java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/reducercommutativity/avg10_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-5f7ec6e-m [2018-01-31 08:26:39,404 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 08:26:39,405 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 08:26:39,414 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 08:26:39,414 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 08:26:39,414 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 08:26:39,415 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 08:26:39,422 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 08:26:39,423 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 08:26:39,423 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 08:26:39,424 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 08:26:39,424 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 08:26:39,424 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 08:26:39,425 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 08:26:39,425 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 08:26:39,427 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 08:26:39,428 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 08:26:39,429 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 08:26:39,429 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 08:26:39,430 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 08:26:39,431 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-31 08:26:39,434 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 08:26:39,434 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 08:26:39,434 INFO L98 SettingsManager]: Beginning loading settings from /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-31 08:26:39,439 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 08:26:39,439 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 08:26:39,440 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 08:26:39,440 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 08:26:39,440 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 08:26:39,440 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 08:26:39,440 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 08:26:39,440 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 08:26:39,441 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 08:26:39,441 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 08:26:39,441 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 08:26:39,441 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 08:26:39,441 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-31 08:26:39,441 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 08:26:39,441 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-31 08:26:39,441 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 08:26:39,441 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-31 08:26:39,441 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-31 08:26:39,441 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 08:26:39,441 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 08:26:39,442 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 08:26:39,442 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 08:26:39,442 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 08:26:39,442 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 08:26:39,442 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 08:26:39,442 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 08:26:39,442 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 08:26:39,442 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 08:26:39,442 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 08:26:39,442 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 08:26:39,442 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 08:26:39,442 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 08:26:39,443 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 08:26:39,443 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 08:26:39,461 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 08:26:39,467 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 08:26:39,469 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 08:26:39,470 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 08:26:39,470 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 08:26:39,471 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/avg10_true-unreach-call_true-termination.i [2018-01-31 08:26:39,533 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 08:26:39,534 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-31 08:26:39,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 08:26:39,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 08:26:39,538 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 08:26:39,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:26:39" (1/1) ... [2018-01-31 08:26:39,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d35538b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:26:39, skipping insertion in model container [2018-01-31 08:26:39,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:26:39" (1/1) ... [2018-01-31 08:26:39,549 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 08:26:39,559 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 08:26:39,630 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 08:26:39,643 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 08:26:39,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:26:39 WrapperNode [2018-01-31 08:26:39,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 08:26:39,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 08:26:39,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 08:26:39,647 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 08:26:39,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:26:39" (1/1) ... [2018-01-31 08:26:39,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:26:39" (1/1) ... [2018-01-31 08:26:39,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:26:39" (1/1) ... [2018-01-31 08:26:39,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:26:39" (1/1) ... [2018-01-31 08:26:39,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:26:39" (1/1) ... [2018-01-31 08:26:39,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:26:39" (1/1) ... [2018-01-31 08:26:39,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:26:39" (1/1) ... [2018-01-31 08:26:39,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 08:26:39,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 08:26:39,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 08:26:39,667 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 08:26:39,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:26:39" (1/1) ... No working directory specified, using /home/daniel/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 [2018-01-31 08:26:39,718 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 08:26:39,718 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 08:26:39,718 INFO L136 BoogieDeclarations]: Found implementation of procedure avg [2018-01-31 08:26:39,718 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 08:26:39,718 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 08:26:39,718 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 08:26:39,718 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 08:26:39,719 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 08:26:39,719 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 08:26:39,719 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-31 08:26:39,719 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 08:26:39,719 INFO L128 BoogieDeclarations]: Found specification of procedure avg [2018-01-31 08:26:39,719 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 08:26:39,719 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 08:26:39,719 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 08:26:40,085 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 08:26:40,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:26:40 BoogieIcfgContainer [2018-01-31 08:26:40,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 08:26:40,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 08:26:40,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 08:26:40,088 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 08:26:40,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 08:26:39" (1/3) ... [2018-01-31 08:26:40,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb41caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:26:40, skipping insertion in model container [2018-01-31 08:26:40,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:26:39" (2/3) ... [2018-01-31 08:26:40,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb41caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:26:40, skipping insertion in model container [2018-01-31 08:26:40,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:26:40" (3/3) ... [2018-01-31 08:26:40,090 INFO L107 eAbstractionObserver]: Analyzing ICFG avg10_true-unreach-call_true-termination.i [2018-01-31 08:26:40,094 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 08:26:40,099 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-31 08:26:40,123 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 08:26:40,123 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 08:26:40,123 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 08:26:40,123 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 08:26:40,123 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 08:26:40,123 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 08:26:40,123 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 08:26:40,123 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 08:26:40,124 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 08:26:40,133 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2018-01-31 08:26:40,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-01-31 08:26:40,138 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:40,138 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:26:40,139 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolation]=== [2018-01-31 08:26:40,141 INFO L82 PathProgramCache]: Analyzing trace with hash 951170667, now seen corresponding path program 1 times [2018-01-31 08:26:40,142 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:40,142 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:40,171 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:40,171 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:26:40,171 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:40,201 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:40,252 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-01-31 08:26:40,253 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:26:40,254 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 08:26:40,255 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-31 08:26:40,262 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-31 08:26:40,262 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 08:26:40,263 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 2 states. [2018-01-31 08:26:40,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:40,281 INFO L93 Difference]: Finished difference Result 136 states and 153 transitions. [2018-01-31 08:26:40,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-31 08:26:40,282 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 67 [2018-01-31 08:26:40,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:40,287 INFO L225 Difference]: With dead ends: 136 [2018-01-31 08:26:40,287 INFO L226 Difference]: Without dead ends: 71 [2018-01-31 08:26:40,289 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 08:26:40,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-01-31 08:26:40,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-01-31 08:26:40,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-01-31 08:26:40,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2018-01-31 08:26:40,370 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 67 [2018-01-31 08:26:40,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:40,370 INFO L432 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2018-01-31 08:26:40,370 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-31 08:26:40,370 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2018-01-31 08:26:40,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-01-31 08:26:40,372 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:40,372 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:26:40,373 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolation]=== [2018-01-31 08:26:40,373 INFO L82 PathProgramCache]: Analyzing trace with hash 352061447, now seen corresponding path program 1 times [2018-01-31 08:26:40,373 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:40,373 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:40,374 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:40,374 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:26:40,374 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:40,394 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:40,469 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-01-31 08:26:40,469 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:26:40,469 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 08:26:40,470 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 08:26:40,470 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 08:26:40,470 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 08:26:40,470 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 3 states. [2018-01-31 08:26:40,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:40,549 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2018-01-31 08:26:40,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 08:26:40,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2018-01-31 08:26:40,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:40,550 INFO L225 Difference]: With dead ends: 129 [2018-01-31 08:26:40,550 INFO L226 Difference]: Without dead ends: 78 [2018-01-31 08:26:40,551 INFO L554 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 [2018-01-31 08:26:40,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-01-31 08:26:40,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2018-01-31 08:26:40,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-01-31 08:26:40,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2018-01-31 08:26:40,555 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 72 [2018-01-31 08:26:40,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:40,556 INFO L432 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2018-01-31 08:26:40,556 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 08:26:40,556 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2018-01-31 08:26:40,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-01-31 08:26:40,557 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:40,557 INFO L351 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:26:40,557 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolation]=== [2018-01-31 08:26:40,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1617545872, now seen corresponding path program 1 times [2018-01-31 08:26:40,557 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:40,557 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:40,558 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:40,559 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:26:40,559 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:40,568 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:40,637 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-01-31 08:26:40,637 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:26:40,638 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:26:40,651 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:26:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:40,696 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:26:40,747 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-01-31 08:26:40,764 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:26:40,764 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 08:26:40,765 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 08:26:40,765 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 08:26:40,765 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 08:26:40,765 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 6 states. [2018-01-31 08:26:41,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:41,067 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2018-01-31 08:26:41,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 08:26:41,067 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2018-01-31 08:26:41,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:41,068 INFO L225 Difference]: With dead ends: 144 [2018-01-31 08:26:41,068 INFO L226 Difference]: Without dead ends: 93 [2018-01-31 08:26:41,068 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-31 08:26:41,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-01-31 08:26:41,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2018-01-31 08:26:41,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-01-31 08:26:41,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2018-01-31 08:26:41,073 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 80 [2018-01-31 08:26:41,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:41,073 INFO L432 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2018-01-31 08:26:41,073 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 08:26:41,073 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2018-01-31 08:26:41,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-01-31 08:26:41,074 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:41,075 INFO L351 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:26:41,075 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolation]=== [2018-01-31 08:26:41,075 INFO L82 PathProgramCache]: Analyzing trace with hash -904252446, now seen corresponding path program 1 times [2018-01-31 08:26:41,075 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:41,075 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:41,076 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:41,076 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:26:41,076 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:41,086 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:41,165 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-01-31 08:26:41,165 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:26:41,165 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:26:41,170 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:26:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:41,203 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:26:41,217 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-01-31 08:26:41,234 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:26:41,234 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 08:26:41,235 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 08:26:41,235 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 08:26:41,235 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 08:26:41,235 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 6 states. [2018-01-31 08:26:41,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:41,424 INFO L93 Difference]: Finished difference Result 155 states and 166 transitions. [2018-01-31 08:26:41,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 08:26:41,426 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-01-31 08:26:41,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:41,428 INFO L225 Difference]: With dead ends: 155 [2018-01-31 08:26:41,428 INFO L226 Difference]: Without dead ends: 103 [2018-01-31 08:26:41,428 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-31 08:26:41,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-01-31 08:26:41,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 93. [2018-01-31 08:26:41,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-01-31 08:26:41,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2018-01-31 08:26:41,434 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 112 [2018-01-31 08:26:41,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:41,434 INFO L432 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2018-01-31 08:26:41,434 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 08:26:41,434 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2018-01-31 08:26:41,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-01-31 08:26:41,436 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:41,436 INFO L351 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-31 08:26:41,436 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolation]=== [2018-01-31 08:26:41,436 INFO L82 PathProgramCache]: Analyzing trace with hash -705814942, now seen corresponding path program 1 times [2018-01-31 08:26:41,436 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:41,437 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:41,437 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:41,437 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:26:41,437 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:41,460 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:41,579 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-01-31 08:26:41,579 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:26:41,580 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:26:41,589 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:26:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:41,620 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:26:41,842 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2018-01-31 08:26:41,861 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:26:41,861 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2018-01-31 08:26:41,861 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-31 08:26:41,862 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-31 08:26:41,862 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-31 08:26:41,862 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 10 states. [2018-01-31 08:26:42,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:42,041 INFO L93 Difference]: Finished difference Result 182 states and 191 transitions. [2018-01-31 08:26:42,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-31 08:26:42,041 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 144 [2018-01-31 08:26:42,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:42,042 INFO L225 Difference]: With dead ends: 182 [2018-01-31 08:26:42,042 INFO L226 Difference]: Without dead ends: 119 [2018-01-31 08:26:42,043 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-01-31 08:26:42,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-01-31 08:26:42,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 109. [2018-01-31 08:26:42,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-01-31 08:26:42,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2018-01-31 08:26:42,047 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 144 [2018-01-31 08:26:42,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:42,047 INFO L432 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2018-01-31 08:26:42,047 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-31 08:26:42,047 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2018-01-31 08:26:42,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-01-31 08:26:42,049 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:42,049 INFO L351 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:26:42,049 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolation]=== [2018-01-31 08:26:42,049 INFO L82 PathProgramCache]: Analyzing trace with hash 448042562, now seen corresponding path program 2 times [2018-01-31 08:26:42,049 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:42,049 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:42,050 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:42,050 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:26:42,050 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:42,068 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:42,206 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-01-31 08:26:42,206 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:26:42,206 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:26:42,211 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:26:42,223 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:42,245 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:42,258 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:26:42,261 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:26:42,605 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-01-31 08:26:42,621 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:26:42,621 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2018-01-31 08:26:42,622 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-31 08:26:42,622 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-31 08:26:42,622 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-01-31 08:26:42,622 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 14 states. [2018-01-31 08:26:42,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:42,899 INFO L93 Difference]: Finished difference Result 206 states and 218 transitions. [2018-01-31 08:26:42,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-31 08:26:42,899 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 160 [2018-01-31 08:26:42,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:42,899 INFO L225 Difference]: With dead ends: 206 [2018-01-31 08:26:42,900 INFO L226 Difference]: Without dead ends: 135 [2018-01-31 08:26:42,900 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2018-01-31 08:26:42,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-01-31 08:26:42,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 125. [2018-01-31 08:26:42,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-01-31 08:26:42,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2018-01-31 08:26:42,904 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 160 [2018-01-31 08:26:42,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:42,905 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2018-01-31 08:26:42,905 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-31 08:26:42,905 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2018-01-31 08:26:42,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-01-31 08:26:42,906 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:42,907 INFO L351 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:26:42,907 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolation]=== [2018-01-31 08:26:42,907 INFO L82 PathProgramCache]: Analyzing trace with hash 651681972, now seen corresponding path program 3 times [2018-01-31 08:26:42,907 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:42,907 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:42,907 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:42,908 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:26:42,908 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:42,922 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:43,324 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2018-01-31 08:26:43,325 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:26:43,325 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:26:43,329 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:26:43,339 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:26:43,348 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:26:43,356 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:26:43,364 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:26:43,374 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:26:43,377 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:26:43,410 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 188 proven. 12 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-01-31 08:26:43,426 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:26:43,426 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-01-31 08:26:43,427 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 08:26:43,427 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 08:26:43,427 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-31 08:26:43,427 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand 9 states. [2018-01-31 08:26:43,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:43,467 INFO L93 Difference]: Finished difference Result 180 states and 185 transitions. [2018-01-31 08:26:43,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-31 08:26:43,467 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 192 [2018-01-31 08:26:43,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:43,468 INFO L225 Difference]: With dead ends: 180 [2018-01-31 08:26:43,468 INFO L226 Difference]: Without dead ends: 138 [2018-01-31 08:26:43,468 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-01-31 08:26:43,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-01-31 08:26:43,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 133. [2018-01-31 08:26:43,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-01-31 08:26:43,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 137 transitions. [2018-01-31 08:26:43,473 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 137 transitions. Word has length 192 [2018-01-31 08:26:43,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:43,475 INFO L432 AbstractCegarLoop]: Abstraction has 133 states and 137 transitions. [2018-01-31 08:26:43,475 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 08:26:43,475 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 137 transitions. [2018-01-31 08:26:43,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-01-31 08:26:43,476 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:43,476 INFO L351 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:26:43,476 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolation]=== [2018-01-31 08:26:43,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1257913045, now seen corresponding path program 4 times [2018-01-31 08:26:43,476 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:43,477 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:43,477 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:43,477 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:26:43,477 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:43,490 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:43,612 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2018-01-31 08:26:43,612 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:26:43,612 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:26:43,618 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:26:43,658 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:26:43,660 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:26:43,685 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2018-01-31 08:26:43,702 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:26:43,702 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2018-01-31 08:26:43,703 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-31 08:26:43,703 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-31 08:26:43,703 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-31 08:26:43,703 INFO L87 Difference]: Start difference. First operand 133 states and 137 transitions. Second operand 13 states. [2018-01-31 08:26:43,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:43,772 INFO L93 Difference]: Finished difference Result 233 states and 241 transitions. [2018-01-31 08:26:43,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-31 08:26:43,781 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 200 [2018-01-31 08:26:43,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:43,782 INFO L225 Difference]: With dead ends: 233 [2018-01-31 08:26:43,782 INFO L226 Difference]: Without dead ends: 146 [2018-01-31 08:26:43,782 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2018-01-31 08:26:43,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-31 08:26:43,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 141. [2018-01-31 08:26:43,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-01-31 08:26:43,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 145 transitions. [2018-01-31 08:26:43,786 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 145 transitions. Word has length 200 [2018-01-31 08:26:43,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:43,786 INFO L432 AbstractCegarLoop]: Abstraction has 141 states and 145 transitions. [2018-01-31 08:26:43,786 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-31 08:26:43,786 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 145 transitions. [2018-01-31 08:26:43,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-01-31 08:26:43,788 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:43,788 INFO L351 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:26:43,788 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolation]=== [2018-01-31 08:26:43,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1725930860, now seen corresponding path program 5 times [2018-01-31 08:26:43,788 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:43,788 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:43,789 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:43,789 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:26:43,789 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:43,807 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:44,113 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2018-01-31 08:26:44,114 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:26:44,114 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:26:44,118 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:26:44,128 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:44,131 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:44,137 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:44,146 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:44,147 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:26:44,149 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:26:44,211 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 182 proven. 30 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-01-31 08:26:44,229 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:26:44,229 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2018-01-31 08:26:44,230 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-31 08:26:44,230 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-31 08:26:44,230 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2018-01-31 08:26:44,230 INFO L87 Difference]: Start difference. First operand 141 states and 145 transitions. Second operand 20 states. [2018-01-31 08:26:44,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:44,494 INFO L93 Difference]: Finished difference Result 254 states and 266 transitions. [2018-01-31 08:26:44,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-31 08:26:44,495 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 208 [2018-01-31 08:26:44,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:44,496 INFO L225 Difference]: With dead ends: 254 [2018-01-31 08:26:44,496 INFO L226 Difference]: Without dead ends: 167 [2018-01-31 08:26:44,496 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2018-01-31 08:26:44,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-01-31 08:26:44,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 157. [2018-01-31 08:26:44,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-01-31 08:26:44,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 161 transitions. [2018-01-31 08:26:44,500 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 161 transitions. Word has length 208 [2018-01-31 08:26:44,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:44,500 INFO L432 AbstractCegarLoop]: Abstraction has 157 states and 161 transitions. [2018-01-31 08:26:44,500 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-01-31 08:26:44,501 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 161 transitions. [2018-01-31 08:26:44,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-01-31 08:26:44,502 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:44,502 INFO L351 BasicCegarLoop]: trace histogram [15, 12, 12, 12, 12, 12, 12, 12, 7, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:26:44,502 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolation]=== [2018-01-31 08:26:44,503 INFO L82 PathProgramCache]: Analyzing trace with hash 486960902, now seen corresponding path program 6 times [2018-01-31 08:26:44,503 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:44,503 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:44,503 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:44,503 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:26:44,503 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:44,515 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:44,721 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-01-31 08:26:44,721 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:26:44,721 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:26:44,727 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:26:44,736 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:44,739 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:44,742 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:44,755 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:44,763 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:44,777 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:44,785 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:44,787 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:26:44,789 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:26:44,860 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 454 proven. 56 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2018-01-31 08:26:44,878 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:26:44,878 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2018-01-31 08:26:44,879 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-31 08:26:44,879 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-31 08:26:44,879 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2018-01-31 08:26:44,879 INFO L87 Difference]: Start difference. First operand 157 states and 161 transitions. Second operand 24 states. [2018-01-31 08:26:45,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:45,159 INFO L93 Difference]: Finished difference Result 278 states and 290 transitions. [2018-01-31 08:26:45,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-31 08:26:45,168 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 240 [2018-01-31 08:26:45,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:45,168 INFO L225 Difference]: With dead ends: 278 [2018-01-31 08:26:45,168 INFO L226 Difference]: Without dead ends: 183 [2018-01-31 08:26:45,169 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=365, Invalid=1527, Unknown=0, NotChecked=0, Total=1892 [2018-01-31 08:26:45,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-01-31 08:26:45,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 173. [2018-01-31 08:26:45,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-01-31 08:26:45,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 177 transitions. [2018-01-31 08:26:45,172 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 177 transitions. Word has length 240 [2018-01-31 08:26:45,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:45,173 INFO L432 AbstractCegarLoop]: Abstraction has 173 states and 177 transitions. [2018-01-31 08:26:45,173 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-31 08:26:45,173 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 177 transitions. [2018-01-31 08:26:45,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-01-31 08:26:45,174 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:45,175 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 8, 7, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:26:45,175 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolation]=== [2018-01-31 08:26:45,175 INFO L82 PathProgramCache]: Analyzing trace with hash 2007982456, now seen corresponding path program 7 times [2018-01-31 08:26:45,175 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:45,175 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:45,175 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:45,175 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:26:45,176 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:45,187 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:45,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-31 08:26:45,401 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:26:45,402 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:26:45,406 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:26:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:45,447 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:26:45,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-31 08:26:45,802 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:26:45,802 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2018-01-31 08:26:45,803 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-31 08:26:45,803 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-31 08:26:45,803 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-31 08:26:45,803 INFO L87 Difference]: Start difference. First operand 173 states and 177 transitions. Second operand 19 states. [2018-01-31 08:26:45,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:45,993 INFO L93 Difference]: Finished difference Result 289 states and 297 transitions. [2018-01-31 08:26:45,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-31 08:26:45,997 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 272 [2018-01-31 08:26:45,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:45,998 INFO L225 Difference]: With dead ends: 289 [2018-01-31 08:26:45,998 INFO L226 Difference]: Without dead ends: 186 [2018-01-31 08:26:45,998 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 08:26:45,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-01-31 08:26:46,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 181. [2018-01-31 08:26:46,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-01-31 08:26:46,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 185 transitions. [2018-01-31 08:26:46,001 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 185 transitions. Word has length 272 [2018-01-31 08:26:46,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:46,002 INFO L432 AbstractCegarLoop]: Abstraction has 181 states and 185 transitions. [2018-01-31 08:26:46,002 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-31 08:26:46,002 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 185 transitions. [2018-01-31 08:26:46,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-01-31 08:26:46,002 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:46,003 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 9, 8, 8, 8, 8, 8, 8, 8, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:26:46,003 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolation]=== [2018-01-31 08:26:46,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1034502687, now seen corresponding path program 8 times [2018-01-31 08:26:46,003 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:46,003 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:46,003 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:46,004 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:26:46,004 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:46,015 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:46,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-31 08:26:46,451 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:26:46,451 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:26:46,459 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:26:46,491 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:46,515 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:46,518 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:26:46,521 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:26:46,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-31 08:26:46,598 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:26:46,598 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-31 08:26:46,598 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 08:26:46,598 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 08:26:46,599 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-31 08:26:46,599 INFO L87 Difference]: Start difference. First operand 181 states and 185 transitions. Second operand 21 states. [2018-01-31 08:26:46,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:46,785 INFO L93 Difference]: Finished difference Result 297 states and 305 transitions. [2018-01-31 08:26:46,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-31 08:26:46,792 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 280 [2018-01-31 08:26:46,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:46,793 INFO L225 Difference]: With dead ends: 297 [2018-01-31 08:26:46,793 INFO L226 Difference]: Without dead ends: 194 [2018-01-31 08:26:46,794 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 08:26:46,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-01-31 08:26:46,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 189. [2018-01-31 08:26:46,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-31 08:26:46,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 193 transitions. [2018-01-31 08:26:46,796 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 193 transitions. Word has length 280 [2018-01-31 08:26:46,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:46,797 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 193 transitions. [2018-01-31 08:26:46,797 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 08:26:46,797 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 193 transitions. [2018-01-31 08:26:46,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-01-31 08:26:46,798 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:46,798 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 10, 9, 9, 9, 9, 9, 9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:26:46,798 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolation]=== [2018-01-31 08:26:46,798 INFO L82 PathProgramCache]: Analyzing trace with hash -571236022, now seen corresponding path program 9 times [2018-01-31 08:26:46,798 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:46,798 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:46,799 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:46,799 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:26:46,799 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:46,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:46,810 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:47,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-31 08:26:47,057 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:26:47,057 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:26:47,063 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:26:47,089 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:26:47,104 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:26:47,109 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:26:47,118 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:26:47,139 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:26:47,146 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:26:47,149 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:26:47,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 460 proven. 30 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2018-01-31 08:26:47,303 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:26:47,303 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9] total 28 [2018-01-31 08:26:47,304 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-31 08:26:47,304 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-31 08:26:47,304 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2018-01-31 08:26:47,304 INFO L87 Difference]: Start difference. First operand 189 states and 193 transitions. Second operand 28 states. [2018-01-31 08:26:47,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:47,766 INFO L93 Difference]: Finished difference Result 313 states and 322 transitions. [2018-01-31 08:26:47,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-31 08:26:47,766 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 288 [2018-01-31 08:26:47,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:47,767 INFO L225 Difference]: With dead ends: 313 [2018-01-31 08:26:47,767 INFO L226 Difference]: Without dead ends: 210 [2018-01-31 08:26:47,768 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=575, Invalid=2077, Unknown=0, NotChecked=0, Total=2652 [2018-01-31 08:26:47,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-01-31 08:26:47,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 205. [2018-01-31 08:26:47,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-01-31 08:26:47,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 209 transitions. [2018-01-31 08:26:47,770 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 209 transitions. Word has length 288 [2018-01-31 08:26:47,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:47,771 INFO L432 AbstractCegarLoop]: Abstraction has 205 states and 209 transitions. [2018-01-31 08:26:47,771 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-31 08:26:47,771 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 209 transitions. [2018-01-31 08:26:47,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-01-31 08:26:47,772 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:47,772 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 11, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:26:47,773 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolation]=== [2018-01-31 08:26:47,773 INFO L82 PathProgramCache]: Analyzing trace with hash 2113676586, now seen corresponding path program 10 times [2018-01-31 08:26:47,773 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:47,773 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:47,773 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:47,773 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:26:47,773 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:47,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:47,806 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:48,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 856 trivial. 0 not checked. [2018-01-31 08:26:48,237 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:26:48,237 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:26:48,241 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:26:48,269 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:26:48,272 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:26:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 454 proven. 90 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2018-01-31 08:26:48,349 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:26:48,349 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2018-01-31 08:26:48,350 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-31 08:26:48,350 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-31 08:26:48,350 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-31 08:26:48,350 INFO L87 Difference]: Start difference. First operand 205 states and 209 transitions. Second operand 15 states. [2018-01-31 08:26:48,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:48,454 INFO L93 Difference]: Finished difference Result 328 states and 338 transitions. [2018-01-31 08:26:48,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-31 08:26:48,455 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 304 [2018-01-31 08:26:48,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:48,456 INFO L225 Difference]: With dead ends: 328 [2018-01-31 08:26:48,456 INFO L226 Difference]: Without dead ends: 218 [2018-01-31 08:26:48,456 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2018-01-31 08:26:48,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-01-31 08:26:48,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 213. [2018-01-31 08:26:48,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-01-31 08:26:48,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 217 transitions. [2018-01-31 08:26:48,462 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 217 transitions. Word has length 304 [2018-01-31 08:26:48,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:48,462 INFO L432 AbstractCegarLoop]: Abstraction has 213 states and 217 transitions. [2018-01-31 08:26:48,463 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-31 08:26:48,463 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 217 transitions. [2018-01-31 08:26:48,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-01-31 08:26:48,464 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:48,464 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 18, 18, 18, 11, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:26:48,464 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolation]=== [2018-01-31 08:26:48,464 INFO L82 PathProgramCache]: Analyzing trace with hash 605094963, now seen corresponding path program 11 times [2018-01-31 08:26:48,464 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:48,464 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:48,464 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:48,465 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:26:48,465 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:48,476 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:48,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1798 backedges. 0 proven. 766 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2018-01-31 08:26:48,785 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:26:48,785 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:26:48,794 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:26:48,811 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:48,813 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:48,814 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:48,817 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:48,820 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:48,825 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:48,831 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:48,839 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:48,864 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:48,865 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:26:48,868 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:26:48,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1798 backedges. 638 proven. 132 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2018-01-31 08:26:48,962 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:26:48,962 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2018-01-31 08:26:48,962 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-31 08:26:48,962 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-31 08:26:48,962 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-01-31 08:26:48,962 INFO L87 Difference]: Start difference. First operand 213 states and 217 transitions. Second operand 17 states. [2018-01-31 08:26:49,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:49,132 INFO L93 Difference]: Finished difference Result 344 states and 354 transitions. [2018-01-31 08:26:49,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-31 08:26:49,144 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 328 [2018-01-31 08:26:49,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:49,145 INFO L225 Difference]: With dead ends: 344 [2018-01-31 08:26:49,145 INFO L226 Difference]: Without dead ends: 226 [2018-01-31 08:26:49,146 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2018-01-31 08:26:49,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-01-31 08:26:49,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 221. [2018-01-31 08:26:49,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-01-31 08:26:49,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 225 transitions. [2018-01-31 08:26:49,150 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 225 transitions. Word has length 328 [2018-01-31 08:26:49,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:49,150 INFO L432 AbstractCegarLoop]: Abstraction has 221 states and 225 transitions. [2018-01-31 08:26:49,150 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-31 08:26:49,151 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 225 transitions. [2018-01-31 08:26:49,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-01-31 08:26:49,152 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:49,153 INFO L351 BasicCegarLoop]: trace histogram [24, 21, 21, 21, 21, 21, 21, 21, 11, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:26:49,153 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolation]=== [2018-01-31 08:26:49,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1503389636, now seen corresponding path program 12 times [2018-01-31 08:26:49,153 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:49,153 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:49,153 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:49,153 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:26:49,153 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:49,171 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:49,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2272 backedges. 0 proven. 1032 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2018-01-31 08:26:49,983 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:26:49,983 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:26:49,989 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:26:50,000 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:50,011 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:50,024 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:50,031 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:50,039 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:50,059 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:50,085 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:50,109 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:50,165 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:50,256 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:50,328 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:50,329 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:26:50,332 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:26:50,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2272 backedges. 854 proven. 182 refuted. 0 times theorem prover too weak. 1236 trivial. 0 not checked. [2018-01-31 08:26:50,399 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:26:50,400 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2018-01-31 08:26:50,400 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-31 08:26:50,400 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-31 08:26:50,400 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-31 08:26:50,400 INFO L87 Difference]: Start difference. First operand 221 states and 225 transitions. Second operand 19 states. [2018-01-31 08:26:50,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:50,517 INFO L93 Difference]: Finished difference Result 360 states and 370 transitions. [2018-01-31 08:26:50,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-31 08:26:50,517 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 352 [2018-01-31 08:26:50,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:50,518 INFO L225 Difference]: With dead ends: 360 [2018-01-31 08:26:50,518 INFO L226 Difference]: Without dead ends: 234 [2018-01-31 08:26:50,519 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 08:26:50,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-01-31 08:26:50,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 229. [2018-01-31 08:26:50,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-01-31 08:26:50,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2018-01-31 08:26:50,521 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 352 [2018-01-31 08:26:50,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:50,522 INFO L432 AbstractCegarLoop]: Abstraction has 229 states and 233 transitions. [2018-01-31 08:26:50,522 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-31 08:26:50,522 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 233 transitions. [2018-01-31 08:26:50,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-01-31 08:26:50,523 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:50,523 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 24, 24, 24, 11, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:26:50,523 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolation]=== [2018-01-31 08:26:50,523 INFO L82 PathProgramCache]: Analyzing trace with hash -607493819, now seen corresponding path program 13 times [2018-01-31 08:26:50,523 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:50,523 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:50,524 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:50,524 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:26:50,524 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:50,536 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:50,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2818 backedges. 0 proven. 1338 refuted. 0 times theorem prover too weak. 1480 trivial. 0 not checked. [2018-01-31 08:26:50,840 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:26:50,840 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:26:50,845 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:26:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:50,885 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:26:51,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2818 backedges. 1102 proven. 240 refuted. 0 times theorem prover too weak. 1476 trivial. 0 not checked. [2018-01-31 08:26:51,274 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:26:51,274 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-31 08:26:51,274 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 08:26:51,275 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 08:26:51,275 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-31 08:26:51,275 INFO L87 Difference]: Start difference. First operand 229 states and 233 transitions. Second operand 21 states. [2018-01-31 08:26:51,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:51,867 INFO L93 Difference]: Finished difference Result 376 states and 386 transitions. [2018-01-31 08:26:51,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-31 08:26:51,867 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 376 [2018-01-31 08:26:51,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:51,868 INFO L225 Difference]: With dead ends: 376 [2018-01-31 08:26:51,868 INFO L226 Difference]: Without dead ends: 242 [2018-01-31 08:26:51,869 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 08:26:51,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-01-31 08:26:51,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 237. [2018-01-31 08:26:51,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-01-31 08:26:51,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 241 transitions. [2018-01-31 08:26:51,871 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 241 transitions. Word has length 376 [2018-01-31 08:26:51,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:51,872 INFO L432 AbstractCegarLoop]: Abstraction has 237 states and 241 transitions. [2018-01-31 08:26:51,872 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 08:26:51,872 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 241 transitions. [2018-01-31 08:26:51,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-01-31 08:26:51,873 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:51,873 INFO L351 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 27, 11, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:26:51,873 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolation]=== [2018-01-31 08:26:51,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1075371854, now seen corresponding path program 14 times [2018-01-31 08:26:51,873 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:51,873 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:51,874 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:51,874 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:26:51,874 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:51,886 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:52,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3436 backedges. 0 proven. 1684 refuted. 0 times theorem prover too weak. 1752 trivial. 0 not checked. [2018-01-31 08:26:52,559 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:26:52,559 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:26:52,564 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:26:52,576 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:52,610 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:52,624 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:26:52,627 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:26:52,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3436 backedges. 1382 proven. 306 refuted. 0 times theorem prover too weak. 1748 trivial. 0 not checked. [2018-01-31 08:26:52,795 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:26:52,796 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2018-01-31 08:26:52,796 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-31 08:26:52,796 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-31 08:26:52,796 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-01-31 08:26:52,796 INFO L87 Difference]: Start difference. First operand 237 states and 241 transitions. Second operand 23 states. [2018-01-31 08:26:53,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:53,177 INFO L93 Difference]: Finished difference Result 387 states and 397 transitions. [2018-01-31 08:26:53,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-31 08:26:53,177 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 400 [2018-01-31 08:26:53,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:53,177 INFO L225 Difference]: With dead ends: 387 [2018-01-31 08:26:53,178 INFO L226 Difference]: Without dead ends: 245 [2018-01-31 08:26:53,178 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2018-01-31 08:26:53,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-01-31 08:26:53,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-01-31 08:26:53,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-01-31 08:26:53,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 249 transitions. [2018-01-31 08:26:53,181 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 249 transitions. Word has length 400 [2018-01-31 08:26:53,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:53,181 INFO L432 AbstractCegarLoop]: Abstraction has 245 states and 249 transitions. [2018-01-31 08:26:53,181 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-31 08:26:53,181 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 249 transitions. [2018-01-31 08:26:53,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-01-31 08:26:53,183 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:53,183 INFO L351 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:26:53,183 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolation]=== [2018-01-31 08:26:53,183 INFO L82 PathProgramCache]: Analyzing trace with hash -198929833, now seen corresponding path program 15 times [2018-01-31 08:26:53,183 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:53,183 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:53,183 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:53,184 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:26:53,184 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:53,196 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:53,725 INFO L134 CoverageAnalysis]: Checked inductivity of 4126 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-31 08:26:53,725 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:26:53,725 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:26:53,729 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:26:53,741 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:26:53,745 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:26:53,751 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:26:53,761 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:26:53,770 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:26:53,793 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:26:53,794 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:26:53,797 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:26:53,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4126 backedges. 1700 proven. 56 refuted. 0 times theorem prover too weak. 2370 trivial. 0 not checked. [2018-01-31 08:26:53,939 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:26:53,939 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2018-01-31 08:26:53,940 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-31 08:26:53,940 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-31 08:26:53,940 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-31 08:26:53,940 INFO L87 Difference]: Start difference. First operand 245 states and 249 transitions. Second operand 13 states. [2018-01-31 08:26:53,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:53,996 INFO L93 Difference]: Finished difference Result 356 states and 361 transitions. [2018-01-31 08:26:53,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-31 08:26:53,996 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 424 [2018-01-31 08:26:53,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:53,997 INFO L225 Difference]: With dead ends: 356 [2018-01-31 08:26:53,997 INFO L226 Difference]: Without dead ends: 258 [2018-01-31 08:26:53,997 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2018-01-31 08:26:53,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-01-31 08:26:53,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 253. [2018-01-31 08:26:53,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-01-31 08:26:54,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 257 transitions. [2018-01-31 08:26:54,000 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 257 transitions. Word has length 424 [2018-01-31 08:26:54,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:54,000 INFO L432 AbstractCegarLoop]: Abstraction has 253 states and 257 transitions. [2018-01-31 08:26:54,000 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-31 08:26:54,000 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 257 transitions. [2018-01-31 08:26:54,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-01-31 08:26:54,002 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:54,002 INFO L351 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:26:54,002 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolation]=== [2018-01-31 08:26:54,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1675337266, now seen corresponding path program 16 times [2018-01-31 08:26:54,002 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:54,002 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:54,003 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:54,003 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:26:54,003 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:54,015 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:54,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-31 08:26:54,545 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:26:54,545 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:26:54,551 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:26:54,596 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:26:54,599 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:26:54,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 1700 proven. 90 refuted. 0 times theorem prover too weak. 2370 trivial. 0 not checked. [2018-01-31 08:26:54,765 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:26:54,765 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2018-01-31 08:26:54,765 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-31 08:26:54,765 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-31 08:26:54,766 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-31 08:26:54,766 INFO L87 Difference]: Start difference. First operand 253 states and 257 transitions. Second operand 15 states. [2018-01-31 08:26:54,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:54,855 INFO L93 Difference]: Finished difference Result 364 states and 369 transitions. [2018-01-31 08:26:54,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-31 08:26:54,855 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 432 [2018-01-31 08:26:54,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:54,856 INFO L225 Difference]: With dead ends: 364 [2018-01-31 08:26:54,856 INFO L226 Difference]: Without dead ends: 266 [2018-01-31 08:26:54,856 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2018-01-31 08:26:54,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-01-31 08:26:54,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 261. [2018-01-31 08:26:54,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-01-31 08:26:54,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 265 transitions. [2018-01-31 08:26:54,859 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 265 transitions. Word has length 432 [2018-01-31 08:26:54,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:54,859 INFO L432 AbstractCegarLoop]: Abstraction has 261 states and 265 transitions. [2018-01-31 08:26:54,859 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-31 08:26:54,859 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 265 transitions. [2018-01-31 08:26:54,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2018-01-31 08:26:54,861 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:54,861 INFO L351 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:26:54,861 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolation]=== [2018-01-31 08:26:54,862 INFO L82 PathProgramCache]: Analyzing trace with hash 380947013, now seen corresponding path program 17 times [2018-01-31 08:26:54,862 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:54,862 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:54,862 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:54,862 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:26:54,862 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:54,876 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:55,386 INFO L134 CoverageAnalysis]: Checked inductivity of 4202 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-31 08:26:55,386 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:26:55,386 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:26:55,391 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:26:55,403 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:55,404 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:55,407 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:55,410 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:55,413 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:55,417 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:55,423 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:55,435 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:55,455 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:55,498 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:55,558 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:55,756 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:55,758 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:26:55,762 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:26:55,955 INFO L134 CoverageAnalysis]: Checked inductivity of 4202 backedges. 1700 proven. 132 refuted. 0 times theorem prover too weak. 2370 trivial. 0 not checked. [2018-01-31 08:26:55,974 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:26:55,975 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2018-01-31 08:26:55,975 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-31 08:26:55,975 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-31 08:26:55,975 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-01-31 08:26:55,975 INFO L87 Difference]: Start difference. First operand 261 states and 265 transitions. Second operand 17 states. [2018-01-31 08:26:56,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:56,082 INFO L93 Difference]: Finished difference Result 372 states and 377 transitions. [2018-01-31 08:26:56,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-31 08:26:56,082 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 440 [2018-01-31 08:26:56,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:56,083 INFO L225 Difference]: With dead ends: 372 [2018-01-31 08:26:56,083 INFO L226 Difference]: Without dead ends: 274 [2018-01-31 08:26:56,084 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2018-01-31 08:26:56,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-01-31 08:26:56,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 269. [2018-01-31 08:26:56,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-01-31 08:26:56,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 273 transitions. [2018-01-31 08:26:56,089 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 273 transitions. Word has length 440 [2018-01-31 08:26:56,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:56,089 INFO L432 AbstractCegarLoop]: Abstraction has 269 states and 273 transitions. [2018-01-31 08:26:56,089 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-31 08:26:56,090 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 273 transitions. [2018-01-31 08:26:56,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-01-31 08:26:56,091 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:56,091 INFO L351 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 8, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:26:56,091 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolation]=== [2018-01-31 08:26:56,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1171469380, now seen corresponding path program 18 times [2018-01-31 08:26:56,092 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:56,092 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:56,092 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:56,092 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:26:56,092 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:56,105 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:56,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4252 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-31 08:26:56,517 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:26:56,517 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:26:56,524 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:26:56,536 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:56,548 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:56,564 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:56,575 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:56,591 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:56,603 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:56,629 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:56,663 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:56,711 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:56,755 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:56,911 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:57,102 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:57,135 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:26:57,138 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:26:57,142 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:26:57,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4252 backedges. 1700 proven. 182 refuted. 0 times theorem prover too weak. 2370 trivial. 0 not checked. [2018-01-31 08:26:57,249 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:26:57,249 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2018-01-31 08:26:57,249 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-31 08:26:57,250 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-31 08:26:57,250 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-31 08:26:57,250 INFO L87 Difference]: Start difference. First operand 269 states and 273 transitions. Second operand 19 states. [2018-01-31 08:26:57,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:57,730 INFO L93 Difference]: Finished difference Result 380 states and 385 transitions. [2018-01-31 08:26:57,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-31 08:26:57,731 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 448 [2018-01-31 08:26:57,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:57,732 INFO L225 Difference]: With dead ends: 380 [2018-01-31 08:26:57,732 INFO L226 Difference]: Without dead ends: 282 [2018-01-31 08:26:57,733 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 08:26:57,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2018-01-31 08:26:57,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 277. [2018-01-31 08:26:57,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-01-31 08:26:57,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 281 transitions. [2018-01-31 08:26:57,736 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 281 transitions. Word has length 448 [2018-01-31 08:26:57,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:57,736 INFO L432 AbstractCegarLoop]: Abstraction has 277 states and 281 transitions. [2018-01-31 08:26:57,736 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-31 08:26:57,736 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 281 transitions. [2018-01-31 08:26:57,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2018-01-31 08:26:57,739 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:57,739 INFO L351 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:26:57,739 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr0AssertViolation]=== [2018-01-31 08:26:57,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1780259277, now seen corresponding path program 19 times [2018-01-31 08:26:57,739 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:57,739 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:57,740 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:57,740 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:26:57,740 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:57,756 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:58,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4310 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-31 08:26:58,163 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:26:58,164 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:26:58,168 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:26:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:58,227 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:26:58,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4310 backedges. 1700 proven. 240 refuted. 0 times theorem prover too weak. 2370 trivial. 0 not checked. [2018-01-31 08:26:58,602 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:26:58,602 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-31 08:26:58,603 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 08:26:58,603 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 08:26:58,603 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-31 08:26:58,603 INFO L87 Difference]: Start difference. First operand 277 states and 281 transitions. Second operand 21 states. [2018-01-31 08:26:58,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:58,734 INFO L93 Difference]: Finished difference Result 383 states and 388 transitions. [2018-01-31 08:26:58,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-31 08:26:58,735 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 456 [2018-01-31 08:26:58,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:58,736 INFO L225 Difference]: With dead ends: 383 [2018-01-31 08:26:58,736 INFO L226 Difference]: Without dead ends: 285 [2018-01-31 08:26:58,736 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 08:26:58,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-01-31 08:26:58,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2018-01-31 08:26:58,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-01-31 08:26:58,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 289 transitions. [2018-01-31 08:26:58,739 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 289 transitions. Word has length 456 [2018-01-31 08:26:58,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:58,739 INFO L432 AbstractCegarLoop]: Abstraction has 285 states and 289 transitions. [2018-01-31 08:26:58,739 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 08:26:58,740 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 289 transitions. [2018-01-31 08:26:58,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2018-01-31 08:26:58,741 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:58,741 INFO L351 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:26:58,741 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr0AssertViolation]=== [2018-01-31 08:26:58,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1915722154, now seen corresponding path program 20 times [2018-01-31 08:26:58,741 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:58,741 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:58,742 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:58,742 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:26:58,742 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:59,186 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. Received shutdown request... [2018-01-31 08:29:19,200 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:265) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.access$1(Interpolator.java:263) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:132) 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.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:220) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:915) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackTraceAbstractionRefinementStrategy.getTraceCheck(MultiTrackTraceAbstractionRefinementStrategy.java:218) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:397) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:115) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:119) 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:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-01-31 08:29:19,202 INFO L168 Benchmark]: Toolchain (without parser) took 159669.25 ms. Allocated memory was 151.0 MB in the beginning and 2.2 GB in the end (delta: 2.1 GB). Free memory was 116.1 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.1 GB. Max. memory is 5.3 GB. [2018-01-31 08:29:19,203 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 151.0 MB. Free memory is still 120.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 08:29:19,203 INFO L168 Benchmark]: CACSL2BoogieTranslator took 112.84 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 107.3 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 5.3 GB. [2018-01-31 08:29:19,204 INFO L168 Benchmark]: Boogie Preprocessor took 19.47 ms. Allocated memory is still 151.0 MB. Free memory was 107.3 MB in the beginning and 105.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 5.3 GB. [2018-01-31 08:29:19,204 INFO L168 Benchmark]: RCFGBuilder took 418.58 ms. Allocated memory is still 151.0 MB. Free memory was 105.5 MB in the beginning and 87.1 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 5.3 GB. [2018-01-31 08:29:19,204 INFO L168 Benchmark]: TraceAbstraction took 159116.13 ms. Allocated memory was 151.0 MB in the beginning and 2.2 GB in the end (delta: 2.1 GB). Free memory was 86.9 MB in the beginning and 1.9 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.0 GB. Max. memory is 5.3 GB. [2018-01-31 08:29:19,205 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 151.0 MB. Free memory is still 120.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 112.84 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 107.3 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 19.47 ms. Allocated memory is still 151.0 MB. Free memory was 107.3 MB in the beginning and 105.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 5.3 GB. * RCFGBuilder took 418.58 ms. Allocated memory is still 151.0 MB. Free memory was 105.5 MB in the beginning and 87.1 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 159116.13 ms. Allocated memory was 151.0 MB in the beginning and 2.2 GB in the end (delta: 2.1 GB). Free memory was 86.9 MB in the beginning and 1.9 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.0 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:265) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/avg10_true-unreach-call_true-termination.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-31_08-29-19-209.csv Completed graceful shutdown