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/avg20_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-5f7ec6e-m [2018-01-31 08:29:21,200 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 08:29:21,201 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 08:29:21,215 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 08:29:21,216 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 08:29:21,216 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 08:29:21,217 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 08:29:21,218 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 08:29:21,219 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 08:29:21,225 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 08:29:21,225 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 08:29:21,225 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 08:29:21,226 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 08:29:21,226 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 08:29:21,227 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 08:29:21,232 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 08:29:21,233 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 08:29:21,234 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 08:29:21,235 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 08:29:21,235 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 08:29:21,236 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-31 08:29:21,238 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 08:29:21,239 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 08:29:21,239 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 08:29:21,245 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 08:29:21,245 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 08:29:21,245 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 08:29:21,245 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 08:29:21,246 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 08:29:21,246 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 08:29:21,246 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 08:29:21,246 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 08:29:21,246 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 08:29:21,246 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 08:29:21,246 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 08:29:21,246 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 08:29:21,246 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-31 08:29:21,247 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 08:29:21,247 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-31 08:29:21,247 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 08:29:21,247 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-31 08:29:21,247 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-31 08:29:21,247 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 08:29:21,247 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 08:29:21,247 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 08:29:21,247 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 08:29:21,247 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 08:29:21,247 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 08:29:21,248 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 08:29:21,248 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 08:29:21,248 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 08:29:21,248 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 08:29:21,248 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 08:29:21,248 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 08:29:21,248 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 08:29:21,248 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 08:29:21,248 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 08:29:21,249 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 08:29:21,275 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 08:29:21,289 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 08:29:21,292 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 08:29:21,292 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 08:29:21,293 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 08:29:21,293 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/avg20_true-unreach-call.i [2018-01-31 08:29:21,361 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 08:29:21,362 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-31 08:29:21,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 08:29:21,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 08:29:21,366 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 08:29:21,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:29:21" (1/1) ... [2018-01-31 08:29:21,368 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 08:29:21, skipping insertion in model container [2018-01-31 08:29:21,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:29:21" (1/1) ... [2018-01-31 08:29:21,381 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 08:29:21,391 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 08:29:21,476 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 08:29:21,492 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 08:29:21,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:29:21 WrapperNode [2018-01-31 08:29:21,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 08:29:21,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 08:29:21,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 08:29:21,498 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 08:29:21,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:29:21" (1/1) ... [2018-01-31 08:29:21,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:29:21" (1/1) ... [2018-01-31 08:29:21,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:29:21" (1/1) ... [2018-01-31 08:29:21,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:29:21" (1/1) ... [2018-01-31 08:29:21,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:29:21" (1/1) ... [2018-01-31 08:29:21,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:29:21" (1/1) ... [2018-01-31 08:29:21,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:29:21" (1/1) ... [2018-01-31 08:29:21,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 08:29:21,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 08:29:21,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 08:29:21,521 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 08:29:21,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:29:21" (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 08:29:21,566 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 08:29:21,566 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 08:29:21,566 INFO L136 BoogieDeclarations]: Found implementation of procedure avg [2018-01-31 08:29:21,566 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 08:29:21,566 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 08:29:21,566 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 08:29:21,566 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 08:29:21,567 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 08:29:21,567 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 08:29:21,567 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-31 08:29:21,567 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 08:29:21,567 INFO L128 BoogieDeclarations]: Found specification of procedure avg [2018-01-31 08:29:21,567 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 08:29:21,567 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 08:29:21,567 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 08:29:21,939 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 08:29:21,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:29:21 BoogieIcfgContainer [2018-01-31 08:29:21,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 08:29:21,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 08:29:21,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 08:29:21,942 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 08:29:21,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 08:29:21" (1/3) ... [2018-01-31 08:29:21,942 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 08:29:21, skipping insertion in model container [2018-01-31 08:29:21,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:29:21" (2/3) ... [2018-01-31 08:29:21,942 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 08:29:21, skipping insertion in model container [2018-01-31 08:29:21,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:29:21" (3/3) ... [2018-01-31 08:29:21,944 INFO L107 eAbstractionObserver]: Analyzing ICFG avg20_true-unreach-call.i [2018-01-31 08:29:21,948 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 08:29:21,952 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-31 08:29:21,982 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 08:29:21,983 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 08:29:21,983 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 08:29:21,983 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 08:29:21,983 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 08:29:21,983 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 08:29:21,983 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 08:29:21,983 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 08:29:21,984 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 08:29:21,993 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2018-01-31 08:29:21,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-01-31 08:29:21,997 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:21,998 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 08:29:21,998 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolation]=== [2018-01-31 08:29:22,001 INFO L82 PathProgramCache]: Analyzing trace with hash 951170667, now seen corresponding path program 1 times [2018-01-31 08:29:22,002 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:22,002 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:22,030 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:22,031 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:29:22,031 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:22,064 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:22,118 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 08:29:22,120 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:29:22,120 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 08:29:22,121 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-31 08:29:22,128 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-31 08:29:22,128 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 08:29:22,130 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 2 states. [2018-01-31 08:29:22,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:22,146 INFO L93 Difference]: Finished difference Result 136 states and 153 transitions. [2018-01-31 08:29:22,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-31 08:29:22,146 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 67 [2018-01-31 08:29:22,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:22,152 INFO L225 Difference]: With dead ends: 136 [2018-01-31 08:29:22,152 INFO L226 Difference]: Without dead ends: 71 [2018-01-31 08:29:22,154 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 08:29:22,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-01-31 08:29:22,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-01-31 08:29:22,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-01-31 08:29:22,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2018-01-31 08:29:22,225 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 67 [2018-01-31 08:29:22,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:22,225 INFO L432 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2018-01-31 08:29:22,225 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-31 08:29:22,225 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2018-01-31 08:29:22,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-01-31 08:29:22,227 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:22,227 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 08:29:22,227 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolation]=== [2018-01-31 08:29:22,228 INFO L82 PathProgramCache]: Analyzing trace with hash 352061447, now seen corresponding path program 1 times [2018-01-31 08:29:22,228 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:22,228 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:22,228 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:22,229 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:29:22,229 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:22,252 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:22,348 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 08:29:22,349 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:29:22,349 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 08:29:22,350 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 08:29:22,350 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 08:29:22,350 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 08:29:22,350 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 3 states. [2018-01-31 08:29:22,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:22,396 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2018-01-31 08:29:22,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 08:29:22,396 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2018-01-31 08:29:22,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:22,397 INFO L225 Difference]: With dead ends: 129 [2018-01-31 08:29:22,397 INFO L226 Difference]: Without dead ends: 78 [2018-01-31 08:29:22,398 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 08:29:22,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-01-31 08:29:22,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2018-01-31 08:29:22,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-01-31 08:29:22,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2018-01-31 08:29:22,402 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 72 [2018-01-31 08:29:22,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:22,403 INFO L432 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2018-01-31 08:29:22,403 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 08:29:22,403 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2018-01-31 08:29:22,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-01-31 08:29:22,404 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:22,404 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 08:29:22,404 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolation]=== [2018-01-31 08:29:22,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1617545872, now seen corresponding path program 1 times [2018-01-31 08:29:22,404 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:22,405 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:22,405 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:22,405 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:29:22,405 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:22,429 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:22,509 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 08:29:22,509 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:29:22,509 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) [2018-01-31 08:29:22,526 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:29:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:22,563 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:29:22,619 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 08:29:22,636 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:29:22,636 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 08:29:22,637 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 08:29:22,637 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 08:29:22,637 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 08:29:22,637 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 6 states. [2018-01-31 08:29:22,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:22,829 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2018-01-31 08:29:22,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 08:29:22,831 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2018-01-31 08:29:22,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:22,832 INFO L225 Difference]: With dead ends: 144 [2018-01-31 08:29:22,832 INFO L226 Difference]: Without dead ends: 93 [2018-01-31 08:29:22,833 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-31 08:29:22,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-01-31 08:29:22,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2018-01-31 08:29:22,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-01-31 08:29:22,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2018-01-31 08:29:22,838 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 80 [2018-01-31 08:29:22,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:22,838 INFO L432 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2018-01-31 08:29:22,838 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 08:29:22,838 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2018-01-31 08:29:22,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-01-31 08:29:22,840 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:22,840 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 08:29:22,840 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolation]=== [2018-01-31 08:29:22,840 INFO L82 PathProgramCache]: Analyzing trace with hash -904252446, now seen corresponding path program 1 times [2018-01-31 08:29:22,840 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:22,840 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:22,841 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:22,841 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:29:22,841 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:22,852 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:22,930 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 08:29:22,930 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:29:22,931 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 08:29:22,941 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:29:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:22,973 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:29:23,003 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 08:29:23,019 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:29:23,019 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 08:29:23,020 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 08:29:23,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 08:29:23,020 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 08:29:23,020 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 6 states. [2018-01-31 08:29:23,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:23,145 INFO L93 Difference]: Finished difference Result 155 states and 166 transitions. [2018-01-31 08:29:23,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 08:29:23,145 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-01-31 08:29:23,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:23,146 INFO L225 Difference]: With dead ends: 155 [2018-01-31 08:29:23,146 INFO L226 Difference]: Without dead ends: 103 [2018-01-31 08:29:23,147 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 08:29:23,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-01-31 08:29:23,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 93. [2018-01-31 08:29:23,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-01-31 08:29:23,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2018-01-31 08:29:23,153 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 112 [2018-01-31 08:29:23,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:23,153 INFO L432 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2018-01-31 08:29:23,153 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 08:29:23,153 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2018-01-31 08:29:23,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-01-31 08:29:23,155 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:23,156 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 08:29:23,156 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolation]=== [2018-01-31 08:29:23,156 INFO L82 PathProgramCache]: Analyzing trace with hash -705814942, now seen corresponding path program 1 times [2018-01-31 08:29:23,156 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:23,156 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:23,156 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:23,157 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:29:23,157 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:23,171 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:23,349 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 08:29:23,349 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:29:23,349 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 08:29:23,358 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:29:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:23,404 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:29:23,648 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 08:29:23,665 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:29:23,665 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2018-01-31 08:29:23,665 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-31 08:29:23,665 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-31 08:29:23,665 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-31 08:29:23,666 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 10 states. [2018-01-31 08:29:23,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:23,847 INFO L93 Difference]: Finished difference Result 182 states and 191 transitions. [2018-01-31 08:29:23,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-31 08:29:23,847 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 144 [2018-01-31 08:29:23,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:23,848 INFO L225 Difference]: With dead ends: 182 [2018-01-31 08:29:23,848 INFO L226 Difference]: Without dead ends: 119 [2018-01-31 08:29:23,848 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-01-31 08:29:23,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-01-31 08:29:23,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 109. [2018-01-31 08:29:23,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-01-31 08:29:23,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2018-01-31 08:29:23,854 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 144 [2018-01-31 08:29:23,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:23,855 INFO L432 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2018-01-31 08:29:23,855 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-31 08:29:23,855 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2018-01-31 08:29:23,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-01-31 08:29:23,856 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:23,856 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 08:29:23,856 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolation]=== [2018-01-31 08:29:23,856 INFO L82 PathProgramCache]: Analyzing trace with hash 448042562, now seen corresponding path program 2 times [2018-01-31 08:29:23,856 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:23,856 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:23,857 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:23,857 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:29:23,857 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:23,875 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:24,274 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 08:29:24,274 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:29:24,274 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 08:29:24,279 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:29:24,289 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:24,303 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:24,305 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:29:24,308 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:29:24,386 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 08:29:24,403 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:29:24,404 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2018-01-31 08:29:24,404 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-31 08:29:24,404 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-31 08:29:24,404 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-01-31 08:29:24,404 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 14 states. [2018-01-31 08:29:24,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:24,727 INFO L93 Difference]: Finished difference Result 206 states and 218 transitions. [2018-01-31 08:29:24,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-31 08:29:24,727 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 160 [2018-01-31 08:29:24,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:24,728 INFO L225 Difference]: With dead ends: 206 [2018-01-31 08:29:24,728 INFO L226 Difference]: Without dead ends: 135 [2018-01-31 08:29:24,729 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 08:29:24,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-01-31 08:29:24,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 125. [2018-01-31 08:29:24,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-01-31 08:29:24,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2018-01-31 08:29:24,733 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 160 [2018-01-31 08:29:24,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:24,733 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2018-01-31 08:29:24,733 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-31 08:29:24,733 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2018-01-31 08:29:24,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-01-31 08:29:24,735 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:24,735 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 08:29:24,735 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolation]=== [2018-01-31 08:29:24,735 INFO L82 PathProgramCache]: Analyzing trace with hash 651681972, now seen corresponding path program 3 times [2018-01-31 08:29:24,735 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:24,735 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:24,736 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:24,736 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:29:24,736 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:24,751 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:25,093 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 08:29:25,094 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:29:25,094 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 08:29:25,098 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:29:25,108 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:29:25,112 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:29:25,118 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:29:25,126 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:29:25,132 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:29:25,135 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:29:25,174 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 08:29:25,191 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:29:25,191 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-01-31 08:29:25,191 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 08:29:25,192 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 08:29:25,192 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-31 08:29:25,192 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand 9 states. [2018-01-31 08:29:25,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:25,235 INFO L93 Difference]: Finished difference Result 180 states and 185 transitions. [2018-01-31 08:29:25,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-31 08:29:25,235 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 192 [2018-01-31 08:29:25,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:25,236 INFO L225 Difference]: With dead ends: 180 [2018-01-31 08:29:25,236 INFO L226 Difference]: Without dead ends: 138 [2018-01-31 08:29:25,236 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 08:29:25,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-01-31 08:29:25,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 133. [2018-01-31 08:29:25,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-01-31 08:29:25,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 137 transitions. [2018-01-31 08:29:25,240 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 137 transitions. Word has length 192 [2018-01-31 08:29:25,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:25,241 INFO L432 AbstractCegarLoop]: Abstraction has 133 states and 137 transitions. [2018-01-31 08:29:25,241 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 08:29:25,242 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 137 transitions. [2018-01-31 08:29:25,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-01-31 08:29:25,243 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:25,243 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 08:29:25,243 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolation]=== [2018-01-31 08:29:25,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1257913045, now seen corresponding path program 4 times [2018-01-31 08:29:25,243 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:25,243 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:25,244 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:25,244 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:29:25,244 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:25,257 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:25,365 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 08:29:25,365 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:29:25,365 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 08:29:25,370 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:29:25,400 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:29:25,403 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:29:25,424 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 08:29:25,441 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:29:25,441 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2018-01-31 08:29:25,442 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-31 08:29:25,442 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-31 08:29:25,442 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-31 08:29:25,442 INFO L87 Difference]: Start difference. First operand 133 states and 137 transitions. Second operand 13 states. [2018-01-31 08:29:25,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:25,507 INFO L93 Difference]: Finished difference Result 233 states and 241 transitions. [2018-01-31 08:29:25,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-31 08:29:25,514 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 200 [2018-01-31 08:29:25,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:25,515 INFO L225 Difference]: With dead ends: 233 [2018-01-31 08:29:25,515 INFO L226 Difference]: Without dead ends: 146 [2018-01-31 08:29:25,515 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 08:29:25,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-31 08:29:25,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 141. [2018-01-31 08:29:25,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-01-31 08:29:25,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 145 transitions. [2018-01-31 08:29:25,519 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 145 transitions. Word has length 200 [2018-01-31 08:29:25,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:25,519 INFO L432 AbstractCegarLoop]: Abstraction has 141 states and 145 transitions. [2018-01-31 08:29:25,519 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-31 08:29:25,519 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 145 transitions. [2018-01-31 08:29:25,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-01-31 08:29:25,520 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:25,521 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 08:29:25,521 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolation]=== [2018-01-31 08:29:25,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1725930860, now seen corresponding path program 5 times [2018-01-31 08:29:25,521 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:25,521 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:25,521 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:25,521 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:29:25,522 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:25,533 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:25,659 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 08:29:25,660 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:29:25,660 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 08:29:25,669 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:29:25,677 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:25,688 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:25,699 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:25,705 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:25,707 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:29:25,709 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:29:25,779 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 08:29:25,796 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:29:25,797 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2018-01-31 08:29:25,797 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-31 08:29:25,797 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-31 08:29:25,797 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2018-01-31 08:29:25,798 INFO L87 Difference]: Start difference. First operand 141 states and 145 transitions. Second operand 20 states. [2018-01-31 08:29:26,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:26,037 INFO L93 Difference]: Finished difference Result 254 states and 266 transitions. [2018-01-31 08:29:26,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-31 08:29:26,038 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 208 [2018-01-31 08:29:26,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:26,038 INFO L225 Difference]: With dead ends: 254 [2018-01-31 08:29:26,039 INFO L226 Difference]: Without dead ends: 167 [2018-01-31 08:29:26,039 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2018-01-31 08:29:26,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-01-31 08:29:26,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 157. [2018-01-31 08:29:26,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-01-31 08:29:26,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 161 transitions. [2018-01-31 08:29:26,045 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 161 transitions. Word has length 208 [2018-01-31 08:29:26,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:26,045 INFO L432 AbstractCegarLoop]: Abstraction has 157 states and 161 transitions. [2018-01-31 08:29:26,045 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-01-31 08:29:26,045 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 161 transitions. [2018-01-31 08:29:26,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-01-31 08:29:26,047 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:26,047 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 08:29:26,047 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolation]=== [2018-01-31 08:29:26,047 INFO L82 PathProgramCache]: Analyzing trace with hash 486960902, now seen corresponding path program 6 times [2018-01-31 08:29:26,047 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:26,047 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:26,048 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:26,048 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:29:26,048 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:26,060 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:26,249 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 08:29:26,249 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:29:26,249 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 08:29:26,254 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:29:26,268 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:26,271 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:26,274 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:26,278 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:26,284 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:26,300 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:26,308 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:26,309 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:29:26,311 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:29:26,435 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 08:29:26,453 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:29:26,454 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2018-01-31 08:29:26,454 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-31 08:29:26,454 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-31 08:29:26,454 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2018-01-31 08:29:26,455 INFO L87 Difference]: Start difference. First operand 157 states and 161 transitions. Second operand 24 states. [2018-01-31 08:29:26,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:26,765 INFO L93 Difference]: Finished difference Result 278 states and 290 transitions. [2018-01-31 08:29:26,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-31 08:29:26,774 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 240 [2018-01-31 08:29:26,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:26,775 INFO L225 Difference]: With dead ends: 278 [2018-01-31 08:29:26,775 INFO L226 Difference]: Without dead ends: 183 [2018-01-31 08:29:26,776 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=365, Invalid=1527, Unknown=0, NotChecked=0, Total=1892 [2018-01-31 08:29:26,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-01-31 08:29:26,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 173. [2018-01-31 08:29:26,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-01-31 08:29:26,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 177 transitions. [2018-01-31 08:29:26,779 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 177 transitions. Word has length 240 [2018-01-31 08:29:26,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:26,779 INFO L432 AbstractCegarLoop]: Abstraction has 173 states and 177 transitions. [2018-01-31 08:29:26,779 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-31 08:29:26,779 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 177 transitions. [2018-01-31 08:29:26,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-01-31 08:29:26,781 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:26,781 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 08:29:26,781 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolation]=== [2018-01-31 08:29:26,782 INFO L82 PathProgramCache]: Analyzing trace with hash 2007982456, now seen corresponding path program 7 times [2018-01-31 08:29:26,782 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:26,782 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:26,782 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:26,782 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:29:26,782 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:26,800 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:27,183 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 08:29:27,183 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:29:27,183 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 08:29:27,190 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:29:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:27,230 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:29:27,509 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 08:29:27,526 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:29:27,526 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2018-01-31 08:29:27,527 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-31 08:29:27,527 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-31 08:29:27,527 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-31 08:29:27,527 INFO L87 Difference]: Start difference. First operand 173 states and 177 transitions. Second operand 19 states. [2018-01-31 08:29:27,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:27,767 INFO L93 Difference]: Finished difference Result 289 states and 297 transitions. [2018-01-31 08:29:27,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-31 08:29:27,770 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 272 [2018-01-31 08:29:27,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:27,771 INFO L225 Difference]: With dead ends: 289 [2018-01-31 08:29:27,771 INFO L226 Difference]: Without dead ends: 186 [2018-01-31 08:29:27,772 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 271 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 08:29:27,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-01-31 08:29:27,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 181. [2018-01-31 08:29:27,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-01-31 08:29:27,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 185 transitions. [2018-01-31 08:29:27,775 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 185 transitions. Word has length 272 [2018-01-31 08:29:27,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:27,775 INFO L432 AbstractCegarLoop]: Abstraction has 181 states and 185 transitions. [2018-01-31 08:29:27,775 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-31 08:29:27,775 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 185 transitions. [2018-01-31 08:29:27,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-01-31 08:29:27,776 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:27,776 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 08:29:27,776 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolation]=== [2018-01-31 08:29:27,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1034502687, now seen corresponding path program 8 times [2018-01-31 08:29:27,776 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:27,777 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:27,777 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:27,777 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:29:27,777 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:27,789 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:27,988 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 08:29:27,988 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:29:27,988 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 08:29:28,005 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:29:28,022 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:28,050 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:28,053 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:29:28,056 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:29:28,161 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 08:29:28,181 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:29:28,181 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-31 08:29:28,182 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 08:29:28,182 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 08:29:28,182 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-31 08:29:28,182 INFO L87 Difference]: Start difference. First operand 181 states and 185 transitions. Second operand 21 states. [2018-01-31 08:29:28,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:28,360 INFO L93 Difference]: Finished difference Result 297 states and 305 transitions. [2018-01-31 08:29:28,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-31 08:29:28,372 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 280 [2018-01-31 08:29:28,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:28,373 INFO L225 Difference]: With dead ends: 297 [2018-01-31 08:29:28,373 INFO L226 Difference]: Without dead ends: 194 [2018-01-31 08:29:28,373 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 08:29:28,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-01-31 08:29:28,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 189. [2018-01-31 08:29:28,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-31 08:29:28,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 193 transitions. [2018-01-31 08:29:28,376 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 193 transitions. Word has length 280 [2018-01-31 08:29:28,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:28,376 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 193 transitions. [2018-01-31 08:29:28,376 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 08:29:28,377 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 193 transitions. [2018-01-31 08:29:28,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-01-31 08:29:28,377 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:28,378 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 08:29:28,378 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolation]=== [2018-01-31 08:29:28,378 INFO L82 PathProgramCache]: Analyzing trace with hash -571236022, now seen corresponding path program 9 times [2018-01-31 08:29:28,378 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:28,378 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:28,378 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:28,378 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:29:28,378 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:28,389 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:28,839 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 08:29:28,840 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:29:28,840 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 08:29:28,846 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:29:28,857 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:29:28,860 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:29:28,868 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:29:28,878 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:29:28,894 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:29:28,895 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:29:28,898 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:29:29,014 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 08:29:29,033 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:29:29,033 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9] total 28 [2018-01-31 08:29:29,034 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-31 08:29:29,034 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-31 08:29:29,034 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2018-01-31 08:29:29,034 INFO L87 Difference]: Start difference. First operand 189 states and 193 transitions. Second operand 28 states. [2018-01-31 08:29:29,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:29,484 INFO L93 Difference]: Finished difference Result 318 states and 327 transitions. [2018-01-31 08:29:29,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-31 08:29:29,485 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 288 [2018-01-31 08:29:29,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:29,485 INFO L225 Difference]: With dead ends: 318 [2018-01-31 08:29:29,485 INFO L226 Difference]: Without dead ends: 215 [2018-01-31 08:29:29,486 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=575, Invalid=2077, Unknown=0, NotChecked=0, Total=2652 [2018-01-31 08:29:29,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-01-31 08:29:29,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 205. [2018-01-31 08:29:29,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-01-31 08:29:29,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 209 transitions. [2018-01-31 08:29:29,493 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 209 transitions. Word has length 288 [2018-01-31 08:29:29,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:29,493 INFO L432 AbstractCegarLoop]: Abstraction has 205 states and 209 transitions. [2018-01-31 08:29:29,493 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-31 08:29:29,493 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 209 transitions. [2018-01-31 08:29:29,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-01-31 08:29:29,500 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:29,500 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 08:29:29,500 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolation]=== [2018-01-31 08:29:29,501 INFO L82 PathProgramCache]: Analyzing trace with hash 2113676586, now seen corresponding path program 10 times [2018-01-31 08:29:29,501 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:29,501 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:29,501 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:29,501 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:29:29,501 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:29,516 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:30,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 1016 trivial. 0 not checked. [2018-01-31 08:29:30,027 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:29:30,027 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 08:29:30,031 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:29:30,082 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:29:30,086 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:29:30,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 1016 trivial. 0 not checked. [2018-01-31 08:29:30,150 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:29:30,151 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2018-01-31 08:29:30,151 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-31 08:29:30,151 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-31 08:29:30,151 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-01-31 08:29:30,151 INFO L87 Difference]: Start difference. First operand 205 states and 209 transitions. Second operand 25 states. [2018-01-31 08:29:30,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:30,370 INFO L93 Difference]: Finished difference Result 329 states and 337 transitions. [2018-01-31 08:29:30,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-31 08:29:30,370 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 304 [2018-01-31 08:29:30,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:30,371 INFO L225 Difference]: With dead ends: 329 [2018-01-31 08:29:30,371 INFO L226 Difference]: Without dead ends: 218 [2018-01-31 08:29:30,372 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2018-01-31 08:29:30,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-01-31 08:29:30,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 213. [2018-01-31 08:29:30,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-01-31 08:29:30,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 217 transitions. [2018-01-31 08:29:30,375 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 217 transitions. Word has length 304 [2018-01-31 08:29:30,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:30,375 INFO L432 AbstractCegarLoop]: Abstraction has 213 states and 217 transitions. [2018-01-31 08:29:30,375 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-31 08:29:30,375 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 217 transitions. [2018-01-31 08:29:30,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-01-31 08:29:30,376 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:30,376 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 12, 11, 11, 11, 11, 11, 11, 11, 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 08:29:30,376 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolation]=== [2018-01-31 08:29:30,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1850761837, now seen corresponding path program 11 times [2018-01-31 08:29:30,376 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:30,376 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:30,377 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:30,377 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:29:30,377 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:30,387 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:31,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1478 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 1016 trivial. 0 not checked. [2018-01-31 08:29:31,033 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:29:31,033 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 08:29:31,037 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:29:31,046 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:31,051 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:31,052 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:31,053 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:31,056 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:31,059 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:31,064 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:31,069 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:31,078 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:31,116 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:31,117 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:29:31,120 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:29:31,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1478 backedges. 454 proven. 90 refuted. 0 times theorem prover too weak. 934 trivial. 0 not checked. [2018-01-31 08:29:31,289 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:29:31,289 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13] total 36 [2018-01-31 08:29:31,289 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-31 08:29:31,289 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-31 08:29:31,290 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1045, Unknown=0, NotChecked=0, Total=1260 [2018-01-31 08:29:31,290 INFO L87 Difference]: Start difference. First operand 213 states and 217 transitions. Second operand 36 states. [2018-01-31 08:29:32,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:32,391 INFO L93 Difference]: Finished difference Result 350 states and 362 transitions. [2018-01-31 08:29:32,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-01-31 08:29:32,391 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 312 [2018-01-31 08:29:32,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:32,392 INFO L225 Difference]: With dead ends: 350 [2018-01-31 08:29:32,392 INFO L226 Difference]: Without dead ends: 239 [2018-01-31 08:29:32,393 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=895, Invalid=3661, Unknown=0, NotChecked=0, Total=4556 [2018-01-31 08:29:32,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-01-31 08:29:32,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 229. [2018-01-31 08:29:32,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-01-31 08:29:32,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2018-01-31 08:29:32,396 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 312 [2018-01-31 08:29:32,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:32,396 INFO L432 AbstractCegarLoop]: Abstraction has 229 states and 233 transitions. [2018-01-31 08:29:32,396 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-31 08:29:32,396 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 233 transitions. [2018-01-31 08:29:32,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-01-31 08:29:32,397 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:32,398 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 18, 18, 18, 13, 12, 12, 12, 12, 12, 12, 12, 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 08:29:32,398 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolation]=== [2018-01-31 08:29:32,398 INFO L82 PathProgramCache]: Analyzing trace with hash 805021189, now seen corresponding path program 12 times [2018-01-31 08:29:32,398 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:32,398 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:32,398 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:32,398 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:29:32,398 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:32,409 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:33,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1970 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 1418 trivial. 0 not checked. [2018-01-31 08:29:33,489 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:29:33,489 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 08:29:33,494 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:29:33,506 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:33,518 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:33,530 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:33,533 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:33,538 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:33,570 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:33,584 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:33,637 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:33,686 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:33,808 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:33,838 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:33,839 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:29:33,842 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:29:33,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1970 backedges. 644 proven. 56 refuted. 0 times theorem prover too weak. 1270 trivial. 0 not checked. [2018-01-31 08:29:33,970 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:29:33,970 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 11] total 36 [2018-01-31 08:29:33,971 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-31 08:29:33,971 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-31 08:29:33,971 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1031, Unknown=0, NotChecked=0, Total=1260 [2018-01-31 08:29:33,971 INFO L87 Difference]: Start difference. First operand 229 states and 233 transitions. Second operand 36 states. [2018-01-31 08:29:34,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:34,394 INFO L93 Difference]: Finished difference Result 374 states and 383 transitions. [2018-01-31 08:29:34,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-01-31 08:29:34,404 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 344 [2018-01-31 08:29:34,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:34,405 INFO L225 Difference]: With dead ends: 374 [2018-01-31 08:29:34,405 INFO L226 Difference]: Without dead ends: 255 [2018-01-31 08:29:34,406 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=965, Invalid=3591, Unknown=0, NotChecked=0, Total=4556 [2018-01-31 08:29:34,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-01-31 08:29:34,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 245. [2018-01-31 08:29:34,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-01-31 08:29:34,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 249 transitions. [2018-01-31 08:29:34,410 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 249 transitions. Word has length 344 [2018-01-31 08:29:34,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:34,410 INFO L432 AbstractCegarLoop]: Abstraction has 245 states and 249 transitions. [2018-01-31 08:29:34,410 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-31 08:29:34,410 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 249 transitions. [2018-01-31 08:29:34,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-01-31 08:29:34,411 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:34,411 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 18, 18, 18, 14, 13, 13, 13, 13, 13, 13, 13, 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 08:29:34,411 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolation]=== [2018-01-31 08:29:34,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1064452581, now seen corresponding path program 13 times [2018-01-31 08:29:34,411 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:34,411 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:34,412 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:34,412 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:29:34,412 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:34,423 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:34,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2102 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2018-01-31 08:29:34,994 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:29:34,994 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 08:29:34,999 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:29:35,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:35,037 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:29:35,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2102 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2018-01-31 08:29:35,508 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:29:35,509 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2018-01-31 08:29:35,509 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-31 08:29:35,509 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-31 08:29:35,509 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-31 08:29:35,509 INFO L87 Difference]: Start difference. First operand 245 states and 249 transitions. Second operand 31 states. [2018-01-31 08:29:36,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:36,055 INFO L93 Difference]: Finished difference Result 385 states and 393 transitions. [2018-01-31 08:29:36,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-31 08:29:36,068 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 360 [2018-01-31 08:29:36,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:36,068 INFO L225 Difference]: With dead ends: 385 [2018-01-31 08:29:36,069 INFO L226 Difference]: Without dead ends: 258 [2018-01-31 08:29:36,069 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2018-01-31 08:29:36,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-01-31 08:29:36,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 253. [2018-01-31 08:29:36,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-01-31 08:29:36,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 257 transitions. [2018-01-31 08:29:36,073 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 257 transitions. Word has length 360 [2018-01-31 08:29:36,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:36,073 INFO L432 AbstractCegarLoop]: Abstraction has 253 states and 257 transitions. [2018-01-31 08:29:36,073 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-31 08:29:36,073 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 257 transitions. [2018-01-31 08:29:36,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-01-31 08:29:36,074 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:36,074 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 18, 18, 18, 15, 14, 14, 14, 14, 14, 14, 14, 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 08:29:36,075 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolation]=== [2018-01-31 08:29:36,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1813343054, now seen corresponding path program 14 times [2018-01-31 08:29:36,075 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:36,075 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:36,075 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:36,075 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:29:36,075 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:36,091 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:36,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2208 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2018-01-31 08:29:36,509 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:29:36,509 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 08:29:36,514 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:29:36,541 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:36,572 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:36,581 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:29:36,587 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:29:36,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2208 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2018-01-31 08:29:36,730 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:29:36,730 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2018-01-31 08:29:36,730 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-31 08:29:36,730 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-31 08:29:36,731 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 08:29:36,731 INFO L87 Difference]: Start difference. First operand 253 states and 257 transitions. Second operand 33 states. [2018-01-31 08:29:37,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:37,103 INFO L93 Difference]: Finished difference Result 393 states and 401 transitions. [2018-01-31 08:29:37,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-31 08:29:37,104 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 368 [2018-01-31 08:29:37,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:37,105 INFO L225 Difference]: With dead ends: 393 [2018-01-31 08:29:37,105 INFO L226 Difference]: Without dead ends: 266 [2018-01-31 08:29:37,106 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2018-01-31 08:29:37,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-01-31 08:29:37,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 261. [2018-01-31 08:29:37,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-01-31 08:29:37,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 265 transitions. [2018-01-31 08:29:37,113 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 265 transitions. Word has length 368 [2018-01-31 08:29:37,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:37,113 INFO L432 AbstractCegarLoop]: Abstraction has 261 states and 265 transitions. [2018-01-31 08:29:37,113 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-31 08:29:37,113 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 265 transitions. [2018-01-31 08:29:37,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-01-31 08:29:37,117 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:37,117 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 18, 18, 18, 16, 15, 15, 15, 15, 15, 15, 15, 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 08:29:37,117 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolation]=== [2018-01-31 08:29:37,118 INFO L82 PathProgramCache]: Analyzing trace with hash 194059191, now seen corresponding path program 15 times [2018-01-31 08:29:37,118 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:37,118 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:37,118 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:37,118 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:29:37,118 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:37,152 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:37,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2018-01-31 08:29:37,652 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:29:37,652 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 08:29:37,656 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:29:37,668 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:29:37,679 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:29:37,695 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:29:37,709 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:29:37,722 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:29:37,761 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:29:37,793 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:29:37,794 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:29:37,797 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:29:37,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 634 proven. 132 refuted. 0 times theorem prover too weak. 1556 trivial. 0 not checked. [2018-01-31 08:29:38,013 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:29:38,013 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 15] total 46 [2018-01-31 08:29:38,013 INFO L409 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-01-31 08:29:38,014 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-01-31 08:29:38,014 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1720, Unknown=0, NotChecked=0, Total=2070 [2018-01-31 08:29:38,014 INFO L87 Difference]: Start difference. First operand 261 states and 265 transitions. Second operand 46 states. [2018-01-31 08:29:38,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:38,637 INFO L93 Difference]: Finished difference Result 414 states and 426 transitions. [2018-01-31 08:29:38,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-01-31 08:29:38,638 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 376 [2018-01-31 08:29:38,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:38,638 INFO L225 Difference]: With dead ends: 414 [2018-01-31 08:29:38,639 INFO L226 Difference]: Without dead ends: 287 [2018-01-31 08:29:38,640 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1478 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1520, Invalid=6136, Unknown=0, NotChecked=0, Total=7656 [2018-01-31 08:29:38,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-01-31 08:29:38,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 277. [2018-01-31 08:29:38,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-01-31 08:29:38,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 281 transitions. [2018-01-31 08:29:38,643 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 281 transitions. Word has length 376 [2018-01-31 08:29:38,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:38,644 INFO L432 AbstractCegarLoop]: Abstraction has 277 states and 281 transitions. [2018-01-31 08:29:38,644 INFO L433 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-01-31 08:29:38,644 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 281 transitions. [2018-01-31 08:29:38,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-01-31 08:29:38,645 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:38,645 INFO L351 BasicCegarLoop]: trace histogram [24, 21, 21, 21, 21, 21, 21, 21, 17, 16, 16, 16, 16, 16, 16, 16, 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 08:29:38,645 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolation]=== [2018-01-31 08:29:38,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1980621271, now seen corresponding path program 16 times [2018-01-31 08:29:38,645 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:38,645 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:38,646 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:38,646 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:29:38,646 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:38,658 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:39,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2918 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 1926 trivial. 0 not checked. [2018-01-31 08:29:39,469 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:29:39,469 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 08:29:39,473 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:29:39,588 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:29:39,592 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:29:39,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2918 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 1926 trivial. 0 not checked. [2018-01-31 08:29:39,788 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:29:39,788 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2018-01-31 08:29:39,788 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-31 08:29:39,789 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-31 08:29:39,789 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 08:29:39,789 INFO L87 Difference]: Start difference. First operand 277 states and 281 transitions. Second operand 37 states. [2018-01-31 08:29:40,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:40,268 INFO L93 Difference]: Finished difference Result 425 states and 433 transitions. [2018-01-31 08:29:40,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-01-31 08:29:40,269 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 408 [2018-01-31 08:29:40,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:40,270 INFO L225 Difference]: With dead ends: 425 [2018-01-31 08:29:40,270 INFO L226 Difference]: Without dead ends: 290 [2018-01-31 08:29:40,271 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2018-01-31 08:29:40,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-01-31 08:29:40,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 285. [2018-01-31 08:29:40,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-01-31 08:29:40,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 289 transitions. [2018-01-31 08:29:40,275 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 289 transitions. Word has length 408 [2018-01-31 08:29:40,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:40,275 INFO L432 AbstractCegarLoop]: Abstraction has 285 states and 289 transitions. [2018-01-31 08:29:40,275 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-31 08:29:40,275 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 289 transitions. [2018-01-31 08:29:40,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-01-31 08:29:40,276 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:40,277 INFO L351 BasicCegarLoop]: trace histogram [24, 21, 21, 21, 21, 21, 21, 21, 18, 17, 17, 17, 17, 17, 17, 17, 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 08:29:40,277 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolation]=== [2018-01-31 08:29:40,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1649446510, now seen corresponding path program 17 times [2018-01-31 08:29:40,277 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:40,277 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:40,278 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:40,278 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:29:40,278 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:40,290 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:40,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3048 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 1926 trivial. 0 not checked. [2018-01-31 08:29:40,928 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:29:40,928 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 08:29:40,933 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:29:40,942 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:40,943 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:40,944 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:40,945 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:40,947 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:40,949 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:40,951 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:40,954 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:40,961 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:40,967 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:40,974 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:40,984 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:41,003 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:41,090 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:41,152 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:41,493 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:41,494 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:29:41,498 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:29:41,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3048 backedges. 854 proven. 182 refuted. 0 times theorem prover too weak. 2012 trivial. 0 not checked. [2018-01-31 08:29:41,842 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:29:41,842 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 17] total 52 [2018-01-31 08:29:41,842 INFO L409 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-01-31 08:29:41,842 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-01-31 08:29:41,843 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=2213, Unknown=0, NotChecked=0, Total=2652 [2018-01-31 08:29:41,843 INFO L87 Difference]: Start difference. First operand 285 states and 289 transitions. Second operand 52 states. [2018-01-31 08:29:42,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:42,598 INFO L93 Difference]: Finished difference Result 446 states and 458 transitions. [2018-01-31 08:29:42,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-01-31 08:29:42,599 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 416 [2018-01-31 08:29:42,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:42,600 INFO L225 Difference]: With dead ends: 446 [2018-01-31 08:29:42,600 INFO L226 Difference]: Without dead ends: 311 [2018-01-31 08:29:42,602 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1937 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1935, Invalid=7965, Unknown=0, NotChecked=0, Total=9900 [2018-01-31 08:29:42,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-01-31 08:29:42,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 301. [2018-01-31 08:29:42,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-01-31 08:29:42,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 305 transitions. [2018-01-31 08:29:42,606 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 305 transitions. Word has length 416 [2018-01-31 08:29:42,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:42,606 INFO L432 AbstractCegarLoop]: Abstraction has 301 states and 305 transitions. [2018-01-31 08:29:42,606 INFO L433 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-01-31 08:29:42,606 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 305 transitions. [2018-01-31 08:29:42,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-01-31 08:29:42,608 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:42,608 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 24, 24, 24, 19, 18, 18, 18, 18, 18, 18, 18, 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 08:29:42,608 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolation]=== [2018-01-31 08:29:42,608 INFO L82 PathProgramCache]: Analyzing trace with hash 279541252, now seen corresponding path program 18 times [2018-01-31 08:29:42,608 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:42,608 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:42,609 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:42,609 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:29:42,609 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:42,621 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:43,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3732 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 2472 trivial. 0 not checked. [2018-01-31 08:29:43,353 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:29:43,353 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 08:29:43,357 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:29:43,370 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:43,372 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:43,375 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:43,378 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:43,383 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:43,395 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:43,404 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:43,463 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:43,520 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:43,673 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:43,765 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:44,066 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:44,418 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:44,420 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:29:44,424 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:29:44,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3732 backedges. 1108 proven. 90 refuted. 0 times theorem prover too weak. 2534 trivial. 0 not checked. [2018-01-31 08:29:44,688 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:29:44,689 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 13] total 50 [2018-01-31 08:29:44,689 INFO L409 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-01-31 08:29:44,689 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-01-31 08:29:44,690 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=446, Invalid=2004, Unknown=0, NotChecked=0, Total=2450 [2018-01-31 08:29:44,690 INFO L87 Difference]: Start difference. First operand 301 states and 305 transitions. Second operand 50 states. [2018-01-31 08:29:45,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:45,470 INFO L93 Difference]: Finished difference Result 470 states and 479 transitions. [2018-01-31 08:29:45,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-01-31 08:29:45,472 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 448 [2018-01-31 08:29:45,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:45,472 INFO L225 Difference]: With dead ends: 470 [2018-01-31 08:29:45,473 INFO L226 Difference]: Without dead ends: 327 [2018-01-31 08:29:45,473 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1746 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1980, Invalid=7140, Unknown=0, NotChecked=0, Total=9120 [2018-01-31 08:29:45,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-01-31 08:29:45,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 317. [2018-01-31 08:29:45,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-01-31 08:29:45,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 321 transitions. [2018-01-31 08:29:45,477 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 321 transitions. Word has length 448 [2018-01-31 08:29:45,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:45,477 INFO L432 AbstractCegarLoop]: Abstraction has 317 states and 321 transitions. [2018-01-31 08:29:45,477 INFO L433 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-01-31 08:29:45,477 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 321 transitions. [2018-01-31 08:29:45,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2018-01-31 08:29:45,479 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:45,479 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 24, 24, 24, 20, 19, 19, 19, 19, 19, 19, 19, 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 08:29:45,479 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr0AssertViolation]=== [2018-01-31 08:29:45,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1853480476, now seen corresponding path program 19 times [2018-01-31 08:29:45,479 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:45,479 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:45,480 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:45,480 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:29:45,480 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:45,492 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:46,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3920 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 2514 trivial. 0 not checked. [2018-01-31 08:29:46,250 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:29:46,250 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 08:29:46,255 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:29:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:46,308 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:29:46,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3920 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 2514 trivial. 0 not checked. [2018-01-31 08:29:46,701 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:29:46,702 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2018-01-31 08:29:46,702 INFO L409 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-01-31 08:29:46,702 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-01-31 08:29:46,702 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2018-01-31 08:29:46,703 INFO L87 Difference]: Start difference. First operand 317 states and 321 transitions. Second operand 43 states. [2018-01-31 08:29:47,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:47,191 INFO L93 Difference]: Finished difference Result 476 states and 484 transitions. [2018-01-31 08:29:47,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-01-31 08:29:47,191 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 464 [2018-01-31 08:29:47,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:47,192 INFO L225 Difference]: With dead ends: 476 [2018-01-31 08:29:47,192 INFO L226 Difference]: Without dead ends: 325 [2018-01-31 08:29:47,193 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2018-01-31 08:29:47,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-01-31 08:29:47,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2018-01-31 08:29:47,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-01-31 08:29:47,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 329 transitions. [2018-01-31 08:29:47,197 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 329 transitions. Word has length 464 [2018-01-31 08:29:47,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:47,198 INFO L432 AbstractCegarLoop]: Abstraction has 325 states and 329 transitions. [2018-01-31 08:29:47,198 INFO L433 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-01-31 08:29:47,198 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 329 transitions. [2018-01-31 08:29:47,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2018-01-31 08:29:47,199 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:47,200 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 24, 24, 24, 21, 20, 20, 20, 20, 20, 20, 20, 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 08:29:47,200 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr0AssertViolation]=== [2018-01-31 08:29:47,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1293539763, now seen corresponding path program 20 times [2018-01-31 08:29:47,200 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:47,200 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:47,200 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:47,201 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:29:47,201 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:47,219 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:47,788 INFO L134 CoverageAnalysis]: Checked inductivity of 4074 backedges. 0 proven. 1338 refuted. 0 times theorem prover too weak. 2736 trivial. 0 not checked. [2018-01-31 08:29:47,788 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:29:47,788 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:29:47,799 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:29:47,813 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:47,843 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:47,849 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:29:47,852 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:29:47,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4074 backedges. 1102 proven. 240 refuted. 0 times theorem prover too weak. 2732 trivial. 0 not checked. [2018-01-31 08:29:47,974 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:29:47,974 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-31 08:29:47,974 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 08:29:47,974 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 08:29:47,974 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-31 08:29:47,975 INFO L87 Difference]: Start difference. First operand 325 states and 329 transitions. Second operand 21 states. [2018-01-31 08:29:48,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:48,124 INFO L93 Difference]: Finished difference Result 488 states and 498 transitions. [2018-01-31 08:29:48,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-31 08:29:48,124 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 472 [2018-01-31 08:29:48,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:48,125 INFO L225 Difference]: With dead ends: 488 [2018-01-31 08:29:48,126 INFO L226 Difference]: Without dead ends: 338 [2018-01-31 08:29:48,126 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 471 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 08:29:48,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-01-31 08:29:48,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 333. [2018-01-31 08:29:48,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-01-31 08:29:48,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 337 transitions. [2018-01-31 08:29:48,130 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 337 transitions. Word has length 472 [2018-01-31 08:29:48,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:48,130 INFO L432 AbstractCegarLoop]: Abstraction has 333 states and 337 transitions. [2018-01-31 08:29:48,130 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 08:29:48,130 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 337 transitions. [2018-01-31 08:29:48,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2018-01-31 08:29:48,132 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:48,132 INFO L351 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 27, 21, 20, 20, 20, 20, 20, 20, 20, 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 08:29:48,132 INFO L371 AbstractCegarLoop]: === Iteration 25 === [mainErr0AssertViolation]=== [2018-01-31 08:29:48,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1564534870, now seen corresponding path program 21 times [2018-01-31 08:29:48,132 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:48,133 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:48,133 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:48,133 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:29:48,133 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:48,146 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:48,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 1684 refuted. 0 times theorem prover too weak. 3008 trivial. 0 not checked. [2018-01-31 08:29:48,533 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:29:48,533 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:29:48,538 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:29:48,552 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:29:48,556 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:29:48,561 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:29:48,571 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:29:48,581 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:29:48,616 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:29:48,645 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:29:48,708 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:29:48,709 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:29:48,712 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:29:49,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 1388 proven. 132 refuted. 0 times theorem prover too weak. 3172 trivial. 0 not checked. [2018-01-31 08:29:49,106 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:29:49,107 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15] total 34 [2018-01-31 08:29:49,107 INFO L409 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-01-31 08:29:49,107 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-01-31 08:29:49,107 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=940, Unknown=0, NotChecked=0, Total=1122 [2018-01-31 08:29:49,107 INFO L87 Difference]: Start difference. First operand 333 states and 337 transitions. Second operand 34 states. [2018-01-31 08:29:49,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:49,479 INFO L93 Difference]: Finished difference Result 517 states and 528 transitions. [2018-01-31 08:29:49,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-01-31 08:29:49,479 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 496 [2018-01-31 08:29:49,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:49,480 INFO L225 Difference]: With dead ends: 517 [2018-01-31 08:29:49,480 INFO L226 Difference]: Without dead ends: 359 [2018-01-31 08:29:49,480 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 484 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=740, Invalid=3292, Unknown=0, NotChecked=0, Total=4032 [2018-01-31 08:29:49,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-01-31 08:29:49,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 349. [2018-01-31 08:29:49,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-01-31 08:29:49,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 353 transitions. [2018-01-31 08:29:49,484 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 353 transitions. Word has length 496 [2018-01-31 08:29:49,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:49,484 INFO L432 AbstractCegarLoop]: Abstraction has 349 states and 353 transitions. [2018-01-31 08:29:49,484 INFO L433 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-01-31 08:29:49,484 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 353 transitions. [2018-01-31 08:29:49,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2018-01-31 08:29:49,486 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:49,486 INFO L351 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 30, 21, 20, 20, 20, 20, 20, 20, 20, 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 08:29:49,486 INFO L371 AbstractCegarLoop]: === Iteration 26 === [mainErr0AssertViolation]=== [2018-01-31 08:29:49,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1478174422, now seen corresponding path program 22 times [2018-01-31 08:29:49,486 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:49,486 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:49,487 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:49,487 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:29:49,487 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:49,505 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:50,075 INFO L134 CoverageAnalysis]: Checked inductivity of 5432 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2018-01-31 08:29:50,075 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:29:50,075 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:29:50,094 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:29:50,444 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:29:50,448 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:29:50,644 INFO L134 CoverageAnalysis]: Checked inductivity of 5432 backedges. 1694 proven. 380 refuted. 0 times theorem prover too weak. 3358 trivial. 0 not checked. [2018-01-31 08:29:50,662 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:29:50,662 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2018-01-31 08:29:50,663 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-31 08:29:50,663 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-31 08:29:50,663 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-01-31 08:29:50,663 INFO L87 Difference]: Start difference. First operand 349 states and 353 transitions. Second operand 25 states. [2018-01-31 08:29:50,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:50,851 INFO L93 Difference]: Finished difference Result 536 states and 546 transitions. [2018-01-31 08:29:50,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-31 08:29:50,852 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 528 [2018-01-31 08:29:50,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:50,853 INFO L225 Difference]: With dead ends: 536 [2018-01-31 08:29:50,853 INFO L226 Difference]: Without dead ends: 362 [2018-01-31 08:29:50,853 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2018-01-31 08:29:50,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2018-01-31 08:29:50,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 357. [2018-01-31 08:29:50,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-01-31 08:29:50,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 361 transitions. [2018-01-31 08:29:50,856 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 361 transitions. Word has length 528 [2018-01-31 08:29:50,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:50,857 INFO L432 AbstractCegarLoop]: Abstraction has 357 states and 361 transitions. [2018-01-31 08:29:50,857 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-31 08:29:50,857 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 361 transitions. [2018-01-31 08:29:50,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2018-01-31 08:29:50,859 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:50,859 INFO L351 BasicCegarLoop]: trace histogram [36, 33, 33, 33, 33, 33, 33, 33, 21, 20, 20, 20, 20, 20, 20, 20, 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 08:29:50,859 INFO L371 AbstractCegarLoop]: === Iteration 27 === [mainErr0AssertViolation]=== [2018-01-31 08:29:50,859 INFO L82 PathProgramCache]: Analyzing trace with hash -687633441, now seen corresponding path program 23 times [2018-01-31 08:29:50,859 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:50,859 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:50,860 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:50,860 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:29:50,860 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:50,874 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:51,397 INFO L134 CoverageAnalysis]: Checked inductivity of 6194 backedges. 0 proven. 2496 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2018-01-31 08:29:51,397 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:29:51,397 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:29:51,415 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:29:51,428 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:51,437 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:51,446 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:51,455 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:51,456 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:51,458 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:51,460 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:51,464 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:51,469 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:51,475 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:51,482 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:51,495 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:51,502 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:51,515 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:51,562 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:51,847 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:51,966 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:52,313 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:53,310 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:53,313 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:29:53,318 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:29:53,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6194 backedges. 2038 proven. 462 refuted. 0 times theorem prover too weak. 3694 trivial. 0 not checked. [2018-01-31 08:29:53,625 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:29:53,625 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2018-01-31 08:29:53,625 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-31 08:29:53,625 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-31 08:29:53,626 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2018-01-31 08:29:53,626 INFO L87 Difference]: Start difference. First operand 357 states and 361 transitions. Second operand 27 states. [2018-01-31 08:29:54,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:54,012 INFO L93 Difference]: Finished difference Result 552 states and 562 transitions. [2018-01-31 08:29:54,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-31 08:29:54,012 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 552 [2018-01-31 08:29:54,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:54,013 INFO L225 Difference]: With dead ends: 552 [2018-01-31 08:29:54,013 INFO L226 Difference]: Without dead ends: 370 [2018-01-31 08:29:54,014 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2018-01-31 08:29:54,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2018-01-31 08:29:54,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 365. [2018-01-31 08:29:54,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-01-31 08:29:54,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 369 transitions. [2018-01-31 08:29:54,017 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 369 transitions. Word has length 552 [2018-01-31 08:29:54,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:54,018 INFO L432 AbstractCegarLoop]: Abstraction has 365 states and 369 transitions. [2018-01-31 08:29:54,018 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-31 08:29:54,018 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 369 transitions. [2018-01-31 08:29:54,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2018-01-31 08:29:54,020 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:54,020 INFO L351 BasicCegarLoop]: trace histogram [39, 36, 36, 36, 36, 36, 36, 36, 21, 20, 20, 20, 20, 20, 20, 20, 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 08:29:54,020 INFO L371 AbstractCegarLoop]: === Iteration 28 === [mainErr0AssertViolation]=== [2018-01-31 08:29:54,020 INFO L82 PathProgramCache]: Analyzing trace with hash 957883880, now seen corresponding path program 24 times [2018-01-31 08:29:54,020 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:54,020 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:54,021 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:54,021 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:29:54,021 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:54,035 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:54,669 INFO L134 CoverageAnalysis]: Checked inductivity of 7028 backedges. 0 proven. 2962 refuted. 0 times theorem prover too weak. 4066 trivial. 0 not checked. [2018-01-31 08:29:54,669 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:29:54,669 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:29:54,673 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:29:54,689 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:54,691 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:54,694 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:54,697 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:54,702 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:54,710 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:54,729 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:54,760 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:54,785 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:54,818 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:54,867 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:54,897 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:54,958 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:54,993 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:55,078 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:55,484 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:55,822 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:29:55,824 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:29:55,829 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:29:56,047 INFO L134 CoverageAnalysis]: Checked inductivity of 7028 backedges. 2420 proven. 182 refuted. 0 times theorem prover too weak. 4426 trivial. 0 not checked. [2018-01-31 08:29:56,065 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:29:56,065 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 17] total 42 [2018-01-31 08:29:56,066 INFO L409 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-01-31 08:29:56,066 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-01-31 08:29:56,066 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1448, Unknown=0, NotChecked=0, Total=1722 [2018-01-31 08:29:56,066 INFO L87 Difference]: Start difference. First operand 365 states and 369 transitions. Second operand 42 states. [2018-01-31 08:29:56,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:56,654 INFO L93 Difference]: Finished difference Result 581 states and 592 transitions. [2018-01-31 08:29:56,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-01-31 08:29:56,654 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 576 [2018-01-31 08:29:56,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:56,655 INFO L225 Difference]: With dead ends: 581 [2018-01-31 08:29:56,655 INFO L226 Difference]: Without dead ends: 391 [2018-01-31 08:29:56,656 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 562 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1222 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1160, Invalid=5160, Unknown=0, NotChecked=0, Total=6320 [2018-01-31 08:29:56,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-01-31 08:29:56,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 381. [2018-01-31 08:29:56,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-01-31 08:29:56,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 385 transitions. [2018-01-31 08:29:56,670 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 385 transitions. Word has length 576 [2018-01-31 08:29:56,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:56,670 INFO L432 AbstractCegarLoop]: Abstraction has 381 states and 385 transitions. [2018-01-31 08:29:56,670 INFO L433 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-01-31 08:29:56,670 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 385 transitions. [2018-01-31 08:29:56,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2018-01-31 08:29:56,672 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:56,673 INFO L351 BasicCegarLoop]: trace histogram [42, 39, 39, 39, 39, 39, 39, 39, 21, 20, 20, 20, 20, 20, 20, 20, 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 08:29:56,673 INFO L371 AbstractCegarLoop]: === Iteration 29 === [mainErr0AssertViolation]=== [2018-01-31 08:29:56,673 INFO L82 PathProgramCache]: Analyzing trace with hash -866156440, now seen corresponding path program 25 times [2018-01-31 08:29:56,673 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:56,673 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:56,673 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:56,673 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:29:56,673 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:56,711 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:57,392 INFO L134 CoverageAnalysis]: Checked inductivity of 7992 backedges. 0 proven. 3468 refuted. 0 times theorem prover too weak. 4524 trivial. 0 not checked. [2018-01-31 08:29:57,392 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:29:57,393 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:29:57,398 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:29:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:57,456 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:29:57,585 INFO L134 CoverageAnalysis]: Checked inductivity of 7992 backedges. 2822 proven. 650 refuted. 0 times theorem prover too weak. 4520 trivial. 0 not checked. [2018-01-31 08:29:57,603 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:29:57,604 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2018-01-31 08:29:57,604 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-31 08:29:57,604 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-31 08:29:57,604 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-31 08:29:57,604 INFO L87 Difference]: Start difference. First operand 381 states and 385 transitions. Second operand 31 states. [2018-01-31 08:29:57,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:57,888 INFO L93 Difference]: Finished difference Result 600 states and 610 transitions. [2018-01-31 08:29:57,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-31 08:29:57,889 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 608 [2018-01-31 08:29:57,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:57,890 INFO L225 Difference]: With dead ends: 600 [2018-01-31 08:29:57,890 INFO L226 Difference]: Without dead ends: 394 [2018-01-31 08:29:57,890 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2018-01-31 08:29:57,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2018-01-31 08:29:57,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 389. [2018-01-31 08:29:57,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-01-31 08:29:57,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 393 transitions. [2018-01-31 08:29:57,894 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 393 transitions. Word has length 608 [2018-01-31 08:29:57,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:57,894 INFO L432 AbstractCegarLoop]: Abstraction has 389 states and 393 transitions. [2018-01-31 08:29:57,895 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-31 08:29:57,895 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 393 transitions. [2018-01-31 08:29:57,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2018-01-31 08:29:57,897 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:57,897 INFO L351 BasicCegarLoop]: trace histogram [45, 42, 42, 42, 42, 42, 42, 42, 21, 20, 20, 20, 20, 20, 20, 20, 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 08:29:57,897 INFO L371 AbstractCegarLoop]: === Iteration 30 === [mainErr0AssertViolation]=== [2018-01-31 08:29:57,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1952693617, now seen corresponding path program 26 times [2018-01-31 08:29:57,897 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:57,897 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:57,898 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:57,898 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:29:57,898 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:57,913 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:29:58,661 INFO L134 CoverageAnalysis]: Checked inductivity of 8970 backedges. 0 proven. 4014 refuted. 0 times theorem prover too weak. 4956 trivial. 0 not checked. [2018-01-31 08:29:58,661 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:29:58,661 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:29:58,666 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:29:58,681 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:58,732 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:29:58,740 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:29:58,743 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:29:58,863 INFO L134 CoverageAnalysis]: Checked inductivity of 8970 backedges. 3262 proven. 756 refuted. 0 times theorem prover too weak. 4952 trivial. 0 not checked. [2018-01-31 08:29:58,880 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:29:58,880 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2018-01-31 08:29:58,881 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-31 08:29:58,881 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-31 08:29:58,881 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 08:29:58,881 INFO L87 Difference]: Start difference. First operand 389 states and 393 transitions. Second operand 33 states. [2018-01-31 08:29:59,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:29:59,166 INFO L93 Difference]: Finished difference Result 616 states and 626 transitions. [2018-01-31 08:29:59,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-31 08:29:59,166 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 632 [2018-01-31 08:29:59,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:29:59,168 INFO L225 Difference]: With dead ends: 616 [2018-01-31 08:29:59,168 INFO L226 Difference]: Without dead ends: 402 [2018-01-31 08:29:59,169 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2018-01-31 08:29:59,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2018-01-31 08:29:59,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 397. [2018-01-31 08:29:59,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-01-31 08:29:59,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 401 transitions. [2018-01-31 08:29:59,174 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 401 transitions. Word has length 632 [2018-01-31 08:29:59,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:29:59,174 INFO L432 AbstractCegarLoop]: Abstraction has 397 states and 401 transitions. [2018-01-31 08:29:59,174 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-31 08:29:59,174 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 401 transitions. [2018-01-31 08:29:59,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2018-01-31 08:29:59,177 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:29:59,177 INFO L351 BasicCegarLoop]: trace histogram [48, 45, 45, 45, 45, 45, 45, 45, 21, 20, 20, 20, 20, 20, 20, 20, 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 08:29:59,177 INFO L371 AbstractCegarLoop]: === Iteration 31 === [mainErr0AssertViolation]=== [2018-01-31 08:29:59,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1620848506, now seen corresponding path program 27 times [2018-01-31 08:29:59,177 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:29:59,177 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:29:59,178 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:59,178 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:29:59,178 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:29:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:29:59,193 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:30:00,053 INFO L134 CoverageAnalysis]: Checked inductivity of 10020 backedges. 0 proven. 4600 refuted. 0 times theorem prover too weak. 5420 trivial. 0 not checked. [2018-01-31 08:30:00,053 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:30:00,053 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:30:00,058 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:30:00,074 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:00,078 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:00,083 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:00,091 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:00,112 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:00,130 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:00,151 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:00,188 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:00,209 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:00,239 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:00,241 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:30:00,246 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:30:00,628 INFO L134 CoverageAnalysis]: Checked inductivity of 10020 backedges. 3894 proven. 240 refuted. 0 times theorem prover too weak. 5886 trivial. 0 not checked. [2018-01-31 08:30:00,647 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:30:00,647 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 22] total 53 [2018-01-31 08:30:00,648 INFO L409 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-01-31 08:30:00,648 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-01-31 08:30:00,648 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=2363, Unknown=0, NotChecked=0, Total=2756 [2018-01-31 08:30:00,648 INFO L87 Difference]: Start difference. First operand 397 states and 401 transitions. Second operand 53 states. [2018-01-31 08:30:02,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:30:02,056 INFO L93 Difference]: Finished difference Result 645 states and 656 transitions. [2018-01-31 08:30:02,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-01-31 08:30:02,056 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 656 [2018-01-31 08:30:02,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:30:02,058 INFO L225 Difference]: With dead ends: 645 [2018-01-31 08:30:02,058 INFO L226 Difference]: Without dead ends: 423 [2018-01-31 08:30:02,059 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2487 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1901, Invalid=10089, Unknown=0, NotChecked=0, Total=11990 [2018-01-31 08:30:02,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-01-31 08:30:02,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 413. [2018-01-31 08:30:02,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-01-31 08:30:02,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 417 transitions. [2018-01-31 08:30:02,073 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 417 transitions. Word has length 656 [2018-01-31 08:30:02,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:30:02,074 INFO L432 AbstractCegarLoop]: Abstraction has 413 states and 417 transitions. [2018-01-31 08:30:02,074 INFO L433 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-01-31 08:30:02,074 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 417 transitions. [2018-01-31 08:30:02,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2018-01-31 08:30:02,076 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:30:02,076 INFO L351 BasicCegarLoop]: trace histogram [51, 48, 48, 48, 48, 48, 48, 48, 21, 20, 20, 20, 20, 20, 20, 20, 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 08:30:02,081 INFO L371 AbstractCegarLoop]: === Iteration 32 === [mainErr0AssertViolation]=== [2018-01-31 08:30:02,081 INFO L82 PathProgramCache]: Analyzing trace with hash -2060671494, now seen corresponding path program 28 times [2018-01-31 08:30:02,081 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:30:02,081 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:30:02,082 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:30:02,082 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:30:02,082 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:30:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:30:02,118 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:30:03,147 INFO L134 CoverageAnalysis]: Checked inductivity of 11208 backedges. 0 proven. 5226 refuted. 0 times theorem prover too weak. 5982 trivial. 0 not checked. [2018-01-31 08:30:03,147 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:30:03,147 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:30:03,152 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:30:03,752 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:30:03,757 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:30:03,890 INFO L134 CoverageAnalysis]: Checked inductivity of 11208 backedges. 4238 proven. 992 refuted. 0 times theorem prover too weak. 5978 trivial. 0 not checked. [2018-01-31 08:30:03,909 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:30:03,909 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2018-01-31 08:30:03,910 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-31 08:30:03,910 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-31 08:30:03,910 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 08:30:03,910 INFO L87 Difference]: Start difference. First operand 413 states and 417 transitions. Second operand 37 states. [2018-01-31 08:30:05,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:30:05,760 INFO L93 Difference]: Finished difference Result 664 states and 674 transitions. [2018-01-31 08:30:05,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-01-31 08:30:05,761 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 688 [2018-01-31 08:30:05,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:30:05,762 INFO L225 Difference]: With dead ends: 664 [2018-01-31 08:30:05,762 INFO L226 Difference]: Without dead ends: 426 [2018-01-31 08:30:05,762 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 687 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2018-01-31 08:30:05,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2018-01-31 08:30:05,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 421. [2018-01-31 08:30:05,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-01-31 08:30:05,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 425 transitions. [2018-01-31 08:30:05,769 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 425 transitions. Word has length 688 [2018-01-31 08:30:05,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:30:05,770 INFO L432 AbstractCegarLoop]: Abstraction has 421 states and 425 transitions. [2018-01-31 08:30:05,770 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-31 08:30:05,770 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 425 transitions. [2018-01-31 08:30:05,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 713 [2018-01-31 08:30:05,773 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:30:05,773 INFO L351 BasicCegarLoop]: trace histogram [54, 51, 51, 51, 51, 51, 51, 51, 21, 20, 20, 20, 20, 20, 20, 20, 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 08:30:05,773 INFO L371 AbstractCegarLoop]: === Iteration 33 === [mainErr0AssertViolation]=== [2018-01-31 08:30:05,773 INFO L82 PathProgramCache]: Analyzing trace with hash -994657533, now seen corresponding path program 29 times [2018-01-31 08:30:05,773 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:30:05,773 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:30:05,774 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:30:05,774 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:30:05,774 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:30:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:30:05,791 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:30:08,320 INFO L134 CoverageAnalysis]: Checked inductivity of 12402 backedges. 0 proven. 5892 refuted. 0 times theorem prover too weak. 6510 trivial. 0 not checked. [2018-01-31 08:30:08,320 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:30:08,320 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:30:08,325 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:30:08,341 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:08,342 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:08,345 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:08,348 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:08,351 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:08,356 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:08,360 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:08,365 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:08,372 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:08,379 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:08,388 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:08,396 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:08,430 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:08,541 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:08,749 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:08,816 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:09,287 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:10,193 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:10,857 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:10,860 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:30:10,867 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:30:11,021 INFO L134 CoverageAnalysis]: Checked inductivity of 12402 backedges. 4774 proven. 1122 refuted. 0 times theorem prover too weak. 6506 trivial. 0 not checked. [2018-01-31 08:30:11,040 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:30:11,040 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2018-01-31 08:30:11,041 INFO L409 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-01-31 08:30:11,041 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-01-31 08:30:11,041 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2018-01-31 08:30:11,041 INFO L87 Difference]: Start difference. First operand 421 states and 425 transitions. Second operand 39 states. [2018-01-31 08:30:11,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:30:11,415 INFO L93 Difference]: Finished difference Result 680 states and 690 transitions. [2018-01-31 08:30:11,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-01-31 08:30:11,415 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 712 [2018-01-31 08:30:11,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:30:11,416 INFO L225 Difference]: With dead ends: 680 [2018-01-31 08:30:11,416 INFO L226 Difference]: Without dead ends: 434 [2018-01-31 08:30:11,416 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 711 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2018-01-31 08:30:11,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-01-31 08:30:11,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 429. [2018-01-31 08:30:11,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2018-01-31 08:30:11,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 433 transitions. [2018-01-31 08:30:11,420 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 433 transitions. Word has length 712 [2018-01-31 08:30:11,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:30:11,421 INFO L432 AbstractCegarLoop]: Abstraction has 429 states and 433 transitions. [2018-01-31 08:30:11,421 INFO L433 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-01-31 08:30:11,421 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 433 transitions. [2018-01-31 08:30:11,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2018-01-31 08:30:11,423 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:30:11,424 INFO L351 BasicCegarLoop]: trace histogram [57, 54, 54, 54, 54, 54, 54, 54, 21, 20, 20, 20, 20, 20, 20, 20, 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 08:30:11,424 INFO L371 AbstractCegarLoop]: === Iteration 34 === [mainErr0AssertViolation]=== [2018-01-31 08:30:11,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1803355404, now seen corresponding path program 30 times [2018-01-31 08:30:11,424 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:30:11,424 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:30:11,424 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:30:11,425 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:30:11,425 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:30:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:30:11,441 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:30:12,668 INFO L134 CoverageAnalysis]: Checked inductivity of 13668 backedges. 0 proven. 6598 refuted. 0 times theorem prover too weak. 7070 trivial. 0 not checked. [2018-01-31 08:30:12,669 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:30:12,669 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:30:12,673 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:30:12,691 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:12,693 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:12,697 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:12,701 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:12,707 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:12,721 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:12,768 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:12,849 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:12,863 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:12,895 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:12,980 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:13,083 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:13,497 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:13,947 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:14,211 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:14,455 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:14,934 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:15,020 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:15,102 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:15,268 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:15,705 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:15,708 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:30:15,717 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:30:16,122 INFO L134 CoverageAnalysis]: Checked inductivity of 13668 backedges. 5348 proven. 306 refuted. 0 times theorem prover too weak. 8014 trivial. 0 not checked. [2018-01-31 08:30:16,144 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:30:16,144 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 21] total 58 [2018-01-31 08:30:16,145 INFO L409 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-01-31 08:30:16,145 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-01-31 08:30:16,145 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=518, Invalid=2788, Unknown=0, NotChecked=0, Total=3306 [2018-01-31 08:30:16,145 INFO L87 Difference]: Start difference. First operand 429 states and 433 transitions. Second operand 58 states. [2018-01-31 08:30:17,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:30:17,173 INFO L93 Difference]: Finished difference Result 709 states and 720 transitions. [2018-01-31 08:30:17,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-01-31 08:30:17,173 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 736 [2018-01-31 08:30:17,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:30:17,174 INFO L225 Difference]: With dead ends: 709 [2018-01-31 08:30:17,174 INFO L226 Difference]: Without dead ends: 455 [2018-01-31 08:30:17,175 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 718 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2474 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2300, Invalid=10132, Unknown=0, NotChecked=0, Total=12432 [2018-01-31 08:30:17,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2018-01-31 08:30:17,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 445. [2018-01-31 08:30:17,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2018-01-31 08:30:17,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 449 transitions. [2018-01-31 08:30:17,179 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 449 transitions. Word has length 736 [2018-01-31 08:30:17,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:30:17,180 INFO L432 AbstractCegarLoop]: Abstraction has 445 states and 449 transitions. [2018-01-31 08:30:17,180 INFO L433 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-01-31 08:30:17,180 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 449 transitions. [2018-01-31 08:30:17,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2018-01-31 08:30:17,183 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:30:17,183 INFO L351 BasicCegarLoop]: trace histogram [60, 57, 57, 57, 57, 57, 57, 57, 21, 20, 20, 20, 20, 20, 20, 20, 11, 10, 10, 10, 10, 10, 10, 10, 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 08:30:17,183 INFO L371 AbstractCegarLoop]: === Iteration 35 === [mainErr0AssertViolation]=== [2018-01-31 08:30:17,183 INFO L82 PathProgramCache]: Analyzing trace with hash 775067532, now seen corresponding path program 31 times [2018-01-31 08:30:17,183 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:30:17,183 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:30:17,184 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:30:17,184 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:30:17,184 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:30:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:30:17,200 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:30:18,498 INFO L134 CoverageAnalysis]: Checked inductivity of 15080 backedges. 0 proven. 7344 refuted. 0 times theorem prover too weak. 7736 trivial. 0 not checked. [2018-01-31 08:30:18,499 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:30:18,499 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:30:18,509 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:30:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:30:18,586 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:30:18,774 INFO L134 CoverageAnalysis]: Checked inductivity of 15080 backedges. 5942 proven. 1406 refuted. 0 times theorem prover too weak. 7732 trivial. 0 not checked. [2018-01-31 08:30:18,794 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:30:18,794 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2018-01-31 08:30:18,795 INFO L409 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-01-31 08:30:18,795 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-01-31 08:30:18,795 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2018-01-31 08:30:18,795 INFO L87 Difference]: Start difference. First operand 445 states and 449 transitions. Second operand 43 states. [2018-01-31 08:30:19,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:30:19,280 INFO L93 Difference]: Finished difference Result 723 states and 733 transitions. [2018-01-31 08:30:19,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-01-31 08:30:19,281 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 768 [2018-01-31 08:30:19,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:30:19,282 INFO L225 Difference]: With dead ends: 723 [2018-01-31 08:30:19,282 INFO L226 Difference]: Without dead ends: 453 [2018-01-31 08:30:19,283 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 846 GetRequests, 767 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2018-01-31 08:30:19,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2018-01-31 08:30:19,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 453. [2018-01-31 08:30:19,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2018-01-31 08:30:19,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 457 transitions. [2018-01-31 08:30:19,287 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 457 transitions. Word has length 768 [2018-01-31 08:30:19,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:30:19,287 INFO L432 AbstractCegarLoop]: Abstraction has 453 states and 457 transitions. [2018-01-31 08:30:19,287 INFO L433 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-01-31 08:30:19,287 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 457 transitions. [2018-01-31 08:30:19,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2018-01-31 08:30:19,290 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:30:19,290 INFO L351 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 60, 60, 60, 21, 20, 20, 20, 20, 20, 20, 20, 11, 10, 10, 10, 10, 10, 10, 10, 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 08:30:19,290 INFO L371 AbstractCegarLoop]: === Iteration 36 === [mainErr0AssertViolation]=== [2018-01-31 08:30:19,291 INFO L82 PathProgramCache]: Analyzing trace with hash -777223019, now seen corresponding path program 32 times [2018-01-31 08:30:19,291 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:30:19,291 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:30:19,291 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:30:19,291 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:30:19,291 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:30:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:30:19,309 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:30:20,067 INFO L134 CoverageAnalysis]: Checked inductivity of 16490 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 16110 trivial. 0 not checked. [2018-01-31 08:30:20,067 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:30:20,067 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:30:20,072 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:30:20,091 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:20,137 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:20,146 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:30:20,151 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:30:20,316 INFO L134 CoverageAnalysis]: Checked inductivity of 16490 backedges. 6580 proven. 380 refuted. 0 times theorem prover too weak. 9530 trivial. 0 not checked. [2018-01-31 08:30:20,332 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:30:20,333 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2018-01-31 08:30:20,333 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-31 08:30:20,333 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-31 08:30:20,333 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-01-31 08:30:20,333 INFO L87 Difference]: Start difference. First operand 453 states and 457 transitions. Second operand 25 states. [2018-01-31 08:30:20,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:30:20,553 INFO L93 Difference]: Finished difference Result 644 states and 649 transitions. [2018-01-31 08:30:20,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-31 08:30:20,556 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 792 [2018-01-31 08:30:20,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:30:20,557 INFO L225 Difference]: With dead ends: 644 [2018-01-31 08:30:20,557 INFO L226 Difference]: Without dead ends: 466 [2018-01-31 08:30:20,557 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 791 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2018-01-31 08:30:20,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2018-01-31 08:30:20,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 461. [2018-01-31 08:30:20,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-01-31 08:30:20,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 465 transitions. [2018-01-31 08:30:20,562 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 465 transitions. Word has length 792 [2018-01-31 08:30:20,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:30:20,562 INFO L432 AbstractCegarLoop]: Abstraction has 461 states and 465 transitions. [2018-01-31 08:30:20,562 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-31 08:30:20,562 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 465 transitions. [2018-01-31 08:30:20,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2018-01-31 08:30:20,566 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:30:20,566 INFO L351 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 60, 60, 60, 21, 20, 20, 20, 20, 20, 20, 20, 12, 11, 11, 11, 11, 11, 11, 11, 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 08:30:20,567 INFO L371 AbstractCegarLoop]: === Iteration 37 === [mainErr0AssertViolation]=== [2018-01-31 08:30:20,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1326082572, now seen corresponding path program 33 times [2018-01-31 08:30:20,567 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:30:20,567 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:30:20,567 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:30:20,567 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:30:20,567 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:30:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:30:20,588 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:30:21,437 INFO L134 CoverageAnalysis]: Checked inductivity of 16572 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 16110 trivial. 0 not checked. [2018-01-31 08:30:21,438 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:30:21,438 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:30:21,442 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:30:21,461 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:21,465 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:21,471 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:21,478 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:21,492 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:21,502 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:21,522 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:21,535 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:21,579 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:21,604 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:21,643 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:21,666 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:21,739 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:21,741 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:30:21,746 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:30:21,931 INFO L134 CoverageAnalysis]: Checked inductivity of 16572 backedges. 6580 proven. 462 refuted. 0 times theorem prover too weak. 9530 trivial. 0 not checked. [2018-01-31 08:30:21,948 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:30:21,949 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2018-01-31 08:30:21,949 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-31 08:30:21,949 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-31 08:30:21,949 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2018-01-31 08:30:21,949 INFO L87 Difference]: Start difference. First operand 461 states and 465 transitions. Second operand 27 states. [2018-01-31 08:30:22,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:30:22,153 INFO L93 Difference]: Finished difference Result 652 states and 657 transitions. [2018-01-31 08:30:22,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-31 08:30:22,155 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 800 [2018-01-31 08:30:22,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:30:22,156 INFO L225 Difference]: With dead ends: 652 [2018-01-31 08:30:22,156 INFO L226 Difference]: Without dead ends: 474 [2018-01-31 08:30:22,157 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 846 GetRequests, 799 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2018-01-31 08:30:22,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2018-01-31 08:30:22,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 469. [2018-01-31 08:30:22,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2018-01-31 08:30:22,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 473 transitions. [2018-01-31 08:30:22,160 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 473 transitions. Word has length 800 [2018-01-31 08:30:22,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:30:22,161 INFO L432 AbstractCegarLoop]: Abstraction has 469 states and 473 transitions. [2018-01-31 08:30:22,161 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-31 08:30:22,161 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 473 transitions. [2018-01-31 08:30:22,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2018-01-31 08:30:22,164 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:30:22,164 INFO L351 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 60, 60, 60, 21, 20, 20, 20, 20, 20, 20, 20, 13, 12, 12, 12, 12, 12, 12, 12, 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 08:30:22,164 INFO L371 AbstractCegarLoop]: === Iteration 38 === [mainErr0AssertViolation]=== [2018-01-31 08:30:22,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1115875459, now seen corresponding path program 34 times [2018-01-31 08:30:22,165 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:30:22,165 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:30:22,165 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:30:22,165 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:30:22,165 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:30:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:30:22,182 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:30:23,087 INFO L134 CoverageAnalysis]: Checked inductivity of 16662 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 16110 trivial. 0 not checked. [2018-01-31 08:30:23,088 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:30:23,088 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:30:23,093 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:30:23,956 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:30:23,962 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:30:24,144 INFO L134 CoverageAnalysis]: Checked inductivity of 16662 backedges. 6580 proven. 552 refuted. 0 times theorem prover too weak. 9530 trivial. 0 not checked. [2018-01-31 08:30:24,165 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:30:24,165 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2018-01-31 08:30:24,166 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-31 08:30:24,166 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-31 08:30:24,166 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2018-01-31 08:30:24,166 INFO L87 Difference]: Start difference. First operand 469 states and 473 transitions. Second operand 29 states. [2018-01-31 08:30:24,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:30:24,423 INFO L93 Difference]: Finished difference Result 660 states and 665 transitions. [2018-01-31 08:30:24,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-01-31 08:30:24,423 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 808 [2018-01-31 08:30:24,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:30:24,424 INFO L225 Difference]: With dead ends: 660 [2018-01-31 08:30:24,424 INFO L226 Difference]: Without dead ends: 482 [2018-01-31 08:30:24,425 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 858 GetRequests, 807 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2018-01-31 08:30:24,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2018-01-31 08:30:24,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 477. [2018-01-31 08:30:24,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2018-01-31 08:30:24,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 481 transitions. [2018-01-31 08:30:24,429 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 481 transitions. Word has length 808 [2018-01-31 08:30:24,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:30:24,429 INFO L432 AbstractCegarLoop]: Abstraction has 477 states and 481 transitions. [2018-01-31 08:30:24,429 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-31 08:30:24,429 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 481 transitions. [2018-01-31 08:30:24,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2018-01-31 08:30:24,433 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:30:24,433 INFO L351 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 60, 60, 60, 21, 20, 20, 20, 20, 20, 20, 20, 14, 13, 13, 13, 13, 13, 13, 13, 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 08:30:24,433 INFO L371 AbstractCegarLoop]: === Iteration 39 === [mainErr0AssertViolation]=== [2018-01-31 08:30:24,433 INFO L82 PathProgramCache]: Analyzing trace with hash -663945222, now seen corresponding path program 35 times [2018-01-31 08:30:24,433 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:30:24,434 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:30:24,434 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:30:24,434 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:30:24,434 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:30:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:30:24,453 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:30:25,463 INFO L134 CoverageAnalysis]: Checked inductivity of 16760 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 16110 trivial. 0 not checked. [2018-01-31 08:30:25,463 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:30:25,463 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:30:25,468 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:30:25,485 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:25,487 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:25,490 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:25,493 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:25,496 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:25,499 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:25,503 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:25,508 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:25,514 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:25,521 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:25,534 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:25,592 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:25,655 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:25,724 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:26,018 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:26,167 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:26,695 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:27,096 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:28,073 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:28,786 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:30,451 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:32,084 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:32,089 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:30:32,101 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:30:32,278 INFO L134 CoverageAnalysis]: Checked inductivity of 16760 backedges. 6580 proven. 650 refuted. 0 times theorem prover too weak. 9530 trivial. 0 not checked. [2018-01-31 08:30:32,300 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:30:32,301 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2018-01-31 08:30:32,301 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-31 08:30:32,301 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-31 08:30:32,301 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-31 08:30:32,301 INFO L87 Difference]: Start difference. First operand 477 states and 481 transitions. Second operand 31 states. [2018-01-31 08:30:32,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:30:32,585 INFO L93 Difference]: Finished difference Result 668 states and 673 transitions. [2018-01-31 08:30:32,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-31 08:30:32,585 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 816 [2018-01-31 08:30:32,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:30:32,586 INFO L225 Difference]: With dead ends: 668 [2018-01-31 08:30:32,586 INFO L226 Difference]: Without dead ends: 490 [2018-01-31 08:30:32,587 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 870 GetRequests, 815 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2018-01-31 08:30:32,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2018-01-31 08:30:32,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 485. [2018-01-31 08:30:32,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2018-01-31 08:30:32,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 489 transitions. [2018-01-31 08:30:32,591 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 489 transitions. Word has length 816 [2018-01-31 08:30:32,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:30:32,591 INFO L432 AbstractCegarLoop]: Abstraction has 485 states and 489 transitions. [2018-01-31 08:30:32,592 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-31 08:30:32,592 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 489 transitions. [2018-01-31 08:30:32,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 825 [2018-01-31 08:30:32,595 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:30:32,595 INFO L351 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 60, 60, 60, 21, 20, 20, 20, 20, 20, 20, 20, 15, 14, 14, 14, 14, 14, 14, 14, 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 08:30:32,595 INFO L371 AbstractCegarLoop]: === Iteration 40 === [mainErr0AssertViolation]=== [2018-01-31 08:30:32,595 INFO L82 PathProgramCache]: Analyzing trace with hash -165695375, now seen corresponding path program 36 times [2018-01-31 08:30:32,595 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:30:32,596 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:30:32,596 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:30:32,596 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:30:32,596 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:30:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:30:32,614 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:30:33,650 INFO L134 CoverageAnalysis]: Checked inductivity of 16866 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 16110 trivial. 0 not checked. [2018-01-31 08:30:33,650 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:30:33,650 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:30:33,655 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:30:33,674 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:33,676 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:33,679 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:33,682 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:33,687 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:33,701 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:33,716 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:33,762 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:33,781 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:33,862 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:33,910 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:33,960 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:34,009 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:34,127 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:34,178 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:34,308 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:34,616 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:34,720 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:35,373 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:35,892 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:36,627 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:36,851 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:37,152 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:30:37,156 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:30:37,166 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:30:37,340 INFO L134 CoverageAnalysis]: Checked inductivity of 16866 backedges. 6580 proven. 756 refuted. 0 times theorem prover too weak. 9530 trivial. 0 not checked. [2018-01-31 08:30:37,360 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:30:37,360 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2018-01-31 08:30:37,360 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-31 08:30:37,361 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-31 08:30:37,361 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 08:30:37,361 INFO L87 Difference]: Start difference. First operand 485 states and 489 transitions. Second operand 33 states. [2018-01-31 08:30:37,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:30:37,655 INFO L93 Difference]: Finished difference Result 676 states and 681 transitions. [2018-01-31 08:30:37,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-31 08:30:37,655 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 824 [2018-01-31 08:30:37,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:30:37,656 INFO L225 Difference]: With dead ends: 676 [2018-01-31 08:30:37,656 INFO L226 Difference]: Without dead ends: 498 [2018-01-31 08:30:37,657 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 823 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2018-01-31 08:30:37,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2018-01-31 08:30:37,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 493. [2018-01-31 08:30:37,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2018-01-31 08:30:37,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 497 transitions. [2018-01-31 08:30:37,661 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 497 transitions. Word has length 824 [2018-01-31 08:30:37,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:30:37,661 INFO L432 AbstractCegarLoop]: Abstraction has 493 states and 497 transitions. [2018-01-31 08:30:37,661 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-31 08:30:37,661 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 497 transitions. [2018-01-31 08:30:37,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 833 [2018-01-31 08:30:37,665 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:30:37,665 INFO L351 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 60, 60, 60, 21, 20, 20, 20, 20, 20, 20, 20, 16, 15, 15, 15, 15, 15, 15, 15, 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 08:30:37,665 INFO L371 AbstractCegarLoop]: === Iteration 41 === [mainErr0AssertViolation]=== [2018-01-31 08:30:37,665 INFO L82 PathProgramCache]: Analyzing trace with hash 972159464, now seen corresponding path program 37 times [2018-01-31 08:30:37,665 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:30:37,665 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:30:37,666 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:30:37,666 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:30:37,666 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:30:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:30:37,684 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:30:38,809 INFO L134 CoverageAnalysis]: Checked inductivity of 16980 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 16110 trivial. 0 not checked. [2018-01-31 08:30:38,809 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:30:38,809 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:30:38,814 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:30:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:30:38,896 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:30:39,080 INFO L134 CoverageAnalysis]: Checked inductivity of 16980 backedges. 6580 proven. 870 refuted. 0 times theorem prover too weak. 9530 trivial. 0 not checked. [2018-01-31 08:30:39,097 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:30:39,098 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2018-01-31 08:30:39,098 INFO L409 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-01-31 08:30:39,098 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-01-31 08:30:39,098 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2018-01-31 08:30:39,099 INFO L87 Difference]: Start difference. First operand 493 states and 497 transitions. Second operand 35 states. [2018-01-31 08:30:39,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:30:39,457 INFO L93 Difference]: Finished difference Result 684 states and 689 transitions. [2018-01-31 08:30:39,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-01-31 08:30:39,458 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 832 [2018-01-31 08:30:39,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:30:39,460 INFO L225 Difference]: With dead ends: 684 [2018-01-31 08:30:39,460 INFO L226 Difference]: Without dead ends: 506 [2018-01-31 08:30:39,460 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 831 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2018-01-31 08:30:39,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2018-01-31 08:30:39,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 501. [2018-01-31 08:30:39,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2018-01-31 08:30:39,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 505 transitions. [2018-01-31 08:30:39,465 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 505 transitions. Word has length 832 [2018-01-31 08:30:39,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:30:39,465 INFO L432 AbstractCegarLoop]: Abstraction has 501 states and 505 transitions. [2018-01-31 08:30:39,465 INFO L433 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-01-31 08:30:39,465 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 505 transitions. [2018-01-31 08:30:39,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 841 [2018-01-31 08:30:39,469 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:30:39,469 INFO L351 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 60, 60, 60, 21, 20, 20, 20, 20, 20, 20, 20, 17, 16, 16, 16, 16, 16, 16, 16, 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 08:30:39,470 INFO L371 AbstractCegarLoop]: === Iteration 42 === [mainErr0AssertViolation]=== [2018-01-31 08:30:39,470 INFO L82 PathProgramCache]: Analyzing trace with hash -80028577, now seen corresponding path program 38 times [2018-01-31 08:30:39,470 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:30:39,470 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:30:39,470 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:30:39,470 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:30:39,470 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:30:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:30:39,489 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:30:40,690 INFO L134 CoverageAnalysis]: Checked inductivity of 17102 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 16110 trivial. 0 not checked. [2018-01-31 08:30:40,690 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:30:40,690 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:30:40,695 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:30:40,716 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:40,763 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:30:40,773 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:30:40,777 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:30:40,960 INFO L134 CoverageAnalysis]: Checked inductivity of 17102 backedges. 6580 proven. 992 refuted. 0 times theorem prover too weak. 9530 trivial. 0 not checked. [2018-01-31 08:30:40,978 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:30:40,978 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2018-01-31 08:30:40,979 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-31 08:30:40,979 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-31 08:30:40,979 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 08:30:40,979 INFO L87 Difference]: Start difference. First operand 501 states and 505 transitions. Second operand 37 states. [2018-01-31 08:30:41,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:30:41,376 INFO L93 Difference]: Finished difference Result 692 states and 697 transitions. [2018-01-31 08:30:41,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-01-31 08:30:41,378 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 840 [2018-01-31 08:30:41,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:30:41,380 INFO L225 Difference]: With dead ends: 692 [2018-01-31 08:30:41,380 INFO L226 Difference]: Without dead ends: 514 [2018-01-31 08:30:41,380 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 839 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2018-01-31 08:30:41,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2018-01-31 08:30:41,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 509. [2018-01-31 08:30:41,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2018-01-31 08:30:41,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 513 transitions. [2018-01-31 08:30:41,385 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 513 transitions. Word has length 840 [2018-01-31 08:30:41,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:30:41,385 INFO L432 AbstractCegarLoop]: Abstraction has 509 states and 513 transitions. [2018-01-31 08:30:41,385 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-31 08:30:41,385 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 513 transitions. [2018-01-31 08:30:41,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 849 [2018-01-31 08:30:41,389 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:30:41,389 INFO L351 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 60, 60, 60, 21, 20, 20, 20, 20, 20, 20, 20, 18, 17, 17, 17, 17, 17, 17, 17, 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 08:30:41,389 INFO L371 AbstractCegarLoop]: === Iteration 43 === [mainErr0AssertViolation]=== [2018-01-31 08:30:41,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1246844886, now seen corresponding path program 39 times [2018-01-31 08:30:41,390 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:30:41,390 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:30:41,390 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:30:41,390 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:30:41,390 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:30:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:30:41,409 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:30:42,717 INFO L134 CoverageAnalysis]: Checked inductivity of 17232 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 16110 trivial. 0 not checked. [2018-01-31 08:30:42,718 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:30:42,718 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:30:42,724 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:30:42,745 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:42,748 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:42,754 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:42,762 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:42,772 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:42,806 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:42,836 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:42,905 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:43,132 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:43,275 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:43,407 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:43,440 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:43,509 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:43,688 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:43,941 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:44,296 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:45,107 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:45,873 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:46,337 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:30:46,342 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:30:46,352 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:30:46,596 INFO L134 CoverageAnalysis]: Checked inductivity of 17232 backedges. 6734 proven. 1122 refuted. 0 times theorem prover too weak. 9376 trivial. 0 not checked. [2018-01-31 08:30:46,616 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:30:46,617 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 40] total 42 [2018-01-31 08:30:46,617 INFO L409 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-01-31 08:30:46,617 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-01-31 08:30:46,617 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=1316, Unknown=0, NotChecked=0, Total=1722 [2018-01-31 08:30:46,618 INFO L87 Difference]: Start difference. First operand 509 states and 513 transitions. Second operand 42 states. [2018-01-31 08:30:47,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:30:47,392 INFO L93 Difference]: Finished difference Result 700 states and 705 transitions. [2018-01-31 08:30:47,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-01-31 08:30:47,392 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 848 [2018-01-31 08:30:47,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:30:47,393 INFO L225 Difference]: With dead ends: 700 [2018-01-31 08:30:47,393 INFO L226 Difference]: Without dead ends: 522 [2018-01-31 08:30:47,394 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 938 GetRequests, 844 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2136 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2413, Invalid=6707, Unknown=0, NotChecked=0, Total=9120 [2018-01-31 08:30:47,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2018-01-31 08:30:47,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 517. [2018-01-31 08:30:47,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 517 states. [2018-01-31 08:30:47,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 521 transitions. [2018-01-31 08:30:47,400 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 521 transitions. Word has length 848 [2018-01-31 08:30:47,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:30:47,401 INFO L432 AbstractCegarLoop]: Abstraction has 517 states and 521 transitions. [2018-01-31 08:30:47,401 INFO L433 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-01-31 08:30:47,401 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 521 transitions. [2018-01-31 08:30:47,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2018-01-31 08:30:47,405 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:30:47,405 INFO L351 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 60, 60, 60, 21, 20, 20, 20, 20, 20, 20, 20, 19, 18, 18, 18, 18, 18, 18, 18, 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 08:30:47,405 INFO L371 AbstractCegarLoop]: === Iteration 44 === [mainErr0AssertViolation]=== [2018-01-31 08:30:47,405 INFO L82 PathProgramCache]: Analyzing trace with hash -259232691, now seen corresponding path program 40 times [2018-01-31 08:30:47,405 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:30:47,405 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:30:47,406 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:30:47,406 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:30:47,406 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:30:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:30:47,424 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:30:48,782 INFO L134 CoverageAnalysis]: Checked inductivity of 17370 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 16110 trivial. 0 not checked. [2018-01-31 08:30:48,782 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:30:48,782 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:30:48,787 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:30:49,565 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:30:49,572 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:30:49,775 INFO L134 CoverageAnalysis]: Checked inductivity of 17370 backedges. 6580 proven. 1260 refuted. 0 times theorem prover too weak. 9530 trivial. 0 not checked. [2018-01-31 08:30:49,796 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:30:49,796 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2018-01-31 08:30:49,797 INFO L409 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-01-31 08:30:49,797 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-01-31 08:30:49,797 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2018-01-31 08:30:49,797 INFO L87 Difference]: Start difference. First operand 517 states and 521 transitions. Second operand 41 states. [2018-01-31 08:30:50,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:30:50,252 INFO L93 Difference]: Finished difference Result 703 states and 708 transitions. [2018-01-31 08:30:50,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-01-31 08:30:50,252 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 856 [2018-01-31 08:30:50,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:30:50,253 INFO L225 Difference]: With dead ends: 703 [2018-01-31 08:30:50,253 INFO L226 Difference]: Without dead ends: 525 [2018-01-31 08:30:50,254 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 930 GetRequests, 855 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2018-01-31 08:30:50,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2018-01-31 08:30:50,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2018-01-31 08:30:50,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-01-31 08:30:50,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 529 transitions. [2018-01-31 08:30:50,258 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 529 transitions. Word has length 856 [2018-01-31 08:30:50,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:30:50,259 INFO L432 AbstractCegarLoop]: Abstraction has 525 states and 529 transitions. [2018-01-31 08:30:50,259 INFO L433 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-01-31 08:30:50,259 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 529 transitions. [2018-01-31 08:30:50,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2018-01-31 08:30:50,262 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:30:50,263 INFO L351 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 60, 60, 60, 21, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 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 08:30:50,263 INFO L371 AbstractCegarLoop]: === Iteration 45 === [mainErr0AssertViolation]=== [2018-01-31 08:30:50,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1883445700, now seen corresponding path program 41 times [2018-01-31 08:30:50,263 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:30:50,263 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:30:50,264 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:30:50,264 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:30:50,264 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:30:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:30:53,489 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 08:31:46,717 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.walkResolutionNode(Interpolator.java:235) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.access$0(Interpolator.java:233) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:130) 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 08:31:46,720 INFO L168 Benchmark]: Toolchain (without parser) took 145358.34 ms. Allocated memory was 148.9 MB in the beginning and 2.2 GB in the end (delta: 2.0 GB). Free memory was 113.9 MB in the beginning and 942.6 MB in the end (delta: -828.8 MB). Peak memory consumption was 2.1 GB. Max. memory is 5.3 GB. [2018-01-31 08:31:46,720 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 148.9 MB. Free memory is still 118.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 08:31:46,720 INFO L168 Benchmark]: CACSL2BoogieTranslator took 134.99 ms. Allocated memory is still 148.9 MB. Free memory was 113.7 MB in the beginning and 105.1 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 5.3 GB. [2018-01-31 08:31:46,721 INFO L168 Benchmark]: Boogie Preprocessor took 22.73 ms. Allocated memory is still 148.9 MB. Free memory was 105.1 MB in the beginning and 103.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 5.3 GB. [2018-01-31 08:31:46,721 INFO L168 Benchmark]: RCFGBuilder took 418.84 ms. Allocated memory is still 148.9 MB. Free memory was 103.3 MB in the beginning and 84.5 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 5.3 GB. [2018-01-31 08:31:46,721 INFO L168 Benchmark]: TraceAbstraction took 144779.57 ms. Allocated memory was 148.9 MB in the beginning and 2.2 GB in the end (delta: 2.0 GB). Free memory was 84.3 MB in the beginning and 942.6 MB in the end (delta: -858.4 MB). Peak memory consumption was 2.1 GB. Max. memory is 5.3 GB. [2018-01-31 08:31:46,722 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 148.9 MB. Free memory is still 118.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 134.99 ms. Allocated memory is still 148.9 MB. Free memory was 113.7 MB in the beginning and 105.1 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 22.73 ms. Allocated memory is still 148.9 MB. Free memory was 105.1 MB in the beginning and 103.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 5.3 GB. * RCFGBuilder took 418.84 ms. Allocated memory is still 148.9 MB. Free memory was 103.3 MB in the beginning and 84.5 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 5.3 GB. * TraceAbstraction took 144779.57 ms. Allocated memory was 148.9 MB in the beginning and 2.2 GB in the end (delta: 2.0 GB). Free memory was 84.3 MB in the beginning and 942.6 MB in the end (delta: -858.4 MB). Peak memory consumption was 2.1 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.walkResolutionNode(Interpolator.java:235) 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/avg20_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-31_08-31-46-727.csv Completed graceful shutdown