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 0.1.23-5f7ec6e-m [2018-01-31 08:34:29,950 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 08:34:29,951 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 08:34:29,960 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 08:34:29,960 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 08:34:29,961 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 08:34:29,962 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 08:34:29,963 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 08:34:29,964 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 08:34:29,964 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 08:34:29,965 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 08:34:29,965 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 08:34:29,966 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 08:34:29,966 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 08:34:29,967 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 08:34:29,968 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 08:34:29,969 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 08:34:29,970 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 08:34:29,970 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 08:34:29,971 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 08:34:29,972 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-31 08:34:29,972 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-31 08:34:29,972 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-31 08:34:29,973 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-31 08:34:29,973 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-31 08:34:29,974 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-31 08:34:29,974 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-31 08:34:29,974 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-31 08:34:29,974 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-31 08:34:29,974 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 08:34:29,975 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 08:34:29,975 INFO L98 SettingsManager]: Beginning loading settings from /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-31 08:34:29,980 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 08:34:29,980 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 08:34:29,980 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 08:34:29,980 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 08:34:29,980 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 08:34:29,980 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 08:34:29,980 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 08:34:29,981 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 08:34:29,981 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 08:34:29,981 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 08:34:29,981 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 08:34:29,981 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 08:34:29,981 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-31 08:34:29,981 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 08:34:29,981 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-31 08:34:29,982 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 08:34:29,982 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-31 08:34:29,982 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-31 08:34:29,982 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 08:34:29,982 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 08:34:29,982 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 08:34:29,982 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 08:34:29,982 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 08:34:29,982 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 08:34:29,982 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 08:34:29,983 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 08:34:29,983 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 08:34:29,983 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 08:34:29,983 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 08:34:29,983 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 08:34:29,983 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 08:34:29,983 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 08:34:29,983 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 08:34:29,984 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 08:34:30,002 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 08:34:30,008 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 08:34:30,011 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 08:34:30,011 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 08:34:30,012 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 08:34:30,012 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/avg60_true-unreach-call.i [2018-01-31 08:34:30,075 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 08:34:30,076 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-31 08:34:30,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 08:34:30,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 08:34:30,080 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 08:34:30,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:34:30" (1/1) ... [2018-01-31 08:34:30,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@523eec15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:34:30, skipping insertion in model container [2018-01-31 08:34:30,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:34:30" (1/1) ... [2018-01-31 08:34:30,091 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 08:34:30,100 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 08:34:30,172 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 08:34:30,185 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 08:34:30,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:34:30 WrapperNode [2018-01-31 08:34:30,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 08:34:30,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 08:34:30,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 08:34:30,189 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 08:34:30,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:34:30" (1/1) ... [2018-01-31 08:34:30,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:34:30" (1/1) ... [2018-01-31 08:34:30,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:34:30" (1/1) ... [2018-01-31 08:34:30,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:34:30" (1/1) ... [2018-01-31 08:34:30,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:34:30" (1/1) ... [2018-01-31 08:34:30,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:34:30" (1/1) ... [2018-01-31 08:34:30,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:34:30" (1/1) ... [2018-01-31 08:34:30,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 08:34:30,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 08:34:30,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 08:34:30,209 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 08:34:30,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:34:30" (1/1) ... No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 08:34:30,246 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 08:34:30,246 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 08:34:30,246 INFO L136 BoogieDeclarations]: Found implementation of procedure avg [2018-01-31 08:34:30,247 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 08:34:30,247 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 08:34:30,247 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 08:34:30,247 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 08:34:30,247 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 08:34:30,247 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 08:34:30,247 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-31 08:34:30,247 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 08:34:30,247 INFO L128 BoogieDeclarations]: Found specification of procedure avg [2018-01-31 08:34:30,247 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 08:34:30,247 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 08:34:30,248 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 08:34:30,608 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 08:34:30,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:34:30 BoogieIcfgContainer [2018-01-31 08:34:30,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 08:34:30,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 08:34:30,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 08:34:30,611 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 08:34:30,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 08:34:30" (1/3) ... [2018-01-31 08:34:30,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3bb46a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:34:30, skipping insertion in model container [2018-01-31 08:34:30,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:34:30" (2/3) ... [2018-01-31 08:34:30,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3bb46a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:34:30, skipping insertion in model container [2018-01-31 08:34:30,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:34:30" (3/3) ... [2018-01-31 08:34:30,613 INFO L107 eAbstractionObserver]: Analyzing ICFG avg60_true-unreach-call.i [2018-01-31 08:34:30,619 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 08:34:30,623 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-31 08:34:30,647 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 08:34:30,648 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 08:34:30,648 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 08:34:30,648 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 08:34:30,648 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 08:34:30,648 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 08:34:30,648 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 08:34:30,648 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 08:34:30,648 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 08:34:30,658 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2018-01-31 08:34:30,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-01-31 08:34:30,662 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:34:30,663 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:34:30,663 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolation]=== [2018-01-31 08:34:30,666 INFO L82 PathProgramCache]: Analyzing trace with hash 951170667, now seen corresponding path program 1 times [2018-01-31 08:34:30,667 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:34:30,667 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:34:30,698 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:30,698 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:34:30,698 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:30,728 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:34:30,778 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-01-31 08:34:30,780 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:34:30,780 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 08:34:30,781 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-31 08:34:30,788 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-31 08:34:30,788 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 08:34:30,790 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 2 states. [2018-01-31 08:34:30,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:34:30,806 INFO L93 Difference]: Finished difference Result 136 states and 153 transitions. [2018-01-31 08:34:30,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-31 08:34:30,807 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 67 [2018-01-31 08:34:30,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:34:30,812 INFO L225 Difference]: With dead ends: 136 [2018-01-31 08:34:30,812 INFO L226 Difference]: Without dead ends: 71 [2018-01-31 08:34:30,814 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 08:34:30,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-01-31 08:34:30,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-01-31 08:34:30,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-01-31 08:34:30,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2018-01-31 08:34:30,838 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 67 [2018-01-31 08:34:30,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:34:30,838 INFO L432 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2018-01-31 08:34:30,838 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-31 08:34:30,838 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2018-01-31 08:34:30,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-01-31 08:34:30,840 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:34:30,840 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:34:30,840 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolation]=== [2018-01-31 08:34:30,841 INFO L82 PathProgramCache]: Analyzing trace with hash 352061447, now seen corresponding path program 1 times [2018-01-31 08:34:30,841 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:34:30,841 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:34:30,842 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:30,842 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:34:30,842 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:30,908 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:34:31,003 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-01-31 08:34:31,004 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:34:31,004 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 08:34:31,005 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 08:34:31,006 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 08:34:31,007 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 08:34:31,008 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 3 states. [2018-01-31 08:34:31,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:34:31,047 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2018-01-31 08:34:31,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 08:34:31,049 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2018-01-31 08:34:31,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:34:31,050 INFO L225 Difference]: With dead ends: 129 [2018-01-31 08:34:31,050 INFO L226 Difference]: Without dead ends: 78 [2018-01-31 08:34:31,051 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 08:34:31,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-01-31 08:34:31,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2018-01-31 08:34:31,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-01-31 08:34:31,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2018-01-31 08:34:31,058 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 72 [2018-01-31 08:34:31,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:34:31,058 INFO L432 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2018-01-31 08:34:31,058 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 08:34:31,058 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2018-01-31 08:34:31,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-01-31 08:34:31,059 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:34:31,059 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:34:31,060 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolation]=== [2018-01-31 08:34:31,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1617545872, now seen corresponding path program 1 times [2018-01-31 08:34:31,060 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:34:31,060 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:34:31,063 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:31,063 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:34:31,063 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:31,072 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:34:31,153 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-01-31 08:34:31,153 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:34:31,153 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:34:31,169 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:34:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:31,219 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:34:31,321 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-01-31 08:34:31,337 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:34:31,337 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 08:34:31,338 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 08:34:31,338 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 08:34:31,338 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 08:34:31,338 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 6 states. [2018-01-31 08:34:31,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:34:31,574 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2018-01-31 08:34:31,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 08:34:31,574 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2018-01-31 08:34:31,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:34:31,575 INFO L225 Difference]: With dead ends: 144 [2018-01-31 08:34:31,575 INFO L226 Difference]: Without dead ends: 93 [2018-01-31 08:34:31,576 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-31 08:34:31,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-01-31 08:34:31,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2018-01-31 08:34:31,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-01-31 08:34:31,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2018-01-31 08:34:31,580 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 80 [2018-01-31 08:34:31,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:34:31,580 INFO L432 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2018-01-31 08:34:31,580 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 08:34:31,580 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2018-01-31 08:34:31,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-01-31 08:34:31,581 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:34:31,581 INFO L351 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:34:31,582 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolation]=== [2018-01-31 08:34:31,582 INFO L82 PathProgramCache]: Analyzing trace with hash -904252446, now seen corresponding path program 1 times [2018-01-31 08:34:31,582 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:34:31,582 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:34:31,582 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:31,583 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:34:31,583 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:31,594 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:34:31,703 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-01-31 08:34:31,704 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:34:31,704 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-01-31 08:34:31,711 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:34:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:31,743 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:34:31,774 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-01-31 08:34:31,791 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:34:31,791 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 08:34:31,791 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 08:34:31,791 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 08:34:31,792 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 08:34:31,792 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 6 states. [2018-01-31 08:34:31,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:34:31,910 INFO L93 Difference]: Finished difference Result 155 states and 166 transitions. [2018-01-31 08:34:31,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 08:34:31,912 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-01-31 08:34:31,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:34:31,913 INFO L225 Difference]: With dead ends: 155 [2018-01-31 08:34:31,913 INFO L226 Difference]: Without dead ends: 103 [2018-01-31 08:34:31,914 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-31 08:34:31,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-01-31 08:34:31,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 93. [2018-01-31 08:34:31,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-01-31 08:34:31,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2018-01-31 08:34:31,921 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 112 [2018-01-31 08:34:31,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:34:31,921 INFO L432 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2018-01-31 08:34:31,921 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 08:34:31,921 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2018-01-31 08:34:31,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-01-31 08:34:31,922 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:34:31,923 INFO L351 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:34:31,923 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolation]=== [2018-01-31 08:34:31,923 INFO L82 PathProgramCache]: Analyzing trace with hash -705814942, now seen corresponding path program 1 times [2018-01-31 08:34:31,923 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:34:31,923 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:34:31,924 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:31,924 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:34:31,924 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:31,939 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:34:32,034 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-01-31 08:34:32,035 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:34:32,035 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:34:32,040 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:34:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:32,072 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:34:32,131 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2018-01-31 08:34:32,147 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:34:32,147 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2018-01-31 08:34:32,148 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-31 08:34:32,148 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-31 08:34:32,148 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-31 08:34:32,148 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 10 states. [2018-01-31 08:34:32,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:34:32,514 INFO L93 Difference]: Finished difference Result 182 states and 191 transitions. [2018-01-31 08:34:32,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-31 08:34:32,514 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 144 [2018-01-31 08:34:32,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:34:32,515 INFO L225 Difference]: With dead ends: 182 [2018-01-31 08:34:32,515 INFO L226 Difference]: Without dead ends: 119 [2018-01-31 08:34:32,516 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-01-31 08:34:32,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-01-31 08:34:32,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 109. [2018-01-31 08:34:32,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-01-31 08:34:32,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2018-01-31 08:34:32,520 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 144 [2018-01-31 08:34:32,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:34:32,521 INFO L432 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2018-01-31 08:34:32,521 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-31 08:34:32,521 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2018-01-31 08:34:32,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-01-31 08:34:32,522 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:34:32,522 INFO L351 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:34:32,522 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolation]=== [2018-01-31 08:34:32,522 INFO L82 PathProgramCache]: Analyzing trace with hash 448042562, now seen corresponding path program 2 times [2018-01-31 08:34:32,522 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:34:32,522 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:34:32,523 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:32,523 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:34:32,523 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:32,541 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:34:32,692 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-01-31 08:34:32,692 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:34:32,692 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:34:32,697 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:34:32,714 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:32,738 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:32,748 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:34:32,750 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:34:33,061 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-01-31 08:34:33,078 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:34:33,078 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2018-01-31 08:34:33,079 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-31 08:34:33,079 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-31 08:34:33,079 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-01-31 08:34:33,079 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 14 states. [2018-01-31 08:34:33,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:34:33,346 INFO L93 Difference]: Finished difference Result 206 states and 218 transitions. [2018-01-31 08:34:33,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-31 08:34:33,346 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 160 [2018-01-31 08:34:33,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:34:33,347 INFO L225 Difference]: With dead ends: 206 [2018-01-31 08:34:33,347 INFO L226 Difference]: Without dead ends: 135 [2018-01-31 08:34:33,348 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2018-01-31 08:34:33,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-01-31 08:34:33,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 125. [2018-01-31 08:34:33,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-01-31 08:34:33,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2018-01-31 08:34:33,352 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 160 [2018-01-31 08:34:33,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:34:33,352 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2018-01-31 08:34:33,352 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-31 08:34:33,352 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2018-01-31 08:34:33,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-01-31 08:34:33,353 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:34:33,354 INFO L351 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:34:33,354 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolation]=== [2018-01-31 08:34:33,354 INFO L82 PathProgramCache]: Analyzing trace with hash 651681972, now seen corresponding path program 3 times [2018-01-31 08:34:33,354 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:34:33,354 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:34:33,355 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:33,355 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:34:33,355 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:33,369 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:34:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2018-01-31 08:34:33,574 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:34:33,574 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:34:33,580 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:34:33,598 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:33,603 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:33,611 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:33,619 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:33,620 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:34:33,625 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:34:33,653 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 188 proven. 12 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-01-31 08:34:33,670 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:34:33,671 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-01-31 08:34:33,671 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 08:34:33,671 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 08:34:33,671 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-31 08:34:33,671 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand 9 states. [2018-01-31 08:34:33,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:34:33,736 INFO L93 Difference]: Finished difference Result 180 states and 185 transitions. [2018-01-31 08:34:33,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-31 08:34:33,736 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 192 [2018-01-31 08:34:33,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:34:33,737 INFO L225 Difference]: With dead ends: 180 [2018-01-31 08:34:33,737 INFO L226 Difference]: Without dead ends: 138 [2018-01-31 08:34:33,738 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-01-31 08:34:33,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-01-31 08:34:33,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 133. [2018-01-31 08:34:33,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-01-31 08:34:33,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 137 transitions. [2018-01-31 08:34:33,743 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 137 transitions. Word has length 192 [2018-01-31 08:34:33,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:34:33,744 INFO L432 AbstractCegarLoop]: Abstraction has 133 states and 137 transitions. [2018-01-31 08:34:33,744 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 08:34:33,744 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 137 transitions. [2018-01-31 08:34:33,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-01-31 08:34:33,745 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:34:33,745 INFO L351 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:34:33,746 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolation]=== [2018-01-31 08:34:33,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1257913045, now seen corresponding path program 4 times [2018-01-31 08:34:33,746 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:34:33,746 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:34:33,746 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:33,746 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:34:33,746 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:33,758 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:34:33,857 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2018-01-31 08:34:33,857 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:34:33,857 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:34:33,862 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:34:33,900 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:34:33,902 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:34:33,959 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2018-01-31 08:34:33,976 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:34:33,976 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2018-01-31 08:34:33,976 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-31 08:34:33,976 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-31 08:34:33,977 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-31 08:34:33,977 INFO L87 Difference]: Start difference. First operand 133 states and 137 transitions. Second operand 13 states. [2018-01-31 08:34:34,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:34:34,080 INFO L93 Difference]: Finished difference Result 233 states and 241 transitions. [2018-01-31 08:34:34,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-31 08:34:34,094 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 200 [2018-01-31 08:34:34,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:34:34,095 INFO L225 Difference]: With dead ends: 233 [2018-01-31 08:34:34,095 INFO L226 Difference]: Without dead ends: 146 [2018-01-31 08:34:34,095 INFO L554 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 [2018-01-31 08:34:34,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-31 08:34:34,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 141. [2018-01-31 08:34:34,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-01-31 08:34:34,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 145 transitions. [2018-01-31 08:34:34,099 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 145 transitions. Word has length 200 [2018-01-31 08:34:34,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:34:34,099 INFO L432 AbstractCegarLoop]: Abstraction has 141 states and 145 transitions. [2018-01-31 08:34:34,099 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-31 08:34:34,099 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 145 transitions. [2018-01-31 08:34:34,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-01-31 08:34:34,102 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:34:34,102 INFO L351 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:34:34,102 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolation]=== [2018-01-31 08:34:34,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1725930860, now seen corresponding path program 5 times [2018-01-31 08:34:34,102 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:34:34,102 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:34:34,103 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:34,103 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:34:34,103 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:34,117 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:34:34,445 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2018-01-31 08:34:34,446 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:34:34,446 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:34:34,450 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:34:34,458 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:34,461 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:34,467 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:34,473 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:34,474 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:34:34,476 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:34:34,542 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 182 proven. 30 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-01-31 08:34:34,559 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:34:34,559 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2018-01-31 08:34:34,560 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-31 08:34:34,560 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-31 08:34:34,560 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2018-01-31 08:34:34,560 INFO L87 Difference]: Start difference. First operand 141 states and 145 transitions. Second operand 20 states. [2018-01-31 08:34:34,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:34:34,838 INFO L93 Difference]: Finished difference Result 254 states and 266 transitions. [2018-01-31 08:34:34,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-31 08:34:34,839 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 208 [2018-01-31 08:34:34,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:34:34,840 INFO L225 Difference]: With dead ends: 254 [2018-01-31 08:34:34,840 INFO L226 Difference]: Without dead ends: 167 [2018-01-31 08:34:34,841 INFO L554 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 [2018-01-31 08:34:34,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-01-31 08:34:34,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 157. [2018-01-31 08:34:34,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-01-31 08:34:34,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 161 transitions. [2018-01-31 08:34:34,844 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 161 transitions. Word has length 208 [2018-01-31 08:34:34,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:34:34,844 INFO L432 AbstractCegarLoop]: Abstraction has 157 states and 161 transitions. [2018-01-31 08:34:34,844 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-01-31 08:34:34,844 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 161 transitions. [2018-01-31 08:34:34,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-01-31 08:34:34,845 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:34:34,845 INFO L351 BasicCegarLoop]: trace histogram [15, 12, 12, 12, 12, 12, 12, 12, 7, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:34:34,845 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolation]=== [2018-01-31 08:34:34,846 INFO L82 PathProgramCache]: Analyzing trace with hash 486960902, now seen corresponding path program 6 times [2018-01-31 08:34:34,846 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:34:34,846 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:34:34,846 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:34,846 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:34:34,846 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:34,858 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:34:35,034 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-01-31 08:34:35,034 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:34:35,034 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:34:35,039 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:34:35,050 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:35,052 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:35,056 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:35,060 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:35,065 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:35,081 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:35,089 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:35,090 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:34:35,092 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:34:35,196 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 454 proven. 56 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2018-01-31 08:34:35,213 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:34:35,214 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2018-01-31 08:34:35,214 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-31 08:34:35,214 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-31 08:34:35,214 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2018-01-31 08:34:35,214 INFO L87 Difference]: Start difference. First operand 157 states and 161 transitions. Second operand 24 states. [2018-01-31 08:34:35,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:34:35,483 INFO L93 Difference]: Finished difference Result 278 states and 290 transitions. [2018-01-31 08:34:35,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-31 08:34:35,492 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 240 [2018-01-31 08:34:35,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:34:35,492 INFO L225 Difference]: With dead ends: 278 [2018-01-31 08:34:35,493 INFO L226 Difference]: Without dead ends: 183 [2018-01-31 08:34:35,493 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=365, Invalid=1527, Unknown=0, NotChecked=0, Total=1892 [2018-01-31 08:34:35,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-01-31 08:34:35,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 173. [2018-01-31 08:34:35,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-01-31 08:34:35,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 177 transitions. [2018-01-31 08:34:35,497 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 177 transitions. Word has length 240 [2018-01-31 08:34:35,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:34:35,498 INFO L432 AbstractCegarLoop]: Abstraction has 173 states and 177 transitions. [2018-01-31 08:34:35,498 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-31 08:34:35,498 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 177 transitions. [2018-01-31 08:34:35,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-01-31 08:34:35,498 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:34:35,499 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 8, 7, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:34:35,499 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolation]=== [2018-01-31 08:34:35,499 INFO L82 PathProgramCache]: Analyzing trace with hash 2007982456, now seen corresponding path program 7 times [2018-01-31 08:34:35,499 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:34:35,499 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:34:35,499 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:35,500 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:34:35,500 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:35,511 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:34:35,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-31 08:34:35,867 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:34:35,867 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:34:35,872 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:34:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:35,920 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:34:36,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-31 08:34:36,295 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:34:36,295 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2018-01-31 08:34:36,295 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-31 08:34:36,295 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-31 08:34:36,295 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-31 08:34:36,296 INFO L87 Difference]: Start difference. First operand 173 states and 177 transitions. Second operand 19 states. [2018-01-31 08:34:36,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:34:36,497 INFO L93 Difference]: Finished difference Result 289 states and 297 transitions. [2018-01-31 08:34:36,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-31 08:34:36,508 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 272 [2018-01-31 08:34:36,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:34:36,508 INFO L225 Difference]: With dead ends: 289 [2018-01-31 08:34:36,508 INFO L226 Difference]: Without dead ends: 186 [2018-01-31 08:34:36,509 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 08:34:36,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-01-31 08:34:36,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 181. [2018-01-31 08:34:36,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-01-31 08:34:36,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 185 transitions. [2018-01-31 08:34:36,512 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 185 transitions. Word has length 272 [2018-01-31 08:34:36,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:34:36,512 INFO L432 AbstractCegarLoop]: Abstraction has 181 states and 185 transitions. [2018-01-31 08:34:36,512 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-31 08:34:36,512 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 185 transitions. [2018-01-31 08:34:36,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-01-31 08:34:36,513 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:34:36,513 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 9, 8, 8, 8, 8, 8, 8, 8, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:34:36,513 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolation]=== [2018-01-31 08:34:36,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1034502687, now seen corresponding path program 8 times [2018-01-31 08:34:36,513 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:34:36,513 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:34:36,514 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:36,514 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:34:36,514 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:36,524 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:34:36,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-31 08:34:36,737 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:34:36,737 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:34:36,747 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:34:36,763 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:36,783 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:36,787 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:34:36,789 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:34:36,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-31 08:34:36,898 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:34:36,898 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-31 08:34:36,899 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 08:34:36,899 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 08:34:36,899 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-31 08:34:36,899 INFO L87 Difference]: Start difference. First operand 181 states and 185 transitions. Second operand 21 states. [2018-01-31 08:34:37,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:34:37,100 INFO L93 Difference]: Finished difference Result 297 states and 305 transitions. [2018-01-31 08:34:37,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-31 08:34:37,111 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 280 [2018-01-31 08:34:37,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:34:37,112 INFO L225 Difference]: With dead ends: 297 [2018-01-31 08:34:37,112 INFO L226 Difference]: Without dead ends: 194 [2018-01-31 08:34:37,112 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 08:34:37,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-01-31 08:34:37,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 189. [2018-01-31 08:34:37,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-31 08:34:37,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 193 transitions. [2018-01-31 08:34:37,115 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 193 transitions. Word has length 280 [2018-01-31 08:34:37,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:34:37,115 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 193 transitions. [2018-01-31 08:34:37,115 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 08:34:37,116 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 193 transitions. [2018-01-31 08:34:37,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-01-31 08:34:37,116 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:34:37,117 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 10, 9, 9, 9, 9, 9, 9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:34:37,117 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolation]=== [2018-01-31 08:34:37,117 INFO L82 PathProgramCache]: Analyzing trace with hash -571236022, now seen corresponding path program 9 times [2018-01-31 08:34:37,117 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:34:37,117 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:34:37,117 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:37,117 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:34:37,118 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:37,129 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:34:37,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-31 08:34:37,374 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:34:37,374 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:34:37,379 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:34:37,395 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:37,399 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:37,404 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:37,421 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:37,436 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:37,437 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:34:37,441 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:34:37,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 460 proven. 30 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2018-01-31 08:34:37,566 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:34:37,566 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9] total 28 [2018-01-31 08:34:37,567 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-31 08:34:37,567 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-31 08:34:37,567 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2018-01-31 08:34:37,567 INFO L87 Difference]: Start difference. First operand 189 states and 193 transitions. Second operand 28 states. [2018-01-31 08:34:37,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:34:37,912 INFO L93 Difference]: Finished difference Result 318 states and 327 transitions. [2018-01-31 08:34:37,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-31 08:34:37,912 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 288 [2018-01-31 08:34:37,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:34:37,913 INFO L225 Difference]: With dead ends: 318 [2018-01-31 08:34:37,913 INFO L226 Difference]: Without dead ends: 215 [2018-01-31 08:34:37,914 INFO L554 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 [2018-01-31 08:34:37,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-01-31 08:34:37,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 205. [2018-01-31 08:34:37,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-01-31 08:34:37,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 209 transitions. [2018-01-31 08:34:37,917 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 209 transitions. Word has length 288 [2018-01-31 08:34:37,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:34:37,917 INFO L432 AbstractCegarLoop]: Abstraction has 205 states and 209 transitions. [2018-01-31 08:34:37,917 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-31 08:34:37,917 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 209 transitions. [2018-01-31 08:34:37,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-01-31 08:34:37,920 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:34:37,921 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 11, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:34:37,921 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolation]=== [2018-01-31 08:34:37,921 INFO L82 PathProgramCache]: Analyzing trace with hash 2113676586, now seen corresponding path program 10 times [2018-01-31 08:34:37,921 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:34:37,921 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:34:37,921 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:37,921 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:34:37,921 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:37,958 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:34:38,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 1016 trivial. 0 not checked. [2018-01-31 08:34:38,501 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:34:38,502 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:34:38,506 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:34:38,560 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:34:38,564 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:34:38,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 1016 trivial. 0 not checked. [2018-01-31 08:34:38,649 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:34:38,649 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2018-01-31 08:34:38,649 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-31 08:34:38,650 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-31 08:34:38,650 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-01-31 08:34:38,650 INFO L87 Difference]: Start difference. First operand 205 states and 209 transitions. Second operand 25 states. [2018-01-31 08:34:38,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:34:38,884 INFO L93 Difference]: Finished difference Result 329 states and 337 transitions. [2018-01-31 08:34:38,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-31 08:34:38,894 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 304 [2018-01-31 08:34:38,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:34:38,895 INFO L225 Difference]: With dead ends: 329 [2018-01-31 08:34:38,895 INFO L226 Difference]: Without dead ends: 218 [2018-01-31 08:34:38,896 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2018-01-31 08:34:38,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-01-31 08:34:38,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 213. [2018-01-31 08:34:38,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-01-31 08:34:38,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 217 transitions. [2018-01-31 08:34:38,898 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 217 transitions. Word has length 304 [2018-01-31 08:34:38,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:34:38,899 INFO L432 AbstractCegarLoop]: Abstraction has 213 states and 217 transitions. [2018-01-31 08:34:38,899 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-31 08:34:38,899 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 217 transitions. [2018-01-31 08:34:38,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-01-31 08:34:38,900 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:34:38,900 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 12, 11, 11, 11, 11, 11, 11, 11, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:34:38,900 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolation]=== [2018-01-31 08:34:38,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1850761837, now seen corresponding path program 11 times [2018-01-31 08:34:38,900 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:34:38,900 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:34:38,901 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:38,901 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:34:38,901 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:38,912 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:34:39,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1478 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 1016 trivial. 0 not checked. [2018-01-31 08:34:39,562 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:34:39,562 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:34:39,567 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:34:39,577 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:39,579 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:39,580 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:39,581 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:39,584 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:39,587 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:39,592 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:39,597 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:39,606 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:39,651 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:39,652 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:34:39,655 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:34:39,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1478 backedges. 454 proven. 90 refuted. 0 times theorem prover too weak. 934 trivial. 0 not checked. [2018-01-31 08:34:39,797 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:34:39,798 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13] total 36 [2018-01-31 08:34:39,798 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-31 08:34:39,798 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-31 08:34:39,798 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1045, Unknown=0, NotChecked=0, Total=1260 [2018-01-31 08:34:39,798 INFO L87 Difference]: Start difference. First operand 213 states and 217 transitions. Second operand 36 states. [2018-01-31 08:34:40,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:34:40,482 INFO L93 Difference]: Finished difference Result 350 states and 362 transitions. [2018-01-31 08:34:40,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-01-31 08:34:40,482 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 312 [2018-01-31 08:34:40,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:34:40,483 INFO L225 Difference]: With dead ends: 350 [2018-01-31 08:34:40,483 INFO L226 Difference]: Without dead ends: 239 [2018-01-31 08:34:40,484 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=895, Invalid=3661, Unknown=0, NotChecked=0, Total=4556 [2018-01-31 08:34:40,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-01-31 08:34:40,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 229. [2018-01-31 08:34:40,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-01-31 08:34:40,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2018-01-31 08:34:40,487 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 312 [2018-01-31 08:34:40,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:34:40,487 INFO L432 AbstractCegarLoop]: Abstraction has 229 states and 233 transitions. [2018-01-31 08:34:40,487 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-31 08:34:40,487 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 233 transitions. [2018-01-31 08:34:40,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-01-31 08:34:40,488 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:34:40,488 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 18, 18, 18, 13, 12, 12, 12, 12, 12, 12, 12, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:34:40,488 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolation]=== [2018-01-31 08:34:40,488 INFO L82 PathProgramCache]: Analyzing trace with hash 805021189, now seen corresponding path program 12 times [2018-01-31 08:34:40,489 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:34:40,489 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:34:40,489 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:40,489 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:34:40,489 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:40,501 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:34:41,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1970 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 1418 trivial. 0 not checked. [2018-01-31 08:34:41,072 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:34:41,072 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-01-31 08:34:41,078 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:34:41,090 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:41,101 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:41,107 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:41,110 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:41,114 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:41,146 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:41,161 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:41,196 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:41,269 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:41,339 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:41,435 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:41,436 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:34:41,440 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:34:41,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1970 backedges. 644 proven. 56 refuted. 0 times theorem prover too weak. 1270 trivial. 0 not checked. [2018-01-31 08:34:41,599 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:34:41,599 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 11] total 36 [2018-01-31 08:34:41,600 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-31 08:34:41,600 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-31 08:34:41,600 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1031, Unknown=0, NotChecked=0, Total=1260 [2018-01-31 08:34:41,600 INFO L87 Difference]: Start difference. First operand 229 states and 233 transitions. Second operand 36 states. [2018-01-31 08:34:42,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:34:42,007 INFO L93 Difference]: Finished difference Result 374 states and 383 transitions. [2018-01-31 08:34:42,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-01-31 08:34:42,007 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 344 [2018-01-31 08:34:42,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:34:42,008 INFO L225 Difference]: With dead ends: 374 [2018-01-31 08:34:42,008 INFO L226 Difference]: Without dead ends: 255 [2018-01-31 08:34:42,009 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=965, Invalid=3591, Unknown=0, NotChecked=0, Total=4556 [2018-01-31 08:34:42,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-01-31 08:34:42,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 245. [2018-01-31 08:34:42,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-01-31 08:34:42,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 249 transitions. [2018-01-31 08:34:42,012 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 249 transitions. Word has length 344 [2018-01-31 08:34:42,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:34:42,012 INFO L432 AbstractCegarLoop]: Abstraction has 245 states and 249 transitions. [2018-01-31 08:34:42,012 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-31 08:34:42,012 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 249 transitions. [2018-01-31 08:34:42,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-01-31 08:34:42,013 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:34:42,013 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 18, 18, 18, 14, 13, 13, 13, 13, 13, 13, 13, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:34:42,013 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolation]=== [2018-01-31 08:34:42,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1064452581, now seen corresponding path program 13 times [2018-01-31 08:34:42,014 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:34:42,014 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:34:42,014 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:42,014 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:34:42,014 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:42,026 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:34:42,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2102 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2018-01-31 08:34:42,505 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:34:42,505 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:34:42,513 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:34:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:42,558 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:34:43,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2102 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2018-01-31 08:34:43,045 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:34:43,045 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2018-01-31 08:34:43,045 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-31 08:34:43,045 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-31 08:34:43,045 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-31 08:34:43,046 INFO L87 Difference]: Start difference. First operand 245 states and 249 transitions. Second operand 31 states. [2018-01-31 08:34:43,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:34:43,818 INFO L93 Difference]: Finished difference Result 385 states and 393 transitions. [2018-01-31 08:34:43,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-31 08:34:43,828 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 360 [2018-01-31 08:34:43,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:34:43,828 INFO L225 Difference]: With dead ends: 385 [2018-01-31 08:34:43,828 INFO L226 Difference]: Without dead ends: 258 [2018-01-31 08:34:43,829 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2018-01-31 08:34:43,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-01-31 08:34:43,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 253. [2018-01-31 08:34:43,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-01-31 08:34:43,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 257 transitions. [2018-01-31 08:34:43,832 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 257 transitions. Word has length 360 [2018-01-31 08:34:43,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:34:43,833 INFO L432 AbstractCegarLoop]: Abstraction has 253 states and 257 transitions. [2018-01-31 08:34:43,833 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-31 08:34:43,833 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 257 transitions. [2018-01-31 08:34:43,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-01-31 08:34:43,834 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:34:43,834 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 18, 18, 18, 15, 14, 14, 14, 14, 14, 14, 14, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:34:43,834 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolation]=== [2018-01-31 08:34:43,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1813343054, now seen corresponding path program 14 times [2018-01-31 08:34:43,834 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:34:43,834 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:34:43,835 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:43,835 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:34:43,835 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:43,848 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:34:44,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2208 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2018-01-31 08:34:44,680 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:34:44,680 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) [2018-01-31 08:34:44,694 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:34:44,706 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:44,736 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:44,744 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:34:44,747 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:34:44,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2208 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2018-01-31 08:34:44,872 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:34:44,872 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2018-01-31 08:34:44,872 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-31 08:34:44,873 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-31 08:34:44,873 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 08:34:44,873 INFO L87 Difference]: Start difference. First operand 253 states and 257 transitions. Second operand 33 states. [2018-01-31 08:34:45,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:34:45,177 INFO L93 Difference]: Finished difference Result 393 states and 401 transitions. [2018-01-31 08:34:45,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-31 08:34:45,178 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 368 [2018-01-31 08:34:45,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:34:45,179 INFO L225 Difference]: With dead ends: 393 [2018-01-31 08:34:45,179 INFO L226 Difference]: Without dead ends: 266 [2018-01-31 08:34:45,180 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2018-01-31 08:34:45,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-01-31 08:34:45,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 261. [2018-01-31 08:34:45,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-01-31 08:34:45,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 265 transitions. [2018-01-31 08:34:45,183 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 265 transitions. Word has length 368 [2018-01-31 08:34:45,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:34:45,183 INFO L432 AbstractCegarLoop]: Abstraction has 261 states and 265 transitions. [2018-01-31 08:34:45,183 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-31 08:34:45,183 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 265 transitions. [2018-01-31 08:34:45,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-01-31 08:34:45,184 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:34:45,185 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 18, 18, 18, 16, 15, 15, 15, 15, 15, 15, 15, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:34:45,185 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolation]=== [2018-01-31 08:34:45,185 INFO L82 PathProgramCache]: Analyzing trace with hash 194059191, now seen corresponding path program 15 times [2018-01-31 08:34:45,185 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:34:45,185 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:34:45,185 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:45,185 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:34:45,186 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:45,197 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:34:45,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2018-01-31 08:34:45,819 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:34:45,819 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:34:45,825 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:34:45,838 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:45,843 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:45,848 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:45,856 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:45,874 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:45,899 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:45,911 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:45,913 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:34:45,915 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:34:46,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 634 proven. 132 refuted. 0 times theorem prover too weak. 1556 trivial. 0 not checked. [2018-01-31 08:34:46,134 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:34:46,134 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 15] total 46 [2018-01-31 08:34:46,135 INFO L409 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-01-31 08:34:46,135 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-01-31 08:34:46,135 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1720, Unknown=0, NotChecked=0, Total=2070 [2018-01-31 08:34:46,135 INFO L87 Difference]: Start difference. First operand 261 states and 265 transitions. Second operand 46 states. [2018-01-31 08:34:46,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:34:46,936 INFO L93 Difference]: Finished difference Result 414 states and 426 transitions. [2018-01-31 08:34:46,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-01-31 08:34:46,938 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 376 [2018-01-31 08:34:46,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:34:46,939 INFO L225 Difference]: With dead ends: 414 [2018-01-31 08:34:46,939 INFO L226 Difference]: Without dead ends: 287 [2018-01-31 08:34:46,941 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1478 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1520, Invalid=6136, Unknown=0, NotChecked=0, Total=7656 [2018-01-31 08:34:46,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-01-31 08:34:46,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 277. [2018-01-31 08:34:46,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-01-31 08:34:46,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 281 transitions. [2018-01-31 08:34:46,945 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 281 transitions. Word has length 376 [2018-01-31 08:34:46,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:34:46,945 INFO L432 AbstractCegarLoop]: Abstraction has 277 states and 281 transitions. [2018-01-31 08:34:46,945 INFO L433 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-01-31 08:34:46,945 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 281 transitions. [2018-01-31 08:34:46,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-01-31 08:34:46,946 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:34:46,946 INFO L351 BasicCegarLoop]: trace histogram [24, 21, 21, 21, 21, 21, 21, 21, 17, 16, 16, 16, 16, 16, 16, 16, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:34:46,946 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolation]=== [2018-01-31 08:34:46,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1980621271, now seen corresponding path program 16 times [2018-01-31 08:34:46,947 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:34:46,947 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:34:46,947 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:46,947 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:34:46,947 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:46,959 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:34:47,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2918 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 1926 trivial. 0 not checked. [2018-01-31 08:34:47,488 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:34:47,488 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:34:47,492 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:34:47,608 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:34:47,612 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:34:47,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2918 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 1926 trivial. 0 not checked. [2018-01-31 08:34:47,767 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:34:47,767 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2018-01-31 08:34:47,768 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-31 08:34:47,768 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-31 08:34:47,768 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 08:34:47,768 INFO L87 Difference]: Start difference. First operand 277 states and 281 transitions. Second operand 37 states. [2018-01-31 08:34:48,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:34:48,256 INFO L93 Difference]: Finished difference Result 425 states and 433 transitions. [2018-01-31 08:34:48,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-01-31 08:34:48,257 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 408 [2018-01-31 08:34:48,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:34:48,258 INFO L225 Difference]: With dead ends: 425 [2018-01-31 08:34:48,258 INFO L226 Difference]: Without dead ends: 290 [2018-01-31 08:34:48,259 INFO L554 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 [2018-01-31 08:34:48,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-01-31 08:34:48,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 285. [2018-01-31 08:34:48,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-01-31 08:34:48,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 289 transitions. [2018-01-31 08:34:48,263 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 289 transitions. Word has length 408 [2018-01-31 08:34:48,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:34:48,263 INFO L432 AbstractCegarLoop]: Abstraction has 285 states and 289 transitions. [2018-01-31 08:34:48,263 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-31 08:34:48,263 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 289 transitions. [2018-01-31 08:34:48,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-01-31 08:34:48,264 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:34:48,264 INFO L351 BasicCegarLoop]: trace histogram [24, 21, 21, 21, 21, 21, 21, 21, 18, 17, 17, 17, 17, 17, 17, 17, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:34:48,264 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolation]=== [2018-01-31 08:34:48,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1649446510, now seen corresponding path program 17 times [2018-01-31 08:34:48,265 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:34:48,265 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:34:48,265 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:48,265 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:34:48,265 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:48,278 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:34:49,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3048 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 1926 trivial. 0 not checked. [2018-01-31 08:34:49,015 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:34:49,015 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:34:49,019 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:34:49,029 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:49,045 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:49,051 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:49,061 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:49,064 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:49,066 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:49,068 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:49,071 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:49,078 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:49,084 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:49,091 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:49,102 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:49,120 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:49,208 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:49,269 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:49,609 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:49,611 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:34:49,615 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:34:49,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3048 backedges. 854 proven. 182 refuted. 0 times theorem prover too weak. 2012 trivial. 0 not checked. [2018-01-31 08:34:49,953 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:34:49,953 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 17] total 52 [2018-01-31 08:34:49,954 INFO L409 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-01-31 08:34:49,954 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-01-31 08:34:49,954 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=2213, Unknown=0, NotChecked=0, Total=2652 [2018-01-31 08:34:49,954 INFO L87 Difference]: Start difference. First operand 285 states and 289 transitions. Second operand 52 states. [2018-01-31 08:34:50,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:34:50,714 INFO L93 Difference]: Finished difference Result 446 states and 458 transitions. [2018-01-31 08:34:50,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-01-31 08:34:50,718 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 416 [2018-01-31 08:34:50,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:34:50,720 INFO L225 Difference]: With dead ends: 446 [2018-01-31 08:34:50,720 INFO L226 Difference]: Without dead ends: 311 [2018-01-31 08:34:50,722 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1937 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1935, Invalid=7965, Unknown=0, NotChecked=0, Total=9900 [2018-01-31 08:34:50,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-01-31 08:34:50,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 301. [2018-01-31 08:34:50,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-01-31 08:34:50,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 305 transitions. [2018-01-31 08:34:50,730 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 305 transitions. Word has length 416 [2018-01-31 08:34:50,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:34:50,730 INFO L432 AbstractCegarLoop]: Abstraction has 301 states and 305 transitions. [2018-01-31 08:34:50,730 INFO L433 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-01-31 08:34:50,730 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 305 transitions. [2018-01-31 08:34:50,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-01-31 08:34:50,732 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:34:50,732 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 24, 24, 24, 19, 18, 18, 18, 18, 18, 18, 18, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:34:50,732 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolation]=== [2018-01-31 08:34:50,732 INFO L82 PathProgramCache]: Analyzing trace with hash 279541252, now seen corresponding path program 18 times [2018-01-31 08:34:50,732 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:34:50,732 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:34:50,733 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:50,733 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:34:50,733 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:50,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:50,764 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:34:51,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3732 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 2472 trivial. 0 not checked. [2018-01-31 08:34:51,519 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:34:51,519 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:34:51,527 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:34:51,544 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:51,546 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:51,549 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:51,551 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:51,556 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:51,568 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:51,577 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:51,635 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:51,692 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:51,863 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:52,024 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:52,173 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:52,228 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:34:52,230 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:34:52,235 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:34:52,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3732 backedges. 1246 proven. 90 refuted. 0 times theorem prover too weak. 2396 trivial. 0 not checked. [2018-01-31 08:34:52,559 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:34:52,559 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 16] total 53 [2018-01-31 08:34:52,559 INFO L409 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-01-31 08:34:52,559 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-01-31 08:34:52,560 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=509, Invalid=2247, Unknown=0, NotChecked=0, Total=2756 [2018-01-31 08:34:52,560 INFO L87 Difference]: Start difference. First operand 301 states and 305 transitions. Second operand 53 states. [2018-01-31 08:34:53,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:34:53,619 INFO L93 Difference]: Finished difference Result 470 states and 479 transitions. [2018-01-31 08:34:53,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-01-31 08:34:53,620 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 448 [2018-01-31 08:34:53,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:34:53,621 INFO L225 Difference]: With dead ends: 470 [2018-01-31 08:34:53,621 INFO L226 Difference]: Without dead ends: 327 [2018-01-31 08:34:53,622 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2292 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2376, Invalid=9180, Unknown=0, NotChecked=0, Total=11556 [2018-01-31 08:34:53,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-01-31 08:34:53,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 317. [2018-01-31 08:34:53,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-01-31 08:34:53,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 321 transitions. [2018-01-31 08:34:53,625 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 321 transitions. Word has length 448 [2018-01-31 08:34:53,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:34:53,626 INFO L432 AbstractCegarLoop]: Abstraction has 317 states and 321 transitions. [2018-01-31 08:34:53,626 INFO L433 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-01-31 08:34:53,626 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 321 transitions. [2018-01-31 08:34:53,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2018-01-31 08:34:53,628 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:34:53,628 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 24, 24, 24, 20, 19, 19, 19, 19, 19, 19, 19, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:34:53,628 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr0AssertViolation]=== [2018-01-31 08:34:53,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1853480476, now seen corresponding path program 19 times [2018-01-31 08:34:53,628 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:34:53,628 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:34:53,629 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:53,629 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:34:53,629 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:53,643 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:34:54,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3920 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 2514 trivial. 0 not checked. [2018-01-31 08:34:54,668 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:34:54,668 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:34:54,673 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:34:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:54,734 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:34:55,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3920 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 2514 trivial. 0 not checked. [2018-01-31 08:34:55,022 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:34:55,022 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2018-01-31 08:34:55,023 INFO L409 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-01-31 08:34:55,023 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-01-31 08:34:55,023 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2018-01-31 08:34:55,023 INFO L87 Difference]: Start difference. First operand 317 states and 321 transitions. Second operand 43 states. [2018-01-31 08:34:55,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:34:55,508 INFO L93 Difference]: Finished difference Result 481 states and 489 transitions. [2018-01-31 08:34:55,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-01-31 08:34:55,509 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 464 [2018-01-31 08:34:55,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:34:55,509 INFO L225 Difference]: With dead ends: 481 [2018-01-31 08:34:55,509 INFO L226 Difference]: Without dead ends: 330 [2018-01-31 08:34:55,510 INFO L554 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 [2018-01-31 08:34:55,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2018-01-31 08:34:55,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 325. [2018-01-31 08:34:55,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-01-31 08:34:55,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 329 transitions. [2018-01-31 08:34:55,513 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 329 transitions. Word has length 464 [2018-01-31 08:34:55,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:34:55,514 INFO L432 AbstractCegarLoop]: Abstraction has 325 states and 329 transitions. [2018-01-31 08:34:55,514 INFO L433 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-01-31 08:34:55,514 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 329 transitions. [2018-01-31 08:34:55,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2018-01-31 08:34:55,515 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:34:55,515 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 24, 24, 24, 21, 20, 20, 20, 20, 20, 20, 20, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:34:55,516 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr0AssertViolation]=== [2018-01-31 08:34:55,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1293539763, now seen corresponding path program 20 times [2018-01-31 08:34:55,516 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:34:55,516 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:34:55,516 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:55,516 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:34:55,516 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:55,530 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:34:56,702 INFO L134 CoverageAnalysis]: Checked inductivity of 4074 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 2514 trivial. 0 not checked. [2018-01-31 08:34:56,703 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:34:56,703 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:34:56,708 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:34:56,721 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:56,748 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:56,754 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:34:56,756 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:34:56,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4074 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 2514 trivial. 0 not checked. [2018-01-31 08:34:56,982 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:34:56,982 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2018-01-31 08:34:56,983 INFO L409 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-01-31 08:34:56,983 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-01-31 08:34:56,983 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2018-01-31 08:34:56,983 INFO L87 Difference]: Start difference. First operand 325 states and 329 transitions. Second operand 45 states. [2018-01-31 08:34:57,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:34:57,978 INFO L93 Difference]: Finished difference Result 489 states and 497 transitions. [2018-01-31 08:34:57,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-01-31 08:34:57,982 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 472 [2018-01-31 08:34:57,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:34:57,983 INFO L225 Difference]: With dead ends: 489 [2018-01-31 08:34:57,983 INFO L226 Difference]: Without dead ends: 338 [2018-01-31 08:34:57,984 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2251, Invalid=4889, Unknown=0, NotChecked=0, Total=7140 [2018-01-31 08:34:57,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-01-31 08:34:57,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 333. [2018-01-31 08:34:57,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-01-31 08:34:57,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 337 transitions. [2018-01-31 08:34:57,987 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 337 transitions. Word has length 472 [2018-01-31 08:34:57,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:34:57,987 INFO L432 AbstractCegarLoop]: Abstraction has 333 states and 337 transitions. [2018-01-31 08:34:57,988 INFO L433 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-01-31 08:34:57,988 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 337 transitions. [2018-01-31 08:34:57,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2018-01-31 08:34:57,989 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:34:57,989 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 24, 24, 24, 22, 21, 21, 21, 21, 21, 21, 21, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:34:57,989 INFO L371 AbstractCegarLoop]: === Iteration 25 === [mainErr0AssertViolation]=== [2018-01-31 08:34:57,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1444131254, now seen corresponding path program 21 times [2018-01-31 08:34:57,990 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:34:57,990 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:34:57,990 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:57,990 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:34:57,990 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:58,006 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:34:58,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4236 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 2514 trivial. 0 not checked. [2018-01-31 08:34:58,850 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:34:58,850 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:34:58,855 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:34:58,868 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:58,872 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:58,877 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:58,886 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:58,897 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:58,920 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:58,945 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:59,053 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:59,054 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:34:59,057 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:34:59,351 INFO L134 CoverageAnalysis]: Checked inductivity of 4236 backedges. 1108 proven. 132 refuted. 0 times theorem prover too weak. 2996 trivial. 0 not checked. [2018-01-31 08:34:59,368 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:34:59,369 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 15] total 58 [2018-01-31 08:34:59,369 INFO L409 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-01-31 08:34:59,369 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-01-31 08:34:59,369 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=590, Invalid=2716, Unknown=0, NotChecked=0, Total=3306 [2018-01-31 08:34:59,370 INFO L87 Difference]: Start difference. First operand 333 states and 337 transitions. Second operand 58 states. [2018-01-31 08:35:00,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:35:00,370 INFO L93 Difference]: Finished difference Result 510 states and 519 transitions. [2018-01-31 08:35:00,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-01-31 08:35:00,377 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 480 [2018-01-31 08:35:00,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:35:00,378 INFO L225 Difference]: With dead ends: 510 [2018-01-31 08:35:00,378 INFO L226 Difference]: Without dead ends: 359 [2018-01-31 08:35:00,379 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2660, Invalid=9772, Unknown=0, NotChecked=0, Total=12432 [2018-01-31 08:35:00,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-01-31 08:35:00,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 349. [2018-01-31 08:35:00,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-01-31 08:35:00,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 353 transitions. [2018-01-31 08:35:00,383 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 353 transitions. Word has length 480 [2018-01-31 08:35:00,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:35:00,383 INFO L432 AbstractCegarLoop]: Abstraction has 349 states and 353 transitions. [2018-01-31 08:35:00,383 INFO L433 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-01-31 08:35:00,383 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 353 transitions. [2018-01-31 08:35:00,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2018-01-31 08:35:00,384 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:35:00,385 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 24, 24, 24, 23, 22, 22, 22, 22, 22, 22, 22, 8, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:35:00,385 INFO L371 AbstractCegarLoop]: === Iteration 26 === [mainErr0AssertViolation]=== [2018-01-31 08:35:00,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1919068054, now seen corresponding path program 22 times [2018-01-31 08:35:00,385 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:35:00,385 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:35:00,385 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:35:00,385 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:35:00,386 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:35:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:35:00,423 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:35:01,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4456 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 2564 trivial. 0 not checked. [2018-01-31 08:35:01,418 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:35:01,419 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:35:01,423 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:35:01,758 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:35:01,763 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:35:01,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4456 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 2564 trivial. 0 not checked. [2018-01-31 08:35:01,901 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:35:01,901 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2018-01-31 08:35:01,901 INFO L409 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-01-31 08:35:01,901 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-01-31 08:35:01,902 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2018-01-31 08:35:01,902 INFO L87 Difference]: Start difference. First operand 349 states and 353 transitions. Second operand 49 states. [2018-01-31 08:35:02,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:35:02,599 INFO L93 Difference]: Finished difference Result 521 states and 529 transitions. [2018-01-31 08:35:02,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-01-31 08:35:02,600 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 496 [2018-01-31 08:35:02,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:35:02,601 INFO L225 Difference]: With dead ends: 521 [2018-01-31 08:35:02,601 INFO L226 Difference]: Without dead ends: 362 [2018-01-31 08:35:02,602 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1616 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2695, Invalid=5861, Unknown=0, NotChecked=0, Total=8556 [2018-01-31 08:35:02,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2018-01-31 08:35:02,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 357. [2018-01-31 08:35:02,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-01-31 08:35:02,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 361 transitions. [2018-01-31 08:35:02,605 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 361 transitions. Word has length 496 [2018-01-31 08:35:02,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:35:02,605 INFO L432 AbstractCegarLoop]: Abstraction has 357 states and 361 transitions. [2018-01-31 08:35:02,605 INFO L433 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-01-31 08:35:02,606 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 361 transitions. [2018-01-31 08:35:02,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2018-01-31 08:35:02,607 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:35:02,607 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 8, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:35:02,607 INFO L371 AbstractCegarLoop]: === Iteration 27 === [mainErr0AssertViolation]=== [2018-01-31 08:35:02,608 INFO L82 PathProgramCache]: Analyzing trace with hash 271501311, now seen corresponding path program 23 times [2018-01-31 08:35:02,608 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:35:02,608 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:35:02,608 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:35:02,608 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:35:02,608 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:35:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:35:02,622 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:35:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4634 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 2564 trivial. 0 not checked. [2018-01-31 08:35:03,995 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:35:03,995 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) [2018-01-31 08:35:03,999 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:35:04,011 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:04,021 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:04,035 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:04,048 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:04,058 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:04,068 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:04,076 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:04,079 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:04,083 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:04,087 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:04,094 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:04,098 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:04,107 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:04,113 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:04,125 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:04,134 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:04,164 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:04,448 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:04,617 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:04,909 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:05,604 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:06,158 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:06,161 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:35:06,168 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:35:06,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4634 backedges. 1102 proven. 240 refuted. 0 times theorem prover too weak. 3292 trivial. 0 not checked. [2018-01-31 08:35:06,511 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:35:06,511 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 19] total 66 [2018-01-31 08:35:06,512 INFO L409 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-01-31 08:35:06,512 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-01-31 08:35:06,512 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=722, Invalid=3568, Unknown=0, NotChecked=0, Total=4290 [2018-01-31 08:35:06,512 INFO L87 Difference]: Start difference. First operand 357 states and 361 transitions. Second operand 66 states. [2018-01-31 08:35:07,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:35:07,800 INFO L93 Difference]: Finished difference Result 542 states and 554 transitions. [2018-01-31 08:35:07,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-01-31 08:35:07,801 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 504 [2018-01-31 08:35:07,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:35:07,802 INFO L225 Difference]: With dead ends: 542 [2018-01-31 08:35:07,802 INFO L226 Difference]: Without dead ends: 383 [2018-01-31 08:35:07,809 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3218 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3280, Invalid=12976, Unknown=0, NotChecked=0, Total=16256 [2018-01-31 08:35:07,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-01-31 08:35:07,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 373. [2018-01-31 08:35:07,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-01-31 08:35:07,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 377 transitions. [2018-01-31 08:35:07,817 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 377 transitions. Word has length 504 [2018-01-31 08:35:07,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:35:07,818 INFO L432 AbstractCegarLoop]: Abstraction has 373 states and 377 transitions. [2018-01-31 08:35:07,818 INFO L433 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-01-31 08:35:07,818 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 377 transitions. [2018-01-31 08:35:07,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2018-01-31 08:35:07,820 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:35:07,820 INFO L351 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 27, 25, 24, 24, 24, 24, 24, 24, 24, 8, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:35:07,820 INFO L371 AbstractCegarLoop]: === Iteration 28 === [mainErr0AssertViolation]=== [2018-01-31 08:35:07,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1837350513, now seen corresponding path program 24 times [2018-01-31 08:35:07,820 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:35:07,820 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:35:07,825 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:35:07,825 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:35:07,825 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:35:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:35:07,855 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:35:09,059 INFO L134 CoverageAnalysis]: Checked inductivity of 5438 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 3182 trivial. 0 not checked. [2018-01-31 08:35:09,060 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:35:09,060 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:35:09,064 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:35:09,078 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:09,080 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:09,084 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:09,086 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:09,092 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:09,111 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:09,129 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:09,240 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:09,304 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:09,406 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:09,458 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:09,547 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:09,621 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:09,657 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:09,702 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:09,878 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:10,313 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:10,316 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:35:10,321 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:35:10,609 INFO L134 CoverageAnalysis]: Checked inductivity of 5438 backedges. 1388 proven. 182 refuted. 0 times theorem prover too weak. 3868 trivial. 0 not checked. [2018-01-31 08:35:10,628 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:35:10,628 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 17] total 66 [2018-01-31 08:35:10,628 INFO L409 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-01-31 08:35:10,629 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-01-31 08:35:10,629 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=754, Invalid=3536, Unknown=0, NotChecked=0, Total=4290 [2018-01-31 08:35:10,629 INFO L87 Difference]: Start difference. First operand 373 states and 377 transitions. Second operand 66 states. [2018-01-31 08:35:13,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:35:13,533 INFO L93 Difference]: Finished difference Result 566 states and 575 transitions. [2018-01-31 08:35:13,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-01-31 08:35:13,533 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 536 [2018-01-31 08:35:13,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:35:13,534 INFO L225 Difference]: With dead ends: 566 [2018-01-31 08:35:13,534 INFO L226 Difference]: Without dead ends: 399 [2018-01-31 08:35:13,535 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3190 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3440, Invalid=12816, Unknown=0, NotChecked=0, Total=16256 [2018-01-31 08:35:13,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-01-31 08:35:13,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 389. [2018-01-31 08:35:13,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-01-31 08:35:13,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 393 transitions. [2018-01-31 08:35:13,539 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 393 transitions. Word has length 536 [2018-01-31 08:35:13,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:35:13,539 INFO L432 AbstractCegarLoop]: Abstraction has 389 states and 393 transitions. [2018-01-31 08:35:13,539 INFO L433 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-01-31 08:35:13,539 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 393 transitions. [2018-01-31 08:35:13,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2018-01-31 08:35:13,541 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:35:13,541 INFO L351 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 27, 26, 25, 25, 25, 25, 25, 25, 25, 9, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:35:13,541 INFO L371 AbstractCegarLoop]: === Iteration 29 === [mainErr0AssertViolation]=== [2018-01-31 08:35:13,542 INFO L82 PathProgramCache]: Analyzing trace with hash -951399343, now seen corresponding path program 25 times [2018-01-31 08:35:13,542 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:35:13,542 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:35:13,542 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:35:13,542 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:35:13,542 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:35:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:35:13,558 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:35:14,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5690 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 3240 trivial. 0 not checked. [2018-01-31 08:35:14,748 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:35:14,748 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:35:14,754 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:35:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:35:14,807 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:35:14,915 INFO L134 CoverageAnalysis]: Checked inductivity of 5690 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 3240 trivial. 0 not checked. [2018-01-31 08:35:14,933 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:35:14,933 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 55 [2018-01-31 08:35:14,933 INFO L409 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-01-31 08:35:14,933 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-01-31 08:35:14,934 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=2187, Unknown=0, NotChecked=0, Total=2970 [2018-01-31 08:35:14,934 INFO L87 Difference]: Start difference. First operand 389 states and 393 transitions. Second operand 55 states. [2018-01-31 08:35:15,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:35:15,684 INFO L93 Difference]: Finished difference Result 577 states and 585 transitions. [2018-01-31 08:35:15,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-01-31 08:35:15,685 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 552 [2018-01-31 08:35:15,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:35:15,686 INFO L225 Difference]: With dead ends: 577 [2018-01-31 08:35:15,686 INFO L226 Difference]: Without dead ends: 402 [2018-01-31 08:35:15,687 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2063 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=3436, Invalid=7484, Unknown=0, NotChecked=0, Total=10920 [2018-01-31 08:35:15,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2018-01-31 08:35:15,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 397. [2018-01-31 08:35:15,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-01-31 08:35:15,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 401 transitions. [2018-01-31 08:35:15,690 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 401 transitions. Word has length 552 [2018-01-31 08:35:15,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:35:15,690 INFO L432 AbstractCegarLoop]: Abstraction has 397 states and 401 transitions. [2018-01-31 08:35:15,690 INFO L433 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-01-31 08:35:15,690 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 401 transitions. [2018-01-31 08:35:15,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2018-01-31 08:35:15,692 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:35:15,693 INFO L351 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 9, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:35:15,693 INFO L371 AbstractCegarLoop]: === Iteration 30 === [mainErr0AssertViolation]=== [2018-01-31 08:35:15,693 INFO L82 PathProgramCache]: Analyzing trace with hash 2079235514, now seen corresponding path program 26 times [2018-01-31 08:35:15,693 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:35:15,693 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:35:15,693 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:35:15,693 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:35:15,694 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:35:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:35:15,708 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:35:17,120 INFO L134 CoverageAnalysis]: Checked inductivity of 5892 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 3240 trivial. 0 not checked. [2018-01-31 08:35:17,120 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:35:17,120 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:35:17,126 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:35:17,138 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:17,181 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:17,187 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:35:17,190 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:35:17,301 INFO L134 CoverageAnalysis]: Checked inductivity of 5892 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 3240 trivial. 0 not checked. [2018-01-31 08:35:17,318 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:35:17,318 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 57 [2018-01-31 08:35:17,319 INFO L409 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-01-31 08:35:17,319 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-01-31 08:35:17,319 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=840, Invalid=2352, Unknown=0, NotChecked=0, Total=3192 [2018-01-31 08:35:17,319 INFO L87 Difference]: Start difference. First operand 397 states and 401 transitions. Second operand 57 states. [2018-01-31 08:35:18,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:35:18,121 INFO L93 Difference]: Finished difference Result 585 states and 593 transitions. [2018-01-31 08:35:18,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-01-31 08:35:18,122 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 560 [2018-01-31 08:35:18,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:35:18,123 INFO L225 Difference]: With dead ends: 585 [2018-01-31 08:35:18,123 INFO L226 Difference]: Without dead ends: 410 [2018-01-31 08:35:18,124 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 559 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2224 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3703, Invalid=8069, Unknown=0, NotChecked=0, Total=11772 [2018-01-31 08:35:18,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2018-01-31 08:35:18,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 405. [2018-01-31 08:35:18,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2018-01-31 08:35:18,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 409 transitions. [2018-01-31 08:35:18,131 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 409 transitions. Word has length 560 [2018-01-31 08:35:18,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:35:18,131 INFO L432 AbstractCegarLoop]: Abstraction has 405 states and 409 transitions. [2018-01-31 08:35:18,131 INFO L433 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-01-31 08:35:18,131 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 409 transitions. [2018-01-31 08:35:18,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2018-01-31 08:35:18,133 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:35:18,133 INFO L351 BasicCegarLoop]: trace histogram [30, 28, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 9, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:35:18,134 INFO L371 AbstractCegarLoop]: === Iteration 31 === [mainErr0AssertViolation]=== [2018-01-31 08:35:18,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1941768669, now seen corresponding path program 27 times [2018-01-31 08:35:18,134 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:35:18,134 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:35:18,135 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:35:18,135 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:35:18,135 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:35:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:35:18,150 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:35:19,461 INFO L134 CoverageAnalysis]: Checked inductivity of 6102 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 3240 trivial. 0 not checked. [2018-01-31 08:35:19,462 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:35:19,462 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:35:19,468 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:35:19,483 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:35:19,487 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:35:19,492 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:35:19,503 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:35:19,515 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:35:19,528 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:35:19,551 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:35:19,574 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:35:19,597 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:35:19,623 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:35:19,624 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:35:19,628 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:35:20,045 INFO L134 CoverageAnalysis]: Checked inductivity of 6102 backedges. 1388 proven. 240 refuted. 0 times theorem prover too weak. 4474 trivial. 0 not checked. [2018-01-31 08:35:20,063 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:35:20,063 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 19] total 74 [2018-01-31 08:35:20,063 INFO L409 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-01-31 08:35:20,063 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-01-31 08:35:20,064 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=938, Invalid=4464, Unknown=0, NotChecked=0, Total=5402 [2018-01-31 08:35:20,064 INFO L87 Difference]: Start difference. First operand 405 states and 409 transitions. Second operand 74 states. [2018-01-31 08:35:21,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:35:21,501 INFO L93 Difference]: Finished difference Result 606 states and 615 transitions. [2018-01-31 08:35:21,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-01-31 08:35:21,501 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 568 [2018-01-31 08:35:21,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:35:21,503 INFO L225 Difference]: With dead ends: 606 [2018-01-31 08:35:21,503 INFO L226 Difference]: Without dead ends: 431 [2018-01-31 08:35:21,504 INFO L554 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 [2018-01-31 08:35:21,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-01-31 08:35:21,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 421. [2018-01-31 08:35:21,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-01-31 08:35:21,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 425 transitions. [2018-01-31 08:35:21,508 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 425 transitions. Word has length 568 [2018-01-31 08:35:21,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:35:21,508 INFO L432 AbstractCegarLoop]: Abstraction has 421 states and 425 transitions. [2018-01-31 08:35:21,508 INFO L433 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-01-31 08:35:21,508 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 425 transitions. [2018-01-31 08:35:21,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2018-01-31 08:35:21,510 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:35:21,510 INFO L351 BasicCegarLoop]: trace histogram [30, 29, 28, 28, 28, 28, 28, 28, 28, 27, 27, 27, 27, 27, 27, 27, 10, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:35:21,510 INFO L371 AbstractCegarLoop]: === Iteration 32 === [mainErr0AssertViolation]=== [2018-01-31 08:35:21,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1941156349, now seen corresponding path program 28 times [2018-01-31 08:35:21,511 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:35:21,511 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:35:21,511 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:35:21,511 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:35:21,511 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:35:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:35:21,526 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:35:22,937 INFO L134 CoverageAnalysis]: Checked inductivity of 6386 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2018-01-31 08:35:22,938 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:35:22,938 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:35:22,950 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:35:23,492 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:35:23,497 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:35:23,617 INFO L134 CoverageAnalysis]: Checked inductivity of 6386 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2018-01-31 08:35:23,635 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:35:23,636 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 61 [2018-01-31 08:35:23,636 INFO L409 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-01-31 08:35:23,636 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-01-31 08:35:23,636 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2018-01-31 08:35:23,636 INFO L87 Difference]: Start difference. First operand 421 states and 425 transitions. Second operand 61 states. [2018-01-31 08:35:24,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:35:24,519 INFO L93 Difference]: Finished difference Result 617 states and 625 transitions. [2018-01-31 08:35:24,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-01-31 08:35:24,519 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 584 [2018-01-31 08:35:24,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:35:24,520 INFO L225 Difference]: With dead ends: 617 [2018-01-31 08:35:24,520 INFO L226 Difference]: Without dead ends: 434 [2018-01-31 08:35:24,521 INFO L554 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 [2018-01-31 08:35:24,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-01-31 08:35:24,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 429. [2018-01-31 08:35:24,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2018-01-31 08:35:24,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 433 transitions. [2018-01-31 08:35:24,525 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 433 transitions. Word has length 584 [2018-01-31 08:35:24,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:35:24,525 INFO L432 AbstractCegarLoop]: Abstraction has 429 states and 433 transitions. [2018-01-31 08:35:24,525 INFO L433 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-01-31 08:35:24,525 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 433 transitions. [2018-01-31 08:35:24,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2018-01-31 08:35:24,527 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:35:24,528 INFO L351 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 29, 29, 27, 27, 27, 27, 27, 27, 27, 10, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:35:24,528 INFO L371 AbstractCegarLoop]: === Iteration 33 === [mainErr0AssertViolation]=== [2018-01-31 08:35:24,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1293403284, now seen corresponding path program 29 times [2018-01-31 08:35:24,528 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:35:24,528 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:35:24,528 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:35:24,528 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:35:24,529 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:35:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:35:24,544 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:35:26,032 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2018-01-31 08:35:26,032 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:35:26,032 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:35:26,038 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:35:26,053 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:26,054 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:26,055 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:26,056 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:26,058 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:26,060 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:26,062 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:26,064 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:26,067 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:26,070 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:26,073 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:26,079 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:26,086 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:26,102 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:26,110 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:26,119 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:26,140 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:26,162 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:26,186 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:26,199 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:26,240 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:26,700 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:26,952 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:27,358 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:28,076 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:29,917 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:34,094 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:41,940 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:41,945 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:35:41,957 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:35:42,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 1382 proven. 306 refuted. 0 times theorem prover too weak. 4924 trivial. 0 not checked. [2018-01-31 08:35:42,425 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:35:42,425 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 21] total 80 [2018-01-31 08:35:42,425 INFO L409 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-01-31 08:35:42,426 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-01-31 08:35:42,426 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1079, Invalid=5241, Unknown=0, NotChecked=0, Total=6320 [2018-01-31 08:35:42,426 INFO L87 Difference]: Start difference. First operand 429 states and 433 transitions. Second operand 80 states. [2018-01-31 08:35:44,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:35:44,213 INFO L93 Difference]: Finished difference Result 638 states and 650 transitions. [2018-01-31 08:35:44,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-01-31 08:35:44,213 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 592 [2018-01-31 08:35:44,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:35:44,214 INFO L225 Difference]: With dead ends: 638 [2018-01-31 08:35:44,214 INFO L226 Difference]: Without dead ends: 455 [2018-01-31 08:35:44,215 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 574 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4817 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4995, Invalid=19185, Unknown=0, NotChecked=0, Total=24180 [2018-01-31 08:35:44,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2018-01-31 08:35:44,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 445. [2018-01-31 08:35:44,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2018-01-31 08:35:44,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 449 transitions. [2018-01-31 08:35:44,219 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 449 transitions. Word has length 592 [2018-01-31 08:35:44,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:35:44,219 INFO L432 AbstractCegarLoop]: Abstraction has 445 states and 449 transitions. [2018-01-31 08:35:44,219 INFO L433 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-01-31 08:35:44,220 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 449 transitions. [2018-01-31 08:35:44,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2018-01-31 08:35:44,222 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:35:44,222 INFO L351 BasicCegarLoop]: trace histogram [33, 31, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 10, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:35:44,222 INFO L371 AbstractCegarLoop]: === Iteration 34 === [mainErr0AssertViolation]=== [2018-01-31 08:35:44,222 INFO L82 PathProgramCache]: Analyzing trace with hash -179428386, now seen corresponding path program 30 times [2018-01-31 08:35:44,222 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:35:44,222 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:35:44,223 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:35:44,223 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:35:44,223 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:35:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:35:44,238 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:35:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 7536 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 3996 trivial. 0 not checked. [2018-01-31 08:35:45,947 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:35:45,947 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:35:45,961 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:35:45,978 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:45,980 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:45,983 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:45,985 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:45,990 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:45,999 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:46,007 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:46,030 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:46,059 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:46,081 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:46,139 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:46,196 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:46,218 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:46,290 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:46,336 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:46,482 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:46,561 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:46,963 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:47,073 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:47,646 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:47,868 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:35:47,871 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:35:47,877 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:35:48,492 INFO L134 CoverageAnalysis]: Checked inductivity of 7536 backedges. 2090 proven. 306 refuted. 0 times theorem prover too weak. 5140 trivial. 0 not checked. [2018-01-31 08:35:48,511 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:35:48,511 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 27] total 88 [2018-01-31 08:35:48,512 INFO L409 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-01-31 08:35:48,512 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-01-31 08:35:48,512 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1248, Invalid=6408, Unknown=0, NotChecked=0, Total=7656 [2018-01-31 08:35:48,512 INFO L87 Difference]: Start difference. First operand 445 states and 449 transitions. Second operand 88 states. [2018-01-31 08:35:50,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:35:50,852 INFO L93 Difference]: Finished difference Result 662 states and 671 transitions. [2018-01-31 08:35:50,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-01-31 08:35:50,852 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 624 [2018-01-31 08:35:50,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:35:50,853 INFO L225 Difference]: With dead ends: 662 [2018-01-31 08:35:50,853 INFO L226 Difference]: Without dead ends: 471 [2018-01-31 08:35:50,856 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6728 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=6041, Invalid=26539, Unknown=0, NotChecked=0, Total=32580 [2018-01-31 08:35:50,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2018-01-31 08:35:50,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 461. [2018-01-31 08:35:50,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-01-31 08:35:50,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 465 transitions. [2018-01-31 08:35:50,860 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 465 transitions. Word has length 624 [2018-01-31 08:35:50,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:35:50,860 INFO L432 AbstractCegarLoop]: Abstraction has 461 states and 465 transitions. [2018-01-31 08:35:50,860 INFO L433 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-01-31 08:35:50,860 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 465 transitions. [2018-01-31 08:35:50,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2018-01-31 08:35:50,863 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:35:50,863 INFO L351 BasicCegarLoop]: trace histogram [33, 32, 31, 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:35:50,863 INFO L371 AbstractCegarLoop]: === Iteration 35 === [mainErr0AssertViolation]=== [2018-01-31 08:35:50,863 INFO L82 PathProgramCache]: Analyzing trace with hash -287206466, now seen corresponding path program 31 times [2018-01-31 08:35:50,863 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:35:50,863 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:35:50,864 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:35:50,864 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:35:50,864 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:35:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:35:50,882 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:35:52,766 INFO L134 CoverageAnalysis]: Checked inductivity of 7852 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-31 08:35:52,767 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:35:52,767 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:35:52,772 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:35:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:35:52,829 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:35:52,971 INFO L134 CoverageAnalysis]: Checked inductivity of 7852 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-31 08:35:52,988 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:35:52,988 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 67 [2018-01-31 08:35:52,988 INFO L409 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-01-31 08:35:52,988 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-01-31 08:35:52,989 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=3267, Unknown=0, NotChecked=0, Total=4422 [2018-01-31 08:35:52,989 INFO L87 Difference]: Start difference. First operand 461 states and 465 transitions. Second operand 67 states. [2018-01-31 08:35:54,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:35:54,115 INFO L93 Difference]: Finished difference Result 673 states and 681 transitions. [2018-01-31 08:35:54,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-01-31 08:35:54,116 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 640 [2018-01-31 08:35:54,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:35:54,118 INFO L225 Difference]: With dead ends: 673 [2018-01-31 08:35:54,118 INFO L226 Difference]: Without dead ends: 474 [2018-01-31 08:35:54,119 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3119 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=5188, Invalid=11324, Unknown=0, NotChecked=0, Total=16512 [2018-01-31 08:35:54,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2018-01-31 08:35:54,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 469. [2018-01-31 08:35:54,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2018-01-31 08:35:54,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 473 transitions. [2018-01-31 08:35:54,123 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 473 transitions. Word has length 640 [2018-01-31 08:35:54,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:35:54,123 INFO L432 AbstractCegarLoop]: Abstraction has 469 states and 473 transitions. [2018-01-31 08:35:54,123 INFO L433 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-01-31 08:35:54,123 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 473 transitions. [2018-01-31 08:35:54,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2018-01-31 08:35:54,126 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:35:54,126 INFO L351 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 32, 32, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:35:54,126 INFO L371 AbstractCegarLoop]: === Iteration 36 === [mainErr0AssertViolation]=== [2018-01-31 08:35:54,126 INFO L82 PathProgramCache]: Analyzing trace with hash -24497625, now seen corresponding path program 32 times [2018-01-31 08:35:54,126 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:35:54,126 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:35:54,127 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:35:54,127 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:35:54,127 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:35:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:35:54,143 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:35:55,972 INFO L134 CoverageAnalysis]: Checked inductivity of 8102 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-31 08:35:55,972 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:35:55,972 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:35:55,977 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:35:55,992 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:56,028 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:35:56,036 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:35:56,040 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:35:56,186 INFO L134 CoverageAnalysis]: Checked inductivity of 8102 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-31 08:35:56,203 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:35:56,203 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 69 [2018-01-31 08:35:56,203 INFO L409 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-01-31 08:35:56,204 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-01-31 08:35:56,204 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1224, Invalid=3468, Unknown=0, NotChecked=0, Total=4692 [2018-01-31 08:35:56,204 INFO L87 Difference]: Start difference. First operand 469 states and 473 transitions. Second operand 69 states. [2018-01-31 08:35:57,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:35:57,406 INFO L93 Difference]: Finished difference Result 681 states and 689 transitions. [2018-01-31 08:35:57,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-01-31 08:35:57,409 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 648 [2018-01-31 08:35:57,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:35:57,410 INFO L225 Difference]: With dead ends: 681 [2018-01-31 08:35:57,410 INFO L226 Difference]: Without dead ends: 482 [2018-01-31 08:35:57,411 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 778 GetRequests, 647 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3316 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=5515, Invalid=12041, Unknown=0, NotChecked=0, Total=17556 [2018-01-31 08:35:57,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2018-01-31 08:35:57,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 477. [2018-01-31 08:35:57,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2018-01-31 08:35:57,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 481 transitions. [2018-01-31 08:35:57,415 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 481 transitions. Word has length 648 [2018-01-31 08:35:57,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:35:57,415 INFO L432 AbstractCegarLoop]: Abstraction has 477 states and 481 transitions. [2018-01-31 08:35:57,416 INFO L433 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-01-31 08:35:57,416 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 481 transitions. [2018-01-31 08:35:57,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2018-01-31 08:35:57,420 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:35:57,420 INFO L351 BasicCegarLoop]: trace histogram [34, 33, 33, 33, 33, 33, 33, 33, 33, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:35:57,420 INFO L371 AbstractCegarLoop]: === Iteration 37 === [mainErr0AssertViolation]=== [2018-01-31 08:35:57,421 INFO L82 PathProgramCache]: Analyzing trace with hash -221882480, now seen corresponding path program 33 times [2018-01-31 08:35:57,421 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:35:57,421 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:35:57,421 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:35:57,421 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:35:57,421 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:35:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:35:57,438 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:35:59,396 INFO L134 CoverageAnalysis]: Checked inductivity of 8360 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-31 08:35:59,396 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:35:59,397 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:35:59,403 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:35:59,420 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:35:59,424 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:35:59,429 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:35:59,438 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:35:59,447 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:35:59,465 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:35:59,485 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:35:59,503 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:35:59,518 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:35:59,539 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:35:59,563 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:35:59,565 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:35:59,570 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:36:00,085 INFO L134 CoverageAnalysis]: Checked inductivity of 8360 backedges. 1690 proven. 380 refuted. 0 times theorem prover too weak. 6290 trivial. 0 not checked. [2018-01-31 08:36:00,103 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:36:00,103 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 23] total 90 [2018-01-31 08:36:00,104 INFO L409 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-01-31 08:36:00,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-01-31 08:36:00,104 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1366, Invalid=6644, Unknown=0, NotChecked=0, Total=8010 [2018-01-31 08:36:00,104 INFO L87 Difference]: Start difference. First operand 477 states and 481 transitions. Second operand 90 states. [2018-01-31 08:36:02,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:36:02,180 INFO L93 Difference]: Finished difference Result 702 states and 714 transitions. [2018-01-31 08:36:02,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-01-31 08:36:02,180 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 656 [2018-01-31 08:36:02,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:36:02,182 INFO L225 Difference]: With dead ends: 702 [2018-01-31 08:36:02,182 INFO L226 Difference]: Without dead ends: 503 [2018-01-31 08:36:02,184 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 636 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6166 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=6380, Invalid=24420, Unknown=0, NotChecked=0, Total=30800 [2018-01-31 08:36:02,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2018-01-31 08:36:02,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 493. [2018-01-31 08:36:02,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2018-01-31 08:36:02,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 497 transitions. [2018-01-31 08:36:02,191 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 497 transitions. Word has length 656 [2018-01-31 08:36:02,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:36:02,191 INFO L432 AbstractCegarLoop]: Abstraction has 493 states and 497 transitions. [2018-01-31 08:36:02,191 INFO L433 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-01-31 08:36:02,191 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 497 transitions. [2018-01-31 08:36:02,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2018-01-31 08:36:02,194 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:36:02,194 INFO L351 BasicCegarLoop]: trace histogram [36, 35, 34, 34, 34, 34, 34, 34, 34, 33, 33, 33, 33, 33, 33, 33, 11, 10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:36:02,194 INFO L371 AbstractCegarLoop]: === Iteration 38 === [mainErr0AssertViolation]=== [2018-01-31 08:36:02,195 INFO L82 PathProgramCache]: Analyzing trace with hash -2027079166, now seen corresponding path program 34 times [2018-01-31 08:36:02,195 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:36:02,195 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:36:02,196 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:36:02,196 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:36:02,196 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:36:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:36:02,215 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:36:04,292 INFO L134 CoverageAnalysis]: Checked inductivity of 9388 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 4832 trivial. 0 not checked. [2018-01-31 08:36:04,292 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:36:04,292 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:36:04,296 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:36:05,223 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:36:05,230 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:36:05,393 INFO L134 CoverageAnalysis]: Checked inductivity of 9388 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 4832 trivial. 0 not checked. [2018-01-31 08:36:05,412 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:36:05,413 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 73 [2018-01-31 08:36:05,413 INFO L409 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-01-31 08:36:05,413 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-01-31 08:36:05,414 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1368, Invalid=3888, Unknown=0, NotChecked=0, Total=5256 [2018-01-31 08:36:05,414 INFO L87 Difference]: Start difference. First operand 493 states and 497 transitions. Second operand 73 states. [2018-01-31 08:36:06,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:36:06,706 INFO L93 Difference]: Finished difference Result 713 states and 721 transitions. [2018-01-31 08:36:06,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-01-31 08:36:06,706 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 688 [2018-01-31 08:36:06,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:36:06,707 INFO L225 Difference]: With dead ends: 713 [2018-01-31 08:36:06,707 INFO L226 Difference]: Without dead ends: 506 [2018-01-31 08:36:06,708 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 687 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=6199, Invalid=13541, Unknown=0, NotChecked=0, Total=19740 [2018-01-31 08:36:06,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2018-01-31 08:36:06,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 501. [2018-01-31 08:36:06,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2018-01-31 08:36:06,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 505 transitions. [2018-01-31 08:36:06,712 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 505 transitions. Word has length 688 [2018-01-31 08:36:06,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:36:06,712 INFO L432 AbstractCegarLoop]: Abstraction has 501 states and 505 transitions. [2018-01-31 08:36:06,712 INFO L433 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-01-31 08:36:06,712 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 505 transitions. [2018-01-31 08:36:06,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2018-01-31 08:36:06,714 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:36:06,715 INFO L351 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 35, 35, 33, 33, 33, 33, 33, 33, 33, 11, 10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:36:06,715 INFO L371 AbstractCegarLoop]: === Iteration 39 === [mainErr0AssertViolation]=== [2018-01-31 08:36:06,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1666318955, now seen corresponding path program 35 times [2018-01-31 08:36:06,715 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:36:06,715 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:36:06,715 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:36:06,716 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:36:06,716 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:36:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:36:06,732 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:36:08,852 INFO L134 CoverageAnalysis]: Checked inductivity of 9662 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 4832 trivial. 0 not checked. [2018-01-31 08:36:08,853 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:36:08,853 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:36:08,858 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:36:08,872 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:08,873 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:08,875 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:08,876 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:08,877 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:08,879 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:08,881 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:08,884 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:08,888 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:08,892 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:08,896 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:08,902 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:08,910 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:08,922 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:08,928 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:08,941 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:08,958 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:08,978 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:08,990 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:09,007 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:09,031 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:09,048 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:09,067 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:09,088 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:09,125 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:09,182 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:10,142 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:11,177 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:13,744 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:17,689 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:25,110 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:34,752 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:46,770 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:58,790 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:36:58,794 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:36:58,814 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:36:59,417 INFO L134 CoverageAnalysis]: Checked inductivity of 9662 backedges. 2038 proven. 462 refuted. 0 times theorem prover too weak. 7162 trivial. 0 not checked. [2018-01-31 08:36:59,445 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:36:59,445 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 25] total 96 [2018-01-31 08:36:59,445 INFO L409 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-01-31 08:36:59,446 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-01-31 08:36:59,446 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1535, Invalid=7585, Unknown=0, NotChecked=0, Total=9120 [2018-01-31 08:36:59,446 INFO L87 Difference]: Start difference. First operand 501 states and 505 transitions. Second operand 96 states. [2018-01-31 08:37:01,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:37:01,758 INFO L93 Difference]: Finished difference Result 734 states and 746 transitions. [2018-01-31 08:37:01,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-01-31 08:37:01,759 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 696 [2018-01-31 08:37:01,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:37:01,760 INFO L225 Difference]: With dead ends: 734 [2018-01-31 08:37:01,760 INFO L226 Difference]: Without dead ends: 527 [2018-01-31 08:37:01,762 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 860 GetRequests, 674 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7073 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=7195, Invalid=27961, Unknown=0, NotChecked=0, Total=35156 [2018-01-31 08:37:01,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2018-01-31 08:37:01,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 517. [2018-01-31 08:37:01,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 517 states. [2018-01-31 08:37:01,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 521 transitions. [2018-01-31 08:37:01,766 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 521 transitions. Word has length 696 [2018-01-31 08:37:01,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:37:01,766 INFO L432 AbstractCegarLoop]: Abstraction has 517 states and 521 transitions. [2018-01-31 08:37:01,766 INFO L433 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-01-31 08:37:01,766 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 521 transitions. [2018-01-31 08:37:01,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2018-01-31 08:37:01,769 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:37:01,769 INFO L351 BasicCegarLoop]: trace histogram [39, 37, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 11, 10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:37:01,769 INFO L371 AbstractCegarLoop]: === Iteration 40 === [mainErr0AssertViolation]=== [2018-01-31 08:37:01,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1039276323, now seen corresponding path program 36 times [2018-01-31 08:37:01,770 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:37:01,770 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:37:01,770 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:37:01,770 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:37:01,770 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:37:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:37:01,789 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:37:04,360 INFO L134 CoverageAnalysis]: Checked inductivity of 10778 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 5666 trivial. 0 not checked. [2018-01-31 08:37:04,360 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:37:04,360 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:37:04,365 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:37:04,382 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:37:04,389 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:37:04,393 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command Received shutdown request... [2018-01-31 08:37:04,397 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:37:04,403 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:37:04,419 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:37:04,438 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:37:04,501 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:37:04,536 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:37:04,547 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:37:04,601 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:37:04,636 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:37:04,754 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:37:04,946 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:37:05,089 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:37:05,240 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:37:05,724 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:37:06,073 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:37:06,334 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:37:06,487 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:37:07,268 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:37:07,624 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:37:07,698 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:37:07,702 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:37:07,711 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:37:07,714 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-31 08:37:07,714 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-31 08:37:07,717 WARN L185 ceAbstractionStarter]: Timeout [2018-01-31 08:37:07,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 08:37:07 BoogieIcfgContainer [2018-01-31 08:37:07,718 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-31 08:37:07,718 INFO L168 Benchmark]: Toolchain (without parser) took 157642.91 ms. Allocated memory was 150.5 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 115.6 MB in the beginning and 672.8 MB in the end (delta: -557.2 MB). Peak memory consumption was 1.4 GB. Max. memory is 5.3 GB. [2018-01-31 08:37:07,719 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 150.5 MB. Free memory is still 120.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 08:37:07,719 INFO L168 Benchmark]: CACSL2BoogieTranslator took 112.75 ms. Allocated memory is still 150.5 MB. Free memory was 115.4 MB in the beginning and 106.8 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 5.3 GB. [2018-01-31 08:37:07,719 INFO L168 Benchmark]: Boogie Preprocessor took 19.39 ms. Allocated memory is still 150.5 MB. Free memory was 106.8 MB in the beginning and 105.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 5.3 GB. [2018-01-31 08:37:07,719 INFO L168 Benchmark]: RCFGBuilder took 400.23 ms. Allocated memory is still 150.5 MB. Free memory was 105.0 MB in the beginning and 86.7 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 5.3 GB. [2018-01-31 08:37:07,719 INFO L168 Benchmark]: TraceAbstraction took 157108.32 ms. Allocated memory was 150.5 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 86.4 MB in the beginning and 672.8 MB in the end (delta: -586.3 MB). Peak memory consumption was 1.4 GB. Max. memory is 5.3 GB. [2018-01-31 08:37:07,720 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 150.5 MB. Free memory is still 120.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 112.75 ms. Allocated memory is still 150.5 MB. Free memory was 115.4 MB in the beginning and 106.8 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 19.39 ms. Allocated memory is still 150.5 MB. Free memory was 106.8 MB in the beginning and 105.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 5.3 GB. * RCFGBuilder took 400.23 ms. Allocated memory is still 150.5 MB. Free memory was 105.0 MB in the beginning and 86.7 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 157108.32 ms. Allocated memory was 150.5 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 86.4 MB in the beginning and 672.8 MB in the end (delta: -586.3 MB). Peak memory consumption was 1.4 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 39]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 39). Cancelled while BasicCegarLoop was analyzing trace of length 729 with TraceHistMax 39, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 1 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 78 locations, 1 error locations. TIMEOUT Result, 157.0s OverallTime, 40 OverallIterations, 39 TraceHistogramMax, 31.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2687 SDtfs, 4767 SDslu, 72893 SDs, 0 SdLazy, 9952 SolverSat, 1126 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18119 GetRequests, 15030 SyntacticMatches, 0 SemanticMatches, 3089 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70463 ImplicationChecksByTransitivity, 46.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=517occurred in iteration=39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 39 MinimizatonAttempts, 290 StatesRemovedByMinimization, 38 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 76.5s SatisfiabilityAnalysisTime, 39.0s InterpolantComputationTime, 30683 NumberOfCodeBlocks, 29129 NumberOfCodeBlocksAsserted, 299 NumberOfCheckSat, 30607 ConstructedInterpolants, 0 QuantifiedInterpolants, 23655971 SizeOfPredicates, 893 NumberOfNonLiveVariables, 21130 ConjunctsInSsa, 976 ConjunctsInUnsatCore, 76 InterpolantComputations, 4 PerfectInterpolantSequences, 181809/271933 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/avg60_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-31_08-37-07-724.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/avg60_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-31_08-37-07-724.csv Completed graceful shutdown