java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/reducercommutativity/sum20_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cceb4a-m [2018-01-30 01:01:14,223 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-30 01:01:14,224 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-30 01:01:14,233 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-30 01:01:14,233 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-30 01:01:14,234 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-30 01:01:14,235 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-30 01:01:14,236 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-30 01:01:14,237 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-30 01:01:14,237 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-30 01:01:14,238 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-30 01:01:14,238 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-30 01:01:14,238 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-30 01:01:14,239 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-30 01:01:14,240 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-30 01:01:14,241 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-30 01:01:14,242 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-30 01:01:14,243 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-30 01:01:14,243 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-30 01:01:14,244 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-30 01:01:14,245 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-30 01:01:14,249 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 [2018-01-30 01:01:14,254 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-30 01:01:14,254 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-30 01:01:14,254 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-30 01:01:14,254 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-30 01:01:14,254 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-30 01:01:14,254 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-30 01:01:14,255 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-30 01:01:14,255 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-30 01:01:14,255 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-30 01:01:14,255 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-30 01:01:14,255 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-30 01:01:14,255 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-30 01:01:14,255 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-30 01:01:14,255 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-30 01:01:14,255 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-30 01:01:14,256 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-30 01:01:14,256 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-30 01:01:14,256 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-30 01:01:14,256 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-30 01:01:14,256 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-30 01:01:14,256 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-30 01:01:14,256 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-30 01:01:14,256 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-30 01:01:14,256 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-30 01:01:14,256 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-30 01:01:14,256 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-30 01:01:14,257 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-30 01:01:14,257 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-30 01:01:14,257 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-30 01:01:14,257 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-30 01:01:14,257 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-30 01:01:14,257 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-30 01:01:14,257 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-30 01:01:14,257 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-30 01:01:14,275 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-30 01:01:14,281 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-30 01:01:14,283 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-30 01:01:14,284 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-30 01:01:14,284 INFO L276 PluginConnector]: CDTParser initialized [2018-01-30 01:01:14,285 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum20_true-unreach-call.i [2018-01-30 01:01:14,363 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-30 01:01:14,364 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-30 01:01:14,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-30 01:01:14,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-30 01:01:14,368 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-30 01:01:14,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 01:01:14" (1/1) ... [2018-01-30 01:01:14,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c474c58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:01:14, skipping insertion in model container [2018-01-30 01:01:14,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 01:01:14" (1/1) ... [2018-01-30 01:01:14,380 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 01:01:14,389 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 01:01:14,461 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 01:01:14,473 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 01:01:14,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:01:14 WrapperNode [2018-01-30 01:01:14,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-30 01:01:14,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-30 01:01:14,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-30 01:01:14,478 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-30 01:01:14,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:01:14" (1/1) ... [2018-01-30 01:01:14,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:01:14" (1/1) ... [2018-01-30 01:01:14,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:01:14" (1/1) ... [2018-01-30 01:01:14,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:01:14" (1/1) ... [2018-01-30 01:01:14,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:01:14" (1/1) ... [2018-01-30 01:01:14,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:01:14" (1/1) ... [2018-01-30 01:01:14,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:01:14" (1/1) ... [2018-01-30 01:01:14,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-30 01:01:14,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-30 01:01:14,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-30 01:01:14,498 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-30 01:01:14,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:01:14" (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 [2018-01-30 01:01:14,539 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-30 01:01:14,539 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-30 01:01:14,539 INFO L136 BoogieDeclarations]: Found implementation of procedure sum [2018-01-30 01:01:14,539 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-30 01:01:14,539 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-30 01:01:14,539 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-30 01:01:14,540 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-30 01:01:14,540 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-30 01:01:14,540 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-30 01:01:14,540 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-30 01:01:14,540 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-30 01:01:14,540 INFO L128 BoogieDeclarations]: Found specification of procedure sum [2018-01-30 01:01:14,540 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-30 01:01:14,540 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-30 01:01:14,540 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-30 01:01:14,894 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-30 01:01:14,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 01:01:14 BoogieIcfgContainer [2018-01-30 01:01:14,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-30 01:01:14,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-30 01:01:14,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-30 01:01:14,897 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-30 01:01:14,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 01:01:14" (1/3) ... [2018-01-30 01:01:14,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d78172a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 01:01:14, skipping insertion in model container [2018-01-30 01:01:14,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:01:14" (2/3) ... [2018-01-30 01:01:14,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d78172a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 01:01:14, skipping insertion in model container [2018-01-30 01:01:14,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 01:01:14" (3/3) ... [2018-01-30 01:01:14,898 INFO L107 eAbstractionObserver]: Analyzing ICFG sum20_true-unreach-call.i [2018-01-30 01:01:14,904 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-30 01:01:14,908 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-30 01:01:14,932 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-30 01:01:14,932 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-30 01:01:14,932 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-30 01:01:14,932 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-30 01:01:14,932 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-30 01:01:14,932 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-30 01:01:14,932 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-30 01:01:14,933 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-30 01:01:14,933 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-30 01:01:14,942 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2018-01-30 01:01:14,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-01-30 01:01:14,947 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:14,948 INFO L350 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] [2018-01-30 01:01:14,948 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolation]=== [2018-01-30 01:01:14,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1274758379, now seen corresponding path program 1 times [2018-01-30 01:01:14,951 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:14,952 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:14,980 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:14,980 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:01:14,980 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:15,010 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:15,063 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-01-30 01:01:15,064 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 01:01:15,064 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-30 01:01:15,065 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-30 01:01:15,072 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-30 01:01:15,073 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-30 01:01:15,074 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 2 states. [2018-01-30 01:01:15,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:15,091 INFO L93 Difference]: Finished difference Result 136 states and 153 transitions. [2018-01-30 01:01:15,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-30 01:01:15,092 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 67 [2018-01-30 01:01:15,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:15,097 INFO L225 Difference]: With dead ends: 136 [2018-01-30 01:01:15,097 INFO L226 Difference]: Without dead ends: 71 [2018-01-30 01:01:15,099 INFO L553 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 [2018-01-30 01:01:15,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-01-30 01:01:15,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-01-30 01:01:15,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-01-30 01:01:15,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2018-01-30 01:01:15,129 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 67 [2018-01-30 01:01:15,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:15,129 INFO L432 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2018-01-30 01:01:15,129 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-30 01:01:15,129 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2018-01-30 01:01:15,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-01-30 01:01:15,131 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:15,131 INFO L350 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] [2018-01-30 01:01:15,131 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolation]=== [2018-01-30 01:01:15,132 INFO L82 PathProgramCache]: Analyzing trace with hash -780571542, now seen corresponding path program 1 times [2018-01-30 01:01:15,132 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:15,132 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:15,133 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:15,133 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:01:15,133 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:15,204 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:15,296 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-01-30 01:01:15,296 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 01:01:15,297 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-30 01:01:15,298 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-30 01:01:15,298 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-30 01:01:15,298 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-30 01:01:15,298 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 3 states. [2018-01-30 01:01:15,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:15,383 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2018-01-30 01:01:15,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-30 01:01:15,385 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2018-01-30 01:01:15,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:15,386 INFO L225 Difference]: With dead ends: 129 [2018-01-30 01:01:15,386 INFO L226 Difference]: Without dead ends: 78 [2018-01-30 01:01:15,387 INFO L553 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 [2018-01-30 01:01:15,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-01-30 01:01:15,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2018-01-30 01:01:15,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-01-30 01:01:15,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2018-01-30 01:01:15,391 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 72 [2018-01-30 01:01:15,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:15,391 INFO L432 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2018-01-30 01:01:15,391 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-30 01:01:15,392 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2018-01-30 01:01:15,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-01-30 01:01:15,393 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:15,393 INFO L350 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] [2018-01-30 01:01:15,393 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolation]=== [2018-01-30 01:01:15,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1544788435, now seen corresponding path program 1 times [2018-01-30 01:01:15,393 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:15,393 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:15,394 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:15,394 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:01:15,394 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:15,403 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:15,482 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-01-30 01:01:15,482 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:15,482 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 [2018-01-30 01:01:15,504 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:01:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:15,539 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:15,637 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-01-30 01:01:15,656 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-30 01:01:15,656 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-30 01:01:15,656 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-30 01:01:15,656 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-30 01:01:15,659 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-30 01:01:15,659 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 6 states. [2018-01-30 01:01:15,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:15,829 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2018-01-30 01:01:15,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-30 01:01:15,833 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2018-01-30 01:01:15,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:15,834 INFO L225 Difference]: With dead ends: 144 [2018-01-30 01:01:15,834 INFO L226 Difference]: Without dead ends: 93 [2018-01-30 01:01:15,834 INFO L553 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 [2018-01-30 01:01:15,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-01-30 01:01:15,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2018-01-30 01:01:15,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-01-30 01:01:15,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2018-01-30 01:01:15,839 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 80 [2018-01-30 01:01:15,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:15,843 INFO L432 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2018-01-30 01:01:15,843 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-30 01:01:15,843 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2018-01-30 01:01:15,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-01-30 01:01:15,845 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:15,845 INFO L350 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] [2018-01-30 01:01:15,845 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolation]=== [2018-01-30 01:01:15,845 INFO L82 PathProgramCache]: Analyzing trace with hash 278598597, now seen corresponding path program 1 times [2018-01-30 01:01:15,855 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:15,855 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:15,856 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:15,856 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:01:15,856 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:15,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:15,874 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:15,953 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-01-30 01:01:15,954 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:15,954 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 01:01:15,963 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:01:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:16,001 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:16,018 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-01-30 01:01:16,034 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-30 01:01:16,034 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-30 01:01:16,035 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-30 01:01:16,035 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-30 01:01:16,035 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-30 01:01:16,035 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 6 states. [2018-01-30 01:01:16,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:16,165 INFO L93 Difference]: Finished difference Result 155 states and 166 transitions. [2018-01-30 01:01:16,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-30 01:01:16,166 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-01-30 01:01:16,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:16,167 INFO L225 Difference]: With dead ends: 155 [2018-01-30 01:01:16,167 INFO L226 Difference]: Without dead ends: 103 [2018-01-30 01:01:16,168 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-30 01:01:16,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-01-30 01:01:16,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 93. [2018-01-30 01:01:16,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-01-30 01:01:16,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2018-01-30 01:01:16,174 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 112 [2018-01-30 01:01:16,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:16,174 INFO L432 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2018-01-30 01:01:16,174 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-30 01:01:16,174 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2018-01-30 01:01:16,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-01-30 01:01:16,175 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:16,176 INFO L350 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] [2018-01-30 01:01:16,176 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolation]=== [2018-01-30 01:01:16,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1429723589, now seen corresponding path program 1 times [2018-01-30 01:01:16,176 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:16,176 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:16,176 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:16,177 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:01:16,177 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:16,190 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:16,271 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-01-30 01:01:16,271 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:16,271 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) [2018-01-30 01:01:16,276 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 01:01:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:16,308 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:16,537 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2018-01-30 01:01:16,554 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:01:16,554 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2018-01-30 01:01:16,554 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-30 01:01:16,555 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-30 01:01:16,555 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-30 01:01:16,555 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 10 states. [2018-01-30 01:01:16,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:16,689 INFO L93 Difference]: Finished difference Result 182 states and 191 transitions. [2018-01-30 01:01:16,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-30 01:01:16,689 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 144 [2018-01-30 01:01:16,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:16,690 INFO L225 Difference]: With dead ends: 182 [2018-01-30 01:01:16,690 INFO L226 Difference]: Without dead ends: 119 [2018-01-30 01:01:16,690 INFO L553 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 [2018-01-30 01:01:16,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-01-30 01:01:16,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 109. [2018-01-30 01:01:16,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-01-30 01:01:16,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2018-01-30 01:01:16,695 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 144 [2018-01-30 01:01:16,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:16,695 INFO L432 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2018-01-30 01:01:16,695 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-30 01:01:16,696 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2018-01-30 01:01:16,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-01-30 01:01:16,698 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:16,698 INFO L350 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] [2018-01-30 01:01:16,698 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolation]=== [2018-01-30 01:01:16,698 INFO L82 PathProgramCache]: Analyzing trace with hash 918434213, now seen corresponding path program 2 times [2018-01-30 01:01:16,698 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:16,699 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:16,699 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:16,699 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:01:16,699 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:16,718 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:17,054 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-01-30 01:01:17,055 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:17,055 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 [2018-01-30 01:01:17,059 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 01:01:17,071 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:17,093 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:17,105 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:01:17,109 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:17,315 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-01-30 01:01:17,332 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:01:17,332 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2018-01-30 01:01:17,332 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-30 01:01:17,332 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-30 01:01:17,333 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-01-30 01:01:17,333 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 14 states. [2018-01-30 01:01:17,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:17,599 INFO L93 Difference]: Finished difference Result 206 states and 218 transitions. [2018-01-30 01:01:17,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-30 01:01:17,599 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 160 [2018-01-30 01:01:17,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:17,600 INFO L225 Difference]: With dead ends: 206 [2018-01-30 01:01:17,600 INFO L226 Difference]: Without dead ends: 135 [2018-01-30 01:01:17,601 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2018-01-30 01:01:17,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-01-30 01:01:17,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 125. [2018-01-30 01:01:17,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-01-30 01:01:17,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2018-01-30 01:01:17,605 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 160 [2018-01-30 01:01:17,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:17,605 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2018-01-30 01:01:17,605 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-30 01:01:17,605 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2018-01-30 01:01:17,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-01-30 01:01:17,607 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:17,607 INFO L350 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] [2018-01-30 01:01:17,607 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolation]=== [2018-01-30 01:01:17,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1059719273, now seen corresponding path program 3 times [2018-01-30 01:01:17,607 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:17,607 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:17,608 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:17,608 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:01:17,608 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:17,622 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:17,798 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2018-01-30 01:01:17,799 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:17,799 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 [2018-01-30 01:01:17,804 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 01:01:17,813 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:17,823 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:17,830 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:17,840 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:17,841 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:01:17,845 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:17,871 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 188 proven. 12 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-01-30 01:01:17,892 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:01:17,893 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-01-30 01:01:17,893 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-30 01:01:17,893 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-30 01:01:17,893 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-30 01:01:17,893 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand 9 states. [2018-01-30 01:01:17,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:17,966 INFO L93 Difference]: Finished difference Result 180 states and 185 transitions. [2018-01-30 01:01:17,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-30 01:01:17,967 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 192 [2018-01-30 01:01:17,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:17,968 INFO L225 Difference]: With dead ends: 180 [2018-01-30 01:01:17,968 INFO L226 Difference]: Without dead ends: 138 [2018-01-30 01:01:17,968 INFO L553 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 [2018-01-30 01:01:17,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-01-30 01:01:17,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 133. [2018-01-30 01:01:17,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-01-30 01:01:17,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 137 transitions. [2018-01-30 01:01:17,972 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 137 transitions. Word has length 192 [2018-01-30 01:01:17,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:17,974 INFO L432 AbstractCegarLoop]: Abstraction has 133 states and 137 transitions. [2018-01-30 01:01:17,974 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-30 01:01:17,974 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 137 transitions. [2018-01-30 01:01:17,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-01-30 01:01:17,975 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:17,975 INFO L350 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] [2018-01-30 01:01:17,975 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolation]=== [2018-01-30 01:01:17,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1802943502, now seen corresponding path program 4 times [2018-01-30 01:01:17,976 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:17,976 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:17,976 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:17,976 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:01:17,976 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:17,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:17,989 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:18,263 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2018-01-30 01:01:18,263 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:18,263 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 [2018-01-30 01:01:18,271 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 01:01:18,304 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:01:18,307 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:18,328 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2018-01-30 01:01:18,345 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:01:18,345 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2018-01-30 01:01:18,345 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-30 01:01:18,346 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-30 01:01:18,346 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-30 01:01:18,346 INFO L87 Difference]: Start difference. First operand 133 states and 137 transitions. Second operand 13 states. [2018-01-30 01:01:18,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:18,434 INFO L93 Difference]: Finished difference Result 233 states and 241 transitions. [2018-01-30 01:01:18,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-30 01:01:18,434 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 200 [2018-01-30 01:01:18,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:18,435 INFO L225 Difference]: With dead ends: 233 [2018-01-30 01:01:18,435 INFO L226 Difference]: Without dead ends: 146 [2018-01-30 01:01:18,436 INFO L553 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 [2018-01-30 01:01:18,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-30 01:01:18,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 141. [2018-01-30 01:01:18,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-01-30 01:01:18,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 145 transitions. [2018-01-30 01:01:18,439 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 145 transitions. Word has length 200 [2018-01-30 01:01:18,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:18,439 INFO L432 AbstractCegarLoop]: Abstraction has 141 states and 145 transitions. [2018-01-30 01:01:18,439 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-30 01:01:18,439 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 145 transitions. [2018-01-30 01:01:18,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-01-30 01:01:18,440 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:18,440 INFO L350 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] [2018-01-30 01:01:18,441 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolation]=== [2018-01-30 01:01:18,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1334925687, now seen corresponding path program 5 times [2018-01-30 01:01:18,441 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:18,441 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:18,441 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:18,441 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:01:18,441 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:18,453 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:18,579 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2018-01-30 01:01:18,580 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:18,580 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-01-30 01:01:18,590 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 01:01:18,599 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:18,602 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:18,606 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:18,616 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:18,622 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:01:18,624 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:18,693 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 182 proven. 30 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-01-30 01:01:18,710 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:01:18,711 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2018-01-30 01:01:18,711 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-30 01:01:18,711 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-30 01:01:18,711 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2018-01-30 01:01:18,711 INFO L87 Difference]: Start difference. First operand 141 states and 145 transitions. Second operand 20 states. [2018-01-30 01:01:19,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:19,012 INFO L93 Difference]: Finished difference Result 254 states and 266 transitions. [2018-01-30 01:01:19,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-30 01:01:19,013 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 208 [2018-01-30 01:01:19,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:19,014 INFO L225 Difference]: With dead ends: 254 [2018-01-30 01:01:19,014 INFO L226 Difference]: Without dead ends: 167 [2018-01-30 01:01:19,014 INFO L553 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 [2018-01-30 01:01:19,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-01-30 01:01:19,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 157. [2018-01-30 01:01:19,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-01-30 01:01:19,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 161 transitions. [2018-01-30 01:01:19,018 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 161 transitions. Word has length 208 [2018-01-30 01:01:19,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:19,018 INFO L432 AbstractCegarLoop]: Abstraction has 157 states and 161 transitions. [2018-01-30 01:01:19,018 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-01-30 01:01:19,019 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 161 transitions. [2018-01-30 01:01:19,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-01-30 01:01:19,021 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:19,021 INFO L350 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] [2018-01-30 01:01:19,021 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolation]=== [2018-01-30 01:01:19,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1311007081, now seen corresponding path program 6 times [2018-01-30 01:01:19,021 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:19,021 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:19,022 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:19,022 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:01:19,022 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:19,033 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:19,225 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-01-30 01:01:19,225 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:19,225 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 [2018-01-30 01:01:19,231 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 01:01:19,243 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:19,245 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:19,249 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:19,253 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:19,259 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:19,273 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:19,281 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:19,282 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:01:19,285 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 454 proven. 56 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2018-01-30 01:01:19,414 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:01:19,414 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2018-01-30 01:01:19,414 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-30 01:01:19,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-30 01:01:19,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2018-01-30 01:01:19,415 INFO L87 Difference]: Start difference. First operand 157 states and 161 transitions. Second operand 24 states. [2018-01-30 01:01:19,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:19,720 INFO L93 Difference]: Finished difference Result 278 states and 290 transitions. [2018-01-30 01:01:19,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-30 01:01:19,729 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 240 [2018-01-30 01:01:19,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:19,730 INFO L225 Difference]: With dead ends: 278 [2018-01-30 01:01:19,730 INFO L226 Difference]: Without dead ends: 183 [2018-01-30 01:01:19,730 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=365, Invalid=1527, Unknown=0, NotChecked=0, Total=1892 [2018-01-30 01:01:19,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-01-30 01:01:19,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 173. [2018-01-30 01:01:19,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-01-30 01:01:19,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 177 transitions. [2018-01-30 01:01:19,733 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 177 transitions. Word has length 240 [2018-01-30 01:01:19,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:19,734 INFO L432 AbstractCegarLoop]: Abstraction has 173 states and 177 transitions. [2018-01-30 01:01:19,734 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-30 01:01:19,734 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 177 transitions. [2018-01-30 01:01:19,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-01-30 01:01:19,735 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:19,735 INFO L350 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] [2018-01-30 01:01:19,735 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolation]=== [2018-01-30 01:01:19,736 INFO L82 PathProgramCache]: Analyzing trace with hash 438292315, now seen corresponding path program 7 times [2018-01-30 01:01:19,736 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:19,736 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:19,736 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:19,736 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:01:19,736 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:19,748 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:19,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-30 01:01:19,937 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:19,937 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 [2018-01-30 01:01:19,941 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:01:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:19,981 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:20,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-30 01:01:20,297 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:01:20,297 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2018-01-30 01:01:20,297 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-30 01:01:20,297 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-30 01:01:20,297 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-30 01:01:20,298 INFO L87 Difference]: Start difference. First operand 173 states and 177 transitions. Second operand 19 states. [2018-01-30 01:01:20,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:20,490 INFO L93 Difference]: Finished difference Result 289 states and 297 transitions. [2018-01-30 01:01:20,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-30 01:01:20,494 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 272 [2018-01-30 01:01:20,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:20,495 INFO L225 Difference]: With dead ends: 289 [2018-01-30 01:01:20,495 INFO L226 Difference]: Without dead ends: 186 [2018-01-30 01:01:20,495 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2018-01-30 01:01:20,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-01-30 01:01:20,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 181. [2018-01-30 01:01:20,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-01-30 01:01:20,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 185 transitions. [2018-01-30 01:01:20,499 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 185 transitions. Word has length 272 [2018-01-30 01:01:20,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:20,499 INFO L432 AbstractCegarLoop]: Abstraction has 181 states and 185 transitions. [2018-01-30 01:01:20,499 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-30 01:01:20,499 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 185 transitions. [2018-01-30 01:01:20,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-01-30 01:01:20,500 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:20,500 INFO L350 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] [2018-01-30 01:01:20,500 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolation]=== [2018-01-30 01:01:20,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1690774468, now seen corresponding path program 8 times [2018-01-30 01:01:20,500 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:20,500 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:20,501 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:20,501 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:01:20,501 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:20,512 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:20,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-30 01:01:20,981 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:20,981 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 [2018-01-30 01:01:20,995 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 01:01:21,006 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:21,023 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:21,026 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:01:21,029 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:21,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-30 01:01:21,137 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:01:21,138 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-30 01:01:21,138 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-30 01:01:21,138 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-30 01:01:21,138 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-30 01:01:21,138 INFO L87 Difference]: Start difference. First operand 181 states and 185 transitions. Second operand 21 states. [2018-01-30 01:01:21,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:21,280 INFO L93 Difference]: Finished difference Result 297 states and 305 transitions. [2018-01-30 01:01:21,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-30 01:01:21,289 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 280 [2018-01-30 01:01:21,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:21,290 INFO L225 Difference]: With dead ends: 297 [2018-01-30 01:01:21,290 INFO L226 Difference]: Without dead ends: 194 [2018-01-30 01:01:21,291 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2018-01-30 01:01:21,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-01-30 01:01:21,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 189. [2018-01-30 01:01:21,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-30 01:01:21,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 193 transitions. [2018-01-30 01:01:21,294 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 193 transitions. Word has length 280 [2018-01-30 01:01:21,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:21,294 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 193 transitions. [2018-01-30 01:01:21,294 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-30 01:01:21,294 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 193 transitions. [2018-01-30 01:01:21,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-01-30 01:01:21,295 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:21,295 INFO L350 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] [2018-01-30 01:01:21,296 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolation]=== [2018-01-30 01:01:21,296 INFO L82 PathProgramCache]: Analyzing trace with hash -2140926163, now seen corresponding path program 9 times [2018-01-30 01:01:21,296 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:21,296 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:21,296 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:21,296 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:01:21,296 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:21,313 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:21,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-30 01:01:21,774 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:21,774 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 [2018-01-30 01:01:21,779 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 01:01:21,790 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:21,805 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:21,819 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:21,827 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:21,844 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:21,846 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:01:21,848 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:21,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 460 proven. 30 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2018-01-30 01:01:21,947 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:01:21,947 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9] total 28 [2018-01-30 01:01:21,948 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-30 01:01:21,948 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-30 01:01:21,948 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2018-01-30 01:01:21,948 INFO L87 Difference]: Start difference. First operand 189 states and 193 transitions. Second operand 28 states. [2018-01-30 01:01:22,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:22,416 INFO L93 Difference]: Finished difference Result 318 states and 327 transitions. [2018-01-30 01:01:22,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-30 01:01:22,416 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 288 [2018-01-30 01:01:22,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:22,417 INFO L225 Difference]: With dead ends: 318 [2018-01-30 01:01:22,417 INFO L226 Difference]: Without dead ends: 215 [2018-01-30 01:01:22,418 INFO L553 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 [2018-01-30 01:01:22,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-01-30 01:01:22,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 205. [2018-01-30 01:01:22,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-01-30 01:01:22,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 209 transitions. [2018-01-30 01:01:22,423 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 209 transitions. Word has length 288 [2018-01-30 01:01:22,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:22,424 INFO L432 AbstractCegarLoop]: Abstraction has 205 states and 209 transitions. [2018-01-30 01:01:22,424 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-30 01:01:22,424 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 209 transitions. [2018-01-30 01:01:22,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-01-30 01:01:22,425 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:22,425 INFO L350 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] [2018-01-30 01:01:22,425 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolation]=== [2018-01-30 01:01:22,425 INFO L82 PathProgramCache]: Analyzing trace with hash -584748275, now seen corresponding path program 10 times [2018-01-30 01:01:22,425 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:22,425 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:22,431 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:22,431 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:01:22,431 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:22,446 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:23,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 1016 trivial. 0 not checked. [2018-01-30 01:01:23,053 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:23,053 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-01-30 01:01:23,057 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 01:01:23,107 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:01:23,110 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:23,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 1016 trivial. 0 not checked. [2018-01-30 01:01:23,192 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:01:23,192 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2018-01-30 01:01:23,192 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-30 01:01:23,193 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-30 01:01:23,193 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-01-30 01:01:23,193 INFO L87 Difference]: Start difference. First operand 205 states and 209 transitions. Second operand 25 states. [2018-01-30 01:01:23,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:23,483 INFO L93 Difference]: Finished difference Result 329 states and 337 transitions. [2018-01-30 01:01:23,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-30 01:01:23,496 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 304 [2018-01-30 01:01:23,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:23,496 INFO L225 Difference]: With dead ends: 329 [2018-01-30 01:01:23,496 INFO L226 Difference]: Without dead ends: 218 [2018-01-30 01:01:23,497 INFO L553 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 [2018-01-30 01:01:23,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-01-30 01:01:23,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 213. [2018-01-30 01:01:23,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-01-30 01:01:23,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 217 transitions. [2018-01-30 01:01:23,502 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 217 transitions. Word has length 304 [2018-01-30 01:01:23,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:23,502 INFO L432 AbstractCegarLoop]: Abstraction has 213 states and 217 transitions. [2018-01-30 01:01:23,502 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-30 01:01:23,502 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 217 transitions. [2018-01-30 01:01:23,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-01-30 01:01:23,503 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:23,503 INFO L350 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] [2018-01-30 01:01:23,503 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolation]=== [2018-01-30 01:01:23,503 INFO L82 PathProgramCache]: Analyzing trace with hash -254219402, now seen corresponding path program 11 times [2018-01-30 01:01:23,503 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:23,503 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:23,504 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:23,504 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:01:23,504 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:23,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:23,528 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:23,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1478 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 1016 trivial. 0 not checked. [2018-01-30 01:01:23,934 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:23,934 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 [2018-01-30 01:01:23,939 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 01:01:23,954 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:23,962 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:23,963 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:23,965 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:23,967 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:23,970 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:23,975 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:23,980 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:23,990 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:24,027 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:24,028 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:01:24,031 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:24,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1478 backedges. 454 proven. 90 refuted. 0 times theorem prover too weak. 934 trivial. 0 not checked. [2018-01-30 01:01:24,185 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:01:24,185 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13] total 36 [2018-01-30 01:01:24,185 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-30 01:01:24,185 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-30 01:01:24,186 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1045, Unknown=0, NotChecked=0, Total=1260 [2018-01-30 01:01:24,186 INFO L87 Difference]: Start difference. First operand 213 states and 217 transitions. Second operand 36 states. [2018-01-30 01:01:25,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:25,223 INFO L93 Difference]: Finished difference Result 350 states and 362 transitions. [2018-01-30 01:01:25,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-01-30 01:01:25,226 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 312 [2018-01-30 01:01:25,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:25,226 INFO L225 Difference]: With dead ends: 350 [2018-01-30 01:01:25,226 INFO L226 Difference]: Without dead ends: 239 [2018-01-30 01:01:25,227 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=895, Invalid=3661, Unknown=0, NotChecked=0, Total=4556 [2018-01-30 01:01:25,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-01-30 01:01:25,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 229. [2018-01-30 01:01:25,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-01-30 01:01:25,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2018-01-30 01:01:25,232 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 312 [2018-01-30 01:01:25,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:25,232 INFO L432 AbstractCegarLoop]: Abstraction has 229 states and 233 transitions. [2018-01-30 01:01:25,232 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-30 01:01:25,232 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 233 transitions. [2018-01-30 01:01:25,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-01-30 01:01:25,233 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:25,234 INFO L350 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] [2018-01-30 01:01:25,234 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolation]=== [2018-01-30 01:01:25,234 INFO L82 PathProgramCache]: Analyzing trace with hash 87027560, now seen corresponding path program 12 times [2018-01-30 01:01:25,234 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:25,234 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:25,234 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:25,234 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:01:25,235 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:25,247 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:26,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1970 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 1418 trivial. 0 not checked. [2018-01-30 01:01:26,327 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:26,327 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 [2018-01-30 01:01:26,332 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 01:01:26,343 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:26,359 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:26,371 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:26,383 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:26,396 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:26,423 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:26,442 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:26,499 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:26,536 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:26,673 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:26,739 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:26,741 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:01:26,744 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:27,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1970 backedges. 644 proven. 56 refuted. 0 times theorem prover too weak. 1270 trivial. 0 not checked. [2018-01-30 01:01:27,515 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:01:27,515 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 11] total 36 [2018-01-30 01:01:27,516 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-30 01:01:27,516 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-30 01:01:27,516 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1031, Unknown=0, NotChecked=0, Total=1260 [2018-01-30 01:01:27,516 INFO L87 Difference]: Start difference. First operand 229 states and 233 transitions. Second operand 36 states. [2018-01-30 01:01:27,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:27,960 INFO L93 Difference]: Finished difference Result 374 states and 383 transitions. [2018-01-30 01:01:27,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-01-30 01:01:27,961 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 344 [2018-01-30 01:01:27,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:27,962 INFO L225 Difference]: With dead ends: 374 [2018-01-30 01:01:27,962 INFO L226 Difference]: Without dead ends: 255 [2018-01-30 01:01:27,963 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=965, Invalid=3591, Unknown=0, NotChecked=0, Total=4556 [2018-01-30 01:01:27,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-01-30 01:01:27,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 245. [2018-01-30 01:01:27,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-01-30 01:01:27,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 249 transitions. [2018-01-30 01:01:27,966 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 249 transitions. Word has length 344 [2018-01-30 01:01:27,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:27,966 INFO L432 AbstractCegarLoop]: Abstraction has 245 states and 249 transitions. [2018-01-30 01:01:27,966 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-30 01:01:27,966 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 249 transitions. [2018-01-30 01:01:27,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-01-30 01:01:27,967 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:27,967 INFO L350 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] [2018-01-30 01:01:27,967 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolation]=== [2018-01-30 01:01:27,968 INFO L82 PathProgramCache]: Analyzing trace with hash -32347320, now seen corresponding path program 13 times [2018-01-30 01:01:27,968 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:27,968 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:27,968 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:27,968 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:01:27,968 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:27,980 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:28,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2102 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2018-01-30 01:01:28,389 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:28,389 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 [2018-01-30 01:01:28,394 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:01:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:28,433 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:28,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2102 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2018-01-30 01:01:28,536 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:01:28,536 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2018-01-30 01:01:28,536 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-30 01:01:28,537 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-30 01:01:28,537 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-30 01:01:28,537 INFO L87 Difference]: Start difference. First operand 245 states and 249 transitions. Second operand 31 states. [2018-01-30 01:01:28,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:28,800 INFO L93 Difference]: Finished difference Result 385 states and 393 transitions. [2018-01-30 01:01:28,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-30 01:01:28,800 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 360 [2018-01-30 01:01:28,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:28,801 INFO L225 Difference]: With dead ends: 385 [2018-01-30 01:01:28,801 INFO L226 Difference]: Without dead ends: 258 [2018-01-30 01:01:28,802 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2018-01-30 01:01:28,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-01-30 01:01:28,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 253. [2018-01-30 01:01:28,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-01-30 01:01:28,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 257 transitions. [2018-01-30 01:01:28,805 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 257 transitions. Word has length 360 [2018-01-30 01:01:28,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:28,805 INFO L432 AbstractCegarLoop]: Abstraction has 253 states and 257 transitions. [2018-01-30 01:01:28,805 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-30 01:01:28,805 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 257 transitions. [2018-01-30 01:01:28,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-01-30 01:01:28,806 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:28,806 INFO L350 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] [2018-01-30 01:01:28,806 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolation]=== [2018-01-30 01:01:28,806 INFO L82 PathProgramCache]: Analyzing trace with hash 716543153, now seen corresponding path program 14 times [2018-01-30 01:01:28,806 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:28,806 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:28,807 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:28,807 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:01:28,807 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:28,818 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:29,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2208 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2018-01-30 01:01:29,556 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:29,556 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 [2018-01-30 01:01:29,561 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 01:01:29,574 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:29,596 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:29,600 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:01:29,603 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:29,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2208 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2018-01-30 01:01:29,682 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:01:29,682 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2018-01-30 01:01:29,683 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-30 01:01:29,683 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-30 01:01:29,683 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-01-30 01:01:29,683 INFO L87 Difference]: Start difference. First operand 253 states and 257 transitions. Second operand 33 states. [2018-01-30 01:01:29,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:29,966 INFO L93 Difference]: Finished difference Result 393 states and 401 transitions. [2018-01-30 01:01:29,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-30 01:01:29,967 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 368 [2018-01-30 01:01:29,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:29,967 INFO L225 Difference]: With dead ends: 393 [2018-01-30 01:01:29,967 INFO L226 Difference]: Without dead ends: 266 [2018-01-30 01:01:29,968 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2018-01-30 01:01:29,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-01-30 01:01:29,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 261. [2018-01-30 01:01:29,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-01-30 01:01:29,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 265 transitions. [2018-01-30 01:01:29,971 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 265 transitions. Word has length 368 [2018-01-30 01:01:29,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:29,972 INFO L432 AbstractCegarLoop]: Abstraction has 261 states and 265 transitions. [2018-01-30 01:01:29,972 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-30 01:01:29,972 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 265 transitions. [2018-01-30 01:01:29,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-01-30 01:01:29,973 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:29,973 INFO L350 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] [2018-01-30 01:01:29,973 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolation]=== [2018-01-30 01:01:29,973 INFO L82 PathProgramCache]: Analyzing trace with hash -902740710, now seen corresponding path program 15 times [2018-01-30 01:01:29,973 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:29,973 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:29,974 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:29,974 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:01:29,974 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:29,986 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:30,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2018-01-30 01:01:30,488 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:30,488 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 [2018-01-30 01:01:30,492 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 01:01:30,504 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:30,516 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:30,533 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:30,542 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:30,551 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:30,604 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:30,652 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:30,654 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:01:30,657 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:30,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 634 proven. 132 refuted. 0 times theorem prover too weak. 1556 trivial. 0 not checked. [2018-01-30 01:01:30,859 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:01:30,859 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 15] total 46 [2018-01-30 01:01:30,859 INFO L409 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-01-30 01:01:30,859 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-01-30 01:01:30,860 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1720, Unknown=0, NotChecked=0, Total=2070 [2018-01-30 01:01:30,860 INFO L87 Difference]: Start difference. First operand 261 states and 265 transitions. Second operand 46 states. [2018-01-30 01:01:31,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:31,481 INFO L93 Difference]: Finished difference Result 414 states and 426 transitions. [2018-01-30 01:01:31,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-01-30 01:01:31,483 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 376 [2018-01-30 01:01:31,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:31,484 INFO L225 Difference]: With dead ends: 414 [2018-01-30 01:01:31,484 INFO L226 Difference]: Without dead ends: 287 [2018-01-30 01:01:31,496 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1478 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1520, Invalid=6136, Unknown=0, NotChecked=0, Total=7656 [2018-01-30 01:01:31,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-01-30 01:01:31,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 277. [2018-01-30 01:01:31,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-01-30 01:01:31,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 281 transitions. [2018-01-30 01:01:31,499 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 281 transitions. Word has length 376 [2018-01-30 01:01:31,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:31,499 INFO L432 AbstractCegarLoop]: Abstraction has 277 states and 281 transitions. [2018-01-30 01:01:31,500 INFO L433 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-01-30 01:01:31,500 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 281 transitions. [2018-01-30 01:01:31,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-01-30 01:01:31,501 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:31,501 INFO L350 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] [2018-01-30 01:01:31,501 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolation]=== [2018-01-30 01:01:31,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1876280076, now seen corresponding path program 16 times [2018-01-30 01:01:31,501 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:31,501 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:31,502 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:31,502 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:01:31,502 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:31,526 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:32,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2918 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 1926 trivial. 0 not checked. [2018-01-30 01:01:32,260 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:32,260 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 [2018-01-30 01:01:32,265 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 01:01:32,386 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:01:32,390 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:32,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2918 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 1926 trivial. 0 not checked. [2018-01-30 01:01:32,611 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:01:32,611 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2018-01-30 01:01:32,611 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-30 01:01:32,611 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-30 01:01:32,612 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2018-01-30 01:01:32,612 INFO L87 Difference]: Start difference. First operand 277 states and 281 transitions. Second operand 37 states. [2018-01-30 01:01:33,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:33,065 INFO L93 Difference]: Finished difference Result 425 states and 433 transitions. [2018-01-30 01:01:33,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-01-30 01:01:33,070 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 408 [2018-01-30 01:01:33,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:33,071 INFO L225 Difference]: With dead ends: 425 [2018-01-30 01:01:33,071 INFO L226 Difference]: Without dead ends: 290 [2018-01-30 01:01:33,072 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2018-01-30 01:01:33,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-01-30 01:01:33,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 285. [2018-01-30 01:01:33,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-01-30 01:01:33,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 289 transitions. [2018-01-30 01:01:33,076 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 289 transitions. Word has length 408 [2018-01-30 01:01:33,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:33,076 INFO L432 AbstractCegarLoop]: Abstraction has 285 states and 289 transitions. [2018-01-30 01:01:33,076 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-30 01:01:33,076 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 289 transitions. [2018-01-30 01:01:33,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-01-30 01:01:33,078 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:33,078 INFO L350 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] [2018-01-30 01:01:33,078 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolation]=== [2018-01-30 01:01:33,078 INFO L82 PathProgramCache]: Analyzing trace with hash -2087512459, now seen corresponding path program 17 times [2018-01-30 01:01:33,078 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:33,078 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:33,078 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:33,079 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:01:33,079 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:33,091 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:33,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3048 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 1926 trivial. 0 not checked. [2018-01-30 01:01:33,754 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:33,754 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 [2018-01-30 01:01:33,759 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 01:01:33,776 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:33,786 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:33,799 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:33,809 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:33,815 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:33,817 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:33,818 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:33,821 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:33,828 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:33,834 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:33,841 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:33,852 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:33,871 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:33,944 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:34,001 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:34,265 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:34,267 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:01:34,270 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:34,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3048 backedges. 854 proven. 182 refuted. 0 times theorem prover too weak. 2012 trivial. 0 not checked. [2018-01-30 01:01:34,709 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:01:34,709 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 17] total 52 [2018-01-30 01:01:34,709 INFO L409 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-01-30 01:01:34,709 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-01-30 01:01:34,710 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=2213, Unknown=0, NotChecked=0, Total=2652 [2018-01-30 01:01:34,710 INFO L87 Difference]: Start difference. First operand 285 states and 289 transitions. Second operand 52 states. [2018-01-30 01:01:35,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:35,461 INFO L93 Difference]: Finished difference Result 446 states and 458 transitions. [2018-01-30 01:01:35,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-01-30 01:01:35,462 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 416 [2018-01-30 01:01:35,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:35,463 INFO L225 Difference]: With dead ends: 446 [2018-01-30 01:01:35,463 INFO L226 Difference]: Without dead ends: 311 [2018-01-30 01:01:35,465 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1937 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1935, Invalid=7965, Unknown=0, NotChecked=0, Total=9900 [2018-01-30 01:01:35,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-01-30 01:01:35,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 301. [2018-01-30 01:01:35,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-01-30 01:01:35,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 305 transitions. [2018-01-30 01:01:35,469 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 305 transitions. Word has length 416 [2018-01-30 01:01:35,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:35,469 INFO L432 AbstractCegarLoop]: Abstraction has 301 states and 305 transitions. [2018-01-30 01:01:35,469 INFO L433 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-01-30 01:01:35,469 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 305 transitions. [2018-01-30 01:01:35,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-01-30 01:01:35,471 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:35,471 INFO L350 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] [2018-01-30 01:01:35,471 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolation]=== [2018-01-30 01:01:35,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1829366169, now seen corresponding path program 18 times [2018-01-30 01:01:35,471 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:35,471 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:35,472 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:35,472 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:01:35,472 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:35,485 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:36,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3732 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 2472 trivial. 0 not checked. [2018-01-30 01:01:36,182 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:36,182 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 [2018-01-30 01:01:36,188 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 01:01:36,201 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:36,202 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:36,206 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:36,208 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:36,218 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:36,230 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:36,240 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:36,279 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:36,289 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:36,325 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:36,362 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:36,405 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:36,557 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:36,558 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:01:36,562 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:36,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3732 backedges. 1108 proven. 90 refuted. 0 times theorem prover too weak. 2534 trivial. 0 not checked. [2018-01-30 01:01:36,862 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:01:36,862 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 13] total 50 [2018-01-30 01:01:36,862 INFO L409 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-01-30 01:01:36,863 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-01-30 01:01:36,863 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=446, Invalid=2004, Unknown=0, NotChecked=0, Total=2450 [2018-01-30 01:01:36,863 INFO L87 Difference]: Start difference. First operand 301 states and 305 transitions. Second operand 50 states. [2018-01-30 01:01:37,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:37,613 INFO L93 Difference]: Finished difference Result 470 states and 479 transitions. [2018-01-30 01:01:37,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-01-30 01:01:37,615 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 448 [2018-01-30 01:01:37,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:37,615 INFO L225 Difference]: With dead ends: 470 [2018-01-30 01:01:37,615 INFO L226 Difference]: Without dead ends: 327 [2018-01-30 01:01:37,616 INFO L553 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 [2018-01-30 01:01:37,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-01-30 01:01:37,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 317. [2018-01-30 01:01:37,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-01-30 01:01:37,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 321 transitions. [2018-01-30 01:01:37,627 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 321 transitions. Word has length 448 [2018-01-30 01:01:37,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:37,627 INFO L432 AbstractCegarLoop]: Abstraction has 317 states and 321 transitions. [2018-01-30 01:01:37,627 INFO L433 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-01-30 01:01:37,627 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 321 transitions. [2018-01-30 01:01:37,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2018-01-30 01:01:37,629 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:37,629 INFO L350 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] [2018-01-30 01:01:37,629 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr0AssertViolation]=== [2018-01-30 01:01:37,629 INFO L82 PathProgramCache]: Analyzing trace with hash 8692295, now seen corresponding path program 19 times [2018-01-30 01:01:37,629 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:37,630 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:37,630 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:37,630 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:01:37,630 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:37,661 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:38,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3920 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 2514 trivial. 0 not checked. [2018-01-30 01:01:38,397 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:38,397 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-01-30 01:01:38,402 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:01:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:38,457 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:38,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3920 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 2514 trivial. 0 not checked. [2018-01-30 01:01:38,861 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:01:38,861 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2018-01-30 01:01:38,862 INFO L409 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-01-30 01:01:38,862 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-01-30 01:01:38,862 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2018-01-30 01:01:38,862 INFO L87 Difference]: Start difference. First operand 317 states and 321 transitions. Second operand 43 states. [2018-01-30 01:01:39,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:39,412 INFO L93 Difference]: Finished difference Result 476 states and 484 transitions. [2018-01-30 01:01:39,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-01-30 01:01:39,412 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 464 [2018-01-30 01:01:39,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:39,413 INFO L225 Difference]: With dead ends: 476 [2018-01-30 01:01:39,413 INFO L226 Difference]: Without dead ends: 325 [2018-01-30 01:01:39,416 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2018-01-30 01:01:39,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-01-30 01:01:39,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2018-01-30 01:01:39,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-01-30 01:01:39,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 329 transitions. [2018-01-30 01:01:39,422 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 329 transitions. Word has length 464 [2018-01-30 01:01:39,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:39,422 INFO L432 AbstractCegarLoop]: Abstraction has 325 states and 329 transitions. [2018-01-30 01:01:39,422 INFO L433 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-01-30 01:01:39,423 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 329 transitions. [2018-01-30 01:01:39,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2018-01-30 01:01:39,424 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:39,424 INFO L350 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] [2018-01-30 01:01:39,424 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr0AssertViolation]=== [2018-01-30 01:01:39,424 INFO L82 PathProgramCache]: Analyzing trace with hash 568633008, now seen corresponding path program 20 times [2018-01-30 01:01:39,424 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:39,424 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:39,425 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:39,425 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:01:39,425 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:39,459 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:39,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4074 backedges. 0 proven. 1338 refuted. 0 times theorem prover too weak. 2736 trivial. 0 not checked. [2018-01-30 01:01:39,862 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:39,862 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 [2018-01-30 01:01:39,871 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 01:01:39,886 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:39,921 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:39,926 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:01:39,929 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:40,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4074 backedges. 1102 proven. 240 refuted. 0 times theorem prover too weak. 2732 trivial. 0 not checked. [2018-01-30 01:01:40,034 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:01:40,034 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-30 01:01:40,035 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-30 01:01:40,035 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-30 01:01:40,035 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-30 01:01:40,035 INFO L87 Difference]: Start difference. First operand 325 states and 329 transitions. Second operand 21 states. [2018-01-30 01:01:40,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:40,172 INFO L93 Difference]: Finished difference Result 488 states and 498 transitions. [2018-01-30 01:01:40,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-30 01:01:40,173 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 472 [2018-01-30 01:01:40,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:40,174 INFO L225 Difference]: With dead ends: 488 [2018-01-30 01:01:40,174 INFO L226 Difference]: Without dead ends: 338 [2018-01-30 01:01:40,174 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2018-01-30 01:01:40,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-01-30 01:01:40,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 333. [2018-01-30 01:01:40,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-01-30 01:01:40,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 337 transitions. [2018-01-30 01:01:40,178 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 337 transitions. Word has length 472 [2018-01-30 01:01:40,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:40,178 INFO L432 AbstractCegarLoop]: Abstraction has 333 states and 337 transitions. [2018-01-30 01:01:40,178 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-30 01:01:40,178 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 337 transitions. [2018-01-30 01:01:40,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2018-01-30 01:01:40,180 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:40,180 INFO L350 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 27, 21, 20, 20, 20, 20, 20, 20, 20, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:01:40,180 INFO L371 AbstractCegarLoop]: === Iteration 25 === [mainErr0AssertViolation]=== [2018-01-30 01:01:40,181 INFO L82 PathProgramCache]: Analyzing trace with hash 568386617, now seen corresponding path program 21 times [2018-01-30 01:01:40,181 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:40,181 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:40,181 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:40,181 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:01:40,181 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:40,199 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:40,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 1684 refuted. 0 times theorem prover too weak. 3008 trivial. 0 not checked. [2018-01-30 01:01:40,622 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:40,622 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 [2018-01-30 01:01:40,626 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 01:01:40,640 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:40,644 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:40,650 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:40,656 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:40,666 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:40,685 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:40,709 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:40,755 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:40,756 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:01:40,759 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:40,943 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 1388 proven. 132 refuted. 0 times theorem prover too weak. 3172 trivial. 0 not checked. [2018-01-30 01:01:40,960 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:01:40,960 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15] total 34 [2018-01-30 01:01:40,960 INFO L409 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-01-30 01:01:40,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-01-30 01:01:40,961 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=940, Unknown=0, NotChecked=0, Total=1122 [2018-01-30 01:01:40,961 INFO L87 Difference]: Start difference. First operand 333 states and 337 transitions. Second operand 34 states. [2018-01-30 01:01:41,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:41,310 INFO L93 Difference]: Finished difference Result 517 states and 528 transitions. [2018-01-30 01:01:41,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-01-30 01:01:41,310 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 496 [2018-01-30 01:01:41,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:41,311 INFO L225 Difference]: With dead ends: 517 [2018-01-30 01:01:41,311 INFO L226 Difference]: Without dead ends: 359 [2018-01-30 01:01:41,312 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 484 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=740, Invalid=3292, Unknown=0, NotChecked=0, Total=4032 [2018-01-30 01:01:41,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-01-30 01:01:41,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 349. [2018-01-30 01:01:41,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-01-30 01:01:41,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 353 transitions. [2018-01-30 01:01:41,315 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 353 transitions. Word has length 496 [2018-01-30 01:01:41,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:41,315 INFO L432 AbstractCegarLoop]: Abstraction has 349 states and 353 transitions. [2018-01-30 01:01:41,315 INFO L433 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-01-30 01:01:41,315 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 353 transitions. [2018-01-30 01:01:41,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2018-01-30 01:01:41,317 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:41,317 INFO L350 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 30, 21, 20, 20, 20, 20, 20, 20, 20, 8, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:01:41,317 INFO L371 AbstractCegarLoop]: === Iteration 26 === [mainErr0AssertViolation]=== [2018-01-30 01:01:41,317 INFO L82 PathProgramCache]: Analyzing trace with hash 511311417, now seen corresponding path program 22 times [2018-01-30 01:01:41,317 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:41,318 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:41,318 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:41,318 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:01:41,318 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:41,332 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:41,935 INFO L134 CoverageAnalysis]: Checked inductivity of 5432 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2018-01-30 01:01:41,936 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:41,936 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 [2018-01-30 01:01:41,960 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 01:01:42,307 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:01:42,311 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:42,515 INFO L134 CoverageAnalysis]: Checked inductivity of 5432 backedges. 1694 proven. 380 refuted. 0 times theorem prover too weak. 3358 trivial. 0 not checked. [2018-01-30 01:01:42,534 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:01:42,534 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2018-01-30 01:01:42,534 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-30 01:01:42,535 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-30 01:01:42,535 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-01-30 01:01:42,535 INFO L87 Difference]: Start difference. First operand 349 states and 353 transitions. Second operand 25 states. [2018-01-30 01:01:42,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:42,736 INFO L93 Difference]: Finished difference Result 536 states and 546 transitions. [2018-01-30 01:01:42,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-30 01:01:42,736 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 528 [2018-01-30 01:01:42,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:42,737 INFO L225 Difference]: With dead ends: 536 [2018-01-30 01:01:42,737 INFO L226 Difference]: Without dead ends: 362 [2018-01-30 01:01:42,737 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2018-01-30 01:01:42,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2018-01-30 01:01:42,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 357. [2018-01-30 01:01:42,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-01-30 01:01:42,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 361 transitions. [2018-01-30 01:01:42,741 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 361 transitions. Word has length 528 [2018-01-30 01:01:42,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:42,741 INFO L432 AbstractCegarLoop]: Abstraction has 357 states and 361 transitions. [2018-01-30 01:01:42,741 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-30 01:01:42,741 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 361 transitions. [2018-01-30 01:01:42,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2018-01-30 01:01:42,743 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:42,743 INFO L350 BasicCegarLoop]: trace histogram [36, 33, 33, 33, 33, 33, 33, 33, 21, 20, 20, 20, 20, 20, 20, 20, 8, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:01:42,743 INFO L371 AbstractCegarLoop]: === Iteration 27 === [mainErr0AssertViolation]=== [2018-01-30 01:01:42,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1281482434, now seen corresponding path program 23 times [2018-01-30 01:01:42,743 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:42,743 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:42,744 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:42,744 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:01:42,744 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:42,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:42,758 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:43,845 INFO L134 CoverageAnalysis]: Checked inductivity of 6194 backedges. 0 proven. 2496 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2018-01-30 01:01:43,846 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:43,846 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-01-30 01:01:43,863 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 01:01:43,875 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:43,885 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:43,894 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:43,897 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:43,899 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:43,901 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:43,903 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:43,906 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:43,911 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:43,916 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:43,924 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:43,936 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:43,943 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:43,956 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:44,004 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:44,083 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:44,280 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:44,554 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:45,001 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:45,003 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:01:45,008 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:45,176 INFO L134 CoverageAnalysis]: Checked inductivity of 6194 backedges. 2038 proven. 462 refuted. 0 times theorem prover too weak. 3694 trivial. 0 not checked. [2018-01-30 01:01:45,194 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:01:45,194 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2018-01-30 01:01:45,195 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-30 01:01:45,195 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-30 01:01:45,195 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2018-01-30 01:01:45,195 INFO L87 Difference]: Start difference. First operand 357 states and 361 transitions. Second operand 27 states. [2018-01-30 01:01:45,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:45,413 INFO L93 Difference]: Finished difference Result 552 states and 562 transitions. [2018-01-30 01:01:45,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-30 01:01:45,414 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 552 [2018-01-30 01:01:45,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:45,415 INFO L225 Difference]: With dead ends: 552 [2018-01-30 01:01:45,415 INFO L226 Difference]: Without dead ends: 370 [2018-01-30 01:01:45,415 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2018-01-30 01:01:45,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2018-01-30 01:01:45,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 365. [2018-01-30 01:01:45,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-01-30 01:01:45,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 369 transitions. [2018-01-30 01:01:45,419 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 369 transitions. Word has length 552 [2018-01-30 01:01:45,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:45,419 INFO L432 AbstractCegarLoop]: Abstraction has 365 states and 369 transitions. [2018-01-30 01:01:45,419 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-30 01:01:45,419 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 369 transitions. [2018-01-30 01:01:45,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2018-01-30 01:01:45,422 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:45,422 INFO L350 BasicCegarLoop]: trace histogram [39, 36, 36, 36, 36, 36, 36, 36, 21, 20, 20, 20, 20, 20, 20, 20, 8, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:01:45,422 INFO L371 AbstractCegarLoop]: === Iteration 28 === [mainErr0AssertViolation]=== [2018-01-30 01:01:45,422 INFO L82 PathProgramCache]: Analyzing trace with hash 412841035, now seen corresponding path program 24 times [2018-01-30 01:01:45,422 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:45,422 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:45,423 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:45,423 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:01:45,423 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:45,437 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:46,178 INFO L134 CoverageAnalysis]: Checked inductivity of 7028 backedges. 0 proven. 2962 refuted. 0 times theorem prover too weak. 4066 trivial. 0 not checked. [2018-01-30 01:01:46,178 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:46,178 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 [2018-01-30 01:01:46,183 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 01:01:46,197 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:46,199 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:46,203 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:46,206 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:46,212 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:46,229 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:46,238 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:46,258 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:46,271 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:46,342 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:46,410 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:46,466 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:46,559 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:46,903 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:47,003 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:47,565 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:47,948 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:01:47,951 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:01:47,957 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:48,341 INFO L134 CoverageAnalysis]: Checked inductivity of 7028 backedges. 2574 proven. 182 refuted. 0 times theorem prover too weak. 4272 trivial. 0 not checked. [2018-01-30 01:01:48,359 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:01:48,359 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 20] total 45 [2018-01-30 01:01:48,360 INFO L409 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-01-30 01:01:48,360 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-01-30 01:01:48,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1699, Unknown=0, NotChecked=0, Total=1980 [2018-01-30 01:01:48,360 INFO L87 Difference]: Start difference. First operand 365 states and 369 transitions. Second operand 45 states. [2018-01-30 01:01:49,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:49,579 INFO L93 Difference]: Finished difference Result 581 states and 592 transitions. [2018-01-30 01:01:49,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-01-30 01:01:49,579 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 576 [2018-01-30 01:01:49,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:49,581 INFO L225 Difference]: With dead ends: 581 [2018-01-30 01:01:49,581 INFO L226 Difference]: Without dead ends: 391 [2018-01-30 01:01:49,582 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 559 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1752 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1342, Invalid=7214, Unknown=0, NotChecked=0, Total=8556 [2018-01-30 01:01:49,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-01-30 01:01:49,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 381. [2018-01-30 01:01:49,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-01-30 01:01:49,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 385 transitions. [2018-01-30 01:01:49,592 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 385 transitions. Word has length 576 [2018-01-30 01:01:49,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:49,599 INFO L432 AbstractCegarLoop]: Abstraction has 381 states and 385 transitions. [2018-01-30 01:01:49,599 INFO L433 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-01-30 01:01:49,599 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 385 transitions. [2018-01-30 01:01:49,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2018-01-30 01:01:49,601 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:49,601 INFO L350 BasicCegarLoop]: trace histogram [42, 39, 39, 39, 39, 39, 39, 39, 21, 20, 20, 20, 20, 20, 20, 20, 9, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:01:49,601 INFO L371 AbstractCegarLoop]: === Iteration 29 === [mainErr0AssertViolation]=== [2018-01-30 01:01:49,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1048455755, now seen corresponding path program 25 times [2018-01-30 01:01:49,602 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:49,602 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:49,604 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:49,604 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:01:49,604 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:49,628 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:50,259 INFO L134 CoverageAnalysis]: Checked inductivity of 7992 backedges. 0 proven. 3468 refuted. 0 times theorem prover too weak. 4524 trivial. 0 not checked. [2018-01-30 01:01:50,259 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:50,259 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 [2018-01-30 01:01:50,264 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:01:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:50,324 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:50,458 INFO L134 CoverageAnalysis]: Checked inductivity of 7992 backedges. 2822 proven. 650 refuted. 0 times theorem prover too weak. 4520 trivial. 0 not checked. [2018-01-30 01:01:50,475 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:01:50,475 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2018-01-30 01:01:50,476 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-30 01:01:50,476 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-30 01:01:50,476 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-30 01:01:50,476 INFO L87 Difference]: Start difference. First operand 381 states and 385 transitions. Second operand 31 states. [2018-01-30 01:01:50,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:50,936 INFO L93 Difference]: Finished difference Result 600 states and 610 transitions. [2018-01-30 01:01:50,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-30 01:01:50,936 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 608 [2018-01-30 01:01:50,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:50,937 INFO L225 Difference]: With dead ends: 600 [2018-01-30 01:01:50,937 INFO L226 Difference]: Without dead ends: 394 [2018-01-30 01:01:50,938 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2018-01-30 01:01:50,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2018-01-30 01:01:50,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 389. [2018-01-30 01:01:50,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-01-30 01:01:50,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 393 transitions. [2018-01-30 01:01:50,941 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 393 transitions. Word has length 608 [2018-01-30 01:01:50,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:50,941 INFO L432 AbstractCegarLoop]: Abstraction has 389 states and 393 transitions. [2018-01-30 01:01:50,941 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-30 01:01:50,941 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 393 transitions. [2018-01-30 01:01:50,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2018-01-30 01:01:50,944 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:50,944 INFO L350 BasicCegarLoop]: trace histogram [45, 42, 42, 42, 42, 42, 42, 42, 21, 20, 20, 20, 20, 20, 20, 20, 9, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:01:50,944 INFO L371 AbstractCegarLoop]: === Iteration 30 === [mainErr0AssertViolation]=== [2018-01-30 01:01:50,944 INFO L82 PathProgramCache]: Analyzing trace with hash -133864748, now seen corresponding path program 26 times [2018-01-30 01:01:50,944 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:50,944 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:50,945 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:50,945 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:01:50,945 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:50,959 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:51,749 INFO L134 CoverageAnalysis]: Checked inductivity of 8970 backedges. 0 proven. 4014 refuted. 0 times theorem prover too weak. 4956 trivial. 0 not checked. [2018-01-30 01:01:51,750 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:51,750 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 [2018-01-30 01:01:51,754 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 01:01:51,771 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:51,808 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:01:51,815 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:01:51,819 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:51,930 INFO L134 CoverageAnalysis]: Checked inductivity of 8970 backedges. 3262 proven. 756 refuted. 0 times theorem prover too weak. 4952 trivial. 0 not checked. [2018-01-30 01:01:51,947 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:01:51,947 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2018-01-30 01:01:51,948 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-30 01:01:51,948 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-30 01:01:51,948 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-01-30 01:01:51,948 INFO L87 Difference]: Start difference. First operand 389 states and 393 transitions. Second operand 33 states. [2018-01-30 01:01:52,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:52,295 INFO L93 Difference]: Finished difference Result 616 states and 626 transitions. [2018-01-30 01:01:52,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-30 01:01:52,295 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 632 [2018-01-30 01:01:52,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:52,296 INFO L225 Difference]: With dead ends: 616 [2018-01-30 01:01:52,296 INFO L226 Difference]: Without dead ends: 402 [2018-01-30 01:01:52,297 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2018-01-30 01:01:52,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2018-01-30 01:01:52,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 397. [2018-01-30 01:01:52,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-01-30 01:01:52,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 401 transitions. [2018-01-30 01:01:52,300 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 401 transitions. Word has length 632 [2018-01-30 01:01:52,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:52,301 INFO L432 AbstractCegarLoop]: Abstraction has 397 states and 401 transitions. [2018-01-30 01:01:52,301 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-30 01:01:52,301 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 401 transitions. [2018-01-30 01:01:52,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2018-01-30 01:01:52,303 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:52,304 INFO L350 BasicCegarLoop]: trace histogram [48, 45, 45, 45, 45, 45, 45, 45, 21, 20, 20, 20, 20, 20, 20, 20, 9, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:01:52,304 INFO L371 AbstractCegarLoop]: === Iteration 31 === [mainErr0AssertViolation]=== [2018-01-30 01:01:52,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1687793571, now seen corresponding path program 27 times [2018-01-30 01:01:52,304 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:52,304 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:52,304 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:52,305 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:01:52,305 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:52,320 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:53,156 INFO L134 CoverageAnalysis]: Checked inductivity of 10020 backedges. 0 proven. 4600 refuted. 0 times theorem prover too weak. 5420 trivial. 0 not checked. [2018-01-30 01:01:53,157 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:53,157 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 [2018-01-30 01:01:53,161 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 01:01:53,176 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:53,180 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:53,185 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:53,192 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:53,204 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:53,217 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:53,232 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:53,270 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:53,330 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:53,351 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:01:53,352 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:01:53,357 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:53,702 INFO L134 CoverageAnalysis]: Checked inductivity of 10020 backedges. 3894 proven. 240 refuted. 0 times theorem prover too weak. 5886 trivial. 0 not checked. [2018-01-30 01:01:53,719 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:01:53,719 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 22] total 53 [2018-01-30 01:01:53,720 INFO L409 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-01-30 01:01:53,720 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-01-30 01:01:53,720 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=2363, Unknown=0, NotChecked=0, Total=2756 [2018-01-30 01:01:53,720 INFO L87 Difference]: Start difference. First operand 397 states and 401 transitions. Second operand 53 states. [2018-01-30 01:01:57,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:57,387 INFO L93 Difference]: Finished difference Result 645 states and 656 transitions. [2018-01-30 01:01:57,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-01-30 01:01:57,388 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 656 [2018-01-30 01:01:57,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:57,389 INFO L225 Difference]: With dead ends: 645 [2018-01-30 01:01:57,389 INFO L226 Difference]: Without dead ends: 423 [2018-01-30 01:01:57,390 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2487 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1901, Invalid=10089, Unknown=0, NotChecked=0, Total=11990 [2018-01-30 01:01:57,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-01-30 01:01:57,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 413. [2018-01-30 01:01:57,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-01-30 01:01:57,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 417 transitions. [2018-01-30 01:01:57,394 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 417 transitions. Word has length 656 [2018-01-30 01:01:57,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:57,394 INFO L432 AbstractCegarLoop]: Abstraction has 413 states and 417 transitions. [2018-01-30 01:01:57,394 INFO L433 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-01-30 01:01:57,394 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 417 transitions. [2018-01-30 01:01:57,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2018-01-30 01:01:57,397 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:57,397 INFO L350 BasicCegarLoop]: trace histogram [51, 48, 48, 48, 48, 48, 48, 48, 21, 20, 20, 20, 20, 20, 20, 20, 10, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:01:57,397 INFO L371 AbstractCegarLoop]: === Iteration 32 === [mainErr0AssertViolation]=== [2018-01-30 01:01:57,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1645305251, now seen corresponding path program 28 times [2018-01-30 01:01:57,397 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:57,398 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:57,398 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:57,398 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:01:57,398 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:57,413 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:01:58,367 INFO L134 CoverageAnalysis]: Checked inductivity of 11208 backedges. 0 proven. 5226 refuted. 0 times theorem prover too weak. 5982 trivial. 0 not checked. [2018-01-30 01:01:58,367 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:01:58,368 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 [2018-01-30 01:01:58,375 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 01:01:58,983 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:01:58,989 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:01:59,143 INFO L134 CoverageAnalysis]: Checked inductivity of 11208 backedges. 4238 proven. 992 refuted. 0 times theorem prover too weak. 5978 trivial. 0 not checked. [2018-01-30 01:01:59,163 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:01:59,164 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2018-01-30 01:01:59,164 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-30 01:01:59,164 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-30 01:01:59,164 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2018-01-30 01:01:59,164 INFO L87 Difference]: Start difference. First operand 413 states and 417 transitions. Second operand 37 states. [2018-01-30 01:01:59,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:01:59,528 INFO L93 Difference]: Finished difference Result 664 states and 674 transitions. [2018-01-30 01:01:59,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-01-30 01:01:59,528 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 688 [2018-01-30 01:01:59,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:01:59,529 INFO L225 Difference]: With dead ends: 664 [2018-01-30 01:01:59,529 INFO L226 Difference]: Without dead ends: 426 [2018-01-30 01:01:59,529 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 687 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2018-01-30 01:01:59,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2018-01-30 01:01:59,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 421. [2018-01-30 01:01:59,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-01-30 01:01:59,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 425 transitions. [2018-01-30 01:01:59,536 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 425 transitions. Word has length 688 [2018-01-30 01:01:59,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:01:59,537 INFO L432 AbstractCegarLoop]: Abstraction has 421 states and 425 transitions. [2018-01-30 01:01:59,537 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-30 01:01:59,537 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 425 transitions. [2018-01-30 01:01:59,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 713 [2018-01-30 01:01:59,540 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:01:59,540 INFO L350 BasicCegarLoop]: trace histogram [54, 51, 51, 51, 51, 51, 51, 51, 21, 20, 20, 20, 20, 20, 20, 20, 10, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:01:59,540 INFO L371 AbstractCegarLoop]: === Iteration 33 === [mainErr0AssertViolation]=== [2018-01-30 01:01:59,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1979763994, now seen corresponding path program 29 times [2018-01-30 01:01:59,540 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:01:59,540 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:01:59,541 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:59,541 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:01:59,541 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:01:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:01:59,558 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:02:00,889 INFO L134 CoverageAnalysis]: Checked inductivity of 12402 backedges. 0 proven. 5892 refuted. 0 times theorem prover too weak. 6510 trivial. 0 not checked. [2018-01-30 01:02:00,890 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:02:00,890 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 [2018-01-30 01:02:00,894 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 01:02:00,910 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:00,911 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:00,913 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:00,916 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:00,920 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:00,924 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:00,929 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:00,934 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:00,941 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:00,948 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:00,957 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:00,966 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:01,000 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:01,151 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:01,317 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:01,529 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:02,058 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:02,836 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:03,878 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:03,880 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:02:03,887 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:02:04,034 INFO L134 CoverageAnalysis]: Checked inductivity of 12402 backedges. 4774 proven. 1122 refuted. 0 times theorem prover too weak. 6506 trivial. 0 not checked. [2018-01-30 01:02:04,054 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:02:04,054 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2018-01-30 01:02:04,055 INFO L409 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-01-30 01:02:04,055 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-01-30 01:02:04,055 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2018-01-30 01:02:04,055 INFO L87 Difference]: Start difference. First operand 421 states and 425 transitions. Second operand 39 states. [2018-01-30 01:02:04,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:02:04,463 INFO L93 Difference]: Finished difference Result 680 states and 690 transitions. [2018-01-30 01:02:04,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-01-30 01:02:04,463 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 712 [2018-01-30 01:02:04,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:02:04,464 INFO L225 Difference]: With dead ends: 680 [2018-01-30 01:02:04,464 INFO L226 Difference]: Without dead ends: 434 [2018-01-30 01:02:04,464 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 711 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2018-01-30 01:02:04,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-01-30 01:02:04,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 429. [2018-01-30 01:02:04,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2018-01-30 01:02:04,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 433 transitions. [2018-01-30 01:02:04,469 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 433 transitions. Word has length 712 [2018-01-30 01:02:04,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:02:04,469 INFO L432 AbstractCegarLoop]: Abstraction has 429 states and 433 transitions. [2018-01-30 01:02:04,469 INFO L433 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-01-30 01:02:04,469 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 433 transitions. [2018-01-30 01:02:04,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2018-01-30 01:02:04,472 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:02:04,472 INFO L350 BasicCegarLoop]: trace histogram [57, 54, 54, 54, 54, 54, 54, 54, 21, 20, 20, 20, 20, 20, 20, 20, 10, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:02:04,472 INFO L371 AbstractCegarLoop]: === Iteration 34 === [mainErr0AssertViolation]=== [2018-01-30 01:02:04,472 INFO L82 PathProgramCache]: Analyzing trace with hash -311330705, now seen corresponding path program 30 times [2018-01-30 01:02:04,472 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:02:04,472 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:02:04,473 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:02:04,473 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:02:04,473 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:02:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:02:04,488 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:02:05,609 INFO L134 CoverageAnalysis]: Checked inductivity of 13668 backedges. 0 proven. 6598 refuted. 0 times theorem prover too weak. 7070 trivial. 0 not checked. [2018-01-30 01:02:05,609 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:02:05,609 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 [2018-01-30 01:02:05,614 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 01:02:05,632 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:02:05,634 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:02:05,638 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:02:05,642 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:02:05,647 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:02:05,667 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:02:05,693 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:02:05,732 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:02:05,752 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:02:05,829 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:02:05,888 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:02:05,951 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:02:05,981 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:02:06,175 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:02:06,216 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:02:06,392 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:02:06,796 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:02:06,886 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:02:06,967 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:02:07,065 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:02:07,317 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:02:07,321 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:02:07,329 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:02:07,766 INFO L134 CoverageAnalysis]: Checked inductivity of 13668 backedges. 5502 proven. 306 refuted. 0 times theorem prover too weak. 7860 trivial. 0 not checked. [2018-01-30 01:02:07,787 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:02:07,787 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 24] total 61 [2018-01-30 01:02:07,788 INFO L409 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-01-30 01:02:07,788 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-01-30 01:02:07,788 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=525, Invalid=3135, Unknown=0, NotChecked=0, Total=3660 [2018-01-30 01:02:07,788 INFO L87 Difference]: Start difference. First operand 429 states and 433 transitions. Second operand 61 states. [2018-01-30 01:02:09,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:02:09,084 INFO L93 Difference]: Finished difference Result 709 states and 720 transitions. [2018-01-30 01:02:09,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-01-30 01:02:09,084 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 736 [2018-01-30 01:02:09,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:02:09,085 INFO L225 Difference]: With dead ends: 709 [2018-01-30 01:02:09,085 INFO L226 Difference]: Without dead ends: 455 [2018-01-30 01:02:09,087 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 715 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3348 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2564, Invalid=13438, Unknown=0, NotChecked=0, Total=16002 [2018-01-30 01:02:09,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2018-01-30 01:02:09,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 445. [2018-01-30 01:02:09,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2018-01-30 01:02:09,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 449 transitions. [2018-01-30 01:02:09,098 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 449 transitions. Word has length 736 [2018-01-30 01:02:09,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:02:09,098 INFO L432 AbstractCegarLoop]: Abstraction has 445 states and 449 transitions. [2018-01-30 01:02:09,098 INFO L433 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-01-30 01:02:09,098 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 449 transitions. [2018-01-30 01:02:09,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2018-01-30 01:02:09,108 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:02:09,108 INFO L350 BasicCegarLoop]: trace histogram [60, 57, 57, 57, 57, 57, 57, 57, 21, 20, 20, 20, 20, 20, 20, 20, 11, 10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:02:09,108 INFO L371 AbstractCegarLoop]: === Iteration 35 === [mainErr0AssertViolation]=== [2018-01-30 01:02:09,108 INFO L82 PathProgramCache]: Analyzing trace with hash 335242863, now seen corresponding path program 31 times [2018-01-30 01:02:09,108 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:02:09,108 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:02:09,109 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:02:09,109 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:02:09,109 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:02:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:02:09,125 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:02:10,443 INFO L134 CoverageAnalysis]: Checked inductivity of 15080 backedges. 0 proven. 7344 refuted. 0 times theorem prover too weak. 7736 trivial. 0 not checked. [2018-01-30 01:02:10,443 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:02:10,443 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 [2018-01-30 01:02:10,447 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:02:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:02:10,520 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:02:10,762 INFO L134 CoverageAnalysis]: Checked inductivity of 15080 backedges. 5942 proven. 1406 refuted. 0 times theorem prover too weak. 7732 trivial. 0 not checked. [2018-01-30 01:02:10,779 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:02:10,779 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2018-01-30 01:02:10,780 INFO L409 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-01-30 01:02:10,780 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-01-30 01:02:10,780 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2018-01-30 01:02:10,780 INFO L87 Difference]: Start difference. First operand 445 states and 449 transitions. Second operand 43 states. [2018-01-30 01:02:11,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:02:11,299 INFO L93 Difference]: Finished difference Result 723 states and 733 transitions. [2018-01-30 01:02:11,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-01-30 01:02:11,299 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 768 [2018-01-30 01:02:11,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:02:11,300 INFO L225 Difference]: With dead ends: 723 [2018-01-30 01:02:11,300 INFO L226 Difference]: Without dead ends: 453 [2018-01-30 01:02:11,301 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 846 GetRequests, 767 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2018-01-30 01:02:11,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2018-01-30 01:02:11,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 453. [2018-01-30 01:02:11,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2018-01-30 01:02:11,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 457 transitions. [2018-01-30 01:02:11,305 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 457 transitions. Word has length 768 [2018-01-30 01:02:11,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:02:11,305 INFO L432 AbstractCegarLoop]: Abstraction has 453 states and 457 transitions. [2018-01-30 01:02:11,305 INFO L433 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-01-30 01:02:11,305 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 457 transitions. [2018-01-30 01:02:11,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2018-01-30 01:02:11,308 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:02:11,308 INFO L350 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 60, 60, 60, 21, 20, 20, 20, 20, 20, 20, 20, 11, 10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:02:11,309 INFO L371 AbstractCegarLoop]: === Iteration 36 === [mainErr0AssertViolation]=== [2018-01-30 01:02:11,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1216393480, now seen corresponding path program 32 times [2018-01-30 01:02:11,309 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:02:11,309 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:02:11,309 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:02:11,309 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:02:11,309 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:02:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:02:11,327 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:02:12,123 INFO L134 CoverageAnalysis]: Checked inductivity of 16490 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 16110 trivial. 0 not checked. [2018-01-30 01:02:12,123 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:02:12,123 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 [2018-01-30 01:02:12,128 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 01:02:12,148 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:12,193 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:12,202 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:02:12,206 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:02:12,381 INFO L134 CoverageAnalysis]: Checked inductivity of 16490 backedges. 6580 proven. 380 refuted. 0 times theorem prover too weak. 9530 trivial. 0 not checked. [2018-01-30 01:02:12,398 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:02:12,399 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2018-01-30 01:02:12,399 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-30 01:02:12,399 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-30 01:02:12,399 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-01-30 01:02:12,399 INFO L87 Difference]: Start difference. First operand 453 states and 457 transitions. Second operand 25 states. [2018-01-30 01:02:12,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:02:12,578 INFO L93 Difference]: Finished difference Result 644 states and 649 transitions. [2018-01-30 01:02:12,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-30 01:02:12,580 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 792 [2018-01-30 01:02:12,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:02:12,581 INFO L225 Difference]: With dead ends: 644 [2018-01-30 01:02:12,581 INFO L226 Difference]: Without dead ends: 466 [2018-01-30 01:02:12,582 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 791 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2018-01-30 01:02:12,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2018-01-30 01:02:12,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 461. [2018-01-30 01:02:12,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-01-30 01:02:12,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 465 transitions. [2018-01-30 01:02:12,589 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 465 transitions. Word has length 792 [2018-01-30 01:02:12,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:02:12,590 INFO L432 AbstractCegarLoop]: Abstraction has 461 states and 465 transitions. [2018-01-30 01:02:12,590 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-30 01:02:12,590 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 465 transitions. [2018-01-30 01:02:12,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2018-01-30 01:02:12,593 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:02:12,593 INFO L350 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 60, 60, 60, 21, 20, 20, 20, 20, 20, 20, 20, 12, 11, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:02:12,593 INFO L371 AbstractCegarLoop]: === Iteration 37 === [mainErr0AssertViolation]=== [2018-01-30 01:02:12,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1293096047, now seen corresponding path program 33 times [2018-01-30 01:02:12,593 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:02:12,593 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:02:12,594 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:02:12,594 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:02:12,594 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:02:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:02:12,613 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:02:13,473 INFO L134 CoverageAnalysis]: Checked inductivity of 16572 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 16110 trivial. 0 not checked. [2018-01-30 01:02:13,474 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:02:13,474 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 [2018-01-30 01:02:13,482 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 01:02:13,501 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:02:13,505 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:02:13,516 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:02:13,524 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:02:13,539 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:02:13,552 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:02:13,578 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:02:13,617 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:02:13,665 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:02:13,788 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:02:13,903 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:02:14,203 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:02:14,296 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:02:14,299 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:02:14,305 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:02:14,492 INFO L134 CoverageAnalysis]: Checked inductivity of 16572 backedges. 6734 proven. 462 refuted. 0 times theorem prover too weak. 9376 trivial. 0 not checked. [2018-01-30 01:02:14,510 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:02:14,510 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 28] total 30 [2018-01-30 01:02:14,511 INFO L409 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-01-30 01:02:14,511 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-01-30 01:02:14,511 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2018-01-30 01:02:14,511 INFO L87 Difference]: Start difference. First operand 461 states and 465 transitions. Second operand 30 states. [2018-01-30 01:02:14,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:02:14,916 INFO L93 Difference]: Finished difference Result 652 states and 657 transitions. [2018-01-30 01:02:14,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-30 01:02:14,916 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 800 [2018-01-30 01:02:14,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:02:14,917 INFO L225 Difference]: With dead ends: 652 [2018-01-30 01:02:14,917 INFO L226 Difference]: Without dead ends: 474 [2018-01-30 01:02:14,917 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 860 GetRequests, 796 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1111, Invalid=3179, Unknown=0, NotChecked=0, Total=4290 [2018-01-30 01:02:14,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2018-01-30 01:02:14,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 469. [2018-01-30 01:02:14,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2018-01-30 01:02:14,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 473 transitions. [2018-01-30 01:02:14,921 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 473 transitions. Word has length 800 [2018-01-30 01:02:14,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:02:14,921 INFO L432 AbstractCegarLoop]: Abstraction has 469 states and 473 transitions. [2018-01-30 01:02:14,921 INFO L433 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-01-30 01:02:14,921 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 473 transitions. [2018-01-30 01:02:14,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2018-01-30 01:02:14,924 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:02:14,925 INFO L350 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 60, 60, 60, 21, 20, 20, 20, 20, 20, 20, 20, 13, 12, 12, 12, 12, 12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:02:14,925 INFO L371 AbstractCegarLoop]: === Iteration 38 === [mainErr0AssertViolation]=== [2018-01-30 01:02:14,925 INFO L82 PathProgramCache]: Analyzing trace with hash 887190246, now seen corresponding path program 34 times [2018-01-30 01:02:14,925 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:02:14,925 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:02:14,925 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:02:14,925 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:02:14,925 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:02:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:02:14,942 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:02:15,844 INFO L134 CoverageAnalysis]: Checked inductivity of 16662 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 16110 trivial. 0 not checked. [2018-01-30 01:02:15,845 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:02:15,845 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 [2018-01-30 01:02:15,849 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 01:02:16,723 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:02:16,729 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:02:16,922 INFO L134 CoverageAnalysis]: Checked inductivity of 16662 backedges. 6580 proven. 552 refuted. 0 times theorem prover too weak. 9530 trivial. 0 not checked. [2018-01-30 01:02:16,942 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:02:16,943 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2018-01-30 01:02:16,943 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-30 01:02:16,943 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-30 01:02:16,943 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2018-01-30 01:02:16,943 INFO L87 Difference]: Start difference. First operand 469 states and 473 transitions. Second operand 29 states. [2018-01-30 01:02:17,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:02:17,187 INFO L93 Difference]: Finished difference Result 660 states and 665 transitions. [2018-01-30 01:02:17,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-01-30 01:02:17,188 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 808 [2018-01-30 01:02:17,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:02:17,189 INFO L225 Difference]: With dead ends: 660 [2018-01-30 01:02:17,189 INFO L226 Difference]: Without dead ends: 482 [2018-01-30 01:02:17,189 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 858 GetRequests, 807 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2018-01-30 01:02:17,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2018-01-30 01:02:17,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 477. [2018-01-30 01:02:17,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2018-01-30 01:02:17,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 481 transitions. [2018-01-30 01:02:17,193 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 481 transitions. Word has length 808 [2018-01-30 01:02:17,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:02:17,193 INFO L432 AbstractCegarLoop]: Abstraction has 477 states and 481 transitions. [2018-01-30 01:02:17,193 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-30 01:02:17,193 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 481 transitions. [2018-01-30 01:02:17,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2018-01-30 01:02:17,196 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:02:17,196 INFO L350 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 60, 60, 60, 21, 20, 20, 20, 20, 20, 20, 20, 14, 13, 13, 13, 13, 13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:02:17,196 INFO L371 AbstractCegarLoop]: === Iteration 39 === [mainErr0AssertViolation]=== [2018-01-30 01:02:17,197 INFO L82 PathProgramCache]: Analyzing trace with hash 2067884637, now seen corresponding path program 35 times [2018-01-30 01:02:17,197 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:02:17,197 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:02:17,197 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:02:17,197 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:02:17,197 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:02:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:02:17,214 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:02:18,168 INFO L134 CoverageAnalysis]: Checked inductivity of 16760 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 16110 trivial. 0 not checked. [2018-01-30 01:02:18,168 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:02:18,168 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 [2018-01-30 01:02:18,173 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 01:02:18,190 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:18,192 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:18,194 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:18,197 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:18,200 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:18,204 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:18,208 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:18,212 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:18,218 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:18,225 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:18,247 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:18,262 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:18,300 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:18,339 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:18,417 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:18,463 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:18,630 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:18,765 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:19,514 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command Received shutdown request... [2018-01-30 01:02:21,510 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:22,824 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:24,682 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:02:24,688 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:02:24,699 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:02:24,704 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-30 01:02:24,704 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-30 01:02:24,706 WARN L185 ceAbstractionStarter]: Timeout [2018-01-30 01:02:24,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 01:02:24 BoogieIcfgContainer [2018-01-30 01:02:24,707 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-30 01:02:24,707 INFO L168 Benchmark]: Toolchain (without parser) took 70343.83 ms. Allocated memory was 148.9 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 113.9 MB in the beginning and 226.4 MB in the end (delta: -112.5 MB). Peak memory consumption was 1.8 GB. Max. memory is 5.3 GB. [2018-01-30 01:02:24,708 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 148.9 MB. Free memory is still 118.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-30 01:02:24,708 INFO L168 Benchmark]: CACSL2BoogieTranslator took 112.97 ms. Allocated memory is still 148.9 MB. Free memory was 113.9 MB in the beginning and 105.1 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 5.3 GB. [2018-01-30 01:02:24,708 INFO L168 Benchmark]: Boogie Preprocessor took 20.10 ms. Allocated memory is still 148.9 MB. Free memory was 105.1 MB in the beginning and 103.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 5.3 GB. [2018-01-30 01:02:24,708 INFO L168 Benchmark]: RCFGBuilder took 396.43 ms. Allocated memory is still 148.9 MB. Free memory was 103.4 MB in the beginning and 85.0 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 5.3 GB. [2018-01-30 01:02:24,708 INFO L168 Benchmark]: TraceAbstraction took 69812.02 ms. Allocated memory was 148.9 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 85.0 MB in the beginning and 226.4 MB in the end (delta: -141.4 MB). Peak memory consumption was 1.8 GB. Max. memory is 5.3 GB. [2018-01-30 01:02:24,709 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 148.9 MB. Free memory is still 118.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 112.97 ms. Allocated memory is still 148.9 MB. Free memory was 113.9 MB in the beginning and 105.1 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 20.10 ms. Allocated memory is still 148.9 MB. Free memory was 105.1 MB in the beginning and 103.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 5.3 GB. * RCFGBuilder took 396.43 ms. Allocated memory is still 148.9 MB. Free memory was 103.4 MB in the beginning and 85.0 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 69812.02 ms. Allocated memory was 148.9 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 85.0 MB in the beginning and 226.4 MB in the end (delta: -141.4 MB). Peak memory consumption was 1.8 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 817 with TraceHistMax 63, 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, 69.7s OverallTime, 39 OverallIterations, 63 TraceHistogramMax, 17.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2616 SDtfs, 3179 SDslu, 45532 SDs, 0 SdLazy, 6589 SolverSat, 732 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17612 GetRequests, 15628 SyntacticMatches, 0 SemanticMatches, 1984 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27908 ImplicationChecksByTransitivity, 26.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=477occurred in iteration=38, 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: 0.1s AutomataMinimizationTime, 38 MinimizatonAttempts, 255 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 13.2s SatisfiabilityAnalysisTime, 26.9s InterpolantComputationTime, 31739 NumberOfCodeBlocks, 30172 NumberOfCodeBlocksAsserted, 254 NumberOfCheckSat, 31665 ConstructedInterpolants, 0 QuantifiedInterpolants, 22994265 SizeOfPredicates, 678 NumberOfNonLiveVariables, 22002 ConjunctsInSsa, 784 ConjunctsInUnsatCore, 74 InterpolantComputations, 4 PerfectInterpolantSequences, 303721/376061 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/sum20_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-30_01-02-24-713.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum20_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-30_01-02-24-713.csv Completed graceful shutdown