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/sum40_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-5f7ec6e-m [2018-01-31 09:31:58,072 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 09:31:58,073 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 09:31:58,082 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 09:31:58,082 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 09:31:58,082 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 09:31:58,083 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 09:31:58,084 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 09:31:58,085 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 09:31:58,085 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 09:31:58,086 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 09:31:58,086 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 09:31:58,086 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 09:31:58,087 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 09:31:58,087 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 09:31:58,089 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 09:31:58,090 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 09:31:58,091 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 09:31:58,091 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 09:31:58,092 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 09:31:58,093 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-31 09:31:58,093 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-31 09:31:58,093 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-31 09:31:58,094 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-31 09:31:58,094 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-31 09:31:58,095 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-31 09:31:58,095 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-31 09:31:58,095 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-31 09:31:58,095 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-31 09:31:58,095 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 09:31:58,096 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 09:31:58,096 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 09:31:58,101 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 09:31:58,101 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 09:31:58,101 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 09:31:58,102 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 09:31:58,102 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 09:31:58,102 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 09:31:58,102 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 09:31:58,102 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 09:31:58,102 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 09:31:58,102 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 09:31:58,102 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 09:31:58,102 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 09:31:58,103 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-31 09:31:58,103 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 09:31:58,103 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-31 09:31:58,103 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 09:31:58,103 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-31 09:31:58,103 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-31 09:31:58,103 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 09:31:58,103 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 09:31:58,103 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 09:31:58,103 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 09:31:58,103 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 09:31:58,104 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 09:31:58,104 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 09:31:58,104 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 09:31:58,104 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 09:31:58,104 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 09:31:58,104 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 09:31:58,104 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 09:31:58,104 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 09:31:58,104 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 09:31:58,105 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 09:31:58,105 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 09:31:58,123 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 09:31:58,129 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 09:31:58,131 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 09:31:58,132 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 09:31:58,132 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 09:31:58,133 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum40_true-unreach-call.i [2018-01-31 09:31:58,194 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 09:31:58,195 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-31 09:31:58,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 09:31:58,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 09:31:58,199 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 09:31:58,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:31:58" (1/1) ... [2018-01-31 09:31:58,202 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 09:31:58, skipping insertion in model container [2018-01-31 09:31:58,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:31:58" (1/1) ... [2018-01-31 09:31:58,211 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:31:58,220 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:31:58,291 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:31:58,304 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:31:58,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:58 WrapperNode [2018-01-31 09:31:58,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 09:31:58,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 09:31:58,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 09:31:58,308 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 09:31:58,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:58" (1/1) ... [2018-01-31 09:31:58,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:58" (1/1) ... [2018-01-31 09:31:58,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:58" (1/1) ... [2018-01-31 09:31:58,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:58" (1/1) ... [2018-01-31 09:31:58,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:58" (1/1) ... [2018-01-31 09:31:58,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:58" (1/1) ... [2018-01-31 09:31:58,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:58" (1/1) ... [2018-01-31 09:31:58,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 09:31:58,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 09:31:58,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 09:31:58,328 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 09:31:58,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:58" (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 09:31:58,371 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 09:31:58,371 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 09:31:58,371 INFO L136 BoogieDeclarations]: Found implementation of procedure sum [2018-01-31 09:31:58,371 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 09:31:58,371 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 09:31:58,371 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 09:31:58,372 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 09:31:58,372 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 09:31:58,372 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 09:31:58,372 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-31 09:31:58,372 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 09:31:58,372 INFO L128 BoogieDeclarations]: Found specification of procedure sum [2018-01-31 09:31:58,372 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 09:31:58,372 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 09:31:58,372 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 09:31:58,689 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 09:31:58,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:31:58 BoogieIcfgContainer [2018-01-31 09:31:58,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 09:31:58,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 09:31:58,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 09:31:58,692 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 09:31:58,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 09:31:58" (1/3) ... [2018-01-31 09:31:58,692 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 09:31:58, skipping insertion in model container [2018-01-31 09:31:58,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:58" (2/3) ... [2018-01-31 09:31:58,693 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 09:31:58, skipping insertion in model container [2018-01-31 09:31:58,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:31:58" (3/3) ... [2018-01-31 09:31:58,694 INFO L107 eAbstractionObserver]: Analyzing ICFG sum40_true-unreach-call.i [2018-01-31 09:31:58,699 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 09:31:58,703 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-31 09:31:58,732 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 09:31:58,733 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 09:31:58,733 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 09:31:58,733 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 09:31:58,733 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 09:31:58,733 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 09:31:58,733 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 09:31:58,733 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 09:31:58,734 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 09:31:58,743 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2018-01-31 09:31:58,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-01-31 09:31:58,751 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:58,752 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 09:31:58,752 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolation]=== [2018-01-31 09:31:58,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1274758379, now seen corresponding path program 1 times [2018-01-31 09:31:58,755 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:58,756 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:58,784 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:58,784 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:58,784 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:58,814 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:58,865 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 09:31:58,866 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:31:58,866 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 09:31:58,868 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-31 09:31:58,876 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-31 09:31:58,876 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 09:31:58,878 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 2 states. [2018-01-31 09:31:58,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:31:58,894 INFO L93 Difference]: Finished difference Result 136 states and 153 transitions. [2018-01-31 09:31:58,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-31 09:31:58,895 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 67 [2018-01-31 09:31:58,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:31:58,900 INFO L225 Difference]: With dead ends: 136 [2018-01-31 09:31:58,900 INFO L226 Difference]: Without dead ends: 71 [2018-01-31 09:31:58,902 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 09:31:58,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-01-31 09:31:58,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-01-31 09:31:58,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-01-31 09:31:58,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2018-01-31 09:31:58,928 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 67 [2018-01-31 09:31:58,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:31:58,929 INFO L432 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2018-01-31 09:31:58,929 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-31 09:31:58,929 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2018-01-31 09:31:58,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-01-31 09:31:58,986 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:58,987 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 09:31:58,987 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolation]=== [2018-01-31 09:31:58,987 INFO L82 PathProgramCache]: Analyzing trace with hash -780571542, now seen corresponding path program 1 times [2018-01-31 09:31:58,987 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:58,987 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:58,988 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:58,988 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:58,988 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:58,999 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:59,063 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 09:31:59,063 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:31:59,064 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 09:31:59,065 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 09:31:59,066 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 09:31:59,066 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 09:31:59,066 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 3 states. [2018-01-31 09:31:59,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:31:59,141 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2018-01-31 09:31:59,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 09:31:59,142 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2018-01-31 09:31:59,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:31:59,142 INFO L225 Difference]: With dead ends: 129 [2018-01-31 09:31:59,143 INFO L226 Difference]: Without dead ends: 78 [2018-01-31 09:31:59,143 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 09:31:59,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-01-31 09:31:59,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2018-01-31 09:31:59,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-01-31 09:31:59,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2018-01-31 09:31:59,148 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 72 [2018-01-31 09:31:59,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:31:59,149 INFO L432 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2018-01-31 09:31:59,149 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 09:31:59,149 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2018-01-31 09:31:59,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-01-31 09:31:59,150 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:59,150 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 09:31:59,150 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolation]=== [2018-01-31 09:31:59,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1544788435, now seen corresponding path program 1 times [2018-01-31 09:31:59,152 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:59,152 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:59,153 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:59,153 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:59,154 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:59,165 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:59,246 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 09:31:59,246 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:31:59,246 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 09:31:59,281 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:59,332 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:31:59,383 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 09:31:59,399 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:31:59,400 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 09:31:59,400 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 09:31:59,400 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 09:31:59,400 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 09:31:59,401 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 6 states. [2018-01-31 09:31:59,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:31:59,697 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2018-01-31 09:31:59,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 09:31:59,698 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2018-01-31 09:31:59,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:31:59,699 INFO L225 Difference]: With dead ends: 144 [2018-01-31 09:31:59,699 INFO L226 Difference]: Without dead ends: 93 [2018-01-31 09:31:59,699 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-31 09:31:59,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-01-31 09:31:59,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2018-01-31 09:31:59,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-01-31 09:31:59,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2018-01-31 09:31:59,704 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 80 [2018-01-31 09:31:59,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:31:59,705 INFO L432 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2018-01-31 09:31:59,705 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 09:31:59,705 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2018-01-31 09:31:59,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-01-31 09:31:59,706 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:59,706 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 09:31:59,707 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolation]=== [2018-01-31 09:31:59,707 INFO L82 PathProgramCache]: Analyzing trace with hash 278598597, now seen corresponding path program 1 times [2018-01-31 09:31:59,707 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:59,707 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:59,708 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:59,708 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:59,708 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:59,718 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:59,817 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 09:31:59,817 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:31:59,817 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 09:31:59,831 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 09:31:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:59,866 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:31:59,896 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 09:31:59,913 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:31:59,914 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 09:31:59,914 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 09:31:59,914 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 09:31:59,914 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 09:31:59,914 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 6 states. [2018-01-31 09:32:00,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:00,014 INFO L93 Difference]: Finished difference Result 155 states and 166 transitions. [2018-01-31 09:32:00,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 09:32:00,014 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-01-31 09:32:00,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:00,015 INFO L225 Difference]: With dead ends: 155 [2018-01-31 09:32:00,015 INFO L226 Difference]: Without dead ends: 103 [2018-01-31 09:32:00,016 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-31 09:32:00,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-01-31 09:32:00,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 93. [2018-01-31 09:32:00,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-01-31 09:32:00,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2018-01-31 09:32:00,021 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 112 [2018-01-31 09:32:00,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:00,021 INFO L432 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2018-01-31 09:32:00,021 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 09:32:00,021 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2018-01-31 09:32:00,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-01-31 09:32:00,023 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:00,023 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 09:32:00,023 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolation]=== [2018-01-31 09:32:00,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1429723589, now seen corresponding path program 1 times [2018-01-31 09:32:00,023 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:00,024 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:00,024 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:00,024 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:32:00,024 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:00,038 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:00,115 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 09:32:00,116 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:00,116 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 09:32:00,122 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:32:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:00,153 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:32:00,386 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 09:32:00,403 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:32:00,403 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2018-01-31 09:32:00,403 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-31 09:32:00,404 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-31 09:32:00,404 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-31 09:32:00,404 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 10 states. [2018-01-31 09:32:00,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:00,599 INFO L93 Difference]: Finished difference Result 182 states and 191 transitions. [2018-01-31 09:32:00,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-31 09:32:00,602 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 144 [2018-01-31 09:32:00,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:00,603 INFO L225 Difference]: With dead ends: 182 [2018-01-31 09:32:00,603 INFO L226 Difference]: Without dead ends: 119 [2018-01-31 09:32:00,603 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 09:32:00,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-01-31 09:32:00,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 109. [2018-01-31 09:32:00,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-01-31 09:32:00,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2018-01-31 09:32:00,616 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 144 [2018-01-31 09:32:00,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:00,617 INFO L432 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2018-01-31 09:32:00,617 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-31 09:32:00,617 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2018-01-31 09:32:00,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-01-31 09:32:00,618 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:00,618 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 09:32:00,618 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolation]=== [2018-01-31 09:32:00,618 INFO L82 PathProgramCache]: Analyzing trace with hash 918434213, now seen corresponding path program 2 times [2018-01-31 09:32:00,618 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:00,618 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:00,619 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:00,619 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:32:00,619 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:00,663 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:00,772 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 09:32:00,772 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:00,772 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 09:32:00,777 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:32:00,787 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:00,807 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:00,816 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:32:00,819 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:32:01,036 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 09:32:01,053 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:32:01,053 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2018-01-31 09:32:01,053 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-31 09:32:01,054 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-31 09:32:01,054 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-01-31 09:32:01,054 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 14 states. [2018-01-31 09:32:01,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:01,362 INFO L93 Difference]: Finished difference Result 206 states and 218 transitions. [2018-01-31 09:32:01,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-31 09:32:01,371 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 160 [2018-01-31 09:32:01,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:01,371 INFO L225 Difference]: With dead ends: 206 [2018-01-31 09:32:01,371 INFO L226 Difference]: Without dead ends: 135 [2018-01-31 09:32:01,372 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2018-01-31 09:32:01,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-01-31 09:32:01,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 125. [2018-01-31 09:32:01,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-01-31 09:32:01,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2018-01-31 09:32:01,377 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 160 [2018-01-31 09:32:01,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:01,377 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2018-01-31 09:32:01,377 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-31 09:32:01,377 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2018-01-31 09:32:01,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-01-31 09:32:01,378 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:01,378 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 09:32:01,381 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolation]=== [2018-01-31 09:32:01,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1059719273, now seen corresponding path program 3 times [2018-01-31 09:32:01,382 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:01,382 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:01,383 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:01,383 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:32:01,383 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:01,403 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:01,604 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 09:32:01,604 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:01,604 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 09:32:01,609 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:32:01,619 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:01,627 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:01,633 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:01,644 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:01,645 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:32:01,649 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:32:01,684 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 09:32:01,703 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:32:01,703 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-01-31 09:32:01,703 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 09:32:01,704 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 09:32:01,704 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-31 09:32:01,704 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand 9 states. [2018-01-31 09:32:01,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:01,780 INFO L93 Difference]: Finished difference Result 180 states and 185 transitions. [2018-01-31 09:32:01,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-31 09:32:01,780 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 192 [2018-01-31 09:32:01,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:01,781 INFO L225 Difference]: With dead ends: 180 [2018-01-31 09:32:01,781 INFO L226 Difference]: Without dead ends: 138 [2018-01-31 09:32:01,781 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 09:32:01,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-01-31 09:32:01,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 133. [2018-01-31 09:32:01,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-01-31 09:32:01,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 137 transitions. [2018-01-31 09:32:01,786 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 137 transitions. Word has length 192 [2018-01-31 09:32:01,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:01,787 INFO L432 AbstractCegarLoop]: Abstraction has 133 states and 137 transitions. [2018-01-31 09:32:01,787 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 09:32:01,787 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 137 transitions. [2018-01-31 09:32:01,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-01-31 09:32:01,788 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:01,788 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 09:32:01,788 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolation]=== [2018-01-31 09:32:01,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1802943502, now seen corresponding path program 4 times [2018-01-31 09:32:01,789 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:01,789 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:01,789 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:01,789 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:32:01,789 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:01,801 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:02,099 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 09:32:02,099 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:02,099 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 09:32:02,106 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:32:02,148 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:32:02,150 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:32:02,177 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 09:32:02,194 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:32:02,194 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2018-01-31 09:32:02,195 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-31 09:32:02,195 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-31 09:32:02,195 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-31 09:32:02,195 INFO L87 Difference]: Start difference. First operand 133 states and 137 transitions. Second operand 13 states. [2018-01-31 09:32:02,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:02,300 INFO L93 Difference]: Finished difference Result 233 states and 241 transitions. [2018-01-31 09:32:02,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-31 09:32:02,311 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 200 [2018-01-31 09:32:02,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:02,311 INFO L225 Difference]: With dead ends: 233 [2018-01-31 09:32:02,311 INFO L226 Difference]: Without dead ends: 146 [2018-01-31 09:32:02,312 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2018-01-31 09:32:02,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-31 09:32:02,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 141. [2018-01-31 09:32:02,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-01-31 09:32:02,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 145 transitions. [2018-01-31 09:32:02,315 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 145 transitions. Word has length 200 [2018-01-31 09:32:02,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:02,316 INFO L432 AbstractCegarLoop]: Abstraction has 141 states and 145 transitions. [2018-01-31 09:32:02,316 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-31 09:32:02,316 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 145 transitions. [2018-01-31 09:32:02,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-01-31 09:32:02,317 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:02,317 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 09:32:02,317 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolation]=== [2018-01-31 09:32:02,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1334925687, now seen corresponding path program 5 times [2018-01-31 09:32:02,317 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:02,317 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:02,318 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:02,318 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:32:02,318 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:02,329 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:02,506 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 09:32:02,506 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:02,506 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 09:32:02,513 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:32:02,522 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:02,525 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:02,529 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:02,536 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:02,537 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:32:02,539 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:32:02,604 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 09:32:02,622 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:32:02,622 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2018-01-31 09:32:02,622 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-31 09:32:02,622 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-31 09:32:02,623 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2018-01-31 09:32:02,623 INFO L87 Difference]: Start difference. First operand 141 states and 145 transitions. Second operand 20 states. [2018-01-31 09:32:02,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:02,879 INFO L93 Difference]: Finished difference Result 254 states and 266 transitions. [2018-01-31 09:32:02,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-31 09:32:02,880 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 208 [2018-01-31 09:32:02,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:02,881 INFO L225 Difference]: With dead ends: 254 [2018-01-31 09:32:02,881 INFO L226 Difference]: Without dead ends: 167 [2018-01-31 09:32:02,882 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 09:32:02,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-01-31 09:32:02,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 157. [2018-01-31 09:32:02,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-01-31 09:32:02,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 161 transitions. [2018-01-31 09:32:02,889 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 161 transitions. Word has length 208 [2018-01-31 09:32:02,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:02,889 INFO L432 AbstractCegarLoop]: Abstraction has 157 states and 161 transitions. [2018-01-31 09:32:02,889 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-01-31 09:32:02,889 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 161 transitions. [2018-01-31 09:32:02,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-01-31 09:32:02,891 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:02,891 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 09:32:02,891 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolation]=== [2018-01-31 09:32:02,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1311007081, now seen corresponding path program 6 times [2018-01-31 09:32:02,891 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:02,891 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:02,892 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:02,892 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:32:02,892 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:02,903 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:03,086 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 09:32:03,086 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:03,086 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 09:32:03,091 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:32:03,102 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:03,105 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:03,108 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:03,112 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:03,118 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:03,132 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:03,144 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:03,145 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:32:03,147 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:32:03,231 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 09:32:03,248 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:32:03,248 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2018-01-31 09:32:03,249 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-31 09:32:03,249 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-31 09:32:03,249 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2018-01-31 09:32:03,249 INFO L87 Difference]: Start difference. First operand 157 states and 161 transitions. Second operand 24 states. [2018-01-31 09:32:03,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:03,543 INFO L93 Difference]: Finished difference Result 278 states and 290 transitions. [2018-01-31 09:32:03,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-31 09:32:03,548 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 240 [2018-01-31 09:32:03,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:03,549 INFO L225 Difference]: With dead ends: 278 [2018-01-31 09:32:03,549 INFO L226 Difference]: Without dead ends: 183 [2018-01-31 09:32:03,549 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 09:32:03,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-01-31 09:32:03,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 173. [2018-01-31 09:32:03,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-01-31 09:32:03,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 177 transitions. [2018-01-31 09:32:03,553 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 177 transitions. Word has length 240 [2018-01-31 09:32:03,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:03,554 INFO L432 AbstractCegarLoop]: Abstraction has 173 states and 177 transitions. [2018-01-31 09:32:03,554 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-31 09:32:03,554 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 177 transitions. [2018-01-31 09:32:03,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-01-31 09:32:03,555 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:03,555 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 09:32:03,555 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolation]=== [2018-01-31 09:32:03,555 INFO L82 PathProgramCache]: Analyzing trace with hash 438292315, now seen corresponding path program 7 times [2018-01-31 09:32:03,555 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:03,555 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:03,556 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:03,556 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:32:03,556 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:03,567 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:03,845 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 09:32:03,846 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:03,846 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 09:32:03,851 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:32:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:03,910 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:32:04,256 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 09:32:04,274 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:32:04,274 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2018-01-31 09:32:04,275 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-31 09:32:04,275 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-31 09:32:04,275 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-31 09:32:04,275 INFO L87 Difference]: Start difference. First operand 173 states and 177 transitions. Second operand 19 states. [2018-01-31 09:32:04,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:04,509 INFO L93 Difference]: Finished difference Result 289 states and 297 transitions. [2018-01-31 09:32:04,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-31 09:32:04,516 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 272 [2018-01-31 09:32:04,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:04,516 INFO L225 Difference]: With dead ends: 289 [2018-01-31 09:32:04,517 INFO L226 Difference]: Without dead ends: 186 [2018-01-31 09:32:04,517 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 09:32:04,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-01-31 09:32:04,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 181. [2018-01-31 09:32:04,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-01-31 09:32:04,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 185 transitions. [2018-01-31 09:32:04,520 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 185 transitions. Word has length 272 [2018-01-31 09:32:04,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:04,520 INFO L432 AbstractCegarLoop]: Abstraction has 181 states and 185 transitions. [2018-01-31 09:32:04,520 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-31 09:32:04,520 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 185 transitions. [2018-01-31 09:32:04,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-01-31 09:32:04,521 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:04,521 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 09:32:04,522 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolation]=== [2018-01-31 09:32:04,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1690774468, now seen corresponding path program 8 times [2018-01-31 09:32:04,522 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:04,522 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:04,522 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:04,522 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:32:04,522 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:04,534 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:04,970 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 09:32:04,970 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:04,970 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 09:32:04,984 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:32:04,997 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:05,014 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:05,017 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:32:05,020 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:32:05,092 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 09:32:05,109 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:32:05,109 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-31 09:32:05,110 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 09:32:05,110 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 09:32:05,110 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-31 09:32:05,110 INFO L87 Difference]: Start difference. First operand 181 states and 185 transitions. Second operand 21 states. [2018-01-31 09:32:05,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:05,333 INFO L93 Difference]: Finished difference Result 297 states and 305 transitions. [2018-01-31 09:32:05,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-31 09:32:05,333 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 280 [2018-01-31 09:32:05,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:05,334 INFO L225 Difference]: With dead ends: 297 [2018-01-31 09:32:05,334 INFO L226 Difference]: Without dead ends: 194 [2018-01-31 09:32:05,335 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 09:32:05,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-01-31 09:32:05,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 189. [2018-01-31 09:32:05,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-31 09:32:05,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 193 transitions. [2018-01-31 09:32:05,338 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 193 transitions. Word has length 280 [2018-01-31 09:32:05,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:05,338 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 193 transitions. [2018-01-31 09:32:05,338 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 09:32:05,338 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 193 transitions. [2018-01-31 09:32:05,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-01-31 09:32:05,339 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:05,339 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 09:32:05,339 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolation]=== [2018-01-31 09:32:05,339 INFO L82 PathProgramCache]: Analyzing trace with hash -2140926163, now seen corresponding path program 9 times [2018-01-31 09:32:05,339 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:05,339 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:05,340 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:05,340 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:32:05,340 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:05,350 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:05,832 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 09:32:05,833 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:05,833 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 09:32:05,839 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:32:05,852 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:05,856 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:05,861 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:05,869 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:05,886 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:05,887 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:32:05,890 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:32:06,000 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 09:32:06,018 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:32:06,018 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9] total 28 [2018-01-31 09:32:06,020 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-31 09:32:06,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-31 09:32:06,020 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2018-01-31 09:32:06,020 INFO L87 Difference]: Start difference. First operand 189 states and 193 transitions. Second operand 28 states. [2018-01-31 09:32:06,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:06,461 INFO L93 Difference]: Finished difference Result 318 states and 327 transitions. [2018-01-31 09:32:06,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-31 09:32:06,462 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 288 [2018-01-31 09:32:06,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:06,463 INFO L225 Difference]: With dead ends: 318 [2018-01-31 09:32:06,463 INFO L226 Difference]: Without dead ends: 215 [2018-01-31 09:32:06,464 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=575, Invalid=2077, Unknown=0, NotChecked=0, Total=2652 [2018-01-31 09:32:06,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-01-31 09:32:06,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 205. [2018-01-31 09:32:06,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-01-31 09:32:06,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 209 transitions. [2018-01-31 09:32:06,467 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 209 transitions. Word has length 288 [2018-01-31 09:32:06,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:06,469 INFO L432 AbstractCegarLoop]: Abstraction has 205 states and 209 transitions. [2018-01-31 09:32:06,469 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-31 09:32:06,469 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 209 transitions. [2018-01-31 09:32:06,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-01-31 09:32:06,470 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:06,470 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 09:32:06,475 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolation]=== [2018-01-31 09:32:06,475 INFO L82 PathProgramCache]: Analyzing trace with hash -584748275, now seen corresponding path program 10 times [2018-01-31 09:32:06,476 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:06,476 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:06,476 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:06,476 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:32:06,476 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:06,502 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:07,179 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 09:32:07,179 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:07,179 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 09:32:07,184 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:32:07,243 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:32:07,246 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:32:07,293 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 09:32:07,310 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:32:07,310 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2018-01-31 09:32:07,311 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-31 09:32:07,311 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-31 09:32:07,311 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-01-31 09:32:07,311 INFO L87 Difference]: Start difference. First operand 205 states and 209 transitions. Second operand 25 states. [2018-01-31 09:32:07,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:07,609 INFO L93 Difference]: Finished difference Result 329 states and 337 transitions. [2018-01-31 09:32:07,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-31 09:32:07,617 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 304 [2018-01-31 09:32:07,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:07,618 INFO L225 Difference]: With dead ends: 329 [2018-01-31 09:32:07,618 INFO L226 Difference]: Without dead ends: 218 [2018-01-31 09:32:07,619 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2018-01-31 09:32:07,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-01-31 09:32:07,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 213. [2018-01-31 09:32:07,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-01-31 09:32:07,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 217 transitions. [2018-01-31 09:32:07,622 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 217 transitions. Word has length 304 [2018-01-31 09:32:07,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:07,622 INFO L432 AbstractCegarLoop]: Abstraction has 213 states and 217 transitions. [2018-01-31 09:32:07,622 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-31 09:32:07,622 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 217 transitions. [2018-01-31 09:32:07,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-01-31 09:32:07,623 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:07,623 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 09:32:07,623 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolation]=== [2018-01-31 09:32:07,623 INFO L82 PathProgramCache]: Analyzing trace with hash -254219402, now seen corresponding path program 11 times [2018-01-31 09:32:07,623 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:07,623 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:07,624 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:07,624 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:32:07,624 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:07,635 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:08,072 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 09:32:08,072 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:08,072 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 09:32:08,076 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:32:08,085 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:08,089 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:08,091 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:08,092 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:08,095 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:08,098 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:08,103 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:08,108 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:08,118 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:08,147 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:08,148 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:32:08,150 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:32:08,319 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 09:32:08,336 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:32:08,336 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13] total 36 [2018-01-31 09:32:08,337 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-31 09:32:08,337 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-31 09:32:08,337 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1045, Unknown=0, NotChecked=0, Total=1260 [2018-01-31 09:32:08,337 INFO L87 Difference]: Start difference. First operand 213 states and 217 transitions. Second operand 36 states. [2018-01-31 09:32:09,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:09,414 INFO L93 Difference]: Finished difference Result 350 states and 362 transitions. [2018-01-31 09:32:09,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-01-31 09:32:09,414 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 312 [2018-01-31 09:32:09,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:09,415 INFO L225 Difference]: With dead ends: 350 [2018-01-31 09:32:09,415 INFO L226 Difference]: Without dead ends: 239 [2018-01-31 09:32:09,416 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=895, Invalid=3661, Unknown=0, NotChecked=0, Total=4556 [2018-01-31 09:32:09,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-01-31 09:32:09,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 229. [2018-01-31 09:32:09,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-01-31 09:32:09,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2018-01-31 09:32:09,420 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 312 [2018-01-31 09:32:09,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:09,420 INFO L432 AbstractCegarLoop]: Abstraction has 229 states and 233 transitions. [2018-01-31 09:32:09,420 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-31 09:32:09,420 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 233 transitions. [2018-01-31 09:32:09,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-01-31 09:32:09,421 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:09,421 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 09:32:09,421 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolation]=== [2018-01-31 09:32:09,422 INFO L82 PathProgramCache]: Analyzing trace with hash 87027560, now seen corresponding path program 12 times [2018-01-31 09:32:09,422 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:09,422 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:09,422 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:09,422 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:32:09,422 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:09,433 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:09,783 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 09:32:09,783 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:09,783 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 09:32:09,788 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:32:09,809 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:09,821 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:09,836 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:09,843 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:09,858 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:09,888 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:09,918 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:09,957 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:10,042 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:10,131 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:10,322 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:10,324 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:32:10,328 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:32:10,477 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 09:32:10,494 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:32:10,495 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 11] total 36 [2018-01-31 09:32:10,495 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-31 09:32:10,495 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-31 09:32:10,496 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1031, Unknown=0, NotChecked=0, Total=1260 [2018-01-31 09:32:10,496 INFO L87 Difference]: Start difference. First operand 229 states and 233 transitions. Second operand 36 states. [2018-01-31 09:32:10,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:10,901 INFO L93 Difference]: Finished difference Result 374 states and 383 transitions. [2018-01-31 09:32:10,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-01-31 09:32:10,911 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 344 [2018-01-31 09:32:10,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:10,911 INFO L225 Difference]: With dead ends: 374 [2018-01-31 09:32:10,911 INFO L226 Difference]: Without dead ends: 255 [2018-01-31 09:32:10,912 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=965, Invalid=3591, Unknown=0, NotChecked=0, Total=4556 [2018-01-31 09:32:10,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-01-31 09:32:10,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 245. [2018-01-31 09:32:10,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-01-31 09:32:10,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 249 transitions. [2018-01-31 09:32:10,916 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 249 transitions. Word has length 344 [2018-01-31 09:32:10,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:10,916 INFO L432 AbstractCegarLoop]: Abstraction has 245 states and 249 transitions. [2018-01-31 09:32:10,916 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-31 09:32:10,916 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 249 transitions. [2018-01-31 09:32:10,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-01-31 09:32:10,917 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:10,917 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 09:32:10,917 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolation]=== [2018-01-31 09:32:10,918 INFO L82 PathProgramCache]: Analyzing trace with hash -32347320, now seen corresponding path program 13 times [2018-01-31 09:32:10,918 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:10,918 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:10,918 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:10,918 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:32:10,918 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:10,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:10,929 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:11,598 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 09:32:11,598 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:11,598 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 09:32:11,603 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:32:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:11,647 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:32:12,096 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 09:32:12,114 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:32:12,114 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2018-01-31 09:32:12,114 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-31 09:32:12,115 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-31 09:32:12,115 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-31 09:32:12,115 INFO L87 Difference]: Start difference. First operand 245 states and 249 transitions. Second operand 31 states. [2018-01-31 09:32:12,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:12,635 INFO L93 Difference]: Finished difference Result 385 states and 393 transitions. [2018-01-31 09:32:12,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-31 09:32:12,647 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 360 [2018-01-31 09:32:12,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:12,648 INFO L225 Difference]: With dead ends: 385 [2018-01-31 09:32:12,648 INFO L226 Difference]: Without dead ends: 258 [2018-01-31 09:32:12,649 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2018-01-31 09:32:12,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-01-31 09:32:12,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 253. [2018-01-31 09:32:12,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-01-31 09:32:12,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 257 transitions. [2018-01-31 09:32:12,652 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 257 transitions. Word has length 360 [2018-01-31 09:32:12,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:12,652 INFO L432 AbstractCegarLoop]: Abstraction has 253 states and 257 transitions. [2018-01-31 09:32:12,652 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-31 09:32:12,652 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 257 transitions. [2018-01-31 09:32:12,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-01-31 09:32:12,653 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:12,654 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 09:32:12,654 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolation]=== [2018-01-31 09:32:12,654 INFO L82 PathProgramCache]: Analyzing trace with hash 716543153, now seen corresponding path program 14 times [2018-01-31 09:32:12,654 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:12,654 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:12,654 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:12,654 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:32:12,654 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:12,675 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:13,578 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 09:32:13,578 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:13,578 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 09:32:13,583 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:32:13,595 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:13,617 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:13,621 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:32:13,624 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:32:13,687 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 09:32:13,707 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:32:13,707 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2018-01-31 09:32:13,707 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-31 09:32:13,707 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-31 09:32:13,708 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 09:32:13,708 INFO L87 Difference]: Start difference. First operand 253 states and 257 transitions. Second operand 33 states. [2018-01-31 09:32:14,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:14,028 INFO L93 Difference]: Finished difference Result 393 states and 401 transitions. [2018-01-31 09:32:14,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-31 09:32:14,029 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 368 [2018-01-31 09:32:14,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:14,030 INFO L225 Difference]: With dead ends: 393 [2018-01-31 09:32:14,030 INFO L226 Difference]: Without dead ends: 266 [2018-01-31 09:32:14,031 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2018-01-31 09:32:14,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-01-31 09:32:14,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 261. [2018-01-31 09:32:14,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-01-31 09:32:14,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 265 transitions. [2018-01-31 09:32:14,034 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 265 transitions. Word has length 368 [2018-01-31 09:32:14,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:14,034 INFO L432 AbstractCegarLoop]: Abstraction has 261 states and 265 transitions. [2018-01-31 09:32:14,034 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-31 09:32:14,035 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 265 transitions. [2018-01-31 09:32:14,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-01-31 09:32:14,036 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:14,036 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 09:32:14,036 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolation]=== [2018-01-31 09:32:14,036 INFO L82 PathProgramCache]: Analyzing trace with hash -902740710, now seen corresponding path program 15 times [2018-01-31 09:32:14,036 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:14,036 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:14,036 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:14,037 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:32:14,037 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:14,051 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:14,546 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 09:32:14,546 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:14,546 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:32:14,564 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:32:14,576 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:14,594 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:14,608 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:14,620 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:14,634 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:14,682 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:14,712 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:14,713 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:32:14,716 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:32:14,906 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 09:32:14,926 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:32:14,926 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 15] total 46 [2018-01-31 09:32:14,926 INFO L409 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-01-31 09:32:14,926 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-01-31 09:32:14,927 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1720, Unknown=0, NotChecked=0, Total=2070 [2018-01-31 09:32:14,927 INFO L87 Difference]: Start difference. First operand 261 states and 265 transitions. Second operand 46 states. [2018-01-31 09:32:15,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:15,646 INFO L93 Difference]: Finished difference Result 414 states and 426 transitions. [2018-01-31 09:32:15,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-01-31 09:32:15,648 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 376 [2018-01-31 09:32:15,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:15,649 INFO L225 Difference]: With dead ends: 414 [2018-01-31 09:32:15,650 INFO L226 Difference]: Without dead ends: 287 [2018-01-31 09:32:15,651 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1478 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1520, Invalid=6136, Unknown=0, NotChecked=0, Total=7656 [2018-01-31 09:32:15,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-01-31 09:32:15,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 277. [2018-01-31 09:32:15,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-01-31 09:32:15,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 281 transitions. [2018-01-31 09:32:15,659 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 281 transitions. Word has length 376 [2018-01-31 09:32:15,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:15,659 INFO L432 AbstractCegarLoop]: Abstraction has 277 states and 281 transitions. [2018-01-31 09:32:15,659 INFO L433 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-01-31 09:32:15,659 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 281 transitions. [2018-01-31 09:32:15,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-01-31 09:32:15,660 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:15,661 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 09:32:15,661 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolation]=== [2018-01-31 09:32:15,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1876280076, now seen corresponding path program 16 times [2018-01-31 09:32:15,661 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:15,661 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:15,661 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:15,661 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:32:15,661 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:15,692 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:16,423 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 09:32:16,423 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:16,423 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 09:32:16,427 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:32:16,543 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:32:16,546 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:32:16,718 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 09:32:16,735 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:32:16,735 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2018-01-31 09:32:16,736 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-31 09:32:16,736 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-31 09:32:16,736 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 09:32:16,736 INFO L87 Difference]: Start difference. First operand 277 states and 281 transitions. Second operand 37 states. [2018-01-31 09:32:17,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:17,485 INFO L93 Difference]: Finished difference Result 425 states and 433 transitions. [2018-01-31 09:32:17,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-01-31 09:32:17,486 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 408 [2018-01-31 09:32:17,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:17,487 INFO L225 Difference]: With dead ends: 425 [2018-01-31 09:32:17,487 INFO L226 Difference]: Without dead ends: 290 [2018-01-31 09:32:17,488 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2018-01-31 09:32:17,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-01-31 09:32:17,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 285. [2018-01-31 09:32:17,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-01-31 09:32:17,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 289 transitions. [2018-01-31 09:32:17,492 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 289 transitions. Word has length 408 [2018-01-31 09:32:17,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:17,492 INFO L432 AbstractCegarLoop]: Abstraction has 285 states and 289 transitions. [2018-01-31 09:32:17,492 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-31 09:32:17,492 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 289 transitions. [2018-01-31 09:32:17,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-01-31 09:32:17,493 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:17,493 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 09:32:17,493 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolation]=== [2018-01-31 09:32:17,494 INFO L82 PathProgramCache]: Analyzing trace with hash -2087512459, now seen corresponding path program 17 times [2018-01-31 09:32:17,494 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:17,494 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:17,495 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:17,495 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:32:17,495 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:17,506 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:18,493 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 09:32:18,493 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:18,493 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 09:32:18,498 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:32:18,521 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:18,534 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:18,548 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:18,551 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:18,553 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:18,555 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:18,557 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:18,560 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:18,567 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:18,572 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:18,580 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:18,590 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:18,609 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:18,680 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:18,737 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:19,002 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:19,003 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:32:19,007 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:32:19,426 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 09:32:19,443 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:32:19,444 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 17] total 52 [2018-01-31 09:32:19,444 INFO L409 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-01-31 09:32:19,444 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-01-31 09:32:19,445 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=2213, Unknown=0, NotChecked=0, Total=2652 [2018-01-31 09:32:19,445 INFO L87 Difference]: Start difference. First operand 285 states and 289 transitions. Second operand 52 states. [2018-01-31 09:32:20,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:20,214 INFO L93 Difference]: Finished difference Result 446 states and 458 transitions. [2018-01-31 09:32:20,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-01-31 09:32:20,214 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 416 [2018-01-31 09:32:20,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:20,215 INFO L225 Difference]: With dead ends: 446 [2018-01-31 09:32:20,215 INFO L226 Difference]: Without dead ends: 311 [2018-01-31 09:32:20,217 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1937 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1935, Invalid=7965, Unknown=0, NotChecked=0, Total=9900 [2018-01-31 09:32:20,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-01-31 09:32:20,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 301. [2018-01-31 09:32:20,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-01-31 09:32:20,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 305 transitions. [2018-01-31 09:32:20,221 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 305 transitions. Word has length 416 [2018-01-31 09:32:20,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:20,221 INFO L432 AbstractCegarLoop]: Abstraction has 301 states and 305 transitions. [2018-01-31 09:32:20,221 INFO L433 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-01-31 09:32:20,221 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 305 transitions. [2018-01-31 09:32:20,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-01-31 09:32:20,222 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:20,222 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 09:32:20,223 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolation]=== [2018-01-31 09:32:20,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1829366169, now seen corresponding path program 18 times [2018-01-31 09:32:20,223 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:20,223 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:20,223 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:20,223 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:32:20,223 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:20,235 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:20,989 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 09:32:20,989 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:20,989 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 09:32:20,994 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:32:21,009 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:21,011 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:21,014 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:21,017 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:21,022 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:21,041 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:21,061 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:21,090 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:21,128 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:21,200 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:21,311 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:21,467 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:21,543 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:21,545 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:32:21,549 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:32:21,782 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 09:32:21,800 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:32:21,800 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 13] total 50 [2018-01-31 09:32:21,801 INFO L409 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-01-31 09:32:21,801 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-01-31 09:32:21,801 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=446, Invalid=2004, Unknown=0, NotChecked=0, Total=2450 [2018-01-31 09:32:21,801 INFO L87 Difference]: Start difference. First operand 301 states and 305 transitions. Second operand 50 states. [2018-01-31 09:32:22,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:22,530 INFO L93 Difference]: Finished difference Result 470 states and 479 transitions. [2018-01-31 09:32:22,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-01-31 09:32:22,532 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 448 [2018-01-31 09:32:22,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:22,533 INFO L225 Difference]: With dead ends: 470 [2018-01-31 09:32:22,533 INFO L226 Difference]: Without dead ends: 327 [2018-01-31 09:32:22,534 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1746 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1980, Invalid=7140, Unknown=0, NotChecked=0, Total=9120 [2018-01-31 09:32:22,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-01-31 09:32:22,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 317. [2018-01-31 09:32:22,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-01-31 09:32:22,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 321 transitions. [2018-01-31 09:32:22,537 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 321 transitions. Word has length 448 [2018-01-31 09:32:22,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:22,538 INFO L432 AbstractCegarLoop]: Abstraction has 317 states and 321 transitions. [2018-01-31 09:32:22,538 INFO L433 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-01-31 09:32:22,538 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 321 transitions. [2018-01-31 09:32:22,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2018-01-31 09:32:22,539 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:22,539 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 09:32:22,539 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr0AssertViolation]=== [2018-01-31 09:32:22,540 INFO L82 PathProgramCache]: Analyzing trace with hash 8692295, now seen corresponding path program 19 times [2018-01-31 09:32:22,540 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:22,540 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:22,540 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:22,540 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:32:22,540 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:22,552 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:23,456 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 09:32:23,456 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:23,456 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 09:32:23,460 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:32:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:23,519 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:32:23,916 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 09:32:23,935 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:32:23,935 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2018-01-31 09:32:23,936 INFO L409 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-01-31 09:32:23,936 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-01-31 09:32:23,936 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2018-01-31 09:32:23,936 INFO L87 Difference]: Start difference. First operand 317 states and 321 transitions. Second operand 43 states. [2018-01-31 09:32:24,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:24,434 INFO L93 Difference]: Finished difference Result 481 states and 489 transitions. [2018-01-31 09:32:24,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-01-31 09:32:24,434 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 464 [2018-01-31 09:32:24,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:24,435 INFO L225 Difference]: With dead ends: 481 [2018-01-31 09:32:24,435 INFO L226 Difference]: Without dead ends: 330 [2018-01-31 09:32:24,436 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2018-01-31 09:32:24,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2018-01-31 09:32:24,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 325. [2018-01-31 09:32:24,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-01-31 09:32:24,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 329 transitions. [2018-01-31 09:32:24,439 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 329 transitions. Word has length 464 [2018-01-31 09:32:24,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:24,439 INFO L432 AbstractCegarLoop]: Abstraction has 325 states and 329 transitions. [2018-01-31 09:32:24,439 INFO L433 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-01-31 09:32:24,440 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 329 transitions. [2018-01-31 09:32:24,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2018-01-31 09:32:24,441 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:24,441 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 09:32:24,441 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr0AssertViolation]=== [2018-01-31 09:32:24,441 INFO L82 PathProgramCache]: Analyzing trace with hash 568633008, now seen corresponding path program 20 times [2018-01-31 09:32:24,441 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:24,442 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:24,442 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:24,442 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:32:24,442 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:24,455 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:25,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4074 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 2514 trivial. 0 not checked. [2018-01-31 09:32:25,310 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:25,310 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 09:32:25,319 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:32:25,336 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:25,371 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:25,376 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:32:25,379 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:32:25,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4074 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 2514 trivial. 0 not checked. [2018-01-31 09:32:25,577 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:32:25,577 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2018-01-31 09:32:25,577 INFO L409 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-01-31 09:32:25,578 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-01-31 09:32:25,578 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2018-01-31 09:32:25,578 INFO L87 Difference]: Start difference. First operand 325 states and 329 transitions. Second operand 45 states. [2018-01-31 09:32:26,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:26,070 INFO L93 Difference]: Finished difference Result 489 states and 497 transitions. [2018-01-31 09:32:26,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-01-31 09:32:26,070 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 472 [2018-01-31 09:32:26,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:26,071 INFO L225 Difference]: With dead ends: 489 [2018-01-31 09:32:26,071 INFO L226 Difference]: Without dead ends: 338 [2018-01-31 09:32:26,072 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2251, Invalid=4889, Unknown=0, NotChecked=0, Total=7140 [2018-01-31 09:32:26,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-01-31 09:32:26,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 333. [2018-01-31 09:32:26,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-01-31 09:32:26,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 337 transitions. [2018-01-31 09:32:26,076 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 337 transitions. Word has length 472 [2018-01-31 09:32:26,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:26,076 INFO L432 AbstractCegarLoop]: Abstraction has 333 states and 337 transitions. [2018-01-31 09:32:26,076 INFO L433 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-01-31 09:32:26,076 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 337 transitions. [2018-01-31 09:32:26,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2018-01-31 09:32:26,078 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:26,078 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 24, 24, 24, 22, 21, 21, 21, 21, 21, 21, 21, 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 09:32:26,078 INFO L371 AbstractCegarLoop]: === Iteration 25 === [mainErr0AssertViolation]=== [2018-01-31 09:32:26,078 INFO L82 PathProgramCache]: Analyzing trace with hash -988663271, now seen corresponding path program 21 times [2018-01-31 09:32:26,078 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:26,078 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:26,078 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:26,079 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:32:26,079 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:26,091 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:26,948 INFO L134 CoverageAnalysis]: Checked inductivity of 4236 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 2514 trivial. 0 not checked. [2018-01-31 09:32:26,948 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:26,949 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:32:26,954 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:32:26,969 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:26,973 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:26,978 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:26,985 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:26,996 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:27,017 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:27,042 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:27,075 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:27,077 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:32:27,080 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:32:27,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4236 backedges. 1108 proven. 132 refuted. 0 times theorem prover too weak. 2996 trivial. 0 not checked. [2018-01-31 09:32:27,479 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:32:27,479 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 15] total 58 [2018-01-31 09:32:27,479 INFO L409 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-01-31 09:32:27,479 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-01-31 09:32:27,479 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=590, Invalid=2716, Unknown=0, NotChecked=0, Total=3306 [2018-01-31 09:32:27,480 INFO L87 Difference]: Start difference. First operand 333 states and 337 transitions. Second operand 58 states. [2018-01-31 09:32:28,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:28,579 INFO L93 Difference]: Finished difference Result 510 states and 519 transitions. [2018-01-31 09:32:28,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-01-31 09:32:28,586 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 480 [2018-01-31 09:32:28,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:28,587 INFO L225 Difference]: With dead ends: 510 [2018-01-31 09:32:28,587 INFO L226 Difference]: Without dead ends: 359 [2018-01-31 09:32:28,588 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2660, Invalid=9772, Unknown=0, NotChecked=0, Total=12432 [2018-01-31 09:32:28,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-01-31 09:32:28,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 349. [2018-01-31 09:32:28,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-01-31 09:32:28,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 353 transitions. [2018-01-31 09:32:28,591 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 353 transitions. Word has length 480 [2018-01-31 09:32:28,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:28,592 INFO L432 AbstractCegarLoop]: Abstraction has 349 states and 353 transitions. [2018-01-31 09:32:28,592 INFO L433 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-01-31 09:32:28,592 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 353 transitions. [2018-01-31 09:32:28,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2018-01-31 09:32:28,593 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:28,593 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 24, 24, 24, 23, 22, 22, 22, 22, 22, 22, 22, 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 09:32:28,594 INFO L371 AbstractCegarLoop]: === Iteration 26 === [mainErr0AssertViolation]=== [2018-01-31 09:32:28,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1848838137, now seen corresponding path program 22 times [2018-01-31 09:32:28,594 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:28,594 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:28,594 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:28,594 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:32:28,594 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:28,627 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:29,660 INFO L134 CoverageAnalysis]: Checked inductivity of 4456 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 2564 trivial. 0 not checked. [2018-01-31 09:32:29,660 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:29,660 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:32:29,666 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:32:29,990 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:32:29,994 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:32:30,097 INFO L134 CoverageAnalysis]: Checked inductivity of 4456 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 2564 trivial. 0 not checked. [2018-01-31 09:32:30,118 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:32:30,118 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2018-01-31 09:32:30,118 INFO L409 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-01-31 09:32:30,118 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-01-31 09:32:30,118 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2018-01-31 09:32:30,119 INFO L87 Difference]: Start difference. First operand 349 states and 353 transitions. Second operand 49 states. [2018-01-31 09:32:30,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:30,756 INFO L93 Difference]: Finished difference Result 521 states and 529 transitions. [2018-01-31 09:32:30,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-01-31 09:32:30,757 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 496 [2018-01-31 09:32:30,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:30,758 INFO L225 Difference]: With dead ends: 521 [2018-01-31 09:32:30,758 INFO L226 Difference]: Without dead ends: 362 [2018-01-31 09:32:30,759 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1616 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2695, Invalid=5861, Unknown=0, NotChecked=0, Total=8556 [2018-01-31 09:32:30,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2018-01-31 09:32:30,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 357. [2018-01-31 09:32:30,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-01-31 09:32:30,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 361 transitions. [2018-01-31 09:32:30,764 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 361 transitions. Word has length 496 [2018-01-31 09:32:30,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:30,764 INFO L432 AbstractCegarLoop]: Abstraction has 357 states and 361 transitions. [2018-01-31 09:32:30,764 INFO L433 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-01-31 09:32:30,764 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 361 transitions. [2018-01-31 09:32:30,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2018-01-31 09:32:30,766 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:30,766 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 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 09:32:30,766 INFO L371 AbstractCegarLoop]: === Iteration 27 === [mainErr0AssertViolation]=== [2018-01-31 09:32:30,766 INFO L82 PathProgramCache]: Analyzing trace with hash 201271394, now seen corresponding path program 23 times [2018-01-31 09:32:30,766 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:30,766 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:30,766 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:30,767 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:32:30,767 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:30,780 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:32,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4634 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 2564 trivial. 0 not checked. [2018-01-31 09:32:32,132 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:32,132 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 09:32:32,148 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:32:32,160 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:32,169 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:32,178 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:32,183 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:32,185 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:32,187 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:32,189 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:32,192 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:32,196 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:32,200 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:32,208 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:32,212 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:32,221 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:32,227 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:32,239 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:32,249 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:32,278 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:32,459 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:32,679 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:33,277 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:34,695 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:36,898 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:36,901 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:32:36,908 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:32:37,258 INFO L134 CoverageAnalysis]: Checked inductivity of 4634 backedges. 1102 proven. 240 refuted. 0 times theorem prover too weak. 3292 trivial. 0 not checked. [2018-01-31 09:32:37,278 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:32:37,278 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 19] total 66 [2018-01-31 09:32:37,279 INFO L409 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-01-31 09:32:37,279 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-01-31 09:32:37,279 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=722, Invalid=3568, Unknown=0, NotChecked=0, Total=4290 [2018-01-31 09:32:37,279 INFO L87 Difference]: Start difference. First operand 357 states and 361 transitions. Second operand 66 states. [2018-01-31 09:32:38,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:38,786 INFO L93 Difference]: Finished difference Result 542 states and 554 transitions. [2018-01-31 09:32:38,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-01-31 09:32:38,787 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 504 [2018-01-31 09:32:38,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:38,788 INFO L225 Difference]: With dead ends: 542 [2018-01-31 09:32:38,788 INFO L226 Difference]: Without dead ends: 383 [2018-01-31 09:32:38,790 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3218 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3280, Invalid=12976, Unknown=0, NotChecked=0, Total=16256 [2018-01-31 09:32:38,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-01-31 09:32:38,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 373. [2018-01-31 09:32:38,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-01-31 09:32:38,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 377 transitions. [2018-01-31 09:32:38,804 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 377 transitions. Word has length 504 [2018-01-31 09:32:38,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:38,804 INFO L432 AbstractCegarLoop]: Abstraction has 373 states and 377 transitions. [2018-01-31 09:32:38,804 INFO L433 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-01-31 09:32:38,804 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 377 transitions. [2018-01-31 09:32:38,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2018-01-31 09:32:38,806 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:38,806 INFO L351 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 27, 25, 24, 24, 24, 24, 24, 24, 24, 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 09:32:38,806 INFO L371 AbstractCegarLoop]: === Iteration 28 === [mainErr0AssertViolation]=== [2018-01-31 09:32:38,806 INFO L82 PathProgramCache]: Analyzing trace with hash -125265324, now seen corresponding path program 24 times [2018-01-31 09:32:38,806 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:38,806 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:38,807 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:38,807 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:32:38,814 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:38,837 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:39,946 INFO L134 CoverageAnalysis]: Checked inductivity of 5438 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 3182 trivial. 0 not checked. [2018-01-31 09:32:39,946 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:39,946 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 09:32:39,951 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:32:39,966 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:39,978 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:39,987 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:39,990 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:39,995 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:40,016 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:40,024 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:40,083 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:40,179 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:40,228 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:40,465 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:40,556 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:41,126 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:41,452 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:41,849 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:42,468 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:42,754 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:32:42,757 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:32:42,763 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:32:43,090 INFO L134 CoverageAnalysis]: Checked inductivity of 5438 backedges. 1388 proven. 182 refuted. 0 times theorem prover too weak. 3868 trivial. 0 not checked. [2018-01-31 09:32:43,108 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:32:43,108 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 17] total 66 [2018-01-31 09:32:43,109 INFO L409 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-01-31 09:32:43,109 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-01-31 09:32:43,109 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=754, Invalid=3536, Unknown=0, NotChecked=0, Total=4290 [2018-01-31 09:32:43,109 INFO L87 Difference]: Start difference. First operand 373 states and 377 transitions. Second operand 66 states. [2018-01-31 09:32:45,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:45,466 INFO L93 Difference]: Finished difference Result 566 states and 575 transitions. [2018-01-31 09:32:45,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-01-31 09:32:45,466 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 536 [2018-01-31 09:32:45,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:45,467 INFO L225 Difference]: With dead ends: 566 [2018-01-31 09:32:45,467 INFO L226 Difference]: Without dead ends: 399 [2018-01-31 09:32:45,468 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3190 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3440, Invalid=12816, Unknown=0, NotChecked=0, Total=16256 [2018-01-31 09:32:45,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-01-31 09:32:45,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 389. [2018-01-31 09:32:45,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-01-31 09:32:45,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 393 transitions. [2018-01-31 09:32:45,472 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 393 transitions. Word has length 536 [2018-01-31 09:32:45,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:45,472 INFO L432 AbstractCegarLoop]: Abstraction has 389 states and 393 transitions. [2018-01-31 09:32:45,472 INFO L433 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-01-31 09:32:45,472 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 393 transitions. [2018-01-31 09:32:45,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2018-01-31 09:32:45,474 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:45,474 INFO L351 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 27, 26, 25, 25, 25, 25, 25, 25, 25, 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 09:32:45,474 INFO L371 AbstractCegarLoop]: === Iteration 29 === [mainErr0AssertViolation]=== [2018-01-31 09:32:45,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1439991860, now seen corresponding path program 25 times [2018-01-31 09:32:45,474 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:45,474 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:45,475 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:45,475 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:32:45,475 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:45,488 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:46,647 INFO L134 CoverageAnalysis]: Checked inductivity of 5690 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 3240 trivial. 0 not checked. [2018-01-31 09:32:46,647 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:46,647 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 09:32:46,652 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:32:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:46,704 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:32:46,811 INFO L134 CoverageAnalysis]: Checked inductivity of 5690 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 3240 trivial. 0 not checked. [2018-01-31 09:32:46,828 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:32:46,828 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 55 [2018-01-31 09:32:46,828 INFO L409 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-01-31 09:32:46,829 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-01-31 09:32:46,829 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=2187, Unknown=0, NotChecked=0, Total=2970 [2018-01-31 09:32:46,829 INFO L87 Difference]: Start difference. First operand 389 states and 393 transitions. Second operand 55 states. [2018-01-31 09:32:47,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:47,563 INFO L93 Difference]: Finished difference Result 577 states and 585 transitions. [2018-01-31 09:32:47,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-01-31 09:32:47,564 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 552 [2018-01-31 09:32:47,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:47,565 INFO L225 Difference]: With dead ends: 577 [2018-01-31 09:32:47,565 INFO L226 Difference]: Without dead ends: 402 [2018-01-31 09:32:47,566 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2063 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=3436, Invalid=7484, Unknown=0, NotChecked=0, Total=10920 [2018-01-31 09:32:47,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2018-01-31 09:32:47,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 397. [2018-01-31 09:32:47,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-01-31 09:32:47,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 401 transitions. [2018-01-31 09:32:47,569 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 401 transitions. Word has length 552 [2018-01-31 09:32:47,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:47,569 INFO L432 AbstractCegarLoop]: Abstraction has 397 states and 401 transitions. [2018-01-31 09:32:47,569 INFO L433 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-01-31 09:32:47,569 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 401 transitions. [2018-01-31 09:32:47,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2018-01-31 09:32:47,571 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:47,571 INFO L351 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 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 09:32:47,572 INFO L371 AbstractCegarLoop]: === Iteration 30 === [mainErr0AssertViolation]=== [2018-01-31 09:32:47,572 INFO L82 PathProgramCache]: Analyzing trace with hash 175659421, now seen corresponding path program 26 times [2018-01-31 09:32:47,572 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:47,572 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:47,572 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:47,572 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:32:47,572 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:47,585 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:48,843 INFO L134 CoverageAnalysis]: Checked inductivity of 5892 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 3240 trivial. 0 not checked. [2018-01-31 09:32:48,843 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:48,844 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 09:32:48,850 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:32:48,865 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:48,898 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:48,904 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:32:48,908 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:32:49,018 INFO L134 CoverageAnalysis]: Checked inductivity of 5892 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 3240 trivial. 0 not checked. [2018-01-31 09:32:49,035 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:32:49,035 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 57 [2018-01-31 09:32:49,036 INFO L409 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-01-31 09:32:49,036 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-01-31 09:32:49,036 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=840, Invalid=2352, Unknown=0, NotChecked=0, Total=3192 [2018-01-31 09:32:49,036 INFO L87 Difference]: Start difference. First operand 397 states and 401 transitions. Second operand 57 states. [2018-01-31 09:32:49,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:49,824 INFO L93 Difference]: Finished difference Result 585 states and 593 transitions. [2018-01-31 09:32:49,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-01-31 09:32:49,825 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 560 [2018-01-31 09:32:49,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:49,825 INFO L225 Difference]: With dead ends: 585 [2018-01-31 09:32:49,826 INFO L226 Difference]: Without dead ends: 410 [2018-01-31 09:32:49,826 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 559 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2224 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3703, Invalid=8069, Unknown=0, NotChecked=0, Total=11772 [2018-01-31 09:32:49,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2018-01-31 09:32:49,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 405. [2018-01-31 09:32:49,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2018-01-31 09:32:49,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 409 transitions. [2018-01-31 09:32:49,830 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 409 transitions. Word has length 560 [2018-01-31 09:32:49,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:49,830 INFO L432 AbstractCegarLoop]: Abstraction has 405 states and 409 transitions. [2018-01-31 09:32:49,830 INFO L433 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-01-31 09:32:49,830 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 409 transitions. [2018-01-31 09:32:49,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2018-01-31 09:32:49,832 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:49,833 INFO L351 BasicCegarLoop]: trace histogram [30, 28, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 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 09:32:49,833 INFO L371 AbstractCegarLoop]: === Iteration 31 === [mainErr0AssertViolation]=== [2018-01-31 09:32:49,833 INFO L82 PathProgramCache]: Analyzing trace with hash 449622534, now seen corresponding path program 27 times [2018-01-31 09:32:49,833 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:49,833 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:49,833 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:49,833 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:32:49,833 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:49,847 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:51,153 INFO L134 CoverageAnalysis]: Checked inductivity of 6102 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 3240 trivial. 0 not checked. [2018-01-31 09:32:51,153 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:51,154 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 09:32:51,158 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:32:51,174 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:51,177 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:51,183 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:51,194 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:51,207 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:51,248 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:51,265 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:51,326 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:51,393 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:51,425 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:32:51,427 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:32:51,432 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:32:51,856 INFO L134 CoverageAnalysis]: Checked inductivity of 6102 backedges. 1598 proven. 240 refuted. 0 times theorem prover too weak. 4264 trivial. 0 not checked. [2018-01-31 09:32:51,874 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:32:51,874 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 22] total 77 [2018-01-31 09:32:51,874 INFO L409 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-01-31 09:32:51,875 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-01-31 09:32:51,875 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1028, Invalid=4824, Unknown=0, NotChecked=0, Total=5852 [2018-01-31 09:32:51,875 INFO L87 Difference]: Start difference. First operand 405 states and 409 transitions. Second operand 77 states. [2018-01-31 09:32:54,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:54,182 INFO L93 Difference]: Finished difference Result 606 states and 615 transitions. [2018-01-31 09:32:54,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-01-31 09:32:54,182 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 568 [2018-01-31 09:32:54,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:54,183 INFO L225 Difference]: With dead ends: 606 [2018-01-31 09:32:54,183 INFO L226 Difference]: Without dead ends: 431 [2018-01-31 09:32:54,185 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5139 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4956, Invalid=20166, Unknown=0, NotChecked=0, Total=25122 [2018-01-31 09:32:54,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-01-31 09:32:54,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 421. [2018-01-31 09:32:54,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-01-31 09:32:54,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 425 transitions. [2018-01-31 09:32:54,195 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 425 transitions. Word has length 568 [2018-01-31 09:32:54,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:54,196 INFO L432 AbstractCegarLoop]: Abstraction has 421 states and 425 transitions. [2018-01-31 09:32:54,196 INFO L433 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-01-31 09:32:54,196 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 425 transitions. [2018-01-31 09:32:54,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2018-01-31 09:32:54,198 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:54,198 INFO L351 BasicCegarLoop]: trace histogram [30, 29, 28, 28, 28, 28, 28, 28, 28, 27, 27, 27, 27, 27, 27, 27, 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 09:32:54,198 INFO L371 AbstractCegarLoop]: === Iteration 32 === [mainErr0AssertViolation]=== [2018-01-31 09:32:54,198 INFO L82 PathProgramCache]: Analyzing trace with hash 997911014, now seen corresponding path program 28 times [2018-01-31 09:32:54,198 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:54,198 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:54,199 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:54,199 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:32:54,199 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:54,215 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:55,661 INFO L134 CoverageAnalysis]: Checked inductivity of 6386 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2018-01-31 09:32:55,662 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:55,662 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 09:32:55,666 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:32:56,205 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:32:56,211 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:32:56,350 INFO L134 CoverageAnalysis]: Checked inductivity of 6386 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2018-01-31 09:32:56,370 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:32:56,370 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 61 [2018-01-31 09:32:56,371 INFO L409 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-01-31 09:32:56,371 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-01-31 09:32:56,371 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2018-01-31 09:32:56,372 INFO L87 Difference]: Start difference. First operand 421 states and 425 transitions. Second operand 61 states. [2018-01-31 09:32:57,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:32:57,314 INFO L93 Difference]: Finished difference Result 617 states and 625 transitions. [2018-01-31 09:32:57,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-01-31 09:32:57,314 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 584 [2018-01-31 09:32:57,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:32:57,315 INFO L225 Difference]: With dead ends: 617 [2018-01-31 09:32:57,315 INFO L226 Difference]: Without dead ends: 434 [2018-01-31 09:32:57,316 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 583 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2564 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=4267, Invalid=9305, Unknown=0, NotChecked=0, Total=13572 [2018-01-31 09:32:57,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-01-31 09:32:57,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 429. [2018-01-31 09:32:57,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2018-01-31 09:32:57,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 433 transitions. [2018-01-31 09:32:57,320 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 433 transitions. Word has length 584 [2018-01-31 09:32:57,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:32:57,321 INFO L432 AbstractCegarLoop]: Abstraction has 429 states and 433 transitions. [2018-01-31 09:32:57,321 INFO L433 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-01-31 09:32:57,321 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 433 transitions. [2018-01-31 09:32:57,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2018-01-31 09:32:57,323 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:32:57,323 INFO L351 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 29, 29, 27, 27, 27, 27, 27, 27, 27, 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 09:32:57,323 INFO L371 AbstractCegarLoop]: === Iteration 33 === [mainErr0AssertViolation]=== [2018-01-31 09:32:57,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1645664079, now seen corresponding path program 29 times [2018-01-31 09:32:57,323 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:32:57,323 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:32:57,324 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:57,324 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:32:57,324 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:32:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:32:57,338 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:32:58,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2018-01-31 09:32:58,831 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:32:58,831 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 09:32:58,836 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:32:58,850 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:58,851 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:58,852 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:58,854 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:58,855 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:58,857 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:58,859 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:58,861 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:58,864 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:58,867 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:58,871 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:58,877 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:58,883 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:58,899 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:58,907 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:58,916 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:58,938 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:58,959 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:58,983 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:58,995 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:59,036 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:59,432 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:59,682 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:32:59,912 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:00,552 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:02,779 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:04,742 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:06,553 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:06,556 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:33:06,566 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:33:07,009 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 1382 proven. 306 refuted. 0 times theorem prover too weak. 4924 trivial. 0 not checked. [2018-01-31 09:33:07,030 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:33:07,030 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 21] total 80 [2018-01-31 09:33:07,030 INFO L409 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-01-31 09:33:07,031 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-01-31 09:33:07,031 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1079, Invalid=5241, Unknown=0, NotChecked=0, Total=6320 [2018-01-31 09:33:07,031 INFO L87 Difference]: Start difference. First operand 429 states and 433 transitions. Second operand 80 states. [2018-01-31 09:33:08,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:33:08,853 INFO L93 Difference]: Finished difference Result 638 states and 650 transitions. [2018-01-31 09:33:08,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-01-31 09:33:08,860 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 592 [2018-01-31 09:33:08,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:33:08,861 INFO L225 Difference]: With dead ends: 638 [2018-01-31 09:33:08,861 INFO L226 Difference]: Without dead ends: 455 [2018-01-31 09:33:08,863 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 574 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4817 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4995, Invalid=19185, Unknown=0, NotChecked=0, Total=24180 [2018-01-31 09:33:08,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2018-01-31 09:33:08,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 445. [2018-01-31 09:33:08,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2018-01-31 09:33:08,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 449 transitions. [2018-01-31 09:33:08,866 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 449 transitions. Word has length 592 [2018-01-31 09:33:08,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:33:08,867 INFO L432 AbstractCegarLoop]: Abstraction has 445 states and 449 transitions. [2018-01-31 09:33:08,867 INFO L433 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-01-31 09:33:08,867 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 449 transitions. [2018-01-31 09:33:08,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2018-01-31 09:33:08,869 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:33:08,869 INFO L351 BasicCegarLoop]: trace histogram [33, 31, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 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 09:33:08,869 INFO L371 AbstractCegarLoop]: === Iteration 34 === [mainErr0AssertViolation]=== [2018-01-31 09:33:08,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1308837055, now seen corresponding path program 30 times [2018-01-31 09:33:08,869 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:33:08,869 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:33:08,870 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:33:08,870 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:33:08,870 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:33:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:33:08,884 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:33:10,530 INFO L134 CoverageAnalysis]: Checked inductivity of 7536 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 3996 trivial. 0 not checked. [2018-01-31 09:33:10,530 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:33:10,530 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 09:33:10,534 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:33:10,551 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:33:10,553 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:33:10,556 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:33:10,559 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:33:10,564 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:33:10,575 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:33:10,595 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:33:10,609 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:33:10,654 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:33:10,681 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:33:10,710 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:33:10,803 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:33:10,836 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:33:10,899 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:33:11,051 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:33:11,247 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:33:11,311 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:33:11,664 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:33:11,779 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:33:12,494 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:33:13,870 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:33:13,874 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:33:13,881 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:33:14,404 INFO L134 CoverageAnalysis]: Checked inductivity of 7536 backedges. 1934 proven. 306 refuted. 0 times theorem prover too weak. 5296 trivial. 0 not checked. [2018-01-31 09:33:14,426 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:33:14,426 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 24] total 85 [2018-01-31 09:33:14,427 INFO L409 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-01-31 09:33:14,427 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-01-31 09:33:14,427 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1241, Invalid=5899, Unknown=0, NotChecked=0, Total=7140 [2018-01-31 09:33:14,427 INFO L87 Difference]: Start difference. First operand 445 states and 449 transitions. Second operand 85 states. [2018-01-31 09:33:16,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:33:16,607 INFO L93 Difference]: Finished difference Result 662 states and 671 transitions. [2018-01-31 09:33:16,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-01-31 09:33:16,607 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 624 [2018-01-31 09:33:16,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:33:16,608 INFO L225 Difference]: With dead ends: 662 [2018-01-31 09:33:16,608 INFO L226 Difference]: Without dead ends: 471 [2018-01-31 09:33:16,611 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 603 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6340 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=6024, Invalid=24776, Unknown=0, NotChecked=0, Total=30800 [2018-01-31 09:33:16,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2018-01-31 09:33:16,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 461. [2018-01-31 09:33:16,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-01-31 09:33:16,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 465 transitions. [2018-01-31 09:33:16,615 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 465 transitions. Word has length 624 [2018-01-31 09:33:16,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:33:16,615 INFO L432 AbstractCegarLoop]: Abstraction has 461 states and 465 transitions. [2018-01-31 09:33:16,615 INFO L433 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-01-31 09:33:16,615 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 465 transitions. [2018-01-31 09:33:16,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2018-01-31 09:33:16,617 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:33:16,618 INFO L351 BasicCegarLoop]: trace histogram [33, 32, 31, 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 30, 30, 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 09:33:16,618 INFO L371 AbstractCegarLoop]: === Iteration 35 === [mainErr0AssertViolation]=== [2018-01-31 09:33:16,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1307052833, now seen corresponding path program 31 times [2018-01-31 09:33:16,618 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:33:16,618 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:33:16,618 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:33:16,618 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:33:16,618 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:33:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:33:16,634 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:33:18,558 INFO L134 CoverageAnalysis]: Checked inductivity of 7852 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-31 09:33:18,558 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:33:18,559 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:33:18,564 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:33:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:33:18,628 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:33:18,799 INFO L134 CoverageAnalysis]: Checked inductivity of 7852 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-31 09:33:18,816 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:33:18,816 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 67 [2018-01-31 09:33:18,817 INFO L409 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-01-31 09:33:18,817 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-01-31 09:33:18,817 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=3267, Unknown=0, NotChecked=0, Total=4422 [2018-01-31 09:33:18,817 INFO L87 Difference]: Start difference. First operand 461 states and 465 transitions. Second operand 67 states. [2018-01-31 09:33:19,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:33:19,931 INFO L93 Difference]: Finished difference Result 673 states and 681 transitions. [2018-01-31 09:33:19,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-01-31 09:33:19,932 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 640 [2018-01-31 09:33:19,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:33:19,933 INFO L225 Difference]: With dead ends: 673 [2018-01-31 09:33:19,933 INFO L226 Difference]: Without dead ends: 474 [2018-01-31 09:33:19,934 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3119 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=5188, Invalid=11324, Unknown=0, NotChecked=0, Total=16512 [2018-01-31 09:33:19,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2018-01-31 09:33:19,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 469. [2018-01-31 09:33:19,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2018-01-31 09:33:19,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 473 transitions. [2018-01-31 09:33:19,945 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 473 transitions. Word has length 640 [2018-01-31 09:33:19,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:33:19,945 INFO L432 AbstractCegarLoop]: Abstraction has 469 states and 473 transitions. [2018-01-31 09:33:19,945 INFO L433 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-01-31 09:33:19,945 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 473 transitions. [2018-01-31 09:33:19,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2018-01-31 09:33:19,948 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:33:19,948 INFO L351 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 32, 32, 30, 30, 30, 30, 30, 30, 30, 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 09:33:19,948 INFO L371 AbstractCegarLoop]: === Iteration 36 === [mainErr0AssertViolation]=== [2018-01-31 09:33:19,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1569761674, now seen corresponding path program 32 times [2018-01-31 09:33:19,948 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:33:19,948 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:33:19,949 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:33:19,949 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:33:19,949 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:33:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:33:19,965 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:33:21,801 INFO L134 CoverageAnalysis]: Checked inductivity of 8102 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-31 09:33:21,802 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:33:21,802 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 09:33:21,806 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:33:21,823 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:21,859 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:21,866 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:33:21,870 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:33:22,015 INFO L134 CoverageAnalysis]: Checked inductivity of 8102 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-31 09:33:22,032 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:33:22,032 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 69 [2018-01-31 09:33:22,033 INFO L409 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-01-31 09:33:22,033 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-01-31 09:33:22,033 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1224, Invalid=3468, Unknown=0, NotChecked=0, Total=4692 [2018-01-31 09:33:22,033 INFO L87 Difference]: Start difference. First operand 469 states and 473 transitions. Second operand 69 states. [2018-01-31 09:33:23,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:33:23,215 INFO L93 Difference]: Finished difference Result 681 states and 689 transitions. [2018-01-31 09:33:23,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-01-31 09:33:23,227 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 648 [2018-01-31 09:33:23,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:33:23,229 INFO L225 Difference]: With dead ends: 681 [2018-01-31 09:33:23,229 INFO L226 Difference]: Without dead ends: 482 [2018-01-31 09:33:23,230 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 778 GetRequests, 647 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3316 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=5515, Invalid=12041, Unknown=0, NotChecked=0, Total=17556 [2018-01-31 09:33:23,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2018-01-31 09:33:23,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 477. [2018-01-31 09:33:23,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2018-01-31 09:33:23,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 481 transitions. [2018-01-31 09:33:23,234 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 481 transitions. Word has length 648 [2018-01-31 09:33:23,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:33:23,235 INFO L432 AbstractCegarLoop]: Abstraction has 477 states and 481 transitions. [2018-01-31 09:33:23,235 INFO L433 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-01-31 09:33:23,235 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 481 transitions. [2018-01-31 09:33:23,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2018-01-31 09:33:23,239 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:33:23,239 INFO L351 BasicCegarLoop]: trace histogram [34, 33, 33, 33, 33, 33, 33, 33, 33, 30, 30, 30, 30, 30, 30, 30, 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 09:33:23,239 INFO L371 AbstractCegarLoop]: === Iteration 37 === [mainErr0AssertViolation]=== [2018-01-31 09:33:23,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1372376819, now seen corresponding path program 33 times [2018-01-31 09:33:23,240 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:33:23,240 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:33:23,240 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:33:23,240 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:33:23,240 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:33:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:33:23,257 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:33:25,220 INFO L134 CoverageAnalysis]: Checked inductivity of 8360 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-31 09:33:25,220 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:33:25,220 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 09:33:25,225 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:33:25,241 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:33:25,245 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:33:25,250 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:33:25,257 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:33:25,269 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:33:25,308 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:33:25,337 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:33:25,390 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:33:25,562 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:33:25,707 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:33:25,816 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:33:25,818 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:33:25,823 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:33:26,330 INFO L134 CoverageAnalysis]: Checked inductivity of 8360 backedges. 1690 proven. 380 refuted. 0 times theorem prover too weak. 6290 trivial. 0 not checked. [2018-01-31 09:33:26,348 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:33:26,348 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 23] total 90 [2018-01-31 09:33:26,349 INFO L409 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-01-31 09:33:26,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-01-31 09:33:26,349 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1366, Invalid=6644, Unknown=0, NotChecked=0, Total=8010 [2018-01-31 09:33:26,350 INFO L87 Difference]: Start difference. First operand 477 states and 481 transitions. Second operand 90 states. [2018-01-31 09:33:28,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:33:28,483 INFO L93 Difference]: Finished difference Result 702 states and 714 transitions. [2018-01-31 09:33:28,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-01-31 09:33:28,497 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 656 [2018-01-31 09:33:28,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:33:28,498 INFO L225 Difference]: With dead ends: 702 [2018-01-31 09:33:28,498 INFO L226 Difference]: Without dead ends: 503 [2018-01-31 09:33:28,500 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 636 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6166 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=6380, Invalid=24420, Unknown=0, NotChecked=0, Total=30800 [2018-01-31 09:33:28,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2018-01-31 09:33:28,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 493. [2018-01-31 09:33:28,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2018-01-31 09:33:28,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 497 transitions. [2018-01-31 09:33:28,510 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 497 transitions. Word has length 656 [2018-01-31 09:33:28,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:33:28,511 INFO L432 AbstractCegarLoop]: Abstraction has 493 states and 497 transitions. [2018-01-31 09:33:28,511 INFO L433 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-01-31 09:33:28,511 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 497 transitions. [2018-01-31 09:33:28,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2018-01-31 09:33:28,513 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:33:28,514 INFO L351 BasicCegarLoop]: trace histogram [36, 35, 34, 34, 34, 34, 34, 34, 34, 33, 33, 33, 33, 33, 33, 33, 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 09:33:28,514 INFO L371 AbstractCegarLoop]: === Iteration 38 === [mainErr0AssertViolation]=== [2018-01-31 09:33:28,515 INFO L82 PathProgramCache]: Analyzing trace with hash 669789413, now seen corresponding path program 34 times [2018-01-31 09:33:28,515 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:33:28,515 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:33:28,516 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:33:28,516 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:33:28,516 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:33:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:33:28,548 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:33:30,654 INFO L134 CoverageAnalysis]: Checked inductivity of 9388 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 4832 trivial. 0 not checked. [2018-01-31 09:33:30,654 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:33:30,655 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 09:33:30,659 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:33:31,586 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:33:31,593 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:33:31,765 INFO L134 CoverageAnalysis]: Checked inductivity of 9388 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 4832 trivial. 0 not checked. [2018-01-31 09:33:31,785 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:33:31,786 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 73 [2018-01-31 09:33:31,786 INFO L409 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-01-31 09:33:31,786 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-01-31 09:33:31,787 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1368, Invalid=3888, Unknown=0, NotChecked=0, Total=5256 [2018-01-31 09:33:31,787 INFO L87 Difference]: Start difference. First operand 493 states and 497 transitions. Second operand 73 states. [2018-01-31 09:33:33,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:33:33,276 INFO L93 Difference]: Finished difference Result 713 states and 721 transitions. [2018-01-31 09:33:33,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-01-31 09:33:33,281 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 688 [2018-01-31 09:33:33,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:33:33,282 INFO L225 Difference]: With dead ends: 713 [2018-01-31 09:33:33,282 INFO L226 Difference]: Without dead ends: 506 [2018-01-31 09:33:33,284 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 687 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=6199, Invalid=13541, Unknown=0, NotChecked=0, Total=19740 [2018-01-31 09:33:33,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2018-01-31 09:33:33,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 501. [2018-01-31 09:33:33,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2018-01-31 09:33:33,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 505 transitions. [2018-01-31 09:33:33,288 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 505 transitions. Word has length 688 [2018-01-31 09:33:33,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:33:33,288 INFO L432 AbstractCegarLoop]: Abstraction has 501 states and 505 transitions. [2018-01-31 09:33:33,288 INFO L433 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-01-31 09:33:33,289 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 505 transitions. [2018-01-31 09:33:33,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2018-01-31 09:33:33,291 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:33:33,291 INFO L351 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 35, 35, 33, 33, 33, 33, 33, 33, 33, 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 09:33:33,291 INFO L371 AbstractCegarLoop]: === Iteration 39 === [mainErr0AssertViolation]=== [2018-01-31 09:33:33,292 INFO L82 PathProgramCache]: Analyzing trace with hash 68220238, now seen corresponding path program 35 times [2018-01-31 09:33:33,292 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:33:33,292 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:33:33,292 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:33:33,292 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:33:33,292 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:33:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:33:33,308 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:33:35,527 INFO L134 CoverageAnalysis]: Checked inductivity of 9662 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 4832 trivial. 0 not checked. [2018-01-31 09:33:35,527 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:33:35,527 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 09:33:35,540 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:33:35,554 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:35,555 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:35,556 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:35,557 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:35,559 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:35,561 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:35,564 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:35,567 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:35,569 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:35,572 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:35,582 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:35,589 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:35,604 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:35,609 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:35,619 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:35,651 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:35,675 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:35,687 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:35,714 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:35,744 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:35,765 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:35,779 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:35,803 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:35,847 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:35,887 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:35,928 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:36,922 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:37,434 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:39,045 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:40,874 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:45,705 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:50,669 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:54,743 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:58,770 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:33:58,774 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:33:58,786 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:33:59,369 INFO L134 CoverageAnalysis]: Checked inductivity of 9662 backedges. 2038 proven. 462 refuted. 0 times theorem prover too weak. 7162 trivial. 0 not checked. [2018-01-31 09:33:59,392 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:33:59,392 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 25] total 96 [2018-01-31 09:33:59,393 INFO L409 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-01-31 09:33:59,393 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-01-31 09:33:59,393 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1535, Invalid=7585, Unknown=0, NotChecked=0, Total=9120 [2018-01-31 09:33:59,394 INFO L87 Difference]: Start difference. First operand 501 states and 505 transitions. Second operand 96 states. [2018-01-31 09:34:01,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:34:01,721 INFO L93 Difference]: Finished difference Result 734 states and 746 transitions. [2018-01-31 09:34:01,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-01-31 09:34:01,721 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 696 [2018-01-31 09:34:01,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:34:01,722 INFO L225 Difference]: With dead ends: 734 [2018-01-31 09:34:01,722 INFO L226 Difference]: Without dead ends: 527 [2018-01-31 09:34:01,725 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 860 GetRequests, 674 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7073 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=7195, Invalid=27961, Unknown=0, NotChecked=0, Total=35156 [2018-01-31 09:34:01,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2018-01-31 09:34:01,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 517. [2018-01-31 09:34:01,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 517 states. [2018-01-31 09:34:01,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 521 transitions. [2018-01-31 09:34:01,729 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 521 transitions. Word has length 696 [2018-01-31 09:34:01,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:34:01,729 INFO L432 AbstractCegarLoop]: Abstraction has 517 states and 521 transitions. [2018-01-31 09:34:01,729 INFO L433 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-01-31 09:34:01,729 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 521 transitions. [2018-01-31 09:34:01,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2018-01-31 09:34:01,732 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:34:01,732 INFO L351 BasicCegarLoop]: trace histogram [39, 37, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 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 09:34:01,732 INFO L371 AbstractCegarLoop]: === Iteration 40 === [mainErr0AssertViolation]=== [2018-01-31 09:34:01,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1683303104, now seen corresponding path program 36 times [2018-01-31 09:34:01,732 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:34:01,732 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:34:01,733 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:34:01,733 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:34:01,733 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:34:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:34:01,751 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:34:04,126 INFO L134 CoverageAnalysis]: Checked inductivity of 10778 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 5666 trivial. 0 not checked. [2018-01-31 09:34:04,126 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:34:04,126 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 09:34:04,137 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:34:04,157 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:34:04,158 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:34:04,161 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:34:04,164 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:34:04,170 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:34:04,190 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:34:04,212 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:34:04,236 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:34:04,259 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:34:04,393 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:34:04,498 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:34:04,580 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:34:04,808 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:34:05,023 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:34:05,189 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:34:05,426 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:34:05,903 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:34:06,863 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:34:07,392 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:34:07,994 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:34:08,156 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:34:08,772 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:34:10,498 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:34:10,501 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:34:10,509 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:34:11,079 INFO L134 CoverageAnalysis]: Checked inductivity of 10778 backedges. 2420 proven. 380 refuted. 0 times theorem prover too weak. 7978 trivial. 0 not checked. [2018-01-31 09:34:11,100 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:34:11,100 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 23] total 96 [2018-01-31 09:34:11,100 INFO L409 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-01-31 09:34:11,101 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-01-31 09:34:11,101 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1585, Invalid=7535, Unknown=0, NotChecked=0, Total=9120 [2018-01-31 09:34:11,101 INFO L87 Difference]: Start difference. First operand 517 states and 521 transitions. Second operand 96 states. [2018-01-31 09:34:13,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:34:13,594 INFO L93 Difference]: Finished difference Result 758 states and 767 transitions. [2018-01-31 09:34:13,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-01-31 09:34:13,594 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 728 [2018-01-31 09:34:13,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:34:13,595 INFO L225 Difference]: With dead ends: 758 [2018-01-31 09:34:13,595 INFO L226 Difference]: Without dead ends: 543 [2018-01-31 09:34:13,598 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7027 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=7445, Invalid=27711, Unknown=0, NotChecked=0, Total=35156 [2018-01-31 09:34:13,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2018-01-31 09:34:13,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 533. [2018-01-31 09:34:13,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2018-01-31 09:34:13,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 537 transitions. [2018-01-31 09:34:13,602 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 537 transitions. Word has length 728 [2018-01-31 09:34:13,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:34:13,602 INFO L432 AbstractCegarLoop]: Abstraction has 533 states and 537 transitions. [2018-01-31 09:34:13,602 INFO L433 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-01-31 09:34:13,602 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 537 transitions. [2018-01-31 09:34:13,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2018-01-31 09:34:13,605 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:34:13,605 INFO L351 BasicCegarLoop]: trace histogram [39, 38, 37, 37, 37, 37, 37, 37, 37, 36, 36, 36, 36, 36, 36, 36, 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 09:34:13,605 INFO L371 AbstractCegarLoop]: === Iteration 41 === [mainErr0AssertViolation]=== [2018-01-31 09:34:13,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1586378016, now seen corresponding path program 37 times [2018-01-31 09:34:13,606 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:34:13,606 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:34:13,606 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:34:13,606 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:34:13,606 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:34:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:34:13,625 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:34:16,212 INFO L134 CoverageAnalysis]: Checked inductivity of 11150 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 5748 trivial. 0 not checked. [2018-01-31 09:34:16,212 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:34:16,212 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 09:34:16,232 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:34:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:34:16,309 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:34:16,516 INFO L134 CoverageAnalysis]: Checked inductivity of 11150 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 5748 trivial. 0 not checked. [2018-01-31 09:34:16,533 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:34:16,533 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 79 [2018-01-31 09:34:16,533 INFO L409 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-01-31 09:34:16,533 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-01-31 09:34:16,534 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1599, Invalid=4563, Unknown=0, NotChecked=0, Total=6162 [2018-01-31 09:34:16,534 INFO L87 Difference]: Start difference. First operand 533 states and 537 transitions. Second operand 79 states. [2018-01-31 09:34:18,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:34:18,035 INFO L93 Difference]: Finished difference Result 769 states and 777 transitions. [2018-01-31 09:34:18,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-01-31 09:34:18,036 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 744 [2018-01-31 09:34:18,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:34:18,037 INFO L225 Difference]: With dead ends: 769 [2018-01-31 09:34:18,037 INFO L226 Difference]: Without dead ends: 546 [2018-01-31 09:34:18,039 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 743 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4391 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=7300, Invalid=15956, Unknown=0, NotChecked=0, Total=23256 [2018-01-31 09:34:18,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2018-01-31 09:34:18,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 541. [2018-01-31 09:34:18,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2018-01-31 09:34:18,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 545 transitions. [2018-01-31 09:34:18,043 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 545 transitions. Word has length 744 [2018-01-31 09:34:18,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:34:18,043 INFO L432 AbstractCegarLoop]: Abstraction has 541 states and 545 transitions. [2018-01-31 09:34:18,043 INFO L433 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-01-31 09:34:18,043 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 545 transitions. [2018-01-31 09:34:18,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2018-01-31 09:34:18,046 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:34:18,046 INFO L351 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 38, 38, 38, 36, 36, 36, 36, 36, 36, 36, 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 09:34:18,046 INFO L371 AbstractCegarLoop]: === Iteration 42 === [mainErr0AssertViolation]=== [2018-01-31 09:34:18,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1888309623, now seen corresponding path program 38 times [2018-01-31 09:34:18,046 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:34:18,046 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:34:18,047 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:34:18,047 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:34:18,047 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:34:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:34:18,066 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:34:20,732 INFO L134 CoverageAnalysis]: Checked inductivity of 11448 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 5748 trivial. 0 not checked. [2018-01-31 09:34:20,732 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:34:20,732 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 09:34:20,746 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:34:20,766 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:34:20,808 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:34:20,817 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:34:20,821 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:34:21,024 INFO L134 CoverageAnalysis]: Checked inductivity of 11448 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 5748 trivial. 0 not checked. [2018-01-31 09:34:21,041 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:34:21,041 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 81 [2018-01-31 09:34:21,042 INFO L409 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-01-31 09:34:21,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-01-31 09:34:21,042 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1680, Invalid=4800, Unknown=0, NotChecked=0, Total=6480 [2018-01-31 09:34:21,042 INFO L87 Difference]: Start difference. First operand 541 states and 545 transitions. Second operand 81 states. [2018-01-31 09:34:23,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:34:23,238 INFO L93 Difference]: Finished difference Result 777 states and 785 transitions. [2018-01-31 09:34:23,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-01-31 09:34:23,238 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 752 [2018-01-31 09:34:23,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:34:23,240 INFO L225 Difference]: With dead ends: 777 [2018-01-31 09:34:23,240 INFO L226 Difference]: Without dead ends: 554 [2018-01-31 09:34:23,241 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 751 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4624 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=7687, Invalid=16805, Unknown=0, NotChecked=0, Total=24492 [2018-01-31 09:34:23,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2018-01-31 09:34:23,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 549. [2018-01-31 09:34:23,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2018-01-31 09:34:23,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 553 transitions. [2018-01-31 09:34:23,245 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 553 transitions. Word has length 752 [2018-01-31 09:34:23,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:34:23,245 INFO L432 AbstractCegarLoop]: Abstraction has 549 states and 553 transitions. [2018-01-31 09:34:23,245 INFO L433 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-01-31 09:34:23,245 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 553 transitions. [2018-01-31 09:34:23,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2018-01-31 09:34:23,248 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:34:23,249 INFO L351 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 39, 39, 36, 36, 36, 36, 36, 36, 36, 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 09:34:23,249 INFO L371 AbstractCegarLoop]: === Iteration 43 === [mainErr0AssertViolation]=== [2018-01-31 09:34:23,249 INFO L82 PathProgramCache]: Analyzing trace with hash -991973646, now seen corresponding path program 39 times [2018-01-31 09:34:23,249 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:34:23,249 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:34:23,249 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:34:23,249 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:34:23,250 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:34:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:34:23,268 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:34:26,179 INFO L134 CoverageAnalysis]: Checked inductivity of 11754 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 5748 trivial. 0 not checked. [2018-01-31 09:34:26,179 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:34:26,179 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 09:34:26,187 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:34:26,205 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:34:26,209 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:34:26,214 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:34:26,223 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:34:26,244 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:34:26,268 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:34:26,304 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:34:26,331 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:34:26,348 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:34:26,411 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:34:26,499 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:34:26,634 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:34:26,769 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:34:26,771 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:34:26,776 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:34:27,475 INFO L134 CoverageAnalysis]: Checked inductivity of 11754 backedges. 2410 proven. 552 refuted. 0 times theorem prover too weak. 8792 trivial. 0 not checked. [2018-01-31 09:34:27,496 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:34:27,496 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 27] total 106 [2018-01-31 09:34:27,496 INFO L409 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-01-31 09:34:27,497 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-01-31 09:34:27,497 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1874, Invalid=9256, Unknown=0, NotChecked=0, Total=11130 [2018-01-31 09:34:27,497 INFO L87 Difference]: Start difference. First operand 549 states and 553 transitions. Second operand 106 states. [2018-01-31 09:34:30,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:34:30,695 INFO L93 Difference]: Finished difference Result 793 states and 805 transitions. [2018-01-31 09:34:30,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-01-31 09:34:30,697 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 760 [2018-01-31 09:34:30,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:34:30,698 INFO L225 Difference]: With dead ends: 793 [2018-01-31 09:34:30,698 INFO L226 Difference]: Without dead ends: 570 [2018-01-31 09:34:30,700 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 942 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8690 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=8840, Invalid=34216, Unknown=0, NotChecked=0, Total=43056 [2018-01-31 09:34:30,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2018-01-31 09:34:30,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 565. [2018-01-31 09:34:30,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 565 states. [2018-01-31 09:34:30,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 569 transitions. [2018-01-31 09:34:30,704 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 569 transitions. Word has length 760 [2018-01-31 09:34:30,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:34:30,705 INFO L432 AbstractCegarLoop]: Abstraction has 565 states and 569 transitions. [2018-01-31 09:34:30,705 INFO L433 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-01-31 09:34:30,705 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 569 transitions. [2018-01-31 09:34:30,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2018-01-31 09:34:30,708 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:34:30,708 INFO L351 BasicCegarLoop]: trace histogram [42, 41, 40, 40, 40, 40, 40, 40, 40, 39, 39, 39, 39, 39, 39, 39, 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 09:34:30,709 INFO L371 AbstractCegarLoop]: === Iteration 44 === [mainErr0AssertViolation]=== [2018-01-31 09:34:30,709 INFO L82 PathProgramCache]: Analyzing trace with hash 677054692, now seen corresponding path program 40 times [2018-01-31 09:34:30,709 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:34:30,709 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:34:30,709 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:34:30,709 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:34:30,709 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:34:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:34:30,730 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:34:31,684 INFO L134 CoverageAnalysis]: Checked inductivity of 12974 backedges. 0 proven. 3468 refuted. 0 times theorem prover too weak. 9506 trivial. 0 not checked. [2018-01-31 09:34:31,684 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:34:31,684 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 09:34:31,688 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Received shutdown request... [2018-01-31 09:34:32,987 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:34:32,995 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:34:32,999 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-31 09:34:32,999 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-31 09:34:33,002 WARN L185 ceAbstractionStarter]: Timeout [2018-01-31 09:34:33,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 09:34:33 BoogieIcfgContainer [2018-01-31 09:34:33,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-31 09:34:33,003 INFO L168 Benchmark]: Toolchain (without parser) took 154808.22 ms. Allocated memory was 150.5 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 115.5 MB in the beginning and 290.9 MB in the end (delta: -175.4 MB). Peak memory consumption was 1.8 GB. Max. memory is 5.3 GB. [2018-01-31 09:34:33,004 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 150.5 MB. Free memory is still 120.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 09:34:33,004 INFO L168 Benchmark]: CACSL2BoogieTranslator took 112.21 ms. Allocated memory is still 150.5 MB. Free memory was 115.3 MB in the beginning and 106.7 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 5.3 GB. [2018-01-31 09:34:33,004 INFO L168 Benchmark]: Boogie Preprocessor took 19.54 ms. Allocated memory is still 150.5 MB. Free memory was 106.7 MB in the beginning and 105.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 5.3 GB. [2018-01-31 09:34:33,004 INFO L168 Benchmark]: RCFGBuilder took 361.28 ms. Allocated memory is still 150.5 MB. Free memory was 105.0 MB in the beginning and 86.2 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 5.3 GB. [2018-01-31 09:34:33,004 INFO L168 Benchmark]: TraceAbstraction took 154312.97 ms. Allocated memory was 150.5 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 86.0 MB in the beginning and 290.9 MB in the end (delta: -204.9 MB). Peak memory consumption was 1.7 GB. Max. memory is 5.3 GB. [2018-01-31 09:34:33,005 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 150.5 MB. Free memory is still 120.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 112.21 ms. Allocated memory is still 150.5 MB. Free memory was 115.3 MB in the beginning and 106.7 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 19.54 ms. Allocated memory is still 150.5 MB. Free memory was 106.7 MB in the beginning and 105.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 361.28 ms. Allocated memory is still 150.5 MB. Free memory was 105.0 MB in the beginning and 86.2 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 5.3 GB. * TraceAbstraction took 154312.97 ms. Allocated memory was 150.5 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 86.0 MB in the beginning and 290.9 MB in the end (delta: -204.9 MB). Peak memory consumption was 1.7 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 39]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 39). Cancelled while BasicCegarLoop was analyzing trace of length 793 with TraceHistMax 42, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 29 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 78 locations, 1 error locations. TIMEOUT Result, 154.2s OverallTime, 44 OverallIterations, 42 TraceHistogramMax, 41.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2967 SDtfs, 5762 SDslu, 90870 SDs, 0 SdLazy, 12067 SolverSat, 1361 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21756 GetRequests, 17971 SyntacticMatches, 0 SemanticMatches, 3785 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95326 ImplicationChecksByTransitivity, 59.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=565occurred in iteration=43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 43 MinimizatonAttempts, 315 StatesRemovedByMinimization, 42 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 54.6s SatisfiabilityAnalysisTime, 50.9s InterpolantComputationTime, 36651 NumberOfCodeBlocks, 34697 NumberOfCodeBlocksAsserted, 342 NumberOfCheckSat, 36567 ConstructedInterpolants, 0 QuantifiedInterpolants, 31060427 SizeOfPredicates, 1095 NumberOfNonLiveVariables, 25014 ConjunctsInSsa, 1202 ConjunctsInUnsatCore, 84 InterpolantComputations, 4 PerfectInterpolantSequences, 237815/362193 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum40_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-31_09-34-33-009.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum40_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-31_09-34-33-009.csv Completed graceful shutdown