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/Problem12_label09_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-22 11:41:23,369 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-22 11:41:23,371 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-22 11:41:23,387 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-22 11:41:23,387 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-22 11:41:23,389 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-22 11:41:23,390 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-22 11:41:23,399 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-22 11:41:23,400 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-22 11:41:23,403 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-22 11:41:23,404 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-22 11:41:23,405 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-22 11:41:23,405 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-22 11:41:23,408 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-22 11:41:23,409 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-22 11:41:23,410 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-22 11:41:23,414 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-22 11:41:23,416 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-22 11:41:23,430 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-22 11:41:23,431 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-22 11:41:23,432 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-22 11:41:23,433 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-22 11:41:23,436 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-22 11:41:23,436 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-22 11:41:23,436 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-22 11:41:23,437 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-22 11:41:23,440 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-22 11:41:23,441 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-22 11:41:23,442 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-22 11:41:23,443 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-22 11:41:23,443 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-22 11:41:23,447 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-22 11:41:23,447 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-22 11:41:23,448 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-22 11:41:23,448 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-22 11:41:23,449 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-22 11:41:23,449 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 11:41:23,474 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-22 11:41:23,475 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-22 11:41:23,478 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-22 11:41:23,478 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-22 11:41:23,479 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-22 11:41:23,479 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-22 11:41:23,479 INFO L133 SettingsManager]: * Use SBE=true [2018-07-22 11:41:23,480 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-22 11:41:23,480 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-22 11:41:23,480 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-22 11:41:23,480 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-22 11:41:23,480 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-22 11:41:23,480 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-22 11:41:23,481 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-22 11:41:23,482 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-22 11:41:23,482 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-22 11:41:23,482 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-22 11:41:23,482 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-22 11:41:23,483 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-22 11:41:23,483 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 11:41:23,483 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-22 11:41:23,483 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-22 11:41:23,483 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-22 11:41:23,483 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-22 11:41:23,484 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-22 11:41:23,484 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-22 11:41:23,484 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-22 11:41:23,484 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-22 11:41:23,484 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-22 11:41:23,535 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-22 11:41:23,550 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-22 11:41:23,555 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-22 11:41:23,556 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-22 11:41:23,557 INFO L276 PluginConnector]: CDTParser initialized [2018-07-22 11:41:23,558 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label09_true-unreach-call.c [2018-07-22 11:41:23,955 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/c13f5e3c9/77012cb8656046829ae15138b8c2e0a2/FLAG4a683dccc [2018-07-22 11:41:24,461 INFO L276 CDTParser]: Found 1 translation units. [2018-07-22 11:41:24,462 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label09_true-unreach-call.c [2018-07-22 11:41:24,499 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/c13f5e3c9/77012cb8656046829ae15138b8c2e0a2/FLAG4a683dccc [2018-07-22 11:41:24,525 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/c13f5e3c9/77012cb8656046829ae15138b8c2e0a2 [2018-07-22 11:41:24,537 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-22 11:41:24,544 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-22 11:41:24,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-22 11:41:24,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-22 11:41:24,553 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-22 11:41:24,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:41:24" (1/1) ... [2018-07-22 11:41:24,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20cf718a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:41:24, skipping insertion in model container [2018-07-22 11:41:24,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:41:24" (1/1) ... [2018-07-22 11:41:24,908 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-22 11:41:26,017 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 11:41:26,042 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-22 11:41:26,941 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 11:41:27,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:41:27 WrapperNode [2018-07-22 11:41:27,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-22 11:41:27,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-22 11:41:27,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-22 11:41:27,207 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-22 11:41:27,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:41:27" (1/1) ... [2018-07-22 11:41:27,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:41:27" (1/1) ... [2018-07-22 11:41:27,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-22 11:41:27,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-22 11:41:27,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-22 11:41:27,581 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-22 11:41:27,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:41:27" (1/1) ... [2018-07-22 11:41:27,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:41:27" (1/1) ... [2018-07-22 11:41:27,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:41:27" (1/1) ... [2018-07-22 11:41:27,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:41:27" (1/1) ... [2018-07-22 11:41:28,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:41:27" (1/1) ... [2018-07-22 11:41:28,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:41:27" (1/1) ... [2018-07-22 11:41:28,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:41:27" (1/1) ... [2018-07-22 11:41:28,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-22 11:41:28,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-22 11:41:28,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-22 11:41:28,826 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-22 11:41:28,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:41:27" (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 11:41:28,896 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-22 11:41:28,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-22 11:41:28,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-22 11:41:37,146 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-22 11:41:37,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:41:37 BoogieIcfgContainer [2018-07-22 11:41:37,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-22 11:41:37,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-22 11:41:37,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-22 11:41:37,151 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-22 11:41:37,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:41:24" (1/3) ... [2018-07-22 11:41:37,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782393d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:41:37, skipping insertion in model container [2018-07-22 11:41:37,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:41:27" (2/3) ... [2018-07-22 11:41:37,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782393d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:41:37, skipping insertion in model container [2018-07-22 11:41:37,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:41:37" (3/3) ... [2018-07-22 11:41:37,156 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label09_true-unreach-call.c [2018-07-22 11:41:37,165 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-22 11:41:37,175 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-22 11:41:37,251 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-22 11:41:37,251 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-22 11:41:37,251 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-22 11:41:37,251 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-22 11:41:37,251 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-22 11:41:37,252 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-22 11:41:37,252 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-22 11:41:37,252 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-22 11:41:37,252 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-22 11:41:37,304 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-07-22 11:41:37,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-07-22 11:41:37,318 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 11:41:37,321 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 11:41:37,321 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 11:41:37,327 INFO L82 PathProgramCache]: Analyzing trace with hash -757100326, now seen corresponding path program 1 times [2018-07-22 11:41:37,329 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 11:41:37,330 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 11:41:37,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:41:37,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:41:37,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:41:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:41:37,946 WARN L169 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2018-07-22 11:41:38,270 WARN L169 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 21 [2018-07-22 11:41:38,478 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 11:41:38,480 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 11:41:38,481 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-22 11:41:38,484 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-22 11:41:38,494 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-22 11:41:38,494 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-22 11:41:38,496 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 6 states. [2018-07-22 11:41:53,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 11:41:53,812 INFO L93 Difference]: Finished difference Result 3902 states and 7637 transitions. [2018-07-22 11:41:53,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 11:41:53,813 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2018-07-22 11:41:53,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 11:41:53,855 INFO L225 Difference]: With dead ends: 3902 [2018-07-22 11:41:53,856 INFO L226 Difference]: Without dead ends: 3073 [2018-07-22 11:41:53,864 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-07-22 11:41:53,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3073 states. [2018-07-22 11:41:54,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3073 to 3073. [2018-07-22 11:41:54,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3073 states. [2018-07-22 11:41:54,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3073 states to 3073 states and 4835 transitions. [2018-07-22 11:41:54,104 INFO L78 Accepts]: Start accepts. Automaton has 3073 states and 4835 transitions. Word has length 67 [2018-07-22 11:41:54,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 11:41:54,104 INFO L471 AbstractCegarLoop]: Abstraction has 3073 states and 4835 transitions. [2018-07-22 11:41:54,105 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-22 11:41:54,106 INFO L276 IsEmpty]: Start isEmpty. Operand 3073 states and 4835 transitions. [2018-07-22 11:41:54,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-07-22 11:41:54,113 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 11:41:54,116 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, 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] [2018-07-22 11:41:54,116 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 11:41:54,117 INFO L82 PathProgramCache]: Analyzing trace with hash 2087852650, now seen corresponding path program 1 times [2018-07-22 11:41:54,117 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 11:41:54,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 11:41:54,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:41:54,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:41:54,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:41:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:41:54,767 WARN L169 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 9 [2018-07-22 11:41:54,888 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 59 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 11:41:54,889 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 11:41:54,889 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 11:41:54,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:41:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:41:54,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 11:41:55,089 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 11:41:55,121 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 11:41:55,121 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-07-22 11:41:55,122 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-22 11:41:55,123 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-22 11:41:55,123 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-22 11:41:55,123 INFO L87 Difference]: Start difference. First operand 3073 states and 4835 transitions. Second operand 7 states. [2018-07-22 11:42:17,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 11:42:17,822 INFO L93 Difference]: Finished difference Result 20464 states and 35985 transitions. [2018-07-22 11:42:17,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-22 11:42:17,823 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2018-07-22 11:42:17,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 11:42:17,895 INFO L225 Difference]: With dead ends: 20464 [2018-07-22 11:42:17,895 INFO L226 Difference]: Without dead ends: 15134 [2018-07-22 11:42:17,903 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2018-07-22 11:42:17,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15134 states. [2018-07-22 11:42:18,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15134 to 7584. [2018-07-22 11:42:18,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7584 states. [2018-07-22 11:42:18,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7584 states to 7584 states and 9632 transitions. [2018-07-22 11:42:18,153 INFO L78 Accepts]: Start accepts. Automaton has 7584 states and 9632 transitions. Word has length 139 [2018-07-22 11:42:18,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 11:42:18,156 INFO L471 AbstractCegarLoop]: Abstraction has 7584 states and 9632 transitions. [2018-07-22 11:42:18,156 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-22 11:42:18,157 INFO L276 IsEmpty]: Start isEmpty. Operand 7584 states and 9632 transitions. [2018-07-22 11:42:18,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-07-22 11:42:18,167 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 11:42:18,168 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:18,168 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 11:42:18,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1105531661, now seen corresponding path program 1 times [2018-07-22 11:42:18,168 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 11:42:18,169 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 11:42:18,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:42:18,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:42:18,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:42:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:42:18,617 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-07-22 11:42:18,618 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 11:42:18,618 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 11:42:18,619 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 11:42:18,619 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 11:42:18,619 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 11:42:18,619 INFO L87 Difference]: Start difference. First operand 7584 states and 9632 transitions. Second operand 3 states. [2018-07-22 11:42:24,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 11:42:24,254 INFO L93 Difference]: Finished difference Result 21182 states and 27242 transitions. [2018-07-22 11:42:24,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 11:42:24,255 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 285 [2018-07-22 11:42:24,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 11:42:24,332 INFO L225 Difference]: With dead ends: 21182 [2018-07-22 11:42:24,332 INFO L226 Difference]: Without dead ends: 13600 [2018-07-22 11:42:24,349 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 11:42:24,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13600 states. [2018-07-22 11:42:24,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13600 to 13600. [2018-07-22 11:42:24,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13600 states. [2018-07-22 11:42:24,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13600 states to 13600 states and 16044 transitions. [2018-07-22 11:42:24,663 INFO L78 Accepts]: Start accepts. Automaton has 13600 states and 16044 transitions. Word has length 285 [2018-07-22 11:42:24,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 11:42:24,665 INFO L471 AbstractCegarLoop]: Abstraction has 13600 states and 16044 transitions. [2018-07-22 11:42:24,665 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 11:42:24,665 INFO L276 IsEmpty]: Start isEmpty. Operand 13600 states and 16044 transitions. [2018-07-22 11:42:24,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-07-22 11:42:24,674 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 11:42:24,674 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:24,674 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 11:42:24,675 INFO L82 PathProgramCache]: Analyzing trace with hash -220240638, now seen corresponding path program 1 times [2018-07-22 11:42:24,676 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 11:42:24,676 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 11:42:24,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:42:24,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:42:24,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:42:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:42:25,159 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 129 proven. 4 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-07-22 11:42:25,159 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 11:42:25,159 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 11:42:25,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:42:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:42:25,252 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 11:42:25,308 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 11:42:25,328 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 11:42:25,328 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-07-22 11:42:25,329 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 11:42:25,329 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 11:42:25,329 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 11:42:25,329 INFO L87 Difference]: Start difference. First operand 13600 states and 16044 transitions. Second operand 4 states. [2018-07-22 11:42:30,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 11:42:30,191 INFO L93 Difference]: Finished difference Result 46059 states and 55516 transitions. [2018-07-22 11:42:30,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 11:42:30,231 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 291 [2018-07-22 11:42:30,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 11:42:30,300 INFO L225 Difference]: With dead ends: 46059 [2018-07-22 11:42:30,300 INFO L226 Difference]: Without dead ends: 32461 [2018-07-22 11:42:30,314 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 291 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 11:42:30,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32461 states. [2018-07-22 11:42:30,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32461 to 19616. [2018-07-22 11:42:30,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19616 states. [2018-07-22 11:42:30,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19616 states to 19616 states and 23132 transitions. [2018-07-22 11:42:30,679 INFO L78 Accepts]: Start accepts. Automaton has 19616 states and 23132 transitions. Word has length 291 [2018-07-22 11:42:30,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 11:42:30,679 INFO L471 AbstractCegarLoop]: Abstraction has 19616 states and 23132 transitions. [2018-07-22 11:42:30,680 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 11:42:30,681 INFO L276 IsEmpty]: Start isEmpty. Operand 19616 states and 23132 transitions. [2018-07-22 11:42:30,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-22 11:42:30,688 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 11:42:30,688 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:30,688 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 11:42:30,689 INFO L82 PathProgramCache]: Analyzing trace with hash -468390026, now seen corresponding path program 1 times [2018-07-22 11:42:30,689 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 11:42:30,689 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 11:42:30,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:42:30,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:42:30,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:42:30,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:42:30,984 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 11:42:30,985 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 11:42:30,985 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 11:42:30,985 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 11:42:30,985 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 11:42:30,985 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 11:42:30,985 INFO L87 Difference]: Start difference. First operand 19616 states and 23132 transitions. Second operand 4 states. [2018-07-22 11:42:37,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 11:42:37,525 INFO L93 Difference]: Finished difference Result 47502 states and 56699 transitions. [2018-07-22 11:42:37,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 11:42:37,526 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 296 [2018-07-22 11:42:37,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 11:42:37,563 INFO L225 Difference]: With dead ends: 47502 [2018-07-22 11:42:37,563 INFO L226 Difference]: Without dead ends: 27888 [2018-07-22 11:42:37,586 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 11:42:37,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27888 states. [2018-07-22 11:42:38,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27888 to 27888. [2018-07-22 11:42:38,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27888 states. [2018-07-22 11:42:38,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27888 states to 27888 states and 32482 transitions. [2018-07-22 11:42:38,111 INFO L78 Accepts]: Start accepts. Automaton has 27888 states and 32482 transitions. Word has length 296 [2018-07-22 11:42:38,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 11:42:38,112 INFO L471 AbstractCegarLoop]: Abstraction has 27888 states and 32482 transitions. [2018-07-22 11:42:38,112 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 11:42:38,112 INFO L276 IsEmpty]: Start isEmpty. Operand 27888 states and 32482 transitions. [2018-07-22 11:42:38,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-07-22 11:42:38,128 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 11:42:38,129 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 11:42:38,129 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 11:42:38,129 INFO L82 PathProgramCache]: Analyzing trace with hash 978956563, now seen corresponding path program 1 times [2018-07-22 11:42:38,130 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 11:42:38,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 11:42:38,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:42:38,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:42:38,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:42:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:42:38,638 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-07-22 11:42:38,638 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 11:42:38,638 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 11:42:38,639 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 11:42:38,639 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 11:42:38,639 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 11:42:38,639 INFO L87 Difference]: Start difference. First operand 27888 states and 32482 transitions. Second operand 3 states. [2018-07-22 11:42:43,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 11:42:43,031 INFO L93 Difference]: Finished difference Result 67806 states and 80715 transitions. [2018-07-22 11:42:43,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 11:42:43,032 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 346 [2018-07-22 11:42:43,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 11:42:43,067 INFO L225 Difference]: With dead ends: 67806 [2018-07-22 11:42:43,068 INFO L226 Difference]: Without dead ends: 39920 [2018-07-22 11:42:43,088 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 11:42:43,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39920 states. [2018-07-22 11:42:43,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39920 to 39920. [2018-07-22 11:42:43,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39920 states. [2018-07-22 11:42:43,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39920 states to 39920 states and 47710 transitions. [2018-07-22 11:42:43,516 INFO L78 Accepts]: Start accepts. Automaton has 39920 states and 47710 transitions. Word has length 346 [2018-07-22 11:42:43,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 11:42:43,517 INFO L471 AbstractCegarLoop]: Abstraction has 39920 states and 47710 transitions. [2018-07-22 11:42:43,517 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 11:42:43,517 INFO L276 IsEmpty]: Start isEmpty. Operand 39920 states and 47710 transitions. [2018-07-22 11:42:43,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-07-22 11:42:43,537 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 11:42:43,537 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 11:42:43,537 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 11:42:43,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1687742139, now seen corresponding path program 1 times [2018-07-22 11:42:43,538 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 11:42:43,538 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 11:42:43,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:42:43,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:42:43,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:42:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:42:44,147 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 389 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-07-22 11:42:44,148 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 11:42:44,148 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 11:42:44,149 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 11:42:44,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 11:42:44,149 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 11:42:44,149 INFO L87 Difference]: Start difference. First operand 39920 states and 47710 transitions. Second operand 4 states. [2018-07-22 11:42:49,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 11:42:49,383 INFO L93 Difference]: Finished difference Result 99390 states and 118048 transitions. [2018-07-22 11:42:49,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 11:42:49,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 409 [2018-07-22 11:42:49,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 11:42:49,457 INFO L225 Difference]: With dead ends: 99390 [2018-07-22 11:42:49,458 INFO L226 Difference]: Without dead ends: 58719 [2018-07-22 11:42:49,484 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 11:42:49,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58719 states. [2018-07-22 11:42:50,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58719 to 58719. [2018-07-22 11:42:50,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58719 states. [2018-07-22 11:42:50,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58719 states to 58719 states and 65324 transitions. [2018-07-22 11:42:50,488 INFO L78 Accepts]: Start accepts. Automaton has 58719 states and 65324 transitions. Word has length 409 [2018-07-22 11:42:50,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 11:42:50,489 INFO L471 AbstractCegarLoop]: Abstraction has 58719 states and 65324 transitions. [2018-07-22 11:42:50,489 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 11:42:50,489 INFO L276 IsEmpty]: Start isEmpty. Operand 58719 states and 65324 transitions. [2018-07-22 11:42:50,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2018-07-22 11:42:50,525 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 11:42:50,526 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:50,526 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 11:42:50,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1227682500, now seen corresponding path program 1 times [2018-07-22 11:42:50,527 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 11:42:50,527 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 11:42:50,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:42:50,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:42:50,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:42:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:42:51,032 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 695 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2018-07-22 11:42:51,032 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 11:42:51,033 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 11:42:51,033 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 11:42:51,033 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 11:42:51,034 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 11:42:51,034 INFO L87 Difference]: Start difference. First operand 58719 states and 65324 transitions. Second operand 4 states. [2018-07-22 11:42:56,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 11:42:56,332 INFO L93 Difference]: Finished difference Result 139244 states and 155193 transitions. [2018-07-22 11:42:56,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 11:42:56,332 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 520 [2018-07-22 11:42:56,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 11:42:56,401 INFO L225 Difference]: With dead ends: 139244 [2018-07-22 11:42:56,402 INFO L226 Difference]: Without dead ends: 81279 [2018-07-22 11:42:56,429 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 11:42:56,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81279 states. [2018-07-22 11:42:56,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81279 to 81279. [2018-07-22 11:42:56,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81279 states. [2018-07-22 11:43:00,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81279 states to 81279 states and 87810 transitions. [2018-07-22 11:43:00,209 INFO L78 Accepts]: Start accepts. Automaton has 81279 states and 87810 transitions. Word has length 520 [2018-07-22 11:43:00,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 11:43:00,209 INFO L471 AbstractCegarLoop]: Abstraction has 81279 states and 87810 transitions. [2018-07-22 11:43:00,209 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 11:43:00,209 INFO L276 IsEmpty]: Start isEmpty. Operand 81279 states and 87810 transitions. [2018-07-22 11:43:00,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2018-07-22 11:43:00,228 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 11:43:00,229 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 11:43:00,229 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 11:43:00,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1045696149, now seen corresponding path program 1 times [2018-07-22 11:43:00,229 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 11:43:00,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 11:43:00,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:43:00,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:43:00,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:43:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:43:00,649 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 751 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-07-22 11:43:00,649 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 11:43:00,649 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 11:43:00,650 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 11:43:00,650 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 11:43:00,650 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 11:43:00,650 INFO L87 Difference]: Start difference. First operand 81279 states and 87810 transitions. Second operand 4 states. [2018-07-22 11:43:05,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 11:43:05,730 INFO L93 Difference]: Finished difference Result 161804 states and 174861 transitions. [2018-07-22 11:43:05,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 11:43:05,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 574 [2018-07-22 11:43:05,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 11:43:05,806 INFO L225 Difference]: With dead ends: 161804 [2018-07-22 11:43:05,806 INFO L226 Difference]: Without dead ends: 81279 [2018-07-22 11:43:05,839 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 11:43:05,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81279 states. [2018-07-22 11:43:06,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81279 to 79775. [2018-07-22 11:43:06,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79775 states. [2018-07-22 11:43:06,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79775 states to 79775 states and 84589 transitions. [2018-07-22 11:43:06,477 INFO L78 Accepts]: Start accepts. Automaton has 79775 states and 84589 transitions. Word has length 574 [2018-07-22 11:43:06,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 11:43:06,478 INFO L471 AbstractCegarLoop]: Abstraction has 79775 states and 84589 transitions. [2018-07-22 11:43:06,478 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 11:43:06,478 INFO L276 IsEmpty]: Start isEmpty. Operand 79775 states and 84589 transitions. [2018-07-22 11:43:06,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2018-07-22 11:43:06,500 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 11:43:06,500 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:43:06,500 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 11:43:06,501 INFO L82 PathProgramCache]: Analyzing trace with hash -266169991, now seen corresponding path program 1 times [2018-07-22 11:43:06,501 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 11:43:06,501 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 11:43:06,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:43:06,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:43:06,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:43:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:43:07,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2018-07-22 11:43:07,242 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 11:43:07,242 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 11:43:07,243 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 11:43:07,243 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 11:43:07,243 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 11:43:07,243 INFO L87 Difference]: Start difference. First operand 79775 states and 84589 transitions. Second operand 3 states. [2018-07-22 11:43:10,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 11:43:10,603 INFO L93 Difference]: Finished difference Result 159544 states and 169320 transitions. [2018-07-22 11:43:10,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 11:43:10,633 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 649 [2018-07-22 11:43:10,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 11:43:10,704 INFO L225 Difference]: With dead ends: 159544 [2018-07-22 11:43:10,705 INFO L226 Difference]: Without dead ends: 80523 [2018-07-22 11:43:10,735 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 11:43:10,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80523 states. [2018-07-22 11:43:11,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80523 to 80523. [2018-07-22 11:43:11,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80523 states. [2018-07-22 11:43:11,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80523 states to 80523 states and 84570 transitions. [2018-07-22 11:43:11,705 INFO L78 Accepts]: Start accepts. Automaton has 80523 states and 84570 transitions. Word has length 649 [2018-07-22 11:43:11,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 11:43:11,706 INFO L471 AbstractCegarLoop]: Abstraction has 80523 states and 84570 transitions. [2018-07-22 11:43:11,706 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 11:43:11,706 INFO L276 IsEmpty]: Start isEmpty. Operand 80523 states and 84570 transitions. [2018-07-22 11:43:11,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 976 [2018-07-22 11:43:11,750 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 11:43:11,752 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:43:11,752 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 11:43:11,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1175089573, now seen corresponding path program 1 times [2018-07-22 11:43:11,752 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 11:43:11,752 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 11:43:11,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:43:11,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:43:11,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:43:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:43:12,801 WARN L169 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-07-22 11:43:14,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 691 proven. 5 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-07-22 11:43:14,914 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 11:43:14,914 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 11:43:14,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:43:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:43:15,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 11:43:15,467 WARN L169 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-22 11:43:17,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 631 proven. 65 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-07-22 11:43:17,142 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 11:43:17,142 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 9 [2018-07-22 11:43:17,143 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-22 11:43:17,144 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-22 11:43:17,144 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-07-22 11:43:17,144 INFO L87 Difference]: Start difference. First operand 80523 states and 84570 transitions. Second operand 9 states. [2018-07-22 11:43:30,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 11:43:30,650 INFO L93 Difference]: Finished difference Result 262298 states and 276585 transitions. [2018-07-22 11:43:30,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-22 11:43:30,650 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 975 [2018-07-22 11:43:30,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 11:43:30,834 INFO L225 Difference]: With dead ends: 262298 [2018-07-22 11:43:30,834 INFO L226 Difference]: Without dead ends: 180269 [2018-07-22 11:43:30,872 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 988 GetRequests, 976 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=55, Invalid=77, Unknown=0, NotChecked=0, Total=132 [2018-07-22 11:43:30,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180269 states. [2018-07-22 11:43:32,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180269 to 124684. [2018-07-22 11:43:32,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124684 states. [2018-07-22 11:43:32,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124684 states to 124684 states and 130598 transitions. [2018-07-22 11:43:32,532 INFO L78 Accepts]: Start accepts. Automaton has 124684 states and 130598 transitions. Word has length 975 [2018-07-22 11:43:32,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 11:43:32,533 INFO L471 AbstractCegarLoop]: Abstraction has 124684 states and 130598 transitions. [2018-07-22 11:43:32,533 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-22 11:43:32,533 INFO L276 IsEmpty]: Start isEmpty. Operand 124684 states and 130598 transitions. [2018-07-22 11:43:32,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1036 [2018-07-22 11:43:32,605 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 11:43:32,606 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:43:32,606 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 11:43:32,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1200302459, now seen corresponding path program 1 times [2018-07-22 11:43:32,608 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 11:43:32,608 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 11:43:32,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:43:32,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:43:32,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:43:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:43:34,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 720 proven. 239 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-07-22 11:43:34,623 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 11:43:34,623 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 11:43:34,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:43:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:43:34,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 11:43:45,817 WARN L169 SmtUtils]: Spent 10.46 s on a formula simplification. DAG size of input: 481 DAG size of output: 26 [2018-07-22 11:43:50,845 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 11:43:50,845 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:226) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:154) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:626) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:122) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:187) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:575) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:185) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:228) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:220) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:194) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:411) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:425) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:367) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:309) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:151) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:119) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) ... 45 more [2018-07-22 11:43:50,858 INFO L168 Benchmark]: Toolchain (without parser) took 146319.49 ms. Allocated memory was 302.5 MB in the beginning and 2.5 GB in the end (delta: 2.2 GB). Free memory was 234.8 MB in the beginning and 773.3 MB in the end (delta: -538.5 MB). Peak memory consumption was 1.6 GB. Max. memory is 5.3 GB. [2018-07-22 11:43:50,859 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 302.5 MB. Free memory is still 267.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-22 11:43:50,859 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2660.43 ms. Allocated memory was 302.5 MB in the beginning and 378.0 MB in the end (delta: 75.5 MB). Free memory was 233.8 MB in the beginning and 264.0 MB in the end (delta: -30.2 MB). Peak memory consumption was 102.9 MB. Max. memory is 5.3 GB. [2018-07-22 11:43:50,860 INFO L168 Benchmark]: Boogie Procedure Inliner took 373.08 ms. Allocated memory is still 378.0 MB. Free memory was 264.0 MB in the beginning and 189.3 MB in the end (delta: 74.7 MB). Peak memory consumption was 74.7 MB. Max. memory is 5.3 GB. [2018-07-22 11:43:50,863 INFO L168 Benchmark]: Boogie Preprocessor took 1245.06 ms. Allocated memory was 378.0 MB in the beginning and 627.6 MB in the end (delta: 249.6 MB). Free memory was 189.3 MB in the beginning and 497.4 MB in the end (delta: -308.0 MB). Peak memory consumption was 87.4 MB. Max. memory is 5.3 GB. [2018-07-22 11:43:50,864 INFO L168 Benchmark]: RCFGBuilder took 8321.26 ms. Allocated memory was 627.6 MB in the beginning and 760.7 MB in the end (delta: 133.2 MB). Free memory was 497.4 MB in the beginning and 509.1 MB in the end (delta: -11.7 MB). Peak memory consumption was 278.2 MB. Max. memory is 5.3 GB. [2018-07-22 11:43:50,864 INFO L168 Benchmark]: TraceAbstraction took 133708.94 ms. Allocated memory was 760.7 MB in the beginning and 2.5 GB in the end (delta: 1.7 GB). Free memory was 509.1 MB in the beginning and 773.3 MB in the end (delta: -264.2 MB). Peak memory consumption was 1.5 GB. Max. memory is 5.3 GB. [2018-07-22 11:43:50,873 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 302.5 MB. Free memory is still 267.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 2660.43 ms. Allocated memory was 302.5 MB in the beginning and 378.0 MB in the end (delta: 75.5 MB). Free memory was 233.8 MB in the beginning and 264.0 MB in the end (delta: -30.2 MB). Peak memory consumption was 102.9 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 373.08 ms. Allocated memory is still 378.0 MB. Free memory was 264.0 MB in the beginning and 189.3 MB in the end (delta: 74.7 MB). Peak memory consumption was 74.7 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 1245.06 ms. Allocated memory was 378.0 MB in the beginning and 627.6 MB in the end (delta: 249.6 MB). Free memory was 189.3 MB in the beginning and 497.4 MB in the end (delta: -308.0 MB). Peak memory consumption was 87.4 MB. Max. memory is 5.3 GB. * RCFGBuilder took 8321.26 ms. Allocated memory was 627.6 MB in the beginning and 760.7 MB in the end (delta: 133.2 MB). Free memory was 497.4 MB in the beginning and 509.1 MB in the end (delta: -11.7 MB). Peak memory consumption was 278.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 133708.94 ms. Allocated memory was 760.7 MB in the beginning and 2.5 GB in the end (delta: 1.7 GB). Free memory was 509.1 MB in the beginning and 773.3 MB in the end (delta: -264.2 MB). Peak memory consumption was 1.5 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem12_label09_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-22_11-43-50-894.csv Received shutdown request...