 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 15:36:13,204 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:36:13,204 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 15:36:13,208 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 15:36:13,223 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 15:36:13,224 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:36:13,227 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-07-22 15:36:34,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:36:34,004 INFO L93 Difference]: Finished difference Result 6326 states and 12085 transitions. [2018-07-22 15:36:34,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 15:36:34,005 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2018-07-22 15:36:34,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:36:34,061 INFO L225 Difference]: With dead ends: 6326 [2018-07-22 15:36:34,061 INFO L226 Difference]: Without dead ends: 4570 [2018-07-22 15:36:34,073 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 15:36:34,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4570 states. [2018-07-22 15:36:34,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4570 to 4564. [2018-07-22 15:36:34,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4564 states. [2018-07-22 15:36:34,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 7499 transitions. [2018-07-22 15:36:34,309 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 7499 transitions. Word has length 49 [2018-07-22 15:36:34,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:36:34,310 INFO L471 AbstractCegarLoop]: Abstraction has 4564 states and 7499 transitions. [2018-07-22 15:36:34,310 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 15:36:34,311 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 7499 transitions. [2018-07-22 15:36:34,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-07-22 15:36:34,321 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:36:34,322 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, 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] [2018-07-22 15:36:34,322 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:36:34,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1633161244, now seen corresponding path program 1 times [2018-07-22 15:36:34,323 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:36:34,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:36:34,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:36:34,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:36:34,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:36:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:36:34,856 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 15:36:34,857 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:36:34,870 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 15:36:34,872 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 15:36:34,873 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 15:36:34,873 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:36:34,873 INFO L87 Difference]: Start difference. First operand 4564 states and 7499 transitions. Second operand 4 states. [2018-07-22 15:36:56,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:36:56,474 INFO L93 Difference]: Finished difference Result 17552 states and 29056 transitions. [2018-07-22 15:36:56,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 15:36:56,475 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2018-07-22 15:36:56,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:36:56,534 INFO L225 Difference]: With dead ends: 17552 [2018-07-22 15:36:56,534 INFO L226 Difference]: Without dead ends: 12990 [2018-07-22 15:36:56,541 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:36:56,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12990 states. [2018-07-22 15:36:56,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12990 to 8666. [2018-07-22 15:36:56,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8666 states. [2018-07-22 15:36:56,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8666 states to 8666 states and 13862 transitions. [2018-07-22 15:36:56,788 INFO L78 Accepts]: Start accepts. Automaton has 8666 states and 13862 transitions. Word has length 153 [2018-07-22 15:36:56,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:36:56,789 INFO L471 AbstractCegarLoop]: Abstraction has 8666 states and 13862 transitions. [2018-07-22 15:36:56,789 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 15:36:56,790 INFO L276 IsEmpty]: Start isEmpty. Operand 8666 states and 13862 transitions. [2018-07-22 15:36:56,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-07-22 15:36:56,795 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:36:56,795 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 15:36:56,795 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:36:56,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1048162706, now seen corresponding path program 1 times [2018-07-22 15:36:56,796 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:36:56,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:36:56,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:36:56,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:36:56,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:36:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:36:57,186 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 15:36:57,187 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:36:57,187 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 15:36:57,188 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 15:36:57,188 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 15:36:57,188 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:36:57,188 INFO L87 Difference]: Start difference. First operand 8666 states and 13862 transitions. Second operand 4 states. [2018-07-22 15:37:12,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:37:12,489 INFO L93 Difference]: Finished difference Result 33977 states and 54582 transitions. [2018-07-22 15:37:12,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 15:37:12,490 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2018-07-22 15:37:12,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:37:12,594 INFO L225 Difference]: With dead ends: 33977 [2018-07-22 15:37:12,595 INFO L226 Difference]: Without dead ends: 25313 [2018-07-22 15:37:12,606 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 15:37:12,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25313 states. [2018-07-22 15:37:12,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25313 to 16861. [2018-07-22 15:37:12,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16861 states. [2018-07-22 15:37:12,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16861 states to 16861 states and 23360 transitions. [2018-07-22 15:37:12,975 INFO L78 Accepts]: Start accepts. Automaton has 16861 states and 23360 transitions. Word has length 157 [2018-07-22 15:37:12,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:37:12,977 INFO L471 AbstractCegarLoop]: Abstraction has 16861 states and 23360 transitions. [2018-07-22 15:37:12,977 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 15:37:12,977 INFO L276 IsEmpty]: Start isEmpty. Operand 16861 states and 23360 transitions. [2018-07-22 15:37:12,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-22 15:37:12,986 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:37:12,987 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, 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, 1, 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 15:37:12,987 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:37:12,987 INFO L82 PathProgramCache]: Analyzing trace with hash -877140957, now seen corresponding path program 1 times [2018-07-22 15:37:12,987 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:37:12,987 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:37:12,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:37:12,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:37:12,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:37:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:37:13,519 WARN L169 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-07-22 15:37:14,178 WARN L169 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 23 [2018-07-22 15:37:14,366 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-07-22 15:37:14,366 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:37:14,367 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-22 15:37:14,367 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-22 15:37:14,367 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-22 15:37:14,367 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-07-22 15:37:14,368 INFO L87 Difference]: Start difference. First operand 16861 states and 23360 transitions. Second operand 6 states. [2018-07-22 15:37:35,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:37:35,874 INFO L93 Difference]: Finished difference Result 54270 states and 73859 transitions. [2018-07-22 15:37:35,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-22 15:37:35,874 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 240 [2018-07-22 15:37:35,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:37:35,945 INFO L225 Difference]: With dead ends: 54270 [2018-07-22 15:37:35,945 INFO L226 Difference]: Without dead ends: 37411 [2018-07-22 15:37:35,961 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-07-22 15:37:35,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37411 states. [2018-07-22 15:37:36,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37411 to 35992. [2018-07-22 15:37:36,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35992 states. [2018-07-22 15:37:36,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35992 states to 35992 states and 48343 transitions. [2018-07-22 15:37:36,479 INFO L78 Accepts]: Start accepts. Automaton has 35992 states and 48343 transitions. Word has length 240 [2018-07-22 15:37:36,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:37:36,480 INFO L471 AbstractCegarLoop]: Abstraction has 35992 states and 48343 transitions. [2018-07-22 15:37:36,480 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-22 15:37:36,480 INFO L276 IsEmpty]: Start isEmpty. Operand 35992 states and 48343 transitions. [2018-07-22 15:37:36,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2018-07-22 15:37:36,487 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:37:36,489 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:37:36,489 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:37:36,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1832031747, now seen corresponding path program 1 times [2018-07-22 15:37:36,490 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:37:36,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:37:36,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:37:36,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:37:36,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:37:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:37:36,902 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 15:37:36,902 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:37:36,903 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 15:37:36,904 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 15:37:36,904 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 15:37:36,904 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:37:36,905 INFO L87 Difference]: Start difference. First operand 35992 states and 48343 transitions. Second operand 4 states. [2018-07-22 15:37:51,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:37:51,638 INFO L93 Difference]: Finished difference Result 93846 states and 128304 transitions. [2018-07-22 15:37:51,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 15:37:51,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 371 [2018-07-22 15:37:51,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:37:51,736 INFO L225 Difference]: With dead ends: 93846 [2018-07-22 15:37:51,737 INFO L226 Difference]: Without dead ends: 57856 [2018-07-22 15:37:51,771 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 15:37:51,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57856 states. [2018-07-22 15:37:52,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57856 to 57850. [2018-07-22 15:37:52,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57850 states. [2018-07-22 15:37:52,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57850 states to 57850 states and 73763 transitions. [2018-07-22 15:37:52,509 INFO L78 Accepts]: Start accepts. Automaton has 57850 states and 73763 transitions. Word has length 371 [2018-07-22 15:37:52,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:37:52,510 INFO L471 AbstractCegarLoop]: Abstraction has 57850 states and 73763 transitions. [2018-07-22 15:37:52,510 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 15:37:52,510 INFO L276 IsEmpty]: Start isEmpty. Operand 57850 states and 73763 transitions. [2018-07-22 15:37:52,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2018-07-22 15:37:52,537 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:37:52,537 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 15:37:52,538 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:37:52,538 INFO L82 PathProgramCache]: Analyzing trace with hash 63288551, now seen corresponding path program 1 times [2018-07-22 15:37:52,538 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:37:52,538 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:37:52,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:37:52,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:37:52,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:37:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:37:53,806 WARN L169 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-07-22 15:37:54,417 WARN L169 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 21 [2018-07-22 15:37:55,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 657 proven. 4 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2018-07-22 15:37:55,580 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 15:37:55,580 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 15:37:55,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:37:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:37:55,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 15:37:56,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 661 proven. 0 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2018-07-22 15:37:56,837 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 15:37:56,837 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-07-22 15:37:56,839 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 15:37:56,839 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 15:37:56,839 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-22 15:37:56,839 INFO L87 Difference]: Start difference. First operand 57850 states and 73763 transitions. Second operand 5 states. [2018-07-22 15:38:14,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:38:14,957 INFO L93 Difference]: Finished difference Result 127994 states and 160462 transitions. [2018-07-22 15:38:14,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-22 15:38:14,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 822 [2018-07-22 15:38:14,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:38:15,024 INFO L225 Difference]: With dead ends: 127994 [2018-07-22 15:38:15,024 INFO L226 Difference]: Without dead ends: 66042 [2018-07-22 15:38:15,048 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 822 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-22 15:38:15,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66042 states. [2018-07-22 15:38:16,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66042 to 64675. [2018-07-22 15:38:16,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64675 states. [2018-07-22 15:38:16,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64675 states to 64675 states and 75320 transitions. [2018-07-22 15:38:16,157 INFO L78 Accepts]: Start accepts. Automaton has 64675 states and 75320 transitions. Word has length 822 [2018-07-22 15:38:16,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:38:16,158 INFO L471 AbstractCegarLoop]: Abstraction has 64675 states and 75320 transitions. [2018-07-22 15:38:16,158 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 15:38:16,159 INFO L276 IsEmpty]: Start isEmpty. Operand 64675 states and 75320 transitions. [2018-07-22 15:38:16,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 837 [2018-07-22 15:38:16,191 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:38:16,192 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 15:38:16,192 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:38:16,192 INFO L82 PathProgramCache]: Analyzing trace with hash -636188046, now seen corresponding path program 1 times [2018-07-22 15:38:16,192 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:38:16,193 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:38:16,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:38:16,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:38:16,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:38:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:38:17,431 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 311 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-07-22 15:38:17,432 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:38:17,433 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-22 15:38:17,434 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 15:38:17,434 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 15:38:17,434 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 15:38:17,434 INFO L87 Difference]: Start difference. First operand 64675 states and 75320 transitions. Second operand 5 states. [2018-07-22 15:38:39,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:38:39,298 INFO L93 Difference]: Finished difference Result 255126 states and 296976 transitions. [2018-07-22 15:38:39,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 15:38:39,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 836 [2018-07-22 15:38:39,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:38:39,504 INFO L225 Difference]: With dead ends: 255126 [2018-07-22 15:38:39,504 INFO L226 Difference]: Without dead ends: 190453 [2018-07-22 15:38:39,557 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 15:38:39,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190453 states. [2018-07-22 15:38:45,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190453 to 180822. [2018-07-22 15:38:45,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180822 states. [2018-07-22 15:38:45,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180822 states to 180822 states and 201421 transitions. [2018-07-22 15:38:45,508 INFO L78 Accepts]: Start accepts. Automaton has 180822 states and 201421 transitions. Word has length 836 [2018-07-22 15:38:45,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:38:45,509 INFO L471 AbstractCegarLoop]: Abstraction has 180822 states and 201421 transitions. [2018-07-22 15:38:45,509 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 15:38:45,510 INFO L276 IsEmpty]: Start isEmpty. Operand 180822 states and 201421 transitions. [2018-07-22 15:38:45,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 905 [2018-07-22 15:38:45,528 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:38:45,528 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 15:38:45,528 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:38:45,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1642943849, now seen corresponding path program 1 times [2018-07-22 15:38:45,529 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:38:45,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:38:45,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:38:45,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:38:45,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:38:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:38:46,507 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-07-22 15:38:46,507 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:38:46,508 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 15:38:46,509 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 15:38:46,510 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 15:38:46,510 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:38:46,510 INFO L87 Difference]: Start difference. First operand 180822 states and 201421 transitions. Second operand 4 states. [2018-07-22 15:38:57,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:38:57,986 INFO L93 Difference]: Finished difference Result 361645 states and 402848 transitions. [2018-07-22 15:38:57,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 15:38:57,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 904 [2018-07-22 15:38:57,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:38:58,153 INFO L225 Difference]: With dead ends: 361645 [2018-07-22 15:38:58,153 INFO L226 Difference]: Without dead ends: 180825 [2018-07-22 15:38:58,209 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 15:38:58,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180825 states. [2018-07-22 15:39:04,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180825 to 171254. [2018-07-22 15:39:04,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171254 states. [2018-07-22 15:39:04,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171254 states to 171254 states and 184823 transitions. [2018-07-22 15:39:04,840 INFO L78 Accepts]: Start accepts. Automaton has 171254 states and 184823 transitions. Word has length 904 [2018-07-22 15:39:04,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:39:04,841 INFO L471 AbstractCegarLoop]: Abstraction has 171254 states and 184823 transitions. [2018-07-22 15:39:04,841 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 15:39:04,841 INFO L276 IsEmpty]: Start isEmpty. Operand 171254 states and 184823 transitions. [2018-07-22 15:39:04,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1000 [2018-07-22 15:39:04,855 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:39:04,856 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, 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, 3, 3, 3, 3, 3, 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 15:39:04,856 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:39:04,857 INFO L82 PathProgramCache]: Analyzing trace with hash -613397792, now seen corresponding path program 1 times [2018-07-22 15:39:04,858 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:39:04,858 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:39:04,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:39:04,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:39:04,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:39:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:39:06,350 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2018-07-22 15:39:06,350 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:39:06,350 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-22 15:39:06,351 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 15:39:06,351 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 15:39:06,351 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 15:39:06,351 INFO L87 Difference]: Start difference. First operand 171254 states and 184823 transitions. Second operand 5 states. [2018-07-22 15:39:20,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:39:20,490 INFO L93 Difference]: Finished difference Result 453159 states and 493972 transitions. [2018-07-22 15:39:20,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 15:39:20,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 999 [2018-07-22 15:39:20,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:39:20,765 INFO L225 Difference]: With dead ends: 453159 [2018-07-22 15:39:20,765 INFO L226 Difference]: Without dead ends: 281907 [2018-07-22 15:39:20,833 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 15:39:20,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281907 states. [2018-07-22 15:39:23,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281907 to 227254. [2018-07-22 15:39:23,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227254 states. [2018-07-22 15:39:24,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227254 states to 227254 states and 244586 transitions. [2018-07-22 15:39:24,771 INFO L78 Accepts]: Start accepts. Automaton has 227254 states and 244586 transitions. Word has length 999 [2018-07-22 15:39:24,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:39:24,772 INFO L471 AbstractCegarLoop]: Abstraction has 227254 states and 244586 transitions. [2018-07-22 15:39:24,772 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 15:39:24,772 INFO L276 IsEmpty]: Start isEmpty. Operand 227254 states and 244586 transitions. [2018-07-22 15:39:24,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1090 [2018-07-22 15:39:24,795 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:39:24,797 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 15:39:24,797 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:39:24,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1391949964, now seen corresponding path program 1 times [2018-07-22 15:39:24,798 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:39:24,798 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:39:24,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:39:24,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:39:24,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:39:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-07-22 15:39:27,754 INFO L134 CoverageAnalysis]: Checked inductivity of 952 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2018-07-22 15:39:27,755 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:39:27,755 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 15:39:27,756 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 15:39:27,756 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 15:39:27,756 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:39:27,756 INFO L87 Difference]: Start difference. First operand 227254 states and 244586 transitions. Second operand 4 states. [2018-07-22 15:39:27,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-07-22 15:39:27,758 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-22 15:39:27,764 WARN L202 ceAbstractionStarter]: Timeout [2018-07-22 15:39:27,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 03:39:27 BoogieIcfgContainer [2018-07-22 15:39:27,765 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-22 15:39:27,766 INFO L168 Benchmark]: Toolchain (without parser) took 221674.13 ms. Allocated memory was 306.7 MB in the beginning and 2.8 GB in the end (delta: 2.5 GB). Free memory was 223.4 MB in the beginning and 1.2 GB in the end (delta: -928.1 MB). Peak memory consumption was 1.6 GB. Max. memory is 5.3 GB. [2018-07-22 15:39:27,767 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 306.7 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-22 15:39:27,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4683.04 ms. Allocated memory was 306.7 MB in the beginning and 404.8 MB in the end (delta: 98.0 MB). Free memory was 223.4 MB in the beginning and 144.3 MB in the end (delta: 79.1 MB). Peak memory consumption was 220.3 MB. Max. memory is 5.3 GB. [2018-07-22 15:39:27,768 INFO L168 Benchmark]: Boogie Procedure Inliner took 1985.19 ms. Allocated memory was 404.8 MB in the beginning and 684.2 MB in the end (delta: 279.4 MB). Free memory was 144.3 MB in the beginning and 396.0 MB in the end (delta: -251.6 MB). Peak memory consumption was 123.7 MB. Max. memory is 5.3 GB. [2018-07-22 15:39:27,769 INFO L168 Benchmark]: Boogie Preprocessor took 981.95 ms. Allocated memory was 684.2 MB in the beginning and 886.0 MB in the end (delta: 201.9 MB). Free memory was 396.0 MB in the beginning and 590.7 MB in the end (delta: -194.8 MB). Peak memory consumption was 156.2 MB. Max. memory is 5.3 GB. [2018-07-22 15:39:27,769 INFO L168 Benchmark]: RCFGBuilder took 18869.50 ms. Allocated memory was 886.0 MB in the beginning and 1.1 GB in the end (delta: 226.0 MB). Free memory was 590.7 MB in the beginning and 383.6 MB in the end (delta: 207.2 MB). Peak memory consumption was 550.0 MB. Max. memory is 5.3 GB. [2018-07-22 15:39:27,770 INFO L168 Benchmark]: TraceAbstraction took 195143.92 ms. Allocated memory was 1.1 GB in the beginning and 2.8 GB in the end (delta: 1.7 GB). Free memory was 383.6 MB in the beginning and 1.2 GB in the end (delta: -768.0 MB). Peak memory consumption was 924.9 MB. Max. memory is 5.3 GB. [2018-07-22 15:39:27,775 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 306.7 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 4683.04 ms. Allocated memory was 306.7 MB in the beginning and 404.8 MB in the end (delta: 98.0 MB). Free memory was 223.4 MB in the beginning and 144.3 MB in the end (delta: 79.1 MB). Peak memory consumption was 220.3 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 1985.19 ms. Allocated memory was 404.8 MB in the beginning and 684.2 MB in the end (delta: 279.4 MB). Free memory was 144.3 MB in the beginning and 396.0 MB in the end (delta: -251.6 MB). Peak memory consumption was 123.7 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 981.95 ms. Allocated memory was 684.2 MB in the beginning and 886.0 MB in the end (delta: 201.9 MB). Free memory was 396.0 MB in the beginning and 590.7 MB in the end (delta: -194.8 MB). Peak memory consumption was 156.2 MB. Max. memory is 5.3 GB. * RCFGBuilder took 18869.50 ms. Allocated memory was 886.0 MB in the beginning and 1.1 GB in the end (delta: 226.0 MB). Free memory was 590.7 MB in the beginning and 383.6 MB in the end (delta: 207.2 MB). Peak memory consumption was 550.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 195143.92 ms. Allocated memory was 1.1 GB in the beginning and 2.8 GB in the end (delta: 1.7 GB). Free memory was 383.6 MB in the beginning and 1.2 GB in the end (delta: -768.0 MB). Peak memory consumption was 924.9 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 160]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 160). Cancelled while BasicCegarLoop was constructing difference of abstraction (227254states) and interpolant automaton (currently 2 states, 4 states before enhancement), while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 195.0s OverallTime, 10 OverallIterations, 5 TraceHistogramMax, 160.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12083 SDtfs, 47203 SDslu, 3382 SDs, 0 SdLazy, 81384 SolverSat, 19199 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 136.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 868 GetRequests, 836 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 3.8s 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: 19.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 89429 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 6442 NumberOfCodeBlocks, 6442 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 6431 ConstructedInterpolants, 0 QuantifiedInterpolants, 10254385 SizeOfPredicates, 5 NumberOfNonLiveVariables, 962 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 5601/5605 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_label30_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-22_15-39-27-799.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem19_label30_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-22_15-39-27-799.csv Completed graceful shutdown