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/avg60_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cceb4a-m [2018-01-30 00:41:20,168 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-30 00:41:20,169 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-30 00:41:20,178 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-30 00:41:20,178 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-30 00:41:20,179 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-30 00:41:20,179 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-30 00:41:20,180 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-30 00:41:20,181 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-30 00:41:20,182 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-30 00:41:20,182 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-30 00:41:20,182 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-30 00:41:20,183 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-30 00:41:20,183 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-30 00:41:20,184 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-30 00:41:20,185 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-30 00:41:20,186 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-30 00:41:20,187 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-30 00:41:20,188 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-30 00:41:20,188 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-30 00:41:20,189 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-30 00:41:20,193 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 00:41:20,198 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-30 00:41:20,198 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-30 00:41:20,198 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-30 00:41:20,198 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-30 00:41:20,198 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-30 00:41:20,199 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-30 00:41:20,199 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-30 00:41:20,199 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-30 00:41:20,199 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-30 00:41:20,199 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-30 00:41:20,199 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-30 00:41:20,199 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-30 00:41:20,199 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-30 00:41:20,199 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-30 00:41:20,200 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-30 00:41:20,200 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-30 00:41:20,200 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-30 00:41:20,200 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-30 00:41:20,200 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-30 00:41:20,200 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-30 00:41:20,200 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-30 00:41:20,200 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-30 00:41:20,200 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-30 00:41:20,200 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-30 00:41:20,200 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-30 00:41:20,201 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-30 00:41:20,201 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-30 00:41:20,201 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-30 00:41:20,201 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-30 00:41:20,201 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-30 00:41:20,201 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-30 00:41:20,201 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-30 00:41:20,201 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-30 00:41:20,202 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-30 00:41:20,219 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-30 00:41:20,227 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-30 00:41:20,229 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-30 00:41:20,230 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-30 00:41:20,230 INFO L276 PluginConnector]: CDTParser initialized [2018-01-30 00:41:20,231 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/avg60_true-unreach-call.i [2018-01-30 00:41:20,294 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-30 00:41:20,294 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-30 00:41:20,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-30 00:41:20,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-30 00:41:20,299 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-30 00:41:20,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 12:41:20" (1/1) ... [2018-01-30 00:41:20,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1292b91d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:41:20, skipping insertion in model container [2018-01-30 00:41:20,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 12:41:20" (1/1) ... [2018-01-30 00:41:20,311 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 00:41:20,320 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 00:41:20,392 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 00:41:20,405 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 00:41:20,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:41:20 WrapperNode [2018-01-30 00:41:20,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-30 00:41:20,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-30 00:41:20,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-30 00:41:20,409 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-30 00:41:20,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:41:20" (1/1) ... [2018-01-30 00:41:20,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:41:20" (1/1) ... [2018-01-30 00:41:20,423 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:41:20" (1/1) ... [2018-01-30 00:41:20,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:41:20" (1/1) ... [2018-01-30 00:41:20,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:41:20" (1/1) ... [2018-01-30 00:41:20,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:41:20" (1/1) ... [2018-01-30 00:41:20,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:41:20" (1/1) ... [2018-01-30 00:41:20,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-30 00:41:20,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-30 00:41:20,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-30 00:41:20,429 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-30 00:41:20,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:41:20" (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 00:41:20,464 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-30 00:41:20,464 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-30 00:41:20,464 INFO L136 BoogieDeclarations]: Found implementation of procedure avg [2018-01-30 00:41:20,464 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-30 00:41:20,464 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-30 00:41:20,465 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-30 00:41:20,465 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-30 00:41:20,465 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-30 00:41:20,465 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-30 00:41:20,465 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-30 00:41:20,465 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-30 00:41:20,465 INFO L128 BoogieDeclarations]: Found specification of procedure avg [2018-01-30 00:41:20,465 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-30 00:41:20,465 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-30 00:41:20,465 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-30 00:41:20,806 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-30 00:41:20,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 12:41:20 BoogieIcfgContainer [2018-01-30 00:41:20,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-30 00:41:20,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-30 00:41:20,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-30 00:41:20,809 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-30 00:41:20,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 12:41:20" (1/3) ... [2018-01-30 00:41:20,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42db4fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 12:41:20, skipping insertion in model container [2018-01-30 00:41:20,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:41:20" (2/3) ... [2018-01-30 00:41:20,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42db4fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 12:41:20, skipping insertion in model container [2018-01-30 00:41:20,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 12:41:20" (3/3) ... [2018-01-30 00:41:20,811 INFO L107 eAbstractionObserver]: Analyzing ICFG avg60_true-unreach-call.i [2018-01-30 00:41:20,816 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-30 00:41:20,820 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-30 00:41:20,846 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-30 00:41:20,847 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-30 00:41:20,847 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-30 00:41:20,847 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-30 00:41:20,847 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-30 00:41:20,847 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-30 00:41:20,847 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-30 00:41:20,847 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-30 00:41:20,847 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-30 00:41:20,857 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2018-01-30 00:41:20,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-01-30 00:41:20,861 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:41:20,862 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 00:41:20,862 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolation]=== [2018-01-30 00:41:20,865 INFO L82 PathProgramCache]: Analyzing trace with hash 951170667, now seen corresponding path program 1 times [2018-01-30 00:41:20,866 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:41:20,866 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:41:20,894 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:20,894 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:41:20,894 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:20,923 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:41:20,974 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 00:41:20,975 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 00:41:20,976 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-30 00:41:20,978 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-30 00:41:20,986 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-30 00:41:20,986 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-30 00:41:20,987 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 2 states. [2018-01-30 00:41:21,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:41:21,004 INFO L93 Difference]: Finished difference Result 136 states and 153 transitions. [2018-01-30 00:41:21,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-30 00:41:21,005 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 67 [2018-01-30 00:41:21,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:41:21,010 INFO L225 Difference]: With dead ends: 136 [2018-01-30 00:41:21,010 INFO L226 Difference]: Without dead ends: 71 [2018-01-30 00:41:21,012 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 00:41:21,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-01-30 00:41:21,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-01-30 00:41:21,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-01-30 00:41:21,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2018-01-30 00:41:21,036 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 67 [2018-01-30 00:41:21,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:41:21,036 INFO L432 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2018-01-30 00:41:21,036 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-30 00:41:21,036 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2018-01-30 00:41:21,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-01-30 00:41:21,038 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:41:21,038 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 00:41:21,038 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolation]=== [2018-01-30 00:41:21,038 INFO L82 PathProgramCache]: Analyzing trace with hash 352061447, now seen corresponding path program 1 times [2018-01-30 00:41:21,039 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:41:21,039 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:41:21,039 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:21,040 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:41:21,040 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:21,107 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:41:21,189 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 00:41:21,190 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 00:41:21,190 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-30 00:41:21,191 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-30 00:41:21,191 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-30 00:41:21,191 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-30 00:41:21,191 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 3 states. [2018-01-30 00:41:21,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:41:21,260 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2018-01-30 00:41:21,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-30 00:41:21,262 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2018-01-30 00:41:21,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:41:21,263 INFO L225 Difference]: With dead ends: 129 [2018-01-30 00:41:21,263 INFO L226 Difference]: Without dead ends: 78 [2018-01-30 00:41:21,264 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 00:41:21,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-01-30 00:41:21,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2018-01-30 00:41:21,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-01-30 00:41:21,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2018-01-30 00:41:21,269 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 72 [2018-01-30 00:41:21,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:41:21,269 INFO L432 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2018-01-30 00:41:21,269 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-30 00:41:21,269 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2018-01-30 00:41:21,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-01-30 00:41:21,270 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:41:21,271 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 00:41:21,271 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolation]=== [2018-01-30 00:41:21,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1617545872, now seen corresponding path program 1 times [2018-01-30 00:41:21,271 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:41:21,271 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:41:21,272 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:21,272 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:41:21,272 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:21,281 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:41:21,341 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 00:41:21,341 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:41:21,341 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 00:41:21,360 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:41:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:21,401 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:41:21,505 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 00:41:21,523 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:41:21,523 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-30 00:41:21,524 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-30 00:41:21,524 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-30 00:41:21,524 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-30 00:41:21,524 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 6 states. [2018-01-30 00:41:21,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:41:21,763 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2018-01-30 00:41:21,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-30 00:41:21,764 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2018-01-30 00:41:21,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:41:21,765 INFO L225 Difference]: With dead ends: 144 [2018-01-30 00:41:21,765 INFO L226 Difference]: Without dead ends: 93 [2018-01-30 00:41:21,765 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-30 00:41:21,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-01-30 00:41:21,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2018-01-30 00:41:21,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-01-30 00:41:21,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2018-01-30 00:41:21,769 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 80 [2018-01-30 00:41:21,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:41:21,770 INFO L432 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2018-01-30 00:41:21,770 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-30 00:41:21,770 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2018-01-30 00:41:21,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-01-30 00:41:21,771 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:41:21,772 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 00:41:21,772 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolation]=== [2018-01-30 00:41:21,772 INFO L82 PathProgramCache]: Analyzing trace with hash -904252446, now seen corresponding path program 1 times [2018-01-30 00:41:21,772 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:41:21,772 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:41:21,773 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:21,773 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:41:21,773 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:21,784 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:41:21,886 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 00:41:21,887 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:41:21,887 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 00:41:21,906 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:41:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:21,941 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:41:21,955 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 00:41:21,972 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:41:21,972 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-30 00:41:21,973 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-30 00:41:21,973 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-30 00:41:21,973 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-30 00:41:21,973 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 6 states. [2018-01-30 00:41:22,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:41:22,171 INFO L93 Difference]: Finished difference Result 155 states and 166 transitions. [2018-01-30 00:41:22,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-30 00:41:22,171 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-01-30 00:41:22,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:41:22,171 INFO L225 Difference]: With dead ends: 155 [2018-01-30 00:41:22,172 INFO L226 Difference]: Without dead ends: 103 [2018-01-30 00:41:22,172 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 00:41:22,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-01-30 00:41:22,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 93. [2018-01-30 00:41:22,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-01-30 00:41:22,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2018-01-30 00:41:22,176 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 112 [2018-01-30 00:41:22,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:41:22,176 INFO L432 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2018-01-30 00:41:22,176 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-30 00:41:22,176 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2018-01-30 00:41:22,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-01-30 00:41:22,178 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:41:22,178 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 00:41:22,178 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolation]=== [2018-01-30 00:41:22,178 INFO L82 PathProgramCache]: Analyzing trace with hash -705814942, now seen corresponding path program 1 times [2018-01-30 00:41:22,178 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:41:22,178 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:41:22,179 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:22,179 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:41:22,179 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:22,193 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:41:22,304 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 00:41:22,304 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:41:22,304 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:41:22,315 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:41:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:22,347 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:41:22,565 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 00:41:22,581 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:41:22,581 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2018-01-30 00:41:22,582 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-30 00:41:22,582 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-30 00:41:22,582 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-30 00:41:22,582 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 10 states. [2018-01-30 00:41:22,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:41:22,691 INFO L93 Difference]: Finished difference Result 182 states and 191 transitions. [2018-01-30 00:41:22,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-30 00:41:22,691 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 144 [2018-01-30 00:41:22,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:41:22,692 INFO L225 Difference]: With dead ends: 182 [2018-01-30 00:41:22,692 INFO L226 Difference]: Without dead ends: 119 [2018-01-30 00:41:22,693 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 00:41:22,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-01-30 00:41:22,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 109. [2018-01-30 00:41:22,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-01-30 00:41:22,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2018-01-30 00:41:22,696 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 144 [2018-01-30 00:41:22,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:41:22,696 INFO L432 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2018-01-30 00:41:22,697 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-30 00:41:22,697 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2018-01-30 00:41:22,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-01-30 00:41:22,700 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:41:22,700 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 00:41:22,700 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolation]=== [2018-01-30 00:41:22,700 INFO L82 PathProgramCache]: Analyzing trace with hash 448042562, now seen corresponding path program 2 times [2018-01-30 00:41:22,700 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:41:22,700 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:41:22,701 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:22,701 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:41:22,701 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:22,719 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:41:22,850 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 00:41:22,850 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:41:22,850 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 00:41:22,856 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 00:41:22,869 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:22,894 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:22,906 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:41:22,909 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:41:23,244 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 00:41:23,260 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:41:23,261 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2018-01-30 00:41:23,261 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-30 00:41:23,261 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-30 00:41:23,261 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-01-30 00:41:23,261 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 14 states. [2018-01-30 00:41:23,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:41:23,565 INFO L93 Difference]: Finished difference Result 206 states and 218 transitions. [2018-01-30 00:41:23,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-30 00:41:23,566 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 160 [2018-01-30 00:41:23,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:41:23,566 INFO L225 Difference]: With dead ends: 206 [2018-01-30 00:41:23,566 INFO L226 Difference]: Without dead ends: 135 [2018-01-30 00:41:23,567 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 00:41:23,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-01-30 00:41:23,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 125. [2018-01-30 00:41:23,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-01-30 00:41:23,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2018-01-30 00:41:23,571 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 160 [2018-01-30 00:41:23,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:41:23,571 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2018-01-30 00:41:23,571 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-30 00:41:23,571 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2018-01-30 00:41:23,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-01-30 00:41:23,573 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:41:23,573 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 00:41:23,573 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolation]=== [2018-01-30 00:41:23,573 INFO L82 PathProgramCache]: Analyzing trace with hash 651681972, now seen corresponding path program 3 times [2018-01-30 00:41:23,573 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:41:23,573 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:41:23,574 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:23,574 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:41:23,574 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:23,589 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:41:23,956 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 00:41:23,957 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:41:23,957 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 00:41:23,961 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 00:41:23,972 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:41:23,979 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:41:23,988 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:41:23,996 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:41:23,997 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:41:24,000 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:41:24,034 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 00:41:24,050 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:41:24,051 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-01-30 00:41:24,051 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-30 00:41:24,051 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-30 00:41:24,051 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-30 00:41:24,051 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand 9 states. [2018-01-30 00:41:24,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:41:24,128 INFO L93 Difference]: Finished difference Result 180 states and 185 transitions. [2018-01-30 00:41:24,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-30 00:41:24,128 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 192 [2018-01-30 00:41:24,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:41:24,129 INFO L225 Difference]: With dead ends: 180 [2018-01-30 00:41:24,129 INFO L226 Difference]: Without dead ends: 138 [2018-01-30 00:41:24,129 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-01-30 00:41:24,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-01-30 00:41:24,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 133. [2018-01-30 00:41:24,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-01-30 00:41:24,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 137 transitions. [2018-01-30 00:41:24,134 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 137 transitions. Word has length 192 [2018-01-30 00:41:24,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:41:24,136 INFO L432 AbstractCegarLoop]: Abstraction has 133 states and 137 transitions. [2018-01-30 00:41:24,136 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-30 00:41:24,136 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 137 transitions. [2018-01-30 00:41:24,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-01-30 00:41:24,137 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:41:24,137 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 00:41:24,137 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolation]=== [2018-01-30 00:41:24,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1257913045, now seen corresponding path program 4 times [2018-01-30 00:41:24,137 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:41:24,137 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:41:24,138 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:24,138 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:41:24,138 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:24,151 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:41:24,353 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 00:41:24,353 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:41:24,353 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:41:24,359 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 00:41:24,396 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:41:24,399 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:41:24,444 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 00:41:24,462 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:41:24,462 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2018-01-30 00:41:24,462 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-30 00:41:24,463 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-30 00:41:24,463 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-30 00:41:24,463 INFO L87 Difference]: Start difference. First operand 133 states and 137 transitions. Second operand 13 states. [2018-01-30 00:41:24,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:41:24,531 INFO L93 Difference]: Finished difference Result 233 states and 241 transitions. [2018-01-30 00:41:24,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-30 00:41:24,532 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 200 [2018-01-30 00:41:24,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:41:24,533 INFO L225 Difference]: With dead ends: 233 [2018-01-30 00:41:24,533 INFO L226 Difference]: Without dead ends: 146 [2018-01-30 00:41:24,533 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2018-01-30 00:41:24,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-30 00:41:24,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 141. [2018-01-30 00:41:24,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-01-30 00:41:24,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 145 transitions. [2018-01-30 00:41:24,537 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 145 transitions. Word has length 200 [2018-01-30 00:41:24,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:41:24,538 INFO L432 AbstractCegarLoop]: Abstraction has 141 states and 145 transitions. [2018-01-30 00:41:24,538 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-30 00:41:24,538 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 145 transitions. [2018-01-30 00:41:24,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-01-30 00:41:24,547 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:41:24,547 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 00:41:24,547 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolation]=== [2018-01-30 00:41:24,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1725930860, now seen corresponding path program 5 times [2018-01-30 00:41:24,547 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:41:24,547 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:41:24,548 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:24,548 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:41:24,548 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:24,568 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:41:24,900 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 00:41:24,900 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:41:24,900 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 00:41:24,910 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 00:41:24,921 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:24,925 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:24,929 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:24,935 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:24,939 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:41:24,941 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:41:25,015 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 00:41:25,033 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:41:25,033 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2018-01-30 00:41:25,034 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-30 00:41:25,034 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-30 00:41:25,034 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2018-01-30 00:41:25,034 INFO L87 Difference]: Start difference. First operand 141 states and 145 transitions. Second operand 20 states. [2018-01-30 00:41:25,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:41:25,324 INFO L93 Difference]: Finished difference Result 254 states and 266 transitions. [2018-01-30 00:41:25,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-30 00:41:25,325 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 208 [2018-01-30 00:41:25,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:41:25,326 INFO L225 Difference]: With dead ends: 254 [2018-01-30 00:41:25,326 INFO L226 Difference]: Without dead ends: 167 [2018-01-30 00:41:25,326 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2018-01-30 00:41:25,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-01-30 00:41:25,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 157. [2018-01-30 00:41:25,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-01-30 00:41:25,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 161 transitions. [2018-01-30 00:41:25,330 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 161 transitions. Word has length 208 [2018-01-30 00:41:25,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:41:25,330 INFO L432 AbstractCegarLoop]: Abstraction has 157 states and 161 transitions. [2018-01-30 00:41:25,330 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-01-30 00:41:25,330 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 161 transitions. [2018-01-30 00:41:25,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-01-30 00:41:25,331 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:41:25,331 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 00:41:25,331 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolation]=== [2018-01-30 00:41:25,332 INFO L82 PathProgramCache]: Analyzing trace with hash 486960902, now seen corresponding path program 6 times [2018-01-30 00:41:25,332 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:41:25,332 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:41:25,332 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:25,332 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:41:25,332 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:25,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:25,345 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:41:26,111 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 00:41:26,112 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:41:26,112 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 00:41:26,118 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 00:41:26,129 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:26,132 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:26,135 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:26,139 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:26,145 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:26,161 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:26,169 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:26,170 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:41:26,173 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:41:26,263 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 00:41:26,281 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:41:26,281 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2018-01-30 00:41:26,282 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-30 00:41:26,282 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-30 00:41:26,282 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2018-01-30 00:41:26,282 INFO L87 Difference]: Start difference. First operand 157 states and 161 transitions. Second operand 24 states. [2018-01-30 00:41:26,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:41:26,555 INFO L93 Difference]: Finished difference Result 278 states and 290 transitions. [2018-01-30 00:41:26,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-30 00:41:26,564 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 240 [2018-01-30 00:41:26,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:41:26,565 INFO L225 Difference]: With dead ends: 278 [2018-01-30 00:41:26,565 INFO L226 Difference]: Without dead ends: 183 [2018-01-30 00:41:26,565 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=365, Invalid=1527, Unknown=0, NotChecked=0, Total=1892 [2018-01-30 00:41:26,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-01-30 00:41:26,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 173. [2018-01-30 00:41:26,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-01-30 00:41:26,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 177 transitions. [2018-01-30 00:41:26,569 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 177 transitions. Word has length 240 [2018-01-30 00:41:26,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:41:26,569 INFO L432 AbstractCegarLoop]: Abstraction has 173 states and 177 transitions. [2018-01-30 00:41:26,569 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-30 00:41:26,569 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 177 transitions. [2018-01-30 00:41:26,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-01-30 00:41:26,570 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:41:26,570 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 00:41:26,570 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolation]=== [2018-01-30 00:41:26,570 INFO L82 PathProgramCache]: Analyzing trace with hash 2007982456, now seen corresponding path program 7 times [2018-01-30 00:41:26,570 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:41:26,570 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:41:26,571 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:26,571 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:41:26,571 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:26,582 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:41:26,763 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 00:41:26,763 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:41:26,763 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 00:41:26,775 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:41:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:26,815 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:41:26,869 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 00:41:26,889 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:41:26,889 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2018-01-30 00:41:26,890 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-30 00:41:26,890 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-30 00:41:26,890 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-30 00:41:26,890 INFO L87 Difference]: Start difference. First operand 173 states and 177 transitions. Second operand 19 states. [2018-01-30 00:41:27,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:41:27,215 INFO L93 Difference]: Finished difference Result 289 states and 297 transitions. [2018-01-30 00:41:27,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-30 00:41:27,222 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 272 [2018-01-30 00:41:27,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:41:27,223 INFO L225 Difference]: With dead ends: 289 [2018-01-30 00:41:27,223 INFO L226 Difference]: Without dead ends: 186 [2018-01-30 00:41:27,224 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2018-01-30 00:41:27,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-01-30 00:41:27,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 181. [2018-01-30 00:41:27,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-01-30 00:41:27,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 185 transitions. [2018-01-30 00:41:27,226 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 185 transitions. Word has length 272 [2018-01-30 00:41:27,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:41:27,227 INFO L432 AbstractCegarLoop]: Abstraction has 181 states and 185 transitions. [2018-01-30 00:41:27,227 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-30 00:41:27,227 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 185 transitions. [2018-01-30 00:41:27,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-01-30 00:41:27,227 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:41:27,228 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 00:41:27,228 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolation]=== [2018-01-30 00:41:27,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1034502687, now seen corresponding path program 8 times [2018-01-30 00:41:27,228 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:41:27,228 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:41:27,228 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:27,228 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:41:27,229 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:27,239 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:41:27,530 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 00:41:27,530 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:41:27,530 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:41:27,535 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 00:41:27,545 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:27,566 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:27,570 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:41:27,572 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:41:27,676 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 00:41:27,693 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:41:27,693 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-30 00:41:27,693 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-30 00:41:27,694 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-30 00:41:27,694 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-30 00:41:27,694 INFO L87 Difference]: Start difference. First operand 181 states and 185 transitions. Second operand 21 states. [2018-01-30 00:41:27,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:41:27,877 INFO L93 Difference]: Finished difference Result 297 states and 305 transitions. [2018-01-30 00:41:27,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-30 00:41:27,889 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 280 [2018-01-30 00:41:27,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:41:27,890 INFO L225 Difference]: With dead ends: 297 [2018-01-30 00:41:27,890 INFO L226 Difference]: Without dead ends: 194 [2018-01-30 00:41:27,890 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2018-01-30 00:41:27,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-01-30 00:41:27,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 189. [2018-01-30 00:41:27,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-30 00:41:27,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 193 transitions. [2018-01-30 00:41:27,893 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 193 transitions. Word has length 280 [2018-01-30 00:41:27,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:41:27,893 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 193 transitions. [2018-01-30 00:41:27,893 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-30 00:41:27,893 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 193 transitions. [2018-01-30 00:41:27,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-01-30 00:41:27,894 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:41:27,894 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 00:41:27,894 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolation]=== [2018-01-30 00:41:27,895 INFO L82 PathProgramCache]: Analyzing trace with hash -571236022, now seen corresponding path program 9 times [2018-01-30 00:41:27,895 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:41:27,895 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:41:27,895 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:27,895 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:41:27,895 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:27,911 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:41:28,157 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 00:41:28,158 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:41:28,158 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 00:41:28,162 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 00:41:28,173 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:41:28,177 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:41:28,187 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:41:28,205 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:41:28,220 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:41:28,221 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:41:28,224 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:41:28,348 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 00:41:28,372 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:41:28,373 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9] total 28 [2018-01-30 00:41:28,373 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-30 00:41:28,373 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-30 00:41:28,373 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2018-01-30 00:41:28,373 INFO L87 Difference]: Start difference. First operand 189 states and 193 transitions. Second operand 28 states. [2018-01-30 00:41:28,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:41:28,890 INFO L93 Difference]: Finished difference Result 318 states and 327 transitions. [2018-01-30 00:41:28,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-30 00:41:28,890 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 288 [2018-01-30 00:41:28,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:41:28,891 INFO L225 Difference]: With dead ends: 318 [2018-01-30 00:41:28,891 INFO L226 Difference]: Without dead ends: 215 [2018-01-30 00:41:28,892 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=575, Invalid=2077, Unknown=0, NotChecked=0, Total=2652 [2018-01-30 00:41:28,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-01-30 00:41:28,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 205. [2018-01-30 00:41:28,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-01-30 00:41:28,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 209 transitions. [2018-01-30 00:41:28,895 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 209 transitions. Word has length 288 [2018-01-30 00:41:28,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:41:28,895 INFO L432 AbstractCegarLoop]: Abstraction has 205 states and 209 transitions. [2018-01-30 00:41:28,895 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-30 00:41:28,895 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 209 transitions. [2018-01-30 00:41:28,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-01-30 00:41:28,899 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:41:28,899 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 00:41:28,899 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolation]=== [2018-01-30 00:41:28,899 INFO L82 PathProgramCache]: Analyzing trace with hash 2113676586, now seen corresponding path program 10 times [2018-01-30 00:41:28,904 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:41:28,904 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:41:28,905 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:28,905 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:41:28,905 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:28,926 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:41:29,359 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 00:41:29,359 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:41:29,360 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 00:41:29,364 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 00:41:29,414 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:41:29,418 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:41:29,457 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 00:41:29,475 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:41:29,475 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2018-01-30 00:41:29,476 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-30 00:41:29,476 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-30 00:41:29,476 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-01-30 00:41:29,476 INFO L87 Difference]: Start difference. First operand 205 states and 209 transitions. Second operand 25 states. [2018-01-30 00:41:29,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:41:29,738 INFO L93 Difference]: Finished difference Result 329 states and 337 transitions. [2018-01-30 00:41:29,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-30 00:41:29,746 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 304 [2018-01-30 00:41:29,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:41:29,746 INFO L225 Difference]: With dead ends: 329 [2018-01-30 00:41:29,747 INFO L226 Difference]: Without dead ends: 218 [2018-01-30 00:41:29,747 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2018-01-30 00:41:29,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-01-30 00:41:29,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 213. [2018-01-30 00:41:29,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-01-30 00:41:29,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 217 transitions. [2018-01-30 00:41:29,750 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 217 transitions. Word has length 304 [2018-01-30 00:41:29,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:41:29,750 INFO L432 AbstractCegarLoop]: Abstraction has 213 states and 217 transitions. [2018-01-30 00:41:29,750 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-30 00:41:29,750 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 217 transitions. [2018-01-30 00:41:29,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-01-30 00:41:29,751 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:41:29,751 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 00:41:29,751 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolation]=== [2018-01-30 00:41:29,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1850761837, now seen corresponding path program 11 times [2018-01-30 00:41:29,752 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:41:29,752 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:41:29,752 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:29,752 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:41:29,752 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:29,764 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:41:30,136 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 00:41:30,136 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:41:30,136 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 00:41:30,141 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 00:41:30,150 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:30,153 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:30,154 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:30,156 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:30,158 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:30,161 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:30,166 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:30,172 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:30,181 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:30,225 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:30,226 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:41:30,229 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:41:30,354 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 00:41:30,371 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:41:30,371 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13] total 36 [2018-01-30 00:41:30,372 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-30 00:41:30,372 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-30 00:41:30,372 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1045, Unknown=0, NotChecked=0, Total=1260 [2018-01-30 00:41:30,372 INFO L87 Difference]: Start difference. First operand 213 states and 217 transitions. Second operand 36 states. [2018-01-30 00:41:31,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:41:31,442 INFO L93 Difference]: Finished difference Result 350 states and 362 transitions. [2018-01-30 00:41:31,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-01-30 00:41:31,446 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 312 [2018-01-30 00:41:31,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:41:31,446 INFO L225 Difference]: With dead ends: 350 [2018-01-30 00:41:31,446 INFO L226 Difference]: Without dead ends: 239 [2018-01-30 00:41:31,447 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 00:41:31,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-01-30 00:41:31,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 229. [2018-01-30 00:41:31,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-01-30 00:41:31,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2018-01-30 00:41:31,454 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 312 [2018-01-30 00:41:31,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:41:31,454 INFO L432 AbstractCegarLoop]: Abstraction has 229 states and 233 transitions. [2018-01-30 00:41:31,454 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-30 00:41:31,454 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 233 transitions. [2018-01-30 00:41:31,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-01-30 00:41:31,455 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:41:31,455 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 00:41:31,455 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolation]=== [2018-01-30 00:41:31,455 INFO L82 PathProgramCache]: Analyzing trace with hash 805021189, now seen corresponding path program 12 times [2018-01-30 00:41:31,455 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:41:31,455 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:41:31,456 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:31,456 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:41:31,456 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:31,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:31,469 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:41:32,316 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 00:41:32,316 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:41:32,316 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 00:41:32,328 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 00:41:32,342 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:32,353 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:32,365 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:32,376 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:32,382 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:32,414 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:32,429 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:32,463 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:32,536 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:32,607 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:32,703 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:32,705 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:41:32,708 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:41:32,856 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 00:41:32,873 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:41:32,874 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 11] total 36 [2018-01-30 00:41:32,874 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-30 00:41:32,874 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-30 00:41:32,874 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1031, Unknown=0, NotChecked=0, Total=1260 [2018-01-30 00:41:32,875 INFO L87 Difference]: Start difference. First operand 229 states and 233 transitions. Second operand 36 states. [2018-01-30 00:41:33,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:41:33,318 INFO L93 Difference]: Finished difference Result 374 states and 383 transitions. [2018-01-30 00:41:33,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-01-30 00:41:33,318 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 344 [2018-01-30 00:41:33,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:41:33,319 INFO L225 Difference]: With dead ends: 374 [2018-01-30 00:41:33,319 INFO L226 Difference]: Without dead ends: 255 [2018-01-30 00:41:33,320 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=965, Invalid=3591, Unknown=0, NotChecked=0, Total=4556 [2018-01-30 00:41:33,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-01-30 00:41:33,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 245. [2018-01-30 00:41:33,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-01-30 00:41:33,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 249 transitions. [2018-01-30 00:41:33,323 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 249 transitions. Word has length 344 [2018-01-30 00:41:33,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:41:33,324 INFO L432 AbstractCegarLoop]: Abstraction has 245 states and 249 transitions. [2018-01-30 00:41:33,324 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-30 00:41:33,324 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 249 transitions. [2018-01-30 00:41:33,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-01-30 00:41:33,325 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:41:33,325 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 00:41:33,325 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolation]=== [2018-01-30 00:41:33,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1064452581, now seen corresponding path program 13 times [2018-01-30 00:41:33,325 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:41:33,325 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:41:33,326 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:33,326 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:41:33,326 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:33,338 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:41:34,150 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 00:41:34,151 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:41:34,151 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 00:41:34,156 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:41:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:34,196 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:41:34,670 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 00:41:34,688 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:41:34,688 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2018-01-30 00:41:34,688 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-30 00:41:34,688 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-30 00:41:34,689 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-30 00:41:34,689 INFO L87 Difference]: Start difference. First operand 245 states and 249 transitions. Second operand 31 states. [2018-01-30 00:41:35,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:41:35,172 INFO L93 Difference]: Finished difference Result 385 states and 393 transitions. [2018-01-30 00:41:35,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-30 00:41:35,172 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 360 [2018-01-30 00:41:35,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:41:35,173 INFO L225 Difference]: With dead ends: 385 [2018-01-30 00:41:35,173 INFO L226 Difference]: Without dead ends: 258 [2018-01-30 00:41:35,174 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2018-01-30 00:41:35,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-01-30 00:41:35,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 253. [2018-01-30 00:41:35,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-01-30 00:41:35,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 257 transitions. [2018-01-30 00:41:35,177 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 257 transitions. Word has length 360 [2018-01-30 00:41:35,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:41:35,177 INFO L432 AbstractCegarLoop]: Abstraction has 253 states and 257 transitions. [2018-01-30 00:41:35,177 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-30 00:41:35,177 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 257 transitions. [2018-01-30 00:41:35,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-01-30 00:41:35,178 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:41:35,178 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 00:41:35,178 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolation]=== [2018-01-30 00:41:35,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1813343054, now seen corresponding path program 14 times [2018-01-30 00:41:35,179 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:41:35,179 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:41:35,179 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:35,179 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:41:35,179 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:35,192 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:41:35,822 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 00:41:35,823 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:41:35,823 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 00:41:35,827 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 00:41:35,843 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:35,877 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:35,889 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:41:35,892 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:41:36,022 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 00:41:36,039 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:41:36,039 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2018-01-30 00:41:36,040 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-30 00:41:36,040 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-30 00:41:36,040 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-01-30 00:41:36,040 INFO L87 Difference]: Start difference. First operand 253 states and 257 transitions. Second operand 33 states. [2018-01-30 00:41:36,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:41:36,337 INFO L93 Difference]: Finished difference Result 393 states and 401 transitions. [2018-01-30 00:41:36,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-30 00:41:36,352 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 368 [2018-01-30 00:41:36,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:41:36,353 INFO L225 Difference]: With dead ends: 393 [2018-01-30 00:41:36,353 INFO L226 Difference]: Without dead ends: 266 [2018-01-30 00:41:36,354 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 00:41:36,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-01-30 00:41:36,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 261. [2018-01-30 00:41:36,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-01-30 00:41:36,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 265 transitions. [2018-01-30 00:41:36,358 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 265 transitions. Word has length 368 [2018-01-30 00:41:36,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:41:36,359 INFO L432 AbstractCegarLoop]: Abstraction has 261 states and 265 transitions. [2018-01-30 00:41:36,359 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-30 00:41:36,359 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 265 transitions. [2018-01-30 00:41:36,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-01-30 00:41:36,360 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:41:36,360 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 00:41:36,360 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolation]=== [2018-01-30 00:41:36,360 INFO L82 PathProgramCache]: Analyzing trace with hash 194059191, now seen corresponding path program 15 times [2018-01-30 00:41:36,360 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:41:36,360 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:41:36,361 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:36,361 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:41:36,361 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:36,378 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:41:37,016 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 00:41:37,016 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:41:37,016 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 00:41:37,023 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 00:41:37,036 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:41:37,048 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:41:37,066 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:41:37,078 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:41:37,097 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:41:37,122 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:41:37,135 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:41:37,136 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:41:37,139 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:41:37,329 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 00:41:37,348 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:41:37,348 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 15] total 46 [2018-01-30 00:41:37,349 INFO L409 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-01-30 00:41:37,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-01-30 00:41:37,349 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1720, Unknown=0, NotChecked=0, Total=2070 [2018-01-30 00:41:37,349 INFO L87 Difference]: Start difference. First operand 261 states and 265 transitions. Second operand 46 states. [2018-01-30 00:41:37,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:41:37,966 INFO L93 Difference]: Finished difference Result 414 states and 426 transitions. [2018-01-30 00:41:37,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-01-30 00:41:37,966 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 376 [2018-01-30 00:41:37,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:41:37,967 INFO L225 Difference]: With dead ends: 414 [2018-01-30 00:41:37,967 INFO L226 Difference]: Without dead ends: 287 [2018-01-30 00:41:37,968 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1478 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1520, Invalid=6136, Unknown=0, NotChecked=0, Total=7656 [2018-01-30 00:41:37,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-01-30 00:41:37,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 277. [2018-01-30 00:41:37,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-01-30 00:41:37,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 281 transitions. [2018-01-30 00:41:37,974 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 281 transitions. Word has length 376 [2018-01-30 00:41:37,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:41:37,974 INFO L432 AbstractCegarLoop]: Abstraction has 277 states and 281 transitions. [2018-01-30 00:41:37,974 INFO L433 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-01-30 00:41:37,974 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 281 transitions. [2018-01-30 00:41:37,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-01-30 00:41:37,975 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:41:37,975 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 00:41:37,975 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolation]=== [2018-01-30 00:41:37,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1980621271, now seen corresponding path program 16 times [2018-01-30 00:41:37,976 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:41:37,976 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:41:37,976 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:37,976 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:41:37,976 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:37,990 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:41:38,559 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 00:41:38,559 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:41:38,559 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:41:38,564 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 00:41:38,688 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:41:38,691 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:41:38,838 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 00:41:38,856 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:41:38,856 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2018-01-30 00:41:38,856 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-30 00:41:38,856 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-30 00:41:38,857 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2018-01-30 00:41:38,857 INFO L87 Difference]: Start difference. First operand 277 states and 281 transitions. Second operand 37 states. [2018-01-30 00:41:39,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:41:39,333 INFO L93 Difference]: Finished difference Result 425 states and 433 transitions. [2018-01-30 00:41:39,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-01-30 00:41:39,334 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 408 [2018-01-30 00:41:39,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:41:39,335 INFO L225 Difference]: With dead ends: 425 [2018-01-30 00:41:39,335 INFO L226 Difference]: Without dead ends: 290 [2018-01-30 00:41:39,336 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2018-01-30 00:41:39,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-01-30 00:41:39,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 285. [2018-01-30 00:41:39,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-01-30 00:41:39,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 289 transitions. [2018-01-30 00:41:39,339 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 289 transitions. Word has length 408 [2018-01-30 00:41:39,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:41:39,339 INFO L432 AbstractCegarLoop]: Abstraction has 285 states and 289 transitions. [2018-01-30 00:41:39,339 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-30 00:41:39,339 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 289 transitions. [2018-01-30 00:41:39,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-01-30 00:41:39,340 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:41:39,340 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 00:41:39,340 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolation]=== [2018-01-30 00:41:39,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1649446510, now seen corresponding path program 17 times [2018-01-30 00:41:39,341 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:41:39,341 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:41:39,341 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:39,341 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:41:39,341 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:39,354 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:41:39,924 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 00:41:39,924 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:41:39,925 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 00:41:39,929 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 00:41:39,942 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:39,943 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:39,944 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:39,945 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:39,947 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:39,949 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:39,951 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:39,954 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:39,960 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:39,966 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:39,973 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:39,984 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:40,003 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:40,090 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:40,152 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:40,492 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:40,493 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:41:40,497 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:41:41,037 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 00:41:41,055 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:41:41,055 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 17] total 52 [2018-01-30 00:41:41,056 INFO L409 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-01-30 00:41:41,056 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-01-30 00:41:41,056 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=2213, Unknown=0, NotChecked=0, Total=2652 [2018-01-30 00:41:41,057 INFO L87 Difference]: Start difference. First operand 285 states and 289 transitions. Second operand 52 states. [2018-01-30 00:41:41,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:41:41,913 INFO L93 Difference]: Finished difference Result 446 states and 458 transitions. [2018-01-30 00:41:41,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-01-30 00:41:41,916 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 416 [2018-01-30 00:41:41,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:41:41,917 INFO L225 Difference]: With dead ends: 446 [2018-01-30 00:41:41,917 INFO L226 Difference]: Without dead ends: 311 [2018-01-30 00:41:41,919 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1937 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1935, Invalid=7965, Unknown=0, NotChecked=0, Total=9900 [2018-01-30 00:41:41,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-01-30 00:41:41,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 301. [2018-01-30 00:41:41,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-01-30 00:41:41,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 305 transitions. [2018-01-30 00:41:41,923 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 305 transitions. Word has length 416 [2018-01-30 00:41:41,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:41:41,923 INFO L432 AbstractCegarLoop]: Abstraction has 301 states and 305 transitions. [2018-01-30 00:41:41,923 INFO L433 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-01-30 00:41:41,923 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 305 transitions. [2018-01-30 00:41:41,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-01-30 00:41:41,925 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:41:41,925 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 00:41:41,925 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolation]=== [2018-01-30 00:41:41,925 INFO L82 PathProgramCache]: Analyzing trace with hash 279541252, now seen corresponding path program 18 times [2018-01-30 00:41:41,925 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:41:41,925 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:41:41,926 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:41,926 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:41:41,926 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:41,940 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:41:42,797 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 00:41:42,798 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:41:42,798 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 00:41:42,803 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 00:41:42,822 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:42,824 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:42,827 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:42,830 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:42,836 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:42,848 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:42,857 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:42,915 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:42,972 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:43,145 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:43,307 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:43,457 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:43,512 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:41:43,514 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:41:43,519 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:41:43,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3732 backedges. 1246 proven. 90 refuted. 0 times theorem prover too weak. 2396 trivial. 0 not checked. [2018-01-30 00:41:43,886 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:41:43,887 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 16] total 53 [2018-01-30 00:41:43,887 INFO L409 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-01-30 00:41:43,887 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-01-30 00:41:43,887 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=509, Invalid=2247, Unknown=0, NotChecked=0, Total=2756 [2018-01-30 00:41:43,888 INFO L87 Difference]: Start difference. First operand 301 states and 305 transitions. Second operand 53 states. [2018-01-30 00:41:45,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:41:45,234 INFO L93 Difference]: Finished difference Result 470 states and 479 transitions. [2018-01-30 00:41:45,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-01-30 00:41:45,235 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 448 [2018-01-30 00:41:45,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:41:45,236 INFO L225 Difference]: With dead ends: 470 [2018-01-30 00:41:45,236 INFO L226 Difference]: Without dead ends: 327 [2018-01-30 00:41:45,238 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2292 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2376, Invalid=9180, Unknown=0, NotChecked=0, Total=11556 [2018-01-30 00:41:45,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-01-30 00:41:45,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 317. [2018-01-30 00:41:45,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-01-30 00:41:45,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 321 transitions. [2018-01-30 00:41:45,244 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 321 transitions. Word has length 448 [2018-01-30 00:41:45,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:41:45,245 INFO L432 AbstractCegarLoop]: Abstraction has 317 states and 321 transitions. [2018-01-30 00:41:45,245 INFO L433 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-01-30 00:41:45,245 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 321 transitions. [2018-01-30 00:41:45,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2018-01-30 00:41:45,246 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:41:45,246 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 00:41:45,247 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr0AssertViolation]=== [2018-01-30 00:41:45,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1853480476, now seen corresponding path program 19 times [2018-01-30 00:41:45,247 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:41:45,247 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:41:45,247 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:45,247 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:41:45,247 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:45,262 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:41:46,084 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 00:41:46,084 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:41:46,085 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 00:41:46,089 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:41:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:46,143 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:41:46,531 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 00:41:46,550 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:41:46,550 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2018-01-30 00:41:46,550 INFO L409 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-01-30 00:41:46,550 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-01-30 00:41:46,550 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2018-01-30 00:41:46,551 INFO L87 Difference]: Start difference. First operand 317 states and 321 transitions. Second operand 43 states. [2018-01-30 00:41:47,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:41:47,366 INFO L93 Difference]: Finished difference Result 481 states and 489 transitions. [2018-01-30 00:41:47,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-01-30 00:41:47,370 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 464 [2018-01-30 00:41:47,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:41:47,371 INFO L225 Difference]: With dead ends: 481 [2018-01-30 00:41:47,371 INFO L226 Difference]: Without dead ends: 330 [2018-01-30 00:41:47,372 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2018-01-30 00:41:47,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2018-01-30 00:41:47,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 325. [2018-01-30 00:41:47,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-01-30 00:41:47,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 329 transitions. [2018-01-30 00:41:47,376 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 329 transitions. Word has length 464 [2018-01-30 00:41:47,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:41:47,376 INFO L432 AbstractCegarLoop]: Abstraction has 325 states and 329 transitions. [2018-01-30 00:41:47,376 INFO L433 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-01-30 00:41:47,376 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 329 transitions. [2018-01-30 00:41:47,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2018-01-30 00:41:47,378 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:41:47,378 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 00:41:47,379 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr0AssertViolation]=== [2018-01-30 00:41:47,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1293539763, now seen corresponding path program 20 times [2018-01-30 00:41:47,379 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:41:47,379 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:41:47,379 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:47,380 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:41:47,380 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:47,394 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:41:48,341 INFO L134 CoverageAnalysis]: Checked inductivity of 4074 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 2514 trivial. 0 not checked. [2018-01-30 00:41:48,341 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:41:48,341 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 00:41:48,346 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 00:41:48,364 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:48,396 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:48,402 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:41:48,405 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:41:48,623 INFO L134 CoverageAnalysis]: Checked inductivity of 4074 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 2514 trivial. 0 not checked. [2018-01-30 00:41:48,647 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:41:48,648 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2018-01-30 00:41:48,648 INFO L409 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-01-30 00:41:48,648 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-01-30 00:41:48,648 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2018-01-30 00:41:48,648 INFO L87 Difference]: Start difference. First operand 325 states and 329 transitions. Second operand 45 states. [2018-01-30 00:41:49,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:41:49,185 INFO L93 Difference]: Finished difference Result 489 states and 497 transitions. [2018-01-30 00:41:49,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-01-30 00:41:49,186 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 472 [2018-01-30 00:41:49,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:41:49,187 INFO L225 Difference]: With dead ends: 489 [2018-01-30 00:41:49,187 INFO L226 Difference]: Without dead ends: 338 [2018-01-30 00:41:49,188 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2251, Invalid=4889, Unknown=0, NotChecked=0, Total=7140 [2018-01-30 00:41:49,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-01-30 00:41:49,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 333. [2018-01-30 00:41:49,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-01-30 00:41:49,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 337 transitions. [2018-01-30 00:41:49,192 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 337 transitions. Word has length 472 [2018-01-30 00:41:49,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:41:49,193 INFO L432 AbstractCegarLoop]: Abstraction has 333 states and 337 transitions. [2018-01-30 00:41:49,193 INFO L433 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-01-30 00:41:49,193 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 337 transitions. [2018-01-30 00:41:49,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2018-01-30 00:41:49,194 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:41:49,195 INFO L350 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 24, 24, 24, 22, 21, 21, 21, 21, 21, 21, 21, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:41:49,195 INFO L371 AbstractCegarLoop]: === Iteration 25 === [mainErr0AssertViolation]=== [2018-01-30 00:41:49,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1444131254, now seen corresponding path program 21 times [2018-01-30 00:41:49,195 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:41:49,195 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:41:49,195 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:49,195 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:41:49,195 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:49,209 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:41:50,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4236 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 2514 trivial. 0 not checked. [2018-01-30 00:41:50,197 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:41:50,197 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 00:41:50,201 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 00:41:50,216 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:41:50,220 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:41:50,225 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:41:50,235 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:41:50,245 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:41:50,269 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:41:50,294 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:41:50,403 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:41:50,404 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:41:50,407 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:41:50,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4236 backedges. 1108 proven. 132 refuted. 0 times theorem prover too weak. 2996 trivial. 0 not checked. [2018-01-30 00:41:50,741 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:41:50,741 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 15] total 58 [2018-01-30 00:41:50,741 INFO L409 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-01-30 00:41:50,742 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-01-30 00:41:50,742 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=590, Invalid=2716, Unknown=0, NotChecked=0, Total=3306 [2018-01-30 00:41:50,742 INFO L87 Difference]: Start difference. First operand 333 states and 337 transitions. Second operand 58 states. [2018-01-30 00:41:51,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:41:51,814 INFO L93 Difference]: Finished difference Result 510 states and 519 transitions. [2018-01-30 00:41:51,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-01-30 00:41:51,814 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 480 [2018-01-30 00:41:51,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:41:51,815 INFO L225 Difference]: With dead ends: 510 [2018-01-30 00:41:51,815 INFO L226 Difference]: Without dead ends: 359 [2018-01-30 00:41:51,816 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2660, Invalid=9772, Unknown=0, NotChecked=0, Total=12432 [2018-01-30 00:41:51,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-01-30 00:41:51,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 349. [2018-01-30 00:41:51,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-01-30 00:41:51,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 353 transitions. [2018-01-30 00:41:51,827 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 353 transitions. Word has length 480 [2018-01-30 00:41:51,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:41:51,827 INFO L432 AbstractCegarLoop]: Abstraction has 349 states and 353 transitions. [2018-01-30 00:41:51,827 INFO L433 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-01-30 00:41:51,827 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 353 transitions. [2018-01-30 00:41:51,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2018-01-30 00:41:51,829 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:41:51,829 INFO L350 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 24, 24, 24, 23, 22, 22, 22, 22, 22, 22, 22, 8, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:41:51,829 INFO L371 AbstractCegarLoop]: === Iteration 26 === [mainErr0AssertViolation]=== [2018-01-30 00:41:51,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1919068054, now seen corresponding path program 22 times [2018-01-30 00:41:51,829 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:41:51,829 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:41:51,830 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:51,830 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:41:51,830 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:51,864 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:41:52,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4456 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 2564 trivial. 0 not checked. [2018-01-30 00:41:52,850 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:41:52,851 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 00:41:52,856 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 00:41:53,187 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:41:53,191 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:41:53,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4456 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 2564 trivial. 0 not checked. [2018-01-30 00:41:53,319 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:41:53,320 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2018-01-30 00:41:53,320 INFO L409 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-01-30 00:41:53,320 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-01-30 00:41:53,320 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2018-01-30 00:41:53,320 INFO L87 Difference]: Start difference. First operand 349 states and 353 transitions. Second operand 49 states. [2018-01-30 00:41:54,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:41:54,072 INFO L93 Difference]: Finished difference Result 521 states and 529 transitions. [2018-01-30 00:41:54,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-01-30 00:41:54,073 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 496 [2018-01-30 00:41:54,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:41:54,074 INFO L225 Difference]: With dead ends: 521 [2018-01-30 00:41:54,074 INFO L226 Difference]: Without dead ends: 362 [2018-01-30 00:41:54,083 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1616 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2695, Invalid=5861, Unknown=0, NotChecked=0, Total=8556 [2018-01-30 00:41:54,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2018-01-30 00:41:54,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 357. [2018-01-30 00:41:54,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-01-30 00:41:54,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 361 transitions. [2018-01-30 00:41:54,087 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 361 transitions. Word has length 496 [2018-01-30 00:41:54,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:41:54,087 INFO L432 AbstractCegarLoop]: Abstraction has 357 states and 361 transitions. [2018-01-30 00:41:54,087 INFO L433 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-01-30 00:41:54,087 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 361 transitions. [2018-01-30 00:41:54,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2018-01-30 00:41:54,089 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:41:54,089 INFO L350 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 8, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:41:54,089 INFO L371 AbstractCegarLoop]: === Iteration 27 === [mainErr0AssertViolation]=== [2018-01-30 00:41:54,090 INFO L82 PathProgramCache]: Analyzing trace with hash 271501311, now seen corresponding path program 23 times [2018-01-30 00:41:54,090 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:41:54,090 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:41:54,090 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:54,090 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:41:54,091 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:54,107 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:41:55,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4634 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 2564 trivial. 0 not checked. [2018-01-30 00:41:55,189 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:41:55,189 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 00:41:55,204 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 00:41:55,217 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:55,226 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:55,236 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:55,250 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:55,257 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:55,270 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:55,277 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:55,290 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:55,294 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:55,298 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:55,306 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:55,311 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:55,320 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:55,326 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:55,338 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:55,348 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:55,377 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:55,662 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:55,831 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:56,123 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:56,822 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:57,379 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:41:57,381 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:41:57,387 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:41:57,752 INFO L134 CoverageAnalysis]: Checked inductivity of 4634 backedges. 1102 proven. 240 refuted. 0 times theorem prover too weak. 3292 trivial. 0 not checked. [2018-01-30 00:41:57,772 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:41:57,772 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 19] total 66 [2018-01-30 00:41:57,772 INFO L409 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-01-30 00:41:57,773 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-01-30 00:41:57,773 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=722, Invalid=3568, Unknown=0, NotChecked=0, Total=4290 [2018-01-30 00:41:57,773 INFO L87 Difference]: Start difference. First operand 357 states and 361 transitions. Second operand 66 states. [2018-01-30 00:41:58,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:41:58,931 INFO L93 Difference]: Finished difference Result 542 states and 554 transitions. [2018-01-30 00:41:58,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-01-30 00:41:58,933 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 504 [2018-01-30 00:41:58,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:41:58,934 INFO L225 Difference]: With dead ends: 542 [2018-01-30 00:41:58,934 INFO L226 Difference]: Without dead ends: 383 [2018-01-30 00:41:58,935 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3218 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3280, Invalid=12976, Unknown=0, NotChecked=0, Total=16256 [2018-01-30 00:41:58,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-01-30 00:41:58,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 373. [2018-01-30 00:41:58,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-01-30 00:41:58,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 377 transitions. [2018-01-30 00:41:58,946 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 377 transitions. Word has length 504 [2018-01-30 00:41:58,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:41:58,946 INFO L432 AbstractCegarLoop]: Abstraction has 373 states and 377 transitions. [2018-01-30 00:41:58,946 INFO L433 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-01-30 00:41:58,946 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 377 transitions. [2018-01-30 00:41:58,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2018-01-30 00:41:58,948 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:41:58,948 INFO L350 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 27, 25, 24, 24, 24, 24, 24, 24, 24, 8, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:41:58,948 INFO L371 AbstractCegarLoop]: === Iteration 28 === [mainErr0AssertViolation]=== [2018-01-30 00:41:58,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1837350513, now seen corresponding path program 24 times [2018-01-30 00:41:58,948 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:41:58,948 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:41:58,949 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:58,949 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:41:58,949 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:41:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:41:58,965 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:42:00,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5438 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 3182 trivial. 0 not checked. [2018-01-30 00:42:00,124 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:42:00,124 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 00:42:00,142 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 00:42:00,157 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:42:00,170 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:42:00,182 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:42:00,193 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:42:00,211 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:42:00,230 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:42:00,249 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:42:00,361 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:42:00,425 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:42:00,528 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:42:00,580 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:42:00,669 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:42:00,743 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:42:00,779 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:42:00,825 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:42:01,003 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:42:01,442 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:42:01,445 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:42:01,451 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:42:01,777 INFO L134 CoverageAnalysis]: Checked inductivity of 5438 backedges. 1388 proven. 182 refuted. 0 times theorem prover too weak. 3868 trivial. 0 not checked. [2018-01-30 00:42:01,796 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:42:01,797 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 17] total 66 [2018-01-30 00:42:01,797 INFO L409 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-01-30 00:42:01,797 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-01-30 00:42:01,797 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=754, Invalid=3536, Unknown=0, NotChecked=0, Total=4290 [2018-01-30 00:42:01,798 INFO L87 Difference]: Start difference. First operand 373 states and 377 transitions. Second operand 66 states. [2018-01-30 00:42:04,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:42:04,374 INFO L93 Difference]: Finished difference Result 566 states and 575 transitions. [2018-01-30 00:42:04,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-01-30 00:42:04,374 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 536 [2018-01-30 00:42:04,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:42:04,375 INFO L225 Difference]: With dead ends: 566 [2018-01-30 00:42:04,375 INFO L226 Difference]: Without dead ends: 399 [2018-01-30 00:42:04,376 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3190 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3440, Invalid=12816, Unknown=0, NotChecked=0, Total=16256 [2018-01-30 00:42:04,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-01-30 00:42:04,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 389. [2018-01-30 00:42:04,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-01-30 00:42:04,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 393 transitions. [2018-01-30 00:42:04,382 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 393 transitions. Word has length 536 [2018-01-30 00:42:04,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:42:04,382 INFO L432 AbstractCegarLoop]: Abstraction has 389 states and 393 transitions. [2018-01-30 00:42:04,382 INFO L433 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-01-30 00:42:04,382 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 393 transitions. [2018-01-30 00:42:04,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2018-01-30 00:42:04,384 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:42:04,384 INFO L350 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 27, 26, 25, 25, 25, 25, 25, 25, 25, 9, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:42:04,384 INFO L371 AbstractCegarLoop]: === Iteration 29 === [mainErr0AssertViolation]=== [2018-01-30 00:42:04,384 INFO L82 PathProgramCache]: Analyzing trace with hash -951399343, now seen corresponding path program 25 times [2018-01-30 00:42:04,384 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:42:04,385 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:42:04,385 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:42:04,385 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:42:04,385 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:42:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:42:04,400 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:42:05,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5690 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 3240 trivial. 0 not checked. [2018-01-30 00:42:05,690 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:42:05,690 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:42:05,695 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:42:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:42:05,751 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:42:05,875 INFO L134 CoverageAnalysis]: Checked inductivity of 5690 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 3240 trivial. 0 not checked. [2018-01-30 00:42:05,893 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:42:05,893 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 55 [2018-01-30 00:42:05,893 INFO L409 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-01-30 00:42:05,893 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-01-30 00:42:05,893 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=2187, Unknown=0, NotChecked=0, Total=2970 [2018-01-30 00:42:05,894 INFO L87 Difference]: Start difference. First operand 389 states and 393 transitions. Second operand 55 states. [2018-01-30 00:42:06,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:42:06,779 INFO L93 Difference]: Finished difference Result 577 states and 585 transitions. [2018-01-30 00:42:06,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-01-30 00:42:06,779 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 552 [2018-01-30 00:42:06,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:42:06,780 INFO L225 Difference]: With dead ends: 577 [2018-01-30 00:42:06,780 INFO L226 Difference]: Without dead ends: 402 [2018-01-30 00:42:06,781 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2063 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3436, Invalid=7484, Unknown=0, NotChecked=0, Total=10920 [2018-01-30 00:42:06,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2018-01-30 00:42:06,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 397. [2018-01-30 00:42:06,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-01-30 00:42:06,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 401 transitions. [2018-01-30 00:42:06,786 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 401 transitions. Word has length 552 [2018-01-30 00:42:06,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:42:06,786 INFO L432 AbstractCegarLoop]: Abstraction has 397 states and 401 transitions. [2018-01-30 00:42:06,786 INFO L433 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-01-30 00:42:06,786 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 401 transitions. [2018-01-30 00:42:06,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2018-01-30 00:42:06,788 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:42:06,788 INFO L350 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 9, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:42:06,788 INFO L371 AbstractCegarLoop]: === Iteration 30 === [mainErr0AssertViolation]=== [2018-01-30 00:42:06,788 INFO L82 PathProgramCache]: Analyzing trace with hash 2079235514, now seen corresponding path program 26 times [2018-01-30 00:42:06,788 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:42:06,789 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:42:06,789 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:42:06,789 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:42:06,789 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:42:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:42:06,804 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:42:08,460 INFO L134 CoverageAnalysis]: Checked inductivity of 5892 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 3240 trivial. 0 not checked. [2018-01-30 00:42:08,460 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:42:08,460 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 00:42:08,466 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 00:42:08,479 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:42:08,508 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:42:08,515 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:42:08,519 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:42:08,643 INFO L134 CoverageAnalysis]: Checked inductivity of 5892 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 3240 trivial. 0 not checked. [2018-01-30 00:42:08,661 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:42:08,661 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 57 [2018-01-30 00:42:08,661 INFO L409 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-01-30 00:42:08,661 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-01-30 00:42:08,661 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=840, Invalid=2352, Unknown=0, NotChecked=0, Total=3192 [2018-01-30 00:42:08,662 INFO L87 Difference]: Start difference. First operand 397 states and 401 transitions. Second operand 57 states. [2018-01-30 00:42:09,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:42:09,579 INFO L93 Difference]: Finished difference Result 585 states and 593 transitions. [2018-01-30 00:42:09,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-01-30 00:42:09,579 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 560 [2018-01-30 00:42:09,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:42:09,580 INFO L225 Difference]: With dead ends: 585 [2018-01-30 00:42:09,580 INFO L226 Difference]: Without dead ends: 410 [2018-01-30 00:42:09,581 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 559 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2224 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3703, Invalid=8069, Unknown=0, NotChecked=0, Total=11772 [2018-01-30 00:42:09,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2018-01-30 00:42:09,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 405. [2018-01-30 00:42:09,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2018-01-30 00:42:09,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 409 transitions. [2018-01-30 00:42:09,585 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 409 transitions. Word has length 560 [2018-01-30 00:42:09,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:42:09,586 INFO L432 AbstractCegarLoop]: Abstraction has 405 states and 409 transitions. [2018-01-30 00:42:09,586 INFO L433 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-01-30 00:42:09,586 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 409 transitions. [2018-01-30 00:42:09,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2018-01-30 00:42:09,588 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:42:09,588 INFO L350 BasicCegarLoop]: trace histogram [30, 28, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 9, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:42:09,588 INFO L371 AbstractCegarLoop]: === Iteration 31 === [mainErr0AssertViolation]=== [2018-01-30 00:42:09,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1941768669, now seen corresponding path program 27 times [2018-01-30 00:42:09,588 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:42:09,588 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:42:09,589 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:42:09,589 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:42:09,589 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:42:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:42:09,605 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:42:11,000 INFO L134 CoverageAnalysis]: Checked inductivity of 6102 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 3240 trivial. 0 not checked. [2018-01-30 00:42:11,001 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:42:11,001 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 00:42:11,006 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 00:42:11,021 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:42:11,025 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:42:11,031 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:42:11,043 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:42:11,055 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:42:11,068 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:42:11,092 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:42:11,115 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:42:11,138 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:42:11,163 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:42:11,165 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:42:11,168 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:42:11,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6102 backedges. 1388 proven. 240 refuted. 0 times theorem prover too weak. 4474 trivial. 0 not checked. [2018-01-30 00:42:11,582 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:42:11,582 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 19] total 74 [2018-01-30 00:42:11,583 INFO L409 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-01-30 00:42:11,583 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-01-30 00:42:11,583 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=938, Invalid=4464, Unknown=0, NotChecked=0, Total=5402 [2018-01-30 00:42:11,583 INFO L87 Difference]: Start difference. First operand 405 states and 409 transitions. Second operand 74 states. [2018-01-30 00:42:13,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:42:13,035 INFO L93 Difference]: Finished difference Result 606 states and 615 transitions. [2018-01-30 00:42:13,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-01-30 00:42:13,035 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 568 [2018-01-30 00:42:13,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:42:13,036 INFO L225 Difference]: With dead ends: 606 [2018-01-30 00:42:13,036 INFO L226 Difference]: Without dead ends: 431 [2018-01-30 00:42:13,038 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 552 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4074 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4320, Invalid=16272, Unknown=0, NotChecked=0, Total=20592 [2018-01-30 00:42:13,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-01-30 00:42:13,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 421. [2018-01-30 00:42:13,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-01-30 00:42:13,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 425 transitions. [2018-01-30 00:42:13,041 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 425 transitions. Word has length 568 [2018-01-30 00:42:13,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:42:13,042 INFO L432 AbstractCegarLoop]: Abstraction has 421 states and 425 transitions. [2018-01-30 00:42:13,042 INFO L433 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-01-30 00:42:13,042 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 425 transitions. [2018-01-30 00:42:13,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2018-01-30 00:42:13,044 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:42:13,044 INFO L350 BasicCegarLoop]: trace histogram [30, 29, 28, 28, 28, 28, 28, 28, 28, 27, 27, 27, 27, 27, 27, 27, 10, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:42:13,044 INFO L371 AbstractCegarLoop]: === Iteration 32 === [mainErr0AssertViolation]=== [2018-01-30 00:42:13,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1941156349, now seen corresponding path program 28 times [2018-01-30 00:42:13,044 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:42:13,044 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:42:13,045 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:42:13,045 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:42:13,045 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:42:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:42:13,060 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:42:14,492 INFO L134 CoverageAnalysis]: Checked inductivity of 6386 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2018-01-30 00:42:14,492 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:42:14,492 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 00:42:14,497 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 00:42:15,039 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:42:15,045 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:42:15,181 INFO L134 CoverageAnalysis]: Checked inductivity of 6386 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2018-01-30 00:42:15,200 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:42:15,200 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 61 [2018-01-30 00:42:15,200 INFO L409 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-01-30 00:42:15,200 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-01-30 00:42:15,201 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2018-01-30 00:42:15,201 INFO L87 Difference]: Start difference. First operand 421 states and 425 transitions. Second operand 61 states. [2018-01-30 00:42:16,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:42:16,106 INFO L93 Difference]: Finished difference Result 617 states and 625 transitions. [2018-01-30 00:42:16,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-01-30 00:42:16,106 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 584 [2018-01-30 00:42:16,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:42:16,107 INFO L225 Difference]: With dead ends: 617 [2018-01-30 00:42:16,107 INFO L226 Difference]: Without dead ends: 434 [2018-01-30 00:42:16,108 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 583 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2564 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=4267, Invalid=9305, Unknown=0, NotChecked=0, Total=13572 [2018-01-30 00:42:16,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-01-30 00:42:16,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 429. [2018-01-30 00:42:16,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2018-01-30 00:42:16,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 433 transitions. [2018-01-30 00:42:16,112 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 433 transitions. Word has length 584 [2018-01-30 00:42:16,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:42:16,112 INFO L432 AbstractCegarLoop]: Abstraction has 429 states and 433 transitions. [2018-01-30 00:42:16,112 INFO L433 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-01-30 00:42:16,112 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 433 transitions. [2018-01-30 00:42:16,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2018-01-30 00:42:16,114 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:42:16,114 INFO L350 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 29, 29, 27, 27, 27, 27, 27, 27, 27, 10, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:42:16,114 INFO L371 AbstractCegarLoop]: === Iteration 33 === [mainErr0AssertViolation]=== [2018-01-30 00:42:16,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1293403284, now seen corresponding path program 29 times [2018-01-30 00:42:16,115 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:42:16,115 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:42:16,115 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:42:16,115 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:42:16,115 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:42:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:42:16,130 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:42:17,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2018-01-30 00:42:17,670 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:42:17,670 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 00:42:17,675 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 00:42:17,689 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:42:17,690 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:42:17,691 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:42:17,693 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:42:17,694 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:42:17,696 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:42:17,698 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:42:17,701 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:42:17,703 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:42:17,707 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:42:17,710 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:42:17,716 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:42:17,723 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:42:17,739 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:42:17,748 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:42:17,756 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:42:17,778 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:42:17,799 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:42:17,823 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:42:17,836 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:42:17,877 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:42:18,339 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:42:18,592 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:42:18,998 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:42:19,711 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:42:21,549 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:42:25,741 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown