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/sum20_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-5f7ec6e-m [2018-01-31 09:29:29,361 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 09:29:29,363 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 09:29:29,376 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 09:29:29,376 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 09:29:29,377 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 09:29:29,377 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 09:29:29,378 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 09:29:29,379 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 09:29:29,380 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 09:29:29,380 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 09:29:29,380 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 09:29:29,381 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 09:29:29,381 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 09:29:29,382 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 09:29:29,383 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 09:29:29,384 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 09:29:29,385 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 09:29:29,388 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 09:29:29,389 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 09:29:29,390 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-31 09:29:29,392 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 09:29:29,392 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 09:29:29,393 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 09:29:29,400 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 09:29:29,400 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 09:29:29,403 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 09:29:29,403 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 09:29:29,403 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 09:29:29,403 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 09:29:29,404 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 09:29:29,404 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 09:29:29,404 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 09:29:29,404 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 09:29:29,404 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 09:29:29,404 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 09:29:29,404 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-31 09:29:29,404 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 09:29:29,405 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-31 09:29:29,405 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 09:29:29,405 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-31 09:29:29,405 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-31 09:29:29,405 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 09:29:29,405 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 09:29:29,405 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 09:29:29,405 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 09:29:29,405 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 09:29:29,405 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 09:29:29,405 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 09:29:29,405 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 09:29:29,406 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 09:29:29,406 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 09:29:29,406 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 09:29:29,406 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 09:29:29,406 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 09:29:29,406 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 09:29:29,406 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 09:29:29,406 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 09:29:29,432 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 09:29:29,440 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 09:29:29,444 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 09:29:29,445 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 09:29:29,445 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 09:29:29,445 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum20_true-unreach-call.i [2018-01-31 09:29:29,517 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 09:29:29,519 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-31 09:29:29,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 09:29:29,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 09:29:29,524 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 09:29:29,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:29:29" (1/1) ... [2018-01-31 09:29:29,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d3bf5cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:29:29, skipping insertion in model container [2018-01-31 09:29:29,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:29:29" (1/1) ... [2018-01-31 09:29:29,537 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:29:29,546 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:29:29,632 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:29:29,645 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:29:29,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:29:29 WrapperNode [2018-01-31 09:29:29,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 09:29:29,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 09:29:29,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 09:29:29,649 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 09:29:29,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:29:29" (1/1) ... [2018-01-31 09:29:29,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:29:29" (1/1) ... [2018-01-31 09:29:29,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:29:29" (1/1) ... [2018-01-31 09:29:29,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:29:29" (1/1) ... [2018-01-31 09:29:29,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:29:29" (1/1) ... [2018-01-31 09:29:29,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:29:29" (1/1) ... [2018-01-31 09:29:29,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:29:29" (1/1) ... [2018-01-31 09:29:29,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 09:29:29,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 09:29:29,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 09:29:29,669 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 09:29:29,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:29:29" (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 09:29:29,712 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 09:29:29,712 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 09:29:29,712 INFO L136 BoogieDeclarations]: Found implementation of procedure sum [2018-01-31 09:29:29,712 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 09:29:29,712 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 09:29:29,713 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 09:29:29,713 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 09:29:29,713 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 09:29:29,713 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 09:29:29,713 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-31 09:29:29,713 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 09:29:29,713 INFO L128 BoogieDeclarations]: Found specification of procedure sum [2018-01-31 09:29:29,713 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 09:29:29,713 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 09:29:29,713 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 09:29:30,036 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 09:29:30,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:29:30 BoogieIcfgContainer [2018-01-31 09:29:30,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 09:29:30,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 09:29:30,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 09:29:30,039 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 09:29:30,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 09:29:29" (1/3) ... [2018-01-31 09:29:30,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25765f6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:29:30, skipping insertion in model container [2018-01-31 09:29:30,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:29:29" (2/3) ... [2018-01-31 09:29:30,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25765f6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:29:30, skipping insertion in model container [2018-01-31 09:29:30,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:29:30" (3/3) ... [2018-01-31 09:29:30,041 INFO L107 eAbstractionObserver]: Analyzing ICFG sum20_true-unreach-call.i [2018-01-31 09:29:30,046 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 09:29:30,051 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-31 09:29:30,075 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 09:29:30,075 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 09:29:30,075 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 09:29:30,075 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 09:29:30,075 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 09:29:30,075 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 09:29:30,075 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 09:29:30,075 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 09:29:30,076 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 09:29:30,085 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2018-01-31 09:29:30,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-01-31 09:29:30,090 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:29:30,091 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 09:29:30,091 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolation]=== [2018-01-31 09:29:30,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1274758379, now seen corresponding path program 1 times [2018-01-31 09:29:30,094 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:29:30,095 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:29:30,123 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:30,123 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:29:30,123 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:30,153 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:29:30,205 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 09:29:30,207 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:29:30,207 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 09:29:30,208 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-31 09:29:30,215 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-31 09:29:30,216 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 09:29:30,217 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 2 states. [2018-01-31 09:29:30,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:29:30,233 INFO L93 Difference]: Finished difference Result 136 states and 153 transitions. [2018-01-31 09:29:30,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-31 09:29:30,234 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 67 [2018-01-31 09:29:30,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:29:30,239 INFO L225 Difference]: With dead ends: 136 [2018-01-31 09:29:30,239 INFO L226 Difference]: Without dead ends: 71 [2018-01-31 09:29:30,241 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 09:29:30,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-01-31 09:29:30,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-01-31 09:29:30,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-01-31 09:29:30,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2018-01-31 09:29:30,266 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 67 [2018-01-31 09:29:30,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:29:30,267 INFO L432 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2018-01-31 09:29:30,267 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-31 09:29:30,267 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2018-01-31 09:29:30,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-01-31 09:29:30,269 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:29:30,269 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 09:29:30,269 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolation]=== [2018-01-31 09:29:30,269 INFO L82 PathProgramCache]: Analyzing trace with hash -780571542, now seen corresponding path program 1 times [2018-01-31 09:29:30,269 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:29:30,270 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:29:30,270 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:30,270 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:29:30,270 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:30,360 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:29:30,434 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 09:29:30,434 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:29:30,434 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 09:29:30,435 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 09:29:30,436 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 09:29:30,436 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 09:29:30,436 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 3 states. [2018-01-31 09:29:30,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:29:30,529 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2018-01-31 09:29:30,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 09:29:30,531 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2018-01-31 09:29:30,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:29:30,531 INFO L225 Difference]: With dead ends: 129 [2018-01-31 09:29:30,531 INFO L226 Difference]: Without dead ends: 78 [2018-01-31 09:29:30,532 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 09:29:30,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-01-31 09:29:30,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2018-01-31 09:29:30,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-01-31 09:29:30,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2018-01-31 09:29:30,537 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 72 [2018-01-31 09:29:30,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:29:30,538 INFO L432 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2018-01-31 09:29:30,538 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 09:29:30,538 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2018-01-31 09:29:30,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-01-31 09:29:30,539 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:29:30,540 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 09:29:30,540 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolation]=== [2018-01-31 09:29:30,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1544788435, now seen corresponding path program 1 times [2018-01-31 09:29:30,540 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:29:30,540 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:29:30,543 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:30,543 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:29:30,543 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:30,558 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:29:30,664 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 09:29:30,665 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:29:30,665 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:29:30,681 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:29:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:30,723 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:29:30,824 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 09:29:30,841 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:29:30,842 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 09:29:30,842 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 09:29:30,842 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 09:29:30,842 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 09:29:30,842 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 6 states. [2018-01-31 09:29:31,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:29:31,044 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2018-01-31 09:29:31,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 09:29:31,044 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2018-01-31 09:29:31,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:29:31,045 INFO L225 Difference]: With dead ends: 144 [2018-01-31 09:29:31,045 INFO L226 Difference]: Without dead ends: 93 [2018-01-31 09:29:31,045 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-31 09:29:31,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-01-31 09:29:31,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2018-01-31 09:29:31,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-01-31 09:29:31,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2018-01-31 09:29:31,050 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 80 [2018-01-31 09:29:31,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:29:31,050 INFO L432 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2018-01-31 09:29:31,050 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 09:29:31,050 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2018-01-31 09:29:31,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-01-31 09:29:31,052 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:29:31,052 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 09:29:31,052 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolation]=== [2018-01-31 09:29:31,052 INFO L82 PathProgramCache]: Analyzing trace with hash 278598597, now seen corresponding path program 1 times [2018-01-31 09:29:31,052 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:29:31,052 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:29:31,053 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:31,053 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:29:31,053 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:31,064 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:29:31,147 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 09:29:31,147 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:29:31,149 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) [2018-01-31 09:29:31,157 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:29:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:31,194 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:29:31,208 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 09:29:31,225 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:29:31,225 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 09:29:31,226 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 09:29:31,226 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 09:29:31,226 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 09:29:31,226 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 6 states. [2018-01-31 09:29:31,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:29:31,371 INFO L93 Difference]: Finished difference Result 155 states and 166 transitions. [2018-01-31 09:29:31,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 09:29:31,371 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-01-31 09:29:31,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:29:31,372 INFO L225 Difference]: With dead ends: 155 [2018-01-31 09:29:31,372 INFO L226 Difference]: Without dead ends: 103 [2018-01-31 09:29:31,372 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 09:29:31,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-01-31 09:29:31,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 93. [2018-01-31 09:29:31,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-01-31 09:29:31,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2018-01-31 09:29:31,377 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 112 [2018-01-31 09:29:31,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:29:31,377 INFO L432 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2018-01-31 09:29:31,377 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 09:29:31,377 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2018-01-31 09:29:31,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-01-31 09:29:31,379 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:29:31,380 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 09:29:31,380 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolation]=== [2018-01-31 09:29:31,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1429723589, now seen corresponding path program 1 times [2018-01-31 09:29:31,380 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:29:31,380 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:29:31,381 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:31,381 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:29:31,381 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:31,411 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:29:31,475 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 09:29:31,475 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:29:31,476 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 09:29:31,480 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:29:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:31,512 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:29:31,739 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 09:29:31,755 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:29:31,756 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2018-01-31 09:29:31,756 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-31 09:29:31,756 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-31 09:29:31,756 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-31 09:29:31,757 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 10 states. [2018-01-31 09:29:31,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:29:31,969 INFO L93 Difference]: Finished difference Result 182 states and 191 transitions. [2018-01-31 09:29:31,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-31 09:29:31,970 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 144 [2018-01-31 09:29:31,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:29:31,971 INFO L225 Difference]: With dead ends: 182 [2018-01-31 09:29:31,971 INFO L226 Difference]: Without dead ends: 119 [2018-01-31 09:29:31,972 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-01-31 09:29:31,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-01-31 09:29:31,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 109. [2018-01-31 09:29:31,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-01-31 09:29:31,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2018-01-31 09:29:31,978 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 144 [2018-01-31 09:29:31,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:29:31,978 INFO L432 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2018-01-31 09:29:31,978 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-31 09:29:31,978 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2018-01-31 09:29:31,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-01-31 09:29:31,979 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:29:31,979 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 09:29:31,979 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolation]=== [2018-01-31 09:29:31,979 INFO L82 PathProgramCache]: Analyzing trace with hash 918434213, now seen corresponding path program 2 times [2018-01-31 09:29:31,980 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:29:31,980 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:29:31,980 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:31,980 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:29:31,980 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:31,999 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:29:32,105 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 09:29:32,105 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:29:32,105 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 09:29:32,109 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:29:32,120 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:32,144 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:32,147 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:29:32,150 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:29:32,298 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 09:29:32,315 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:29:32,315 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2018-01-31 09:29:32,316 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-31 09:29:32,316 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-31 09:29:32,316 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-01-31 09:29:32,316 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 14 states. [2018-01-31 09:29:32,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:29:32,465 INFO L93 Difference]: Finished difference Result 206 states and 218 transitions. [2018-01-31 09:29:32,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-31 09:29:32,466 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 160 [2018-01-31 09:29:32,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:29:32,466 INFO L225 Difference]: With dead ends: 206 [2018-01-31 09:29:32,466 INFO L226 Difference]: Without dead ends: 135 [2018-01-31 09:29:32,467 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2018-01-31 09:29:32,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-01-31 09:29:32,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 125. [2018-01-31 09:29:32,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-01-31 09:29:32,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2018-01-31 09:29:32,472 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 160 [2018-01-31 09:29:32,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:29:32,472 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2018-01-31 09:29:32,472 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-31 09:29:32,472 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2018-01-31 09:29:32,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-01-31 09:29:32,473 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:29:32,474 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 09:29:32,476 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolation]=== [2018-01-31 09:29:32,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1059719273, now seen corresponding path program 3 times [2018-01-31 09:29:32,476 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:29:32,476 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:29:32,477 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:32,477 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:29:32,477 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:32,495 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:29:32,625 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 09:29:32,625 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:29:32,625 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 09:29:32,630 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:29:32,639 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:29:32,644 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:29:32,661 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:29:32,679 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:29:32,680 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:29:32,683 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:29:32,720 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 09:29:32,738 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:29:32,738 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-01-31 09:29:32,738 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 09:29:32,738 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 09:29:32,738 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-31 09:29:32,738 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand 9 states. [2018-01-31 09:29:32,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:29:32,789 INFO L93 Difference]: Finished difference Result 180 states and 185 transitions. [2018-01-31 09:29:32,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-31 09:29:32,790 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 192 [2018-01-31 09:29:32,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:29:32,790 INFO L225 Difference]: With dead ends: 180 [2018-01-31 09:29:32,790 INFO L226 Difference]: Without dead ends: 138 [2018-01-31 09:29:32,791 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-01-31 09:29:32,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-01-31 09:29:32,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 133. [2018-01-31 09:29:32,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-01-31 09:29:32,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 137 transitions. [2018-01-31 09:29:32,797 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 137 transitions. Word has length 192 [2018-01-31 09:29:32,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:29:32,798 INFO L432 AbstractCegarLoop]: Abstraction has 133 states and 137 transitions. [2018-01-31 09:29:32,798 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 09:29:32,798 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 137 transitions. [2018-01-31 09:29:32,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-01-31 09:29:32,800 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:29:32,800 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 09:29:32,800 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolation]=== [2018-01-31 09:29:32,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1802943502, now seen corresponding path program 4 times [2018-01-31 09:29:32,800 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:29:32,800 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:29:32,800 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:32,801 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:29:32,801 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:32,815 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:29:33,050 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 09:29:33,050 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:29:33,051 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 09:29:33,057 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:29:33,100 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:29:33,102 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:29:33,179 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 09:29:33,197 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:29:33,197 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2018-01-31 09:29:33,197 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-31 09:29:33,197 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-31 09:29:33,197 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-31 09:29:33,198 INFO L87 Difference]: Start difference. First operand 133 states and 137 transitions. Second operand 13 states. [2018-01-31 09:29:33,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:29:33,329 INFO L93 Difference]: Finished difference Result 233 states and 241 transitions. [2018-01-31 09:29:33,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-31 09:29:33,341 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 200 [2018-01-31 09:29:33,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:29:33,341 INFO L225 Difference]: With dead ends: 233 [2018-01-31 09:29:33,341 INFO L226 Difference]: Without dead ends: 146 [2018-01-31 09:29:33,342 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2018-01-31 09:29:33,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-31 09:29:33,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 141. [2018-01-31 09:29:33,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-01-31 09:29:33,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 145 transitions. [2018-01-31 09:29:33,346 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 145 transitions. Word has length 200 [2018-01-31 09:29:33,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:29:33,346 INFO L432 AbstractCegarLoop]: Abstraction has 141 states and 145 transitions. [2018-01-31 09:29:33,346 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-31 09:29:33,346 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 145 transitions. [2018-01-31 09:29:33,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-01-31 09:29:33,347 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:29:33,348 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 09:29:33,348 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolation]=== [2018-01-31 09:29:33,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1334925687, now seen corresponding path program 5 times [2018-01-31 09:29:33,348 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:29:33,348 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:29:33,348 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:33,348 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:29:33,348 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:33,368 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:29:33,500 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 09:29:33,500 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:29:33,500 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 09:29:33,505 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:29:33,518 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:33,533 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:33,537 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:33,543 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:33,544 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:29:33,546 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:29:33,616 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 09:29:33,634 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:29:33,634 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2018-01-31 09:29:33,634 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-31 09:29:33,635 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-31 09:29:33,635 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2018-01-31 09:29:33,635 INFO L87 Difference]: Start difference. First operand 141 states and 145 transitions. Second operand 20 states. [2018-01-31 09:29:33,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:29:33,927 INFO L93 Difference]: Finished difference Result 254 states and 266 transitions. [2018-01-31 09:29:33,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-31 09:29:33,929 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 208 [2018-01-31 09:29:33,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:29:33,930 INFO L225 Difference]: With dead ends: 254 [2018-01-31 09:29:33,930 INFO L226 Difference]: Without dead ends: 167 [2018-01-31 09:29:33,930 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 09:29:33,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-01-31 09:29:33,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 157. [2018-01-31 09:29:33,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-01-31 09:29:33,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 161 transitions. [2018-01-31 09:29:33,934 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 161 transitions. Word has length 208 [2018-01-31 09:29:33,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:29:33,934 INFO L432 AbstractCegarLoop]: Abstraction has 157 states and 161 transitions. [2018-01-31 09:29:33,934 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-01-31 09:29:33,934 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 161 transitions. [2018-01-31 09:29:33,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-01-31 09:29:33,936 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:29:33,936 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 09:29:33,936 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolation]=== [2018-01-31 09:29:33,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1311007081, now seen corresponding path program 6 times [2018-01-31 09:29:33,936 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:29:33,937 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:29:33,937 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:33,937 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:29:33,937 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:33,949 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:29:34,137 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 09:29:34,138 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:29:34,138 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 09:29:34,144 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:29:34,155 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:34,157 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:34,161 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:34,166 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:34,171 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:34,186 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:34,194 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:34,195 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:29:34,197 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:29:34,299 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 09:29:34,317 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:29:34,318 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2018-01-31 09:29:34,318 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-31 09:29:34,318 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-31 09:29:34,318 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2018-01-31 09:29:34,318 INFO L87 Difference]: Start difference. First operand 157 states and 161 transitions. Second operand 24 states. [2018-01-31 09:29:34,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:29:34,614 INFO L93 Difference]: Finished difference Result 278 states and 290 transitions. [2018-01-31 09:29:34,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-31 09:29:34,622 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 240 [2018-01-31 09:29:34,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:29:34,623 INFO L225 Difference]: With dead ends: 278 [2018-01-31 09:29:34,623 INFO L226 Difference]: Without dead ends: 183 [2018-01-31 09:29:34,624 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=365, Invalid=1527, Unknown=0, NotChecked=0, Total=1892 [2018-01-31 09:29:34,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-01-31 09:29:34,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 173. [2018-01-31 09:29:34,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-01-31 09:29:34,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 177 transitions. [2018-01-31 09:29:34,627 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 177 transitions. Word has length 240 [2018-01-31 09:29:34,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:29:34,630 INFO L432 AbstractCegarLoop]: Abstraction has 173 states and 177 transitions. [2018-01-31 09:29:34,630 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-31 09:29:34,630 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 177 transitions. [2018-01-31 09:29:34,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-01-31 09:29:34,631 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:29:34,631 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 09:29:34,632 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolation]=== [2018-01-31 09:29:34,632 INFO L82 PathProgramCache]: Analyzing trace with hash 438292315, now seen corresponding path program 7 times [2018-01-31 09:29:34,632 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:29:34,632 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:29:34,632 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:34,632 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:29:34,632 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:34,644 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:29:35,064 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 09:29:35,064 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:29:35,064 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 09:29:35,069 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:29:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:35,113 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:29:35,458 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 09:29:35,476 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:29:35,476 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2018-01-31 09:29:35,477 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-31 09:29:35,477 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-31 09:29:35,477 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-31 09:29:35,477 INFO L87 Difference]: Start difference. First operand 173 states and 177 transitions. Second operand 19 states. [2018-01-31 09:29:35,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:29:35,675 INFO L93 Difference]: Finished difference Result 289 states and 297 transitions. [2018-01-31 09:29:35,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-31 09:29:35,687 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 272 [2018-01-31 09:29:35,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:29:35,688 INFO L225 Difference]: With dead ends: 289 [2018-01-31 09:29:35,688 INFO L226 Difference]: Without dead ends: 186 [2018-01-31 09:29:35,689 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 09:29:35,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-01-31 09:29:35,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 181. [2018-01-31 09:29:35,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-01-31 09:29:35,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 185 transitions. [2018-01-31 09:29:35,693 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 185 transitions. Word has length 272 [2018-01-31 09:29:35,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:29:35,694 INFO L432 AbstractCegarLoop]: Abstraction has 181 states and 185 transitions. [2018-01-31 09:29:35,694 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-31 09:29:35,694 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 185 transitions. [2018-01-31 09:29:35,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-01-31 09:29:35,695 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:29:35,695 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 09:29:35,695 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolation]=== [2018-01-31 09:29:35,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1690774468, now seen corresponding path program 8 times [2018-01-31 09:29:35,695 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:29:35,695 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:29:35,696 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:35,696 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:29:35,696 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:35,727 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:29:36,077 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 09:29:36,077 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:29:36,077 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 09:29:36,087 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:29:36,102 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:36,121 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:36,124 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:29:36,127 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:29:36,186 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 09:29:36,216 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:29:36,216 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-31 09:29:36,217 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 09:29:36,217 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 09:29:36,217 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-31 09:29:36,217 INFO L87 Difference]: Start difference. First operand 181 states and 185 transitions. Second operand 21 states. [2018-01-31 09:29:36,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:29:36,443 INFO L93 Difference]: Finished difference Result 297 states and 305 transitions. [2018-01-31 09:29:36,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-31 09:29:36,451 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 280 [2018-01-31 09:29:36,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:29:36,451 INFO L225 Difference]: With dead ends: 297 [2018-01-31 09:29:36,452 INFO L226 Difference]: Without dead ends: 194 [2018-01-31 09:29:36,452 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 09:29:36,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-01-31 09:29:36,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 189. [2018-01-31 09:29:36,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-31 09:29:36,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 193 transitions. [2018-01-31 09:29:36,456 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 193 transitions. Word has length 280 [2018-01-31 09:29:36,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:29:36,456 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 193 transitions. [2018-01-31 09:29:36,456 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 09:29:36,456 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 193 transitions. [2018-01-31 09:29:36,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-01-31 09:29:36,457 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:29:36,457 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 09:29:36,457 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolation]=== [2018-01-31 09:29:36,457 INFO L82 PathProgramCache]: Analyzing trace with hash -2140926163, now seen corresponding path program 9 times [2018-01-31 09:29:36,458 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:29:36,458 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:29:36,458 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:36,458 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:29:36,458 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:36,469 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:29:36,730 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 09:29:36,730 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:29:36,730 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 09:29:36,736 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:29:36,745 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:29:36,750 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:29:36,755 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:29:36,763 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:29:36,780 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:29:36,781 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:29:36,784 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:29:36,879 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 09:29:36,897 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:29:36,897 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9] total 28 [2018-01-31 09:29:36,898 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-31 09:29:36,898 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-31 09:29:36,898 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2018-01-31 09:29:36,898 INFO L87 Difference]: Start difference. First operand 189 states and 193 transitions. Second operand 28 states. [2018-01-31 09:29:37,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:29:37,226 INFO L93 Difference]: Finished difference Result 318 states and 327 transitions. [2018-01-31 09:29:37,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-31 09:29:37,226 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 288 [2018-01-31 09:29:37,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:29:37,227 INFO L225 Difference]: With dead ends: 318 [2018-01-31 09:29:37,227 INFO L226 Difference]: Without dead ends: 215 [2018-01-31 09:29:37,228 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=575, Invalid=2077, Unknown=0, NotChecked=0, Total=2652 [2018-01-31 09:29:37,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-01-31 09:29:37,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 205. [2018-01-31 09:29:37,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-01-31 09:29:37,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 209 transitions. [2018-01-31 09:29:37,231 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 209 transitions. Word has length 288 [2018-01-31 09:29:37,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:29:37,231 INFO L432 AbstractCegarLoop]: Abstraction has 205 states and 209 transitions. [2018-01-31 09:29:37,231 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-31 09:29:37,231 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 209 transitions. [2018-01-31 09:29:37,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-01-31 09:29:37,232 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:29:37,232 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 09:29:37,232 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolation]=== [2018-01-31 09:29:37,233 INFO L82 PathProgramCache]: Analyzing trace with hash -584748275, now seen corresponding path program 10 times [2018-01-31 09:29:37,233 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:29:37,233 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:29:37,233 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:37,233 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:29:37,233 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:37,244 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:29:37,699 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 09:29:37,700 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:29:37,700 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 09:29:37,704 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:29:37,754 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:29:37,757 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:29:37,800 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 09:29:37,818 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:29:37,818 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2018-01-31 09:29:37,818 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-31 09:29:37,819 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-31 09:29:37,819 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-01-31 09:29:37,819 INFO L87 Difference]: Start difference. First operand 205 states and 209 transitions. Second operand 25 states. [2018-01-31 09:29:38,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:29:38,103 INFO L93 Difference]: Finished difference Result 329 states and 337 transitions. [2018-01-31 09:29:38,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-31 09:29:38,114 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 304 [2018-01-31 09:29:38,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:29:38,115 INFO L225 Difference]: With dead ends: 329 [2018-01-31 09:29:38,115 INFO L226 Difference]: Without dead ends: 218 [2018-01-31 09:29:38,115 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 09:29:38,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-01-31 09:29:38,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 213. [2018-01-31 09:29:38,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-01-31 09:29:38,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 217 transitions. [2018-01-31 09:29:38,119 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 217 transitions. Word has length 304 [2018-01-31 09:29:38,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:29:38,119 INFO L432 AbstractCegarLoop]: Abstraction has 213 states and 217 transitions. [2018-01-31 09:29:38,119 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-31 09:29:38,120 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 217 transitions. [2018-01-31 09:29:38,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-01-31 09:29:38,121 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:29:38,121 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 09:29:38,121 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolation]=== [2018-01-31 09:29:38,121 INFO L82 PathProgramCache]: Analyzing trace with hash -254219402, now seen corresponding path program 11 times [2018-01-31 09:29:38,121 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:29:38,121 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:29:38,122 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:38,122 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:29:38,122 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:38,135 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:29:38,728 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 09:29:38,728 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:29:38,729 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 09:29:38,733 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:29:38,742 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:38,746 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:38,747 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:38,749 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:38,751 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:38,754 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:38,759 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:38,764 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:38,774 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:38,811 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:38,812 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:29:38,815 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:29:38,979 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 09:29:38,996 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:29:38,996 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13] total 36 [2018-01-31 09:29:38,996 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-31 09:29:38,997 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-31 09:29:38,997 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1045, Unknown=0, NotChecked=0, Total=1260 [2018-01-31 09:29:38,997 INFO L87 Difference]: Start difference. First operand 213 states and 217 transitions. Second operand 36 states. [2018-01-31 09:29:39,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:29:39,697 INFO L93 Difference]: Finished difference Result 350 states and 362 transitions. [2018-01-31 09:29:39,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-01-31 09:29:39,711 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 312 [2018-01-31 09:29:39,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:29:39,711 INFO L225 Difference]: With dead ends: 350 [2018-01-31 09:29:39,711 INFO L226 Difference]: Without dead ends: 239 [2018-01-31 09:29:39,713 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=895, Invalid=3661, Unknown=0, NotChecked=0, Total=4556 [2018-01-31 09:29:39,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-01-31 09:29:39,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 229. [2018-01-31 09:29:39,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-01-31 09:29:39,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2018-01-31 09:29:39,717 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 312 [2018-01-31 09:29:39,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:29:39,717 INFO L432 AbstractCegarLoop]: Abstraction has 229 states and 233 transitions. [2018-01-31 09:29:39,717 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-31 09:29:39,717 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 233 transitions. [2018-01-31 09:29:39,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-01-31 09:29:39,718 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:29:39,718 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 09:29:39,719 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolation]=== [2018-01-31 09:29:39,719 INFO L82 PathProgramCache]: Analyzing trace with hash 87027560, now seen corresponding path program 12 times [2018-01-31 09:29:39,719 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:29:39,719 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:29:39,719 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:39,719 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:29:39,719 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:39,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:39,747 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:29:40,513 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 09:29:40,514 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:29:40,514 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 09:29:40,519 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:29:40,531 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:40,544 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:40,556 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:40,568 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:40,581 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:40,607 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:40,623 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:40,681 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:40,717 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:40,851 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:40,918 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:40,919 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:29:40,923 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:29:42,076 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 09:29:42,093 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:29:42,093 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 11] total 36 [2018-01-31 09:29:42,094 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-31 09:29:42,094 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-31 09:29:42,094 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1031, Unknown=0, NotChecked=0, Total=1260 [2018-01-31 09:29:42,095 INFO L87 Difference]: Start difference. First operand 229 states and 233 transitions. Second operand 36 states. [2018-01-31 09:29:43,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:29:43,107 INFO L93 Difference]: Finished difference Result 374 states and 383 transitions. [2018-01-31 09:29:43,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-01-31 09:29:43,117 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 344 [2018-01-31 09:29:43,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:29:43,118 INFO L225 Difference]: With dead ends: 374 [2018-01-31 09:29:43,118 INFO L226 Difference]: Without dead ends: 255 [2018-01-31 09:29:43,120 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=965, Invalid=3591, Unknown=0, NotChecked=0, Total=4556 [2018-01-31 09:29:43,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-01-31 09:29:43,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 245. [2018-01-31 09:29:43,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-01-31 09:29:43,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 249 transitions. [2018-01-31 09:29:43,123 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 249 transitions. Word has length 344 [2018-01-31 09:29:43,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:29:43,123 INFO L432 AbstractCegarLoop]: Abstraction has 245 states and 249 transitions. [2018-01-31 09:29:43,123 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-31 09:29:43,123 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 249 transitions. [2018-01-31 09:29:43,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-01-31 09:29:43,124 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:29:43,124 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 09:29:43,124 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolation]=== [2018-01-31 09:29:43,124 INFO L82 PathProgramCache]: Analyzing trace with hash -32347320, now seen corresponding path program 13 times [2018-01-31 09:29:43,125 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:29:43,125 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:29:43,125 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:43,125 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:29:43,125 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:43,136 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:29:43,918 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 09:29:43,918 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:29:43,918 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 09:29:43,923 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:29:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:43,961 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:29:44,038 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 09:29:44,055 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:29:44,055 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2018-01-31 09:29:44,056 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-31 09:29:44,056 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-31 09:29:44,056 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-31 09:29:44,056 INFO L87 Difference]: Start difference. First operand 245 states and 249 transitions. Second operand 31 states. [2018-01-31 09:29:44,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:29:44,357 INFO L93 Difference]: Finished difference Result 385 states and 393 transitions. [2018-01-31 09:29:44,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-31 09:29:44,367 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 360 [2018-01-31 09:29:44,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:29:44,368 INFO L225 Difference]: With dead ends: 385 [2018-01-31 09:29:44,368 INFO L226 Difference]: Without dead ends: 258 [2018-01-31 09:29:44,369 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2018-01-31 09:29:44,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-01-31 09:29:44,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 253. [2018-01-31 09:29:44,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-01-31 09:29:44,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 257 transitions. [2018-01-31 09:29:44,372 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 257 transitions. Word has length 360 [2018-01-31 09:29:44,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:29:44,372 INFO L432 AbstractCegarLoop]: Abstraction has 253 states and 257 transitions. [2018-01-31 09:29:44,372 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-31 09:29:44,372 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 257 transitions. [2018-01-31 09:29:44,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-01-31 09:29:44,373 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:29:44,374 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 09:29:44,374 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolation]=== [2018-01-31 09:29:44,377 INFO L82 PathProgramCache]: Analyzing trace with hash 716543153, now seen corresponding path program 14 times [2018-01-31 09:29:44,377 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:29:44,377 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:29:44,378 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:44,378 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:29:44,378 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:44,405 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:29:44,868 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 09:29:44,869 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:29:44,869 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 09:29:44,873 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:29:44,885 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:44,908 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:44,912 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:29:44,915 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:29:44,982 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 09:29:45,002 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:29:45,002 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2018-01-31 09:29:45,003 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-31 09:29:45,003 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-31 09:29:45,003 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 09:29:45,003 INFO L87 Difference]: Start difference. First operand 253 states and 257 transitions. Second operand 33 states. [2018-01-31 09:29:45,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:29:45,301 INFO L93 Difference]: Finished difference Result 393 states and 401 transitions. [2018-01-31 09:29:45,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-31 09:29:45,301 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 368 [2018-01-31 09:29:45,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:29:45,302 INFO L225 Difference]: With dead ends: 393 [2018-01-31 09:29:45,302 INFO L226 Difference]: Without dead ends: 266 [2018-01-31 09:29:45,303 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 367 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 09:29:45,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-01-31 09:29:45,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 261. [2018-01-31 09:29:45,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-01-31 09:29:45,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 265 transitions. [2018-01-31 09:29:45,306 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 265 transitions. Word has length 368 [2018-01-31 09:29:45,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:29:45,306 INFO L432 AbstractCegarLoop]: Abstraction has 261 states and 265 transitions. [2018-01-31 09:29:45,306 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-31 09:29:45,306 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 265 transitions. [2018-01-31 09:29:45,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-01-31 09:29:45,307 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:29:45,307 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 09:29:45,307 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolation]=== [2018-01-31 09:29:45,308 INFO L82 PathProgramCache]: Analyzing trace with hash -902740710, now seen corresponding path program 15 times [2018-01-31 09:29:45,308 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:29:45,308 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:29:45,308 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:45,308 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:29:45,308 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:45,319 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:29:45,986 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 09:29:45,987 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:29:45,987 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 09:29:45,998 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:29:46,010 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:29:46,021 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:29:46,028 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:29:46,035 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:29:46,044 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:29:46,098 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:29:46,146 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:29:46,147 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:29:46,150 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:29:46,364 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 09:29:46,381 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:29:46,381 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 15] total 46 [2018-01-31 09:29:46,382 INFO L409 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-01-31 09:29:46,382 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-01-31 09:29:46,382 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1720, Unknown=0, NotChecked=0, Total=2070 [2018-01-31 09:29:46,382 INFO L87 Difference]: Start difference. First operand 261 states and 265 transitions. Second operand 46 states. [2018-01-31 09:29:47,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:29:47,171 INFO L93 Difference]: Finished difference Result 414 states and 426 transitions. [2018-01-31 09:29:47,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-01-31 09:29:47,172 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 376 [2018-01-31 09:29:47,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:29:47,173 INFO L225 Difference]: With dead ends: 414 [2018-01-31 09:29:47,173 INFO L226 Difference]: Without dead ends: 287 [2018-01-31 09:29:47,174 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1478 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1520, Invalid=6136, Unknown=0, NotChecked=0, Total=7656 [2018-01-31 09:29:47,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-01-31 09:29:47,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 277. [2018-01-31 09:29:47,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-01-31 09:29:47,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 281 transitions. [2018-01-31 09:29:47,185 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 281 transitions. Word has length 376 [2018-01-31 09:29:47,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:29:47,186 INFO L432 AbstractCegarLoop]: Abstraction has 277 states and 281 transitions. [2018-01-31 09:29:47,186 INFO L433 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-01-31 09:29:47,186 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 281 transitions. [2018-01-31 09:29:47,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-01-31 09:29:47,187 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:29:47,187 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 09:29:47,187 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolation]=== [2018-01-31 09:29:47,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1876280076, now seen corresponding path program 16 times [2018-01-31 09:29:47,187 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:29:47,187 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:29:47,188 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:47,188 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:29:47,188 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:47,201 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:29:47,864 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 09:29:47,864 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:29:47,864 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 09:29:47,868 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:29:47,983 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:29:47,987 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:29:48,117 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 09:29:48,136 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:29:48,136 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2018-01-31 09:29:48,136 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-31 09:29:48,137 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-31 09:29:48,137 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 09:29:48,137 INFO L87 Difference]: Start difference. First operand 277 states and 281 transitions. Second operand 37 states. [2018-01-31 09:29:48,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:29:48,628 INFO L93 Difference]: Finished difference Result 425 states and 433 transitions. [2018-01-31 09:29:48,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-01-31 09:29:48,628 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 408 [2018-01-31 09:29:48,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:29:48,629 INFO L225 Difference]: With dead ends: 425 [2018-01-31 09:29:48,629 INFO L226 Difference]: Without dead ends: 290 [2018-01-31 09:29:48,630 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2018-01-31 09:29:48,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-01-31 09:29:48,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 285. [2018-01-31 09:29:48,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-01-31 09:29:48,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 289 transitions. [2018-01-31 09:29:48,634 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 289 transitions. Word has length 408 [2018-01-31 09:29:48,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:29:48,634 INFO L432 AbstractCegarLoop]: Abstraction has 285 states and 289 transitions. [2018-01-31 09:29:48,634 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-31 09:29:48,634 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 289 transitions. [2018-01-31 09:29:48,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-01-31 09:29:48,636 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:29:48,636 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 09:29:48,636 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolation]=== [2018-01-31 09:29:48,636 INFO L82 PathProgramCache]: Analyzing trace with hash -2087512459, now seen corresponding path program 17 times [2018-01-31 09:29:48,636 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:29:48,636 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:29:48,637 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:48,637 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:29:48,637 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:48,648 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:29:49,694 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 09:29:49,695 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:29:49,695 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 09:29:49,699 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:29:49,709 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:49,718 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:49,727 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:49,737 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:49,746 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:49,748 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:49,750 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:49,753 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:49,759 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:49,765 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:49,772 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:49,783 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:49,801 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:49,875 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:49,932 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:50,209 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:50,211 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:29:50,215 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:29:50,699 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 09:29:50,717 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:29:50,717 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 17] total 52 [2018-01-31 09:29:50,717 INFO L409 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-01-31 09:29:50,718 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-01-31 09:29:50,718 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=2213, Unknown=0, NotChecked=0, Total=2652 [2018-01-31 09:29:50,718 INFO L87 Difference]: Start difference. First operand 285 states and 289 transitions. Second operand 52 states. [2018-01-31 09:29:51,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:29:51,641 INFO L93 Difference]: Finished difference Result 446 states and 458 transitions. [2018-01-31 09:29:51,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-01-31 09:29:51,642 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 416 [2018-01-31 09:29:51,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:29:51,643 INFO L225 Difference]: With dead ends: 446 [2018-01-31 09:29:51,643 INFO L226 Difference]: Without dead ends: 311 [2018-01-31 09:29:51,645 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1937 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1935, Invalid=7965, Unknown=0, NotChecked=0, Total=9900 [2018-01-31 09:29:51,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-01-31 09:29:51,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 301. [2018-01-31 09:29:51,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-01-31 09:29:51,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 305 transitions. [2018-01-31 09:29:51,648 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 305 transitions. Word has length 416 [2018-01-31 09:29:51,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:29:51,648 INFO L432 AbstractCegarLoop]: Abstraction has 301 states and 305 transitions. [2018-01-31 09:29:51,648 INFO L433 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-01-31 09:29:51,648 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 305 transitions. [2018-01-31 09:29:51,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-01-31 09:29:51,650 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:29:51,650 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 09:29:51,650 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolation]=== [2018-01-31 09:29:51,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1829366169, now seen corresponding path program 18 times [2018-01-31 09:29:51,650 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:29:51,650 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:29:51,651 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:51,651 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:29:51,651 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:51,662 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:29:52,384 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 09:29:52,384 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:29:52,384 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 09:29:52,389 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:29:52,402 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:52,411 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:52,414 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:52,417 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:52,423 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:52,435 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:52,444 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:52,483 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:52,493 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:52,530 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:52,568 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:52,611 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:52,763 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:29:52,765 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:29:52,768 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:29:53,101 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 09:29:53,118 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:29:53,118 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 13] total 50 [2018-01-31 09:29:53,119 INFO L409 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-01-31 09:29:53,119 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-01-31 09:29:53,119 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=446, Invalid=2004, Unknown=0, NotChecked=0, Total=2450 [2018-01-31 09:29:53,119 INFO L87 Difference]: Start difference. First operand 301 states and 305 transitions. Second operand 50 states. [2018-01-31 09:29:53,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:29:53,837 INFO L93 Difference]: Finished difference Result 470 states and 479 transitions. [2018-01-31 09:29:53,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-01-31 09:29:53,838 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 448 [2018-01-31 09:29:53,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:29:53,839 INFO L225 Difference]: With dead ends: 470 [2018-01-31 09:29:53,839 INFO L226 Difference]: Without dead ends: 327 [2018-01-31 09:29:53,840 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1746 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1980, Invalid=7140, Unknown=0, NotChecked=0, Total=9120 [2018-01-31 09:29:53,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-01-31 09:29:53,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 317. [2018-01-31 09:29:53,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-01-31 09:29:53,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 321 transitions. [2018-01-31 09:29:53,844 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 321 transitions. Word has length 448 [2018-01-31 09:29:53,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:29:53,844 INFO L432 AbstractCegarLoop]: Abstraction has 317 states and 321 transitions. [2018-01-31 09:29:53,844 INFO L433 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-01-31 09:29:53,844 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 321 transitions. [2018-01-31 09:29:53,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2018-01-31 09:29:53,846 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:29:53,846 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 09:29:53,846 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr0AssertViolation]=== [2018-01-31 09:29:53,846 INFO L82 PathProgramCache]: Analyzing trace with hash 8692295, now seen corresponding path program 19 times [2018-01-31 09:29:53,846 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:29:53,846 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:29:53,847 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:53,847 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:29:53,847 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:53,860 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:29:54,656 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 09:29:54,656 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:29:54,656 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 09:29:54,661 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:29:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:54,747 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:29:55,054 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 09:29:55,072 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:29:55,072 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2018-01-31 09:29:55,073 INFO L409 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-01-31 09:29:55,073 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-01-31 09:29:55,073 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2018-01-31 09:29:55,073 INFO L87 Difference]: Start difference. First operand 317 states and 321 transitions. Second operand 43 states. [2018-01-31 09:29:55,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:29:55,541 INFO L93 Difference]: Finished difference Result 476 states and 484 transitions. [2018-01-31 09:29:55,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-01-31 09:29:55,541 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 464 [2018-01-31 09:29:55,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:29:55,542 INFO L225 Difference]: With dead ends: 476 [2018-01-31 09:29:55,542 INFO L226 Difference]: Without dead ends: 325 [2018-01-31 09:29:55,543 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2018-01-31 09:29:55,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-01-31 09:29:55,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2018-01-31 09:29:55,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-01-31 09:29:55,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 329 transitions. [2018-01-31 09:29:55,546 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 329 transitions. Word has length 464 [2018-01-31 09:29:55,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:29:55,546 INFO L432 AbstractCegarLoop]: Abstraction has 325 states and 329 transitions. [2018-01-31 09:29:55,547 INFO L433 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-01-31 09:29:55,547 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 329 transitions. [2018-01-31 09:29:55,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2018-01-31 09:29:55,548 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:29:55,548 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 09:29:55,548 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr0AssertViolation]=== [2018-01-31 09:29:55,548 INFO L82 PathProgramCache]: Analyzing trace with hash 568633008, now seen corresponding path program 20 times [2018-01-31 09:29:55,549 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:29:55,549 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:29:55,549 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:55,549 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:29:55,549 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:55,562 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:29:55,923 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 09:29:55,924 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:29:55,924 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 09:29:55,934 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:29:55,946 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:55,972 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:55,978 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:29:55,980 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:29:56,065 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 09:29:56,082 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:29:56,082 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-31 09:29:56,082 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 09:29:56,082 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 09:29:56,082 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-31 09:29:56,083 INFO L87 Difference]: Start difference. First operand 325 states and 329 transitions. Second operand 21 states. [2018-01-31 09:29:56,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:29:56,232 INFO L93 Difference]: Finished difference Result 488 states and 498 transitions. [2018-01-31 09:29:56,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-31 09:29:56,232 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 472 [2018-01-31 09:29:56,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:29:56,233 INFO L225 Difference]: With dead ends: 488 [2018-01-31 09:29:56,233 INFO L226 Difference]: Without dead ends: 338 [2018-01-31 09:29:56,234 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 471 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 09:29:56,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-01-31 09:29:56,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 333. [2018-01-31 09:29:56,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-01-31 09:29:56,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 337 transitions. [2018-01-31 09:29:56,237 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 337 transitions. Word has length 472 [2018-01-31 09:29:56,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:29:56,237 INFO L432 AbstractCegarLoop]: Abstraction has 333 states and 337 transitions. [2018-01-31 09:29:56,237 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 09:29:56,237 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 337 transitions. [2018-01-31 09:29:56,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2018-01-31 09:29:56,239 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:29:56,239 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 09:29:56,239 INFO L371 AbstractCegarLoop]: === Iteration 25 === [mainErr0AssertViolation]=== [2018-01-31 09:29:56,239 INFO L82 PathProgramCache]: Analyzing trace with hash 568386617, now seen corresponding path program 21 times [2018-01-31 09:29:56,239 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:29:56,239 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:29:56,240 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:56,240 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:29:56,240 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:56,252 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:29:56,678 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 09:29:56,679 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:29:56,679 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 09:29:56,684 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:29:56,697 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:29:56,701 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:29:56,707 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:29:56,714 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:29:56,727 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:29:56,748 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:29:56,772 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:29:56,818 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:29:56,819 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:29:56,822 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:29:57,015 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 09:29:57,033 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:29:57,033 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15] total 34 [2018-01-31 09:29:57,033 INFO L409 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-01-31 09:29:57,034 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-01-31 09:29:57,034 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=940, Unknown=0, NotChecked=0, Total=1122 [2018-01-31 09:29:57,034 INFO L87 Difference]: Start difference. First operand 333 states and 337 transitions. Second operand 34 states. [2018-01-31 09:29:57,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:29:57,405 INFO L93 Difference]: Finished difference Result 517 states and 528 transitions. [2018-01-31 09:29:57,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-01-31 09:29:57,405 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 496 [2018-01-31 09:29:57,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:29:57,406 INFO L225 Difference]: With dead ends: 517 [2018-01-31 09:29:57,406 INFO L226 Difference]: Without dead ends: 359 [2018-01-31 09:29:57,407 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 484 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=740, Invalid=3292, Unknown=0, NotChecked=0, Total=4032 [2018-01-31 09:29:57,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-01-31 09:29:57,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 349. [2018-01-31 09:29:57,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-01-31 09:29:57,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 353 transitions. [2018-01-31 09:29:57,410 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 353 transitions. Word has length 496 [2018-01-31 09:29:57,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:29:57,410 INFO L432 AbstractCegarLoop]: Abstraction has 349 states and 353 transitions. [2018-01-31 09:29:57,414 INFO L433 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-01-31 09:29:57,414 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 353 transitions. [2018-01-31 09:29:57,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2018-01-31 09:29:57,416 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:29:57,416 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 09:29:57,416 INFO L371 AbstractCegarLoop]: === Iteration 26 === [mainErr0AssertViolation]=== [2018-01-31 09:29:57,416 INFO L82 PathProgramCache]: Analyzing trace with hash 511311417, now seen corresponding path program 22 times [2018-01-31 09:29:57,416 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:29:57,416 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:29:57,417 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:57,417 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:29:57,417 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:57,434 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:29:58,215 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 09:29:58,215 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:29:58,215 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 09:29:58,233 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:29:58,580 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:29:58,585 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:29:58,748 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 09:29:58,767 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:29:58,768 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2018-01-31 09:29:58,768 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-31 09:29:58,768 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-31 09:29:58,768 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-01-31 09:29:58,768 INFO L87 Difference]: Start difference. First operand 349 states and 353 transitions. Second operand 25 states. [2018-01-31 09:29:58,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:29:58,974 INFO L93 Difference]: Finished difference Result 536 states and 546 transitions. [2018-01-31 09:29:58,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-31 09:29:58,974 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 528 [2018-01-31 09:29:58,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:29:58,975 INFO L225 Difference]: With dead ends: 536 [2018-01-31 09:29:58,975 INFO L226 Difference]: Without dead ends: 362 [2018-01-31 09:29:58,976 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2018-01-31 09:29:58,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2018-01-31 09:29:58,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 357. [2018-01-31 09:29:58,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-01-31 09:29:58,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 361 transitions. [2018-01-31 09:29:58,979 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 361 transitions. Word has length 528 [2018-01-31 09:29:58,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:29:58,979 INFO L432 AbstractCegarLoop]: Abstraction has 357 states and 361 transitions. [2018-01-31 09:29:58,979 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-31 09:29:58,980 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 361 transitions. [2018-01-31 09:29:58,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2018-01-31 09:29:58,982 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:29:58,982 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 09:29:58,982 INFO L371 AbstractCegarLoop]: === Iteration 27 === [mainErr0AssertViolation]=== [2018-01-31 09:29:58,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1281482434, now seen corresponding path program 23 times [2018-01-31 09:29:58,982 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:29:58,982 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:29:58,983 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:58,983 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:29:58,983 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:29:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:29:58,996 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:29:59,627 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 09:29:59,627 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:29:59,627 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 09:29:59,632 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:29:59,644 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:59,645 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:59,646 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:59,647 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:59,649 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:59,651 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:59,653 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:59,656 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:59,661 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:59,667 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:59,674 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:59,687 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:59,694 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:59,706 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:59,754 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:29:59,832 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:00,029 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:00,302 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:00,749 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:00,751 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:30:00,755 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:30:01,004 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 09:30:01,024 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:30:01,024 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2018-01-31 09:30:01,024 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-31 09:30:01,025 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-31 09:30:01,025 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2018-01-31 09:30:01,025 INFO L87 Difference]: Start difference. First operand 357 states and 361 transitions. Second operand 27 states. [2018-01-31 09:30:01,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:30:01,619 INFO L93 Difference]: Finished difference Result 552 states and 562 transitions. [2018-01-31 09:30:01,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-31 09:30:01,619 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 552 [2018-01-31 09:30:01,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:30:01,620 INFO L225 Difference]: With dead ends: 552 [2018-01-31 09:30:01,620 INFO L226 Difference]: Without dead ends: 370 [2018-01-31 09:30:01,621 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2018-01-31 09:30:01,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2018-01-31 09:30:01,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 365. [2018-01-31 09:30:01,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-01-31 09:30:01,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 369 transitions. [2018-01-31 09:30:01,624 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 369 transitions. Word has length 552 [2018-01-31 09:30:01,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:30:01,624 INFO L432 AbstractCegarLoop]: Abstraction has 365 states and 369 transitions. [2018-01-31 09:30:01,624 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-31 09:30:01,624 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 369 transitions. [2018-01-31 09:30:01,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2018-01-31 09:30:01,626 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:30:01,626 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 09:30:01,626 INFO L371 AbstractCegarLoop]: === Iteration 28 === [mainErr0AssertViolation]=== [2018-01-31 09:30:01,626 INFO L82 PathProgramCache]: Analyzing trace with hash 412841035, now seen corresponding path program 24 times [2018-01-31 09:30:01,627 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:30:01,627 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:30:01,627 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:01,627 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:30:01,627 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:30:01,641 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:30:02,292 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 09:30:02,292 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:30:02,292 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 09:30:02,297 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:30:02,312 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:02,319 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:02,322 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:02,325 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:02,331 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:02,348 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:02,357 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:02,376 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:02,390 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:02,461 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:02,529 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:02,585 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:02,679 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:03,022 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:03,122 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:03,681 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:04,064 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:04,067 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:30:04,074 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:30:04,355 INFO L134 CoverageAnalysis]: Checked inductivity of 7028 backedges. 2574 proven. 182 refuted. 0 times theorem prover too weak. 4272 trivial. 0 not checked. [2018-01-31 09:30:04,373 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:30:04,374 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 20] total 45 [2018-01-31 09:30:04,374 INFO L409 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-01-31 09:30:04,374 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-01-31 09:30:04,374 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1699, Unknown=0, NotChecked=0, Total=1980 [2018-01-31 09:30:04,374 INFO L87 Difference]: Start difference. First operand 365 states and 369 transitions. Second operand 45 states. [2018-01-31 09:30:05,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:30:05,228 INFO L93 Difference]: Finished difference Result 581 states and 592 transitions. [2018-01-31 09:30:05,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-01-31 09:30:05,228 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 576 [2018-01-31 09:30:05,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:30:05,229 INFO L225 Difference]: With dead ends: 581 [2018-01-31 09:30:05,229 INFO L226 Difference]: Without dead ends: 391 [2018-01-31 09:30:05,230 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 559 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1752 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1342, Invalid=7214, Unknown=0, NotChecked=0, Total=8556 [2018-01-31 09:30:05,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-01-31 09:30:05,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 381. [2018-01-31 09:30:05,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-01-31 09:30:05,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 385 transitions. [2018-01-31 09:30:05,234 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 385 transitions. Word has length 576 [2018-01-31 09:30:05,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:30:05,234 INFO L432 AbstractCegarLoop]: Abstraction has 381 states and 385 transitions. [2018-01-31 09:30:05,234 INFO L433 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-01-31 09:30:05,234 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 385 transitions. [2018-01-31 09:30:05,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2018-01-31 09:30:05,236 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:30:05,237 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 09:30:05,237 INFO L371 AbstractCegarLoop]: === Iteration 29 === [mainErr0AssertViolation]=== [2018-01-31 09:30:05,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1048455755, now seen corresponding path program 25 times [2018-01-31 09:30:05,237 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:30:05,237 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:30:05,237 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:05,238 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:30:05,238 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:30:05,252 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:30:05,930 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 09:30:05,930 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:30:05,930 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 09:30:05,935 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:30:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:30:05,990 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:30:06,123 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 09:30:06,143 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:30:06,143 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2018-01-31 09:30:06,144 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-31 09:30:06,144 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-31 09:30:06,144 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-31 09:30:06,144 INFO L87 Difference]: Start difference. First operand 381 states and 385 transitions. Second operand 31 states. [2018-01-31 09:30:06,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:30:06,408 INFO L93 Difference]: Finished difference Result 600 states and 610 transitions. [2018-01-31 09:30:06,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-31 09:30:06,408 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 608 [2018-01-31 09:30:06,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:30:06,409 INFO L225 Difference]: With dead ends: 600 [2018-01-31 09:30:06,409 INFO L226 Difference]: Without dead ends: 394 [2018-01-31 09:30:06,410 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 09:30:06,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2018-01-31 09:30:06,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 389. [2018-01-31 09:30:06,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-01-31 09:30:06,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 393 transitions. [2018-01-31 09:30:06,419 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 393 transitions. Word has length 608 [2018-01-31 09:30:06,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:30:06,420 INFO L432 AbstractCegarLoop]: Abstraction has 389 states and 393 transitions. [2018-01-31 09:30:06,420 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-31 09:30:06,420 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 393 transitions. [2018-01-31 09:30:06,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2018-01-31 09:30:06,422 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:30:06,422 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 09:30:06,422 INFO L371 AbstractCegarLoop]: === Iteration 30 === [mainErr0AssertViolation]=== [2018-01-31 09:30:06,423 INFO L82 PathProgramCache]: Analyzing trace with hash -133864748, now seen corresponding path program 26 times [2018-01-31 09:30:06,423 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:30:06,423 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:30:06,423 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:06,423 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:30:06,423 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:30:06,438 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:30:07,184 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 09:30:07,184 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:30:07,184 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 09:30:07,191 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:30:07,207 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:07,245 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:07,252 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:30:07,256 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:30:07,377 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 09:30:07,394 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:30:07,395 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2018-01-31 09:30:07,395 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-31 09:30:07,395 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-31 09:30:07,395 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 09:30:07,395 INFO L87 Difference]: Start difference. First operand 389 states and 393 transitions. Second operand 33 states. [2018-01-31 09:30:07,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:30:07,719 INFO L93 Difference]: Finished difference Result 616 states and 626 transitions. [2018-01-31 09:30:07,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-31 09:30:07,719 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 632 [2018-01-31 09:30:07,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:30:07,720 INFO L225 Difference]: With dead ends: 616 [2018-01-31 09:30:07,720 INFO L226 Difference]: Without dead ends: 402 [2018-01-31 09:30:07,721 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 09:30:07,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2018-01-31 09:30:07,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 397. [2018-01-31 09:30:07,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-01-31 09:30:07,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 401 transitions. [2018-01-31 09:30:07,725 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 401 transitions. Word has length 632 [2018-01-31 09:30:07,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:30:07,725 INFO L432 AbstractCegarLoop]: Abstraction has 397 states and 401 transitions. [2018-01-31 09:30:07,725 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-31 09:30:07,725 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 401 transitions. [2018-01-31 09:30:07,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2018-01-31 09:30:07,728 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:30:07,728 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 09:30:07,728 INFO L371 AbstractCegarLoop]: === Iteration 31 === [mainErr0AssertViolation]=== [2018-01-31 09:30:07,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1687793571, now seen corresponding path program 27 times [2018-01-31 09:30:07,728 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:30:07,728 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:30:07,729 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:07,729 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:30:07,729 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:30:07,743 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:30:08,579 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 09:30:08,580 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:30:08,580 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:30:08,585 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:30:08,599 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:08,608 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:08,613 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:08,621 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:08,633 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:08,646 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:08,661 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:08,700 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:08,760 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:08,780 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:08,782 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:30:08,786 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:30:09,152 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 09:30:09,177 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:30:09,178 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 22] total 53 [2018-01-31 09:30:09,178 INFO L409 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-01-31 09:30:09,178 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-01-31 09:30:09,178 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=2363, Unknown=0, NotChecked=0, Total=2756 [2018-01-31 09:30:09,178 INFO L87 Difference]: Start difference. First operand 397 states and 401 transitions. Second operand 53 states. [2018-01-31 09:30:12,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:30:12,930 INFO L93 Difference]: Finished difference Result 645 states and 656 transitions. [2018-01-31 09:30:12,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-01-31 09:30:12,930 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 656 [2018-01-31 09:30:12,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:30:12,931 INFO L225 Difference]: With dead ends: 645 [2018-01-31 09:30:12,931 INFO L226 Difference]: Without dead ends: 423 [2018-01-31 09:30:12,933 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2487 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1901, Invalid=10089, Unknown=0, NotChecked=0, Total=11990 [2018-01-31 09:30:12,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-01-31 09:30:12,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 413. [2018-01-31 09:30:12,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-01-31 09:30:12,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 417 transitions. [2018-01-31 09:30:12,947 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 417 transitions. Word has length 656 [2018-01-31 09:30:12,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:30:12,948 INFO L432 AbstractCegarLoop]: Abstraction has 413 states and 417 transitions. [2018-01-31 09:30:12,948 INFO L433 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-01-31 09:30:12,948 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 417 transitions. [2018-01-31 09:30:12,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2018-01-31 09:30:12,950 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:30:12,951 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 09:30:12,951 INFO L371 AbstractCegarLoop]: === Iteration 32 === [mainErr0AssertViolation]=== [2018-01-31 09:30:12,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1645305251, now seen corresponding path program 28 times [2018-01-31 09:30:12,951 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:30:12,951 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:30:12,951 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:12,951 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:30:12,952 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:30:12,967 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:30:14,094 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 09:30:14,094 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:30:14,094 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:30:14,099 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:30:14,698 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:30:14,704 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:30:14,877 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 09:30:14,898 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:30:14,898 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2018-01-31 09:30:14,899 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-31 09:30:14,899 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-31 09:30:14,899 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 09:30:14,899 INFO L87 Difference]: Start difference. First operand 413 states and 417 transitions. Second operand 37 states. [2018-01-31 09:30:15,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:30:15,272 INFO L93 Difference]: Finished difference Result 664 states and 674 transitions. [2018-01-31 09:30:15,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-01-31 09:30:15,272 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 688 [2018-01-31 09:30:15,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:30:15,273 INFO L225 Difference]: With dead ends: 664 [2018-01-31 09:30:15,273 INFO L226 Difference]: Without dead ends: 426 [2018-01-31 09:30:15,274 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 687 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2018-01-31 09:30:15,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2018-01-31 09:30:15,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 421. [2018-01-31 09:30:15,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-01-31 09:30:15,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 425 transitions. [2018-01-31 09:30:15,278 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 425 transitions. Word has length 688 [2018-01-31 09:30:15,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:30:15,278 INFO L432 AbstractCegarLoop]: Abstraction has 421 states and 425 transitions. [2018-01-31 09:30:15,278 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-31 09:30:15,278 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 425 transitions. [2018-01-31 09:30:15,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 713 [2018-01-31 09:30:15,281 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:30:15,281 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 09:30:15,281 INFO L371 AbstractCegarLoop]: === Iteration 33 === [mainErr0AssertViolation]=== [2018-01-31 09:30:15,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1979763994, now seen corresponding path program 29 times [2018-01-31 09:30:15,281 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:30:15,281 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:30:15,282 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:15,282 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:30:15,282 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:30:15,297 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:30:16,331 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 09:30:16,331 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:30:16,331 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 09:30:16,336 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:30:16,352 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:16,353 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:16,355 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:16,359 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:16,362 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:16,367 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:16,372 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:16,376 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:16,383 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:16,391 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:16,400 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:16,408 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:16,450 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:16,597 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:16,762 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:16,974 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:17,501 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:18,278 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:19,310 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:19,313 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:30:19,320 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:30:19,467 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 09:30:19,486 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:30:19,486 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2018-01-31 09:30:19,487 INFO L409 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-01-31 09:30:19,487 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-01-31 09:30:19,487 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2018-01-31 09:30:19,487 INFO L87 Difference]: Start difference. First operand 421 states and 425 transitions. Second operand 39 states. [2018-01-31 09:30:19,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:30:19,884 INFO L93 Difference]: Finished difference Result 680 states and 690 transitions. [2018-01-31 09:30:19,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-01-31 09:30:19,884 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 712 [2018-01-31 09:30:19,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:30:19,885 INFO L225 Difference]: With dead ends: 680 [2018-01-31 09:30:19,885 INFO L226 Difference]: Without dead ends: 434 [2018-01-31 09:30:19,886 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 711 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2018-01-31 09:30:19,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-01-31 09:30:19,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 429. [2018-01-31 09:30:19,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2018-01-31 09:30:19,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 433 transitions. [2018-01-31 09:30:19,890 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 433 transitions. Word has length 712 [2018-01-31 09:30:19,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:30:19,890 INFO L432 AbstractCegarLoop]: Abstraction has 429 states and 433 transitions. [2018-01-31 09:30:19,890 INFO L433 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-01-31 09:30:19,890 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 433 transitions. [2018-01-31 09:30:19,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2018-01-31 09:30:19,893 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:30:19,893 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 09:30:19,893 INFO L371 AbstractCegarLoop]: === Iteration 34 === [mainErr0AssertViolation]=== [2018-01-31 09:30:19,893 INFO L82 PathProgramCache]: Analyzing trace with hash -311330705, now seen corresponding path program 30 times [2018-01-31 09:30:19,893 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:30:19,893 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:30:19,894 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:19,894 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:30:19,894 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:30:19,910 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:30:21,148 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 09:30:21,148 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:30:21,148 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 09:30:21,153 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:30:21,170 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:21,173 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:21,176 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:21,180 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:21,186 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:21,205 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:21,231 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:21,271 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:21,291 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:21,368 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:21,426 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:21,489 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:21,519 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:21,714 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:21,754 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:21,931 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:22,332 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:22,424 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:22,505 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:22,605 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:22,855 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:22,859 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:30:22,867 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:30:23,281 INFO L134 CoverageAnalysis]: Checked inductivity of 13668 backedges. 5502 proven. 306 refuted. 0 times theorem prover too weak. 7860 trivial. 0 not checked. [2018-01-31 09:30:23,302 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:30:23,302 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 24] total 61 [2018-01-31 09:30:23,303 INFO L409 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-01-31 09:30:23,303 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-01-31 09:30:23,303 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=525, Invalid=3135, Unknown=0, NotChecked=0, Total=3660 [2018-01-31 09:30:23,304 INFO L87 Difference]: Start difference. First operand 429 states and 433 transitions. Second operand 61 states. [2018-01-31 09:30:24,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:30:24,556 INFO L93 Difference]: Finished difference Result 709 states and 720 transitions. [2018-01-31 09:30:24,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-01-31 09:30:24,556 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 736 [2018-01-31 09:30:24,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:30:24,557 INFO L225 Difference]: With dead ends: 709 [2018-01-31 09:30:24,557 INFO L226 Difference]: Without dead ends: 455 [2018-01-31 09:30:24,558 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 715 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3348 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2564, Invalid=13438, Unknown=0, NotChecked=0, Total=16002 [2018-01-31 09:30:24,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2018-01-31 09:30:24,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 445. [2018-01-31 09:30:24,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2018-01-31 09:30:24,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 449 transitions. [2018-01-31 09:30:24,562 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 449 transitions. Word has length 736 [2018-01-31 09:30:24,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:30:24,562 INFO L432 AbstractCegarLoop]: Abstraction has 445 states and 449 transitions. [2018-01-31 09:30:24,562 INFO L433 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-01-31 09:30:24,562 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 449 transitions. [2018-01-31 09:30:24,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2018-01-31 09:30:24,565 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:30:24,565 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 09:30:24,565 INFO L371 AbstractCegarLoop]: === Iteration 35 === [mainErr0AssertViolation]=== [2018-01-31 09:30:24,565 INFO L82 PathProgramCache]: Analyzing trace with hash 335242863, now seen corresponding path program 31 times [2018-01-31 09:30:24,566 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:30:24,566 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:30:24,566 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:24,566 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:30:24,566 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:30:24,582 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:30:25,948 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 09:30:25,949 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:30:25,949 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 09:30:25,959 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:30:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:30:26,036 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:30:26,247 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 09:30:26,266 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:30:26,266 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2018-01-31 09:30:26,267 INFO L409 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-01-31 09:30:26,267 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-01-31 09:30:26,267 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2018-01-31 09:30:26,267 INFO L87 Difference]: Start difference. First operand 445 states and 449 transitions. Second operand 43 states. [2018-01-31 09:30:26,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:30:26,745 INFO L93 Difference]: Finished difference Result 723 states and 733 transitions. [2018-01-31 09:30:26,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-01-31 09:30:26,746 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 768 [2018-01-31 09:30:26,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:30:26,747 INFO L225 Difference]: With dead ends: 723 [2018-01-31 09:30:26,747 INFO L226 Difference]: Without dead ends: 453 [2018-01-31 09:30:26,747 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 846 GetRequests, 767 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2018-01-31 09:30:26,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2018-01-31 09:30:26,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 453. [2018-01-31 09:30:26,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2018-01-31 09:30:26,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 457 transitions. [2018-01-31 09:30:26,751 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 457 transitions. Word has length 768 [2018-01-31 09:30:26,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:30:26,751 INFO L432 AbstractCegarLoop]: Abstraction has 453 states and 457 transitions. [2018-01-31 09:30:26,752 INFO L433 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-01-31 09:30:26,752 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 457 transitions. [2018-01-31 09:30:26,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2018-01-31 09:30:26,755 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:30:26,755 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 09:30:26,755 INFO L371 AbstractCegarLoop]: === Iteration 36 === [mainErr0AssertViolation]=== [2018-01-31 09:30:26,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1216393480, now seen corresponding path program 32 times [2018-01-31 09:30:26,755 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:30:26,755 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:30:26,756 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:26,756 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:30:26,756 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:30:26,773 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:30:27,638 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 09:30:27,639 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:30:27,639 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 09:30:27,643 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:30:27,662 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:27,708 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:27,717 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:30:27,721 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:30:27,885 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 09:30:27,904 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:30:27,904 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2018-01-31 09:30:27,905 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-31 09:30:27,905 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-31 09:30:27,905 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-01-31 09:30:27,905 INFO L87 Difference]: Start difference. First operand 453 states and 457 transitions. Second operand 25 states. [2018-01-31 09:30:28,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:30:28,140 INFO L93 Difference]: Finished difference Result 644 states and 649 transitions. [2018-01-31 09:30:28,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-31 09:30:28,142 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 792 [2018-01-31 09:30:28,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:30:28,143 INFO L225 Difference]: With dead ends: 644 [2018-01-31 09:30:28,143 INFO L226 Difference]: Without dead ends: 466 [2018-01-31 09:30:28,144 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 791 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2018-01-31 09:30:28,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2018-01-31 09:30:28,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 461. [2018-01-31 09:30:28,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-01-31 09:30:28,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 465 transitions. [2018-01-31 09:30:28,149 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 465 transitions. Word has length 792 [2018-01-31 09:30:28,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:30:28,149 INFO L432 AbstractCegarLoop]: Abstraction has 461 states and 465 transitions. [2018-01-31 09:30:28,149 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-31 09:30:28,149 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 465 transitions. [2018-01-31 09:30:28,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2018-01-31 09:30:28,153 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:30:28,153 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 09:30:28,153 INFO L371 AbstractCegarLoop]: === Iteration 37 === [mainErr0AssertViolation]=== [2018-01-31 09:30:28,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1293096047, now seen corresponding path program 33 times [2018-01-31 09:30:28,154 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:30:28,154 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:30:28,154 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:28,154 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:30:28,154 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:30:28,172 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:30:29,172 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 09:30:29,173 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:30:29,173 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 09:30:29,177 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:30:29,197 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:29,200 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:29,205 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:29,214 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:29,229 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:29,241 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:29,268 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:29,307 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:29,356 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:29,479 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:29,594 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:29,894 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:29,987 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:29,990 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:30:29,996 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:30:30,197 INFO L134 CoverageAnalysis]: Checked inductivity of 16572 backedges. 6734 proven. 462 refuted. 0 times theorem prover too weak. 9376 trivial. 0 not checked. [2018-01-31 09:30:30,216 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:30:30,216 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 28] total 30 [2018-01-31 09:30:30,216 INFO L409 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-01-31 09:30:30,216 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-01-31 09:30:30,217 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2018-01-31 09:30:30,217 INFO L87 Difference]: Start difference. First operand 461 states and 465 transitions. Second operand 30 states. [2018-01-31 09:30:30,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:30:30,587 INFO L93 Difference]: Finished difference Result 652 states and 657 transitions. [2018-01-31 09:30:30,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-31 09:30:30,587 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 800 [2018-01-31 09:30:30,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:30:30,588 INFO L225 Difference]: With dead ends: 652 [2018-01-31 09:30:30,588 INFO L226 Difference]: Without dead ends: 474 [2018-01-31 09:30:30,589 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 860 GetRequests, 796 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1111, Invalid=3179, Unknown=0, NotChecked=0, Total=4290 [2018-01-31 09:30:30,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2018-01-31 09:30:30,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 469. [2018-01-31 09:30:30,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2018-01-31 09:30:30,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 473 transitions. [2018-01-31 09:30:30,592 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 473 transitions. Word has length 800 [2018-01-31 09:30:30,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:30:30,593 INFO L432 AbstractCegarLoop]: Abstraction has 469 states and 473 transitions. [2018-01-31 09:30:30,593 INFO L433 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-01-31 09:30:30,593 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 473 transitions. [2018-01-31 09:30:30,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2018-01-31 09:30:30,596 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:30:30,596 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 09:30:30,596 INFO L371 AbstractCegarLoop]: === Iteration 38 === [mainErr0AssertViolation]=== [2018-01-31 09:30:30,596 INFO L82 PathProgramCache]: Analyzing trace with hash 887190246, now seen corresponding path program 34 times [2018-01-31 09:30:30,597 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:30:30,597 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:30:30,597 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:30,597 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:30:30,597 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:30:30,614 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:30:31,641 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 09:30:31,641 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:30:31,641 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 09:30:31,648 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:30:32,520 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:30:32,526 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:30:32,696 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 09:30:32,716 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:30:32,716 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2018-01-31 09:30:32,716 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-31 09:30:32,716 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-31 09:30:32,717 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2018-01-31 09:30:32,717 INFO L87 Difference]: Start difference. First operand 469 states and 473 transitions. Second operand 29 states. [2018-01-31 09:30:32,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:30:32,935 INFO L93 Difference]: Finished difference Result 660 states and 665 transitions. [2018-01-31 09:30:32,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-01-31 09:30:32,935 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 808 [2018-01-31 09:30:32,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:30:32,937 INFO L225 Difference]: With dead ends: 660 [2018-01-31 09:30:32,937 INFO L226 Difference]: Without dead ends: 482 [2018-01-31 09:30:32,937 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 858 GetRequests, 807 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2018-01-31 09:30:32,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2018-01-31 09:30:32,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 477. [2018-01-31 09:30:32,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2018-01-31 09:30:32,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 481 transitions. [2018-01-31 09:30:32,941 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 481 transitions. Word has length 808 [2018-01-31 09:30:32,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:30:32,941 INFO L432 AbstractCegarLoop]: Abstraction has 477 states and 481 transitions. [2018-01-31 09:30:32,941 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-31 09:30:32,941 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 481 transitions. [2018-01-31 09:30:32,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2018-01-31 09:30:32,944 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:30:32,945 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 09:30:32,945 INFO L371 AbstractCegarLoop]: === Iteration 39 === [mainErr0AssertViolation]=== [2018-01-31 09:30:32,945 INFO L82 PathProgramCache]: Analyzing trace with hash 2067884637, now seen corresponding path program 35 times [2018-01-31 09:30:32,945 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:30:32,945 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:30:32,946 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:32,946 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:30:32,946 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:30:32,962 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:30:33,967 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 09:30:33,967 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:30:33,968 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 09:30:33,972 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:30:33,989 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:33,995 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:34,006 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:34,009 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:34,013 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:34,016 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:34,020 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:34,025 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:34,031 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:34,038 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:34,060 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:34,074 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:34,113 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:34,151 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:34,229 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:34,274 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:34,441 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:34,575 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:35,318 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:37,289 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:38,573 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:40,421 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:40,427 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:30:40,438 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:30:40,648 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 09:30:40,668 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:30:40,668 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2018-01-31 09:30:40,669 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-31 09:30:40,669 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-31 09:30:40,669 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-31 09:30:40,669 INFO L87 Difference]: Start difference. First operand 477 states and 481 transitions. Second operand 31 states. [2018-01-31 09:30:40,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:30:40,956 INFO L93 Difference]: Finished difference Result 668 states and 673 transitions. [2018-01-31 09:30:40,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-31 09:30:40,958 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 816 [2018-01-31 09:30:40,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:30:40,959 INFO L225 Difference]: With dead ends: 668 [2018-01-31 09:30:40,959 INFO L226 Difference]: Without dead ends: 490 [2018-01-31 09:30:40,960 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 09:30:40,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2018-01-31 09:30:40,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 485. [2018-01-31 09:30:40,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2018-01-31 09:30:40,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 489 transitions. [2018-01-31 09:30:40,963 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 489 transitions. Word has length 816 [2018-01-31 09:30:40,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:30:40,964 INFO L432 AbstractCegarLoop]: Abstraction has 485 states and 489 transitions. [2018-01-31 09:30:40,964 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-31 09:30:40,964 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 489 transitions. [2018-01-31 09:30:40,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 825 [2018-01-31 09:30:40,968 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:30:40,968 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 09:30:40,968 INFO L371 AbstractCegarLoop]: === Iteration 40 === [mainErr0AssertViolation]=== [2018-01-31 09:30:40,969 INFO L82 PathProgramCache]: Analyzing trace with hash -443942188, now seen corresponding path program 36 times [2018-01-31 09:30:40,969 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:30:40,969 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:30:40,969 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:40,969 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:30:40,969 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:30:40,987 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:30:42,068 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 09:30:42,069 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:30:42,069 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 09:30:42,073 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:30:42,093 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:42,095 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:42,098 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:42,101 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:42,105 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:42,118 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:42,127 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:42,154 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:42,192 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:42,233 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:42,268 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:42,310 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:42,372 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:42,418 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:42,723 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:42,852 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:43,354 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:43,929 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:44,347 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:44,501 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:44,847 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:45,302 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:45,552 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:30:45,557 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:30:45,568 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:30:45,773 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 09:30:45,796 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:30:45,796 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2018-01-31 09:30:45,797 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-31 09:30:45,797 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-31 09:30:45,797 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 09:30:45,797 INFO L87 Difference]: Start difference. First operand 485 states and 489 transitions. Second operand 33 states. [2018-01-31 09:30:46,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:30:46,114 INFO L93 Difference]: Finished difference Result 676 states and 681 transitions. [2018-01-31 09:30:46,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-31 09:30:46,115 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 824 [2018-01-31 09:30:46,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:30:46,116 INFO L225 Difference]: With dead ends: 676 [2018-01-31 09:30:46,116 INFO L226 Difference]: Without dead ends: 498 [2018-01-31 09:30:46,117 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 09:30:46,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2018-01-31 09:30:46,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 493. [2018-01-31 09:30:46,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2018-01-31 09:30:46,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 497 transitions. [2018-01-31 09:30:46,121 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 497 transitions. Word has length 824 [2018-01-31 09:30:46,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:30:46,121 INFO L432 AbstractCegarLoop]: Abstraction has 493 states and 497 transitions. [2018-01-31 09:30:46,121 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-31 09:30:46,121 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 497 transitions. [2018-01-31 09:30:46,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 833 [2018-01-31 09:30:46,125 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:30:46,125 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 09:30:46,125 INFO L371 AbstractCegarLoop]: === Iteration 41 === [mainErr0AssertViolation]=== [2018-01-31 09:30:46,125 INFO L82 PathProgramCache]: Analyzing trace with hash -233692085, now seen corresponding path program 37 times [2018-01-31 09:30:46,125 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:30:46,125 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:30:46,126 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:46,126 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:30:46,126 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:30:46,146 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:30:47,331 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 09:30:47,331 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:30:47,331 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 09:30:47,336 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:30:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:30:47,414 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:30:47,599 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 09:30:47,616 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:30:47,617 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2018-01-31 09:30:47,617 INFO L409 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-01-31 09:30:47,617 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-01-31 09:30:47,617 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2018-01-31 09:30:47,617 INFO L87 Difference]: Start difference. First operand 493 states and 497 transitions. Second operand 35 states. [2018-01-31 09:30:47,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:30:47,953 INFO L93 Difference]: Finished difference Result 684 states and 689 transitions. [2018-01-31 09:30:47,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-01-31 09:30:47,953 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 832 [2018-01-31 09:30:47,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:30:47,955 INFO L225 Difference]: With dead ends: 684 [2018-01-31 09:30:47,955 INFO L226 Difference]: Without dead ends: 506 [2018-01-31 09:30:47,955 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 09:30:47,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2018-01-31 09:30:47,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 501. [2018-01-31 09:30:47,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2018-01-31 09:30:47,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 505 transitions. [2018-01-31 09:30:47,959 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 505 transitions. Word has length 832 [2018-01-31 09:30:47,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:30:47,959 INFO L432 AbstractCegarLoop]: Abstraction has 501 states and 505 transitions. [2018-01-31 09:30:47,959 INFO L433 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-01-31 09:30:47,959 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 505 transitions. [2018-01-31 09:30:47,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 841 [2018-01-31 09:30:47,963 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:30:47,963 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 09:30:47,963 INFO L371 AbstractCegarLoop]: === Iteration 42 === [mainErr0AssertViolation]=== [2018-01-31 09:30:47,963 INFO L82 PathProgramCache]: Analyzing trace with hash -667883838, now seen corresponding path program 38 times [2018-01-31 09:30:47,963 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:30:47,963 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:30:47,964 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:47,964 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:30:47,964 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:30:47,981 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:30:49,237 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 09:30:49,238 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:30:49,238 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 09:30:49,242 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:30:49,262 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:49,311 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:30:49,321 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:30:49,326 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:30:49,566 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 09:30:49,588 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:30:49,589 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2018-01-31 09:30:49,589 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-31 09:30:49,589 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-31 09:30:49,589 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 09:30:49,590 INFO L87 Difference]: Start difference. First operand 501 states and 505 transitions. Second operand 37 states. [2018-01-31 09:30:50,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:30:50,014 INFO L93 Difference]: Finished difference Result 692 states and 697 transitions. [2018-01-31 09:30:50,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-01-31 09:30:50,016 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 840 [2018-01-31 09:30:50,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:30:50,017 INFO L225 Difference]: With dead ends: 692 [2018-01-31 09:30:50,017 INFO L226 Difference]: Without dead ends: 514 [2018-01-31 09:30:50,018 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 839 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2018-01-31 09:30:50,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2018-01-31 09:30:50,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 509. [2018-01-31 09:30:50,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2018-01-31 09:30:50,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 513 transitions. [2018-01-31 09:30:50,022 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 513 transitions. Word has length 840 [2018-01-31 09:30:50,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:30:50,023 INFO L432 AbstractCegarLoop]: Abstraction has 509 states and 513 transitions. [2018-01-31 09:30:50,023 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-31 09:30:50,023 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 513 transitions. [2018-01-31 09:30:50,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 849 [2018-01-31 09:30:50,027 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:30:50,028 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 09:30:50,028 INFO L371 AbstractCegarLoop]: === Iteration 43 === [mainErr0AssertViolation]=== [2018-01-31 09:30:50,028 INFO L82 PathProgramCache]: Analyzing trace with hash -2009251271, now seen corresponding path program 39 times [2018-01-31 09:30:50,028 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:30:50,028 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:30:50,028 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:50,029 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:30:50,029 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:30:50,045 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:30:51,363 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 09:30:51,363 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:30:51,363 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 09:30:51,368 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:30:51,386 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:51,395 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:51,402 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:51,418 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:51,429 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:51,447 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:51,481 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:51,527 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:51,571 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:51,789 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:51,899 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:52,003 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:52,280 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:53,036 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:53,119 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:53,331 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:54,201 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:54,681 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:55,064 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:30:55,069 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:30:55,081 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:30:55,360 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 09:30:55,381 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:30:55,381 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 40] total 42 [2018-01-31 09:30:55,381 INFO L409 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-01-31 09:30:55,381 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-01-31 09:30:55,382 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=1316, Unknown=0, NotChecked=0, Total=1722 [2018-01-31 09:30:55,382 INFO L87 Difference]: Start difference. First operand 509 states and 513 transitions. Second operand 42 states. [2018-01-31 09:30:56,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:30:56,128 INFO L93 Difference]: Finished difference Result 700 states and 705 transitions. [2018-01-31 09:30:56,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-01-31 09:30:56,128 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 848 [2018-01-31 09:30:56,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:30:56,129 INFO L225 Difference]: With dead ends: 700 [2018-01-31 09:30:56,129 INFO L226 Difference]: Without dead ends: 522 [2018-01-31 09:30:56,130 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 09:30:56,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2018-01-31 09:30:56,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 517. [2018-01-31 09:30:56,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 517 states. [2018-01-31 09:30:56,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 521 transitions. [2018-01-31 09:30:56,134 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 521 transitions. Word has length 848 [2018-01-31 09:30:56,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:30:56,135 INFO L432 AbstractCegarLoop]: Abstraction has 517 states and 521 transitions. [2018-01-31 09:30:56,135 INFO L433 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-01-31 09:30:56,135 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 521 transitions. [2018-01-31 09:30:56,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2018-01-31 09:30:56,138 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:30:56,139 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 09:30:56,139 INFO L371 AbstractCegarLoop]: === Iteration 44 === [mainErr0AssertViolation]=== [2018-01-31 09:30:56,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1416743248, now seen corresponding path program 40 times [2018-01-31 09:30:56,139 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:30:56,139 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:30:56,139 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:56,139 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:30:56,139 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:30:56,157 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:30:57,546 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 09:30:57,546 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:30:57,546 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 09:30:57,551 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:30:58,330 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:30:58,337 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:30:58,549 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 09:30:58,570 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:30:58,570 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2018-01-31 09:30:58,571 INFO L409 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-01-31 09:30:58,571 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-01-31 09:30:58,571 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2018-01-31 09:30:58,571 INFO L87 Difference]: Start difference. First operand 517 states and 521 transitions. Second operand 41 states. [2018-01-31 09:30:59,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:30:59,015 INFO L93 Difference]: Finished difference Result 703 states and 708 transitions. [2018-01-31 09:30:59,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-01-31 09:30:59,015 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 856 [2018-01-31 09:30:59,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:30:59,017 INFO L225 Difference]: With dead ends: 703 [2018-01-31 09:30:59,017 INFO L226 Difference]: Without dead ends: 525 [2018-01-31 09:30:59,017 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 930 GetRequests, 855 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2018-01-31 09:30:59,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2018-01-31 09:30:59,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2018-01-31 09:30:59,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-01-31 09:30:59,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 529 transitions. [2018-01-31 09:30:59,021 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 529 transitions. Word has length 856 [2018-01-31 09:30:59,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:30:59,021 INFO L432 AbstractCegarLoop]: Abstraction has 525 states and 529 transitions. [2018-01-31 09:30:59,021 INFO L433 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-01-31 09:30:59,021 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 529 transitions. [2018-01-31 09:30:59,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2018-01-31 09:30:59,025 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:30:59,025 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 09:30:59,025 INFO L371 AbstractCegarLoop]: === Iteration 45 === [mainErr0AssertViolation]=== [2018-01-31 09:30:59,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1535458265, now seen corresponding path program 41 times [2018-01-31 09:30:59,026 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:30:59,026 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:30:59,026 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:59,026 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:30:59,026 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:30:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:30:59,832 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 09:31:56,090 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:265) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.access$1(Interpolator.java:263) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:132) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:220) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:915) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackTraceAbstractionRefinementStrategy.getTraceCheck(MultiTrackTraceAbstractionRefinementStrategy.java:218) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:397) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:115) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:119) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-01-31 09:31:56,093 INFO L168 Benchmark]: Toolchain (without parser) took 146574.66 ms. Allocated memory was 151.0 MB in the beginning and 2.2 GB in the end (delta: 2.1 GB). Free memory was 116.0 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.1 GB. Max. memory is 5.3 GB. [2018-01-31 09:31:56,093 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 151.0 MB. Free memory is still 120.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 09:31:56,094 INFO L168 Benchmark]: CACSL2BoogieTranslator took 129.57 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 107.2 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 5.3 GB. [2018-01-31 09:31:56,094 INFO L168 Benchmark]: Boogie Preprocessor took 19.79 ms. Allocated memory is still 151.0 MB. Free memory was 107.2 MB in the beginning and 105.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 5.3 GB. [2018-01-31 09:31:56,094 INFO L168 Benchmark]: RCFGBuilder took 367.97 ms. Allocated memory is still 151.0 MB. Free memory was 105.4 MB in the beginning and 86.7 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 5.3 GB. [2018-01-31 09:31:56,094 INFO L168 Benchmark]: TraceAbstraction took 146054.91 ms. Allocated memory was 151.0 MB in the beginning and 2.2 GB in the end (delta: 2.1 GB). Free memory was 86.5 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.1 GB. Max. memory is 5.3 GB. [2018-01-31 09:31:56,095 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 151.0 MB. Free memory is still 120.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 129.57 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 107.2 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 19.79 ms. Allocated memory is still 151.0 MB. Free memory was 107.2 MB in the beginning and 105.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 5.3 GB. * RCFGBuilder took 367.97 ms. Allocated memory is still 151.0 MB. Free memory was 105.4 MB in the beginning and 86.7 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 146054.91 ms. Allocated memory was 151.0 MB in the beginning and 2.2 GB in the end (delta: 2.1 GB). Free memory was 86.5 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). 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.walkLeafNode(Interpolator.java:265) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum20_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-31_09-31-56-099.csv Completed graceful shutdown