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/max40_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-5f7ec6e-m [2018-01-31 08:48:09,040 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 08:48:09,041 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 08:48:09,051 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 08:48:09,051 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 08:48:09,051 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 08:48:09,052 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 08:48:09,053 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 08:48:09,054 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 08:48:09,055 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 08:48:09,055 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 08:48:09,055 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 08:48:09,056 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 08:48:09,056 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 08:48:09,057 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 08:48:09,058 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 08:48:09,059 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 08:48:09,060 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 08:48:09,060 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 08:48:09,061 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 08:48:09,062 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-31 08:48:09,062 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-31 08:48:09,062 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-31 08:48:09,063 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-31 08:48:09,063 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-31 08:48:09,064 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-31 08:48:09,064 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-31 08:48:09,064 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-31 08:48:09,065 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-31 08:48:09,065 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 08:48:09,065 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 08:48:09,065 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 08:48:09,070 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 08:48:09,070 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 08:48:09,071 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 08:48:09,071 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 08:48:09,071 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 08:48:09,071 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 08:48:09,071 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 08:48:09,071 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 08:48:09,071 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 08:48:09,072 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 08:48:09,072 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 08:48:09,072 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 08:48:09,072 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-31 08:48:09,072 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 08:48:09,072 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-31 08:48:09,072 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 08:48:09,072 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-31 08:48:09,072 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-31 08:48:09,072 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 08:48:09,072 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 08:48:09,073 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 08:48:09,073 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 08:48:09,073 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 08:48:09,073 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 08:48:09,073 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 08:48:09,073 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 08:48:09,073 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 08:48:09,073 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 08:48:09,073 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 08:48:09,073 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 08:48:09,073 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 08:48:09,073 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 08:48:09,074 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 08:48:09,074 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 08:48:09,092 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 08:48:09,098 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 08:48:09,100 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 08:48:09,101 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 08:48:09,101 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 08:48:09,102 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max40_true-unreach-call.i [2018-01-31 08:48:09,164 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 08:48:09,165 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-31 08:48:09,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 08:48:09,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 08:48:09,169 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 08:48:09,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:48:09" (1/1) ... [2018-01-31 08:48:09,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55d7431b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:48:09, skipping insertion in model container [2018-01-31 08:48:09,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:48:09" (1/1) ... [2018-01-31 08:48:09,180 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 08:48:09,189 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 08:48:09,272 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 08:48:09,287 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 08:48:09,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:48:09 WrapperNode [2018-01-31 08:48:09,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 08:48:09,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 08:48:09,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 08:48:09,293 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 08:48:09,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:48:09" (1/1) ... [2018-01-31 08:48:09,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:48:09" (1/1) ... [2018-01-31 08:48:09,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:48:09" (1/1) ... [2018-01-31 08:48:09,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:48:09" (1/1) ... [2018-01-31 08:48:09,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:48:09" (1/1) ... [2018-01-31 08:48:09,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:48:09" (1/1) ... [2018-01-31 08:48:09,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:48:09" (1/1) ... [2018-01-31 08:48:09,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 08:48:09,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 08:48:09,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 08:48:09,316 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 08:48:09,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:48:09" (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 08:48:09,357 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 08:48:09,357 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 08:48:09,357 INFO L136 BoogieDeclarations]: Found implementation of procedure max [2018-01-31 08:48:09,357 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 08:48:09,357 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 08:48:09,357 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 08:48:09,358 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 08:48:09,358 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 08:48:09,358 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 08:48:09,358 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-31 08:48:09,358 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 08:48:09,358 INFO L128 BoogieDeclarations]: Found specification of procedure max [2018-01-31 08:48:09,358 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 08:48:09,358 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 08:48:09,358 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 08:48:09,748 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 08:48:09,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:48:09 BoogieIcfgContainer [2018-01-31 08:48:09,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 08:48:09,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 08:48:09,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 08:48:09,751 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 08:48:09,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 08:48:09" (1/3) ... [2018-01-31 08:48:09,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174060fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:48:09, skipping insertion in model container [2018-01-31 08:48:09,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:48:09" (2/3) ... [2018-01-31 08:48:09,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174060fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:48:09, skipping insertion in model container [2018-01-31 08:48:09,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:48:09" (3/3) ... [2018-01-31 08:48:09,753 INFO L107 eAbstractionObserver]: Analyzing ICFG max40_true-unreach-call.i [2018-01-31 08:48:09,758 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 08:48:09,762 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-31 08:48:09,788 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 08:48:09,788 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 08:48:09,788 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 08:48:09,788 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 08:48:09,788 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 08:48:09,788 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 08:48:09,788 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 08:48:09,788 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 08:48:09,789 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 08:48:09,798 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2018-01-31 08:48:09,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-01-31 08:48:09,803 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:09,803 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 08:48:09,804 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolation]=== [2018-01-31 08:48:09,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1575417866, now seen corresponding path program 1 times [2018-01-31 08:48:09,807 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:09,808 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:09,836 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:09,836 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:48:09,836 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:09,865 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:09,917 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 08:48:09,919 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:48:09,919 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 08:48:09,920 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-31 08:48:09,927 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-31 08:48:09,928 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 08:48:09,929 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 2 states. [2018-01-31 08:48:09,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:09,946 INFO L93 Difference]: Finished difference Result 148 states and 167 transitions. [2018-01-31 08:48:09,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-31 08:48:09,947 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 67 [2018-01-31 08:48:09,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:09,952 INFO L225 Difference]: With dead ends: 148 [2018-01-31 08:48:09,952 INFO L226 Difference]: Without dead ends: 77 [2018-01-31 08:48:09,954 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 08:48:09,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-01-31 08:48:09,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-01-31 08:48:09,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-01-31 08:48:09,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2018-01-31 08:48:10,032 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 67 [2018-01-31 08:48:10,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:10,033 INFO L432 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2018-01-31 08:48:10,033 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-31 08:48:10,033 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2018-01-31 08:48:10,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-01-31 08:48:10,035 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:10,035 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 08:48:10,035 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolation]=== [2018-01-31 08:48:10,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1931623505, now seen corresponding path program 1 times [2018-01-31 08:48:10,035 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:10,035 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:10,036 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:10,036 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:48:10,036 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:10,055 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:10,133 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 08:48:10,133 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:48:10,134 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 08:48:10,136 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 08:48:10,136 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 08:48:10,136 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 08:48:10,137 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 3 states. [2018-01-31 08:48:10,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:10,191 INFO L93 Difference]: Finished difference Result 141 states and 151 transitions. [2018-01-31 08:48:10,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 08:48:10,192 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2018-01-31 08:48:10,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:10,193 INFO L225 Difference]: With dead ends: 141 [2018-01-31 08:48:10,193 INFO L226 Difference]: Without dead ends: 84 [2018-01-31 08:48:10,194 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 08:48:10,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-01-31 08:48:10,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 79. [2018-01-31 08:48:10,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-01-31 08:48:10,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2018-01-31 08:48:10,199 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 72 [2018-01-31 08:48:10,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:10,199 INFO L432 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2018-01-31 08:48:10,199 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 08:48:10,199 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2018-01-31 08:48:10,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-01-31 08:48:10,200 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:10,200 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 08:48:10,200 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolation]=== [2018-01-31 08:48:10,200 INFO L82 PathProgramCache]: Analyzing trace with hash -636470726, now seen corresponding path program 1 times [2018-01-31 08:48:10,201 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:10,201 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:10,201 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:10,201 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:48:10,201 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:10,210 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:10,274 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 08:48:10,274 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:10,274 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 08:48:10,292 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:48:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:10,327 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:10,403 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 08:48:10,420 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:48:10,420 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 08:48:10,420 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 08:48:10,420 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 08:48:10,420 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 08:48:10,420 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 6 states. [2018-01-31 08:48:10,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:10,633 INFO L93 Difference]: Finished difference Result 162 states and 177 transitions. [2018-01-31 08:48:10,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 08:48:10,633 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2018-01-31 08:48:10,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:10,634 INFO L225 Difference]: With dead ends: 162 [2018-01-31 08:48:10,634 INFO L226 Difference]: Without dead ends: 105 [2018-01-31 08:48:10,634 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-31 08:48:10,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-01-31 08:48:10,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 89. [2018-01-31 08:48:10,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-01-31 08:48:10,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2018-01-31 08:48:10,639 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 80 [2018-01-31 08:48:10,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:10,639 INFO L432 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2018-01-31 08:48:10,639 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 08:48:10,639 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2018-01-31 08:48:10,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-01-31 08:48:10,641 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:10,641 INFO L351 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 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 08:48:10,641 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolation]=== [2018-01-31 08:48:10,641 INFO L82 PathProgramCache]: Analyzing trace with hash 91073205, now seen corresponding path program 1 times [2018-01-31 08:48:10,641 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:10,641 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:10,642 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:10,642 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:48:10,642 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:10,653 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:10,713 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-01-31 08:48:10,713 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:10,713 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:48:10,727 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:48:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:10,763 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:10,806 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-01-31 08:48:10,823 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:48:10,823 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 08:48:10,824 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 08:48:10,824 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 08:48:10,824 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 08:48:10,825 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand 6 states. [2018-01-31 08:48:10,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:10,970 INFO L93 Difference]: Finished difference Result 179 states and 194 transitions. [2018-01-31 08:48:10,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 08:48:10,970 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-01-31 08:48:10,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:10,971 INFO L225 Difference]: With dead ends: 179 [2018-01-31 08:48:10,971 INFO L226 Difference]: Without dead ends: 121 [2018-01-31 08:48:10,971 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-31 08:48:10,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-01-31 08:48:10,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 105. [2018-01-31 08:48:10,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-01-31 08:48:10,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 111 transitions. [2018-01-31 08:48:10,976 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 111 transitions. Word has length 124 [2018-01-31 08:48:10,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:10,977 INFO L432 AbstractCegarLoop]: Abstraction has 105 states and 111 transitions. [2018-01-31 08:48:10,977 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 08:48:10,977 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 111 transitions. [2018-01-31 08:48:10,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-01-31 08:48:10,980 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:10,980 INFO L351 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 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 08:48:10,980 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolation]=== [2018-01-31 08:48:10,980 INFO L82 PathProgramCache]: Analyzing trace with hash -116200898, now seen corresponding path program 1 times [2018-01-31 08:48:10,980 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:10,980 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:10,981 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:10,981 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:48:10,981 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:11,000 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:11,166 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2018-01-31 08:48:11,166 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:11,166 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-01-31 08:48:11,178 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:48:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:11,214 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:11,379 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-01-31 08:48:11,395 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:48:11,395 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2018-01-31 08:48:11,396 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-31 08:48:11,396 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-31 08:48:11,396 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-31 08:48:11,396 INFO L87 Difference]: Start difference. First operand 105 states and 111 transitions. Second operand 10 states. [2018-01-31 08:48:11,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:11,668 INFO L93 Difference]: Finished difference Result 206 states and 219 transitions. [2018-01-31 08:48:11,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-31 08:48:11,670 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 168 [2018-01-31 08:48:11,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:11,671 INFO L225 Difference]: With dead ends: 206 [2018-01-31 08:48:11,671 INFO L226 Difference]: Without dead ends: 131 [2018-01-31 08:48:11,671 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 164 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 08:48:11,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-01-31 08:48:11,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 121. [2018-01-31 08:48:11,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-01-31 08:48:11,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 127 transitions. [2018-01-31 08:48:11,677 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 127 transitions. Word has length 168 [2018-01-31 08:48:11,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:11,677 INFO L432 AbstractCegarLoop]: Abstraction has 121 states and 127 transitions. [2018-01-31 08:48:11,677 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-31 08:48:11,677 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 127 transitions. [2018-01-31 08:48:11,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-01-31 08:48:11,679 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:11,679 INFO L351 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 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 08:48:11,679 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolation]=== [2018-01-31 08:48:11,679 INFO L82 PathProgramCache]: Analyzing trace with hash -748089058, now seen corresponding path program 2 times [2018-01-31 08:48:11,679 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:11,679 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:11,680 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:11,680 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:48:11,680 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:11,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:11,700 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:11,826 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2018-01-31 08:48:11,826 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:11,826 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 08:48:11,831 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:48:11,841 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:11,862 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:11,874 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:48:11,877 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:12,168 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2018-01-31 08:48:12,185 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:48:12,185 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2018-01-31 08:48:12,185 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-31 08:48:12,185 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-31 08:48:12,185 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-01-31 08:48:12,186 INFO L87 Difference]: Start difference. First operand 121 states and 127 transitions. Second operand 14 states. [2018-01-31 08:48:12,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:12,371 INFO L93 Difference]: Finished difference Result 242 states and 260 transitions. [2018-01-31 08:48:12,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-31 08:48:12,371 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 184 [2018-01-31 08:48:12,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:12,372 INFO L225 Difference]: With dead ends: 242 [2018-01-31 08:48:12,372 INFO L226 Difference]: Without dead ends: 159 [2018-01-31 08:48:12,373 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2018-01-31 08:48:12,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-01-31 08:48:12,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 143. [2018-01-31 08:48:12,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-01-31 08:48:12,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 150 transitions. [2018-01-31 08:48:12,378 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 150 transitions. Word has length 184 [2018-01-31 08:48:12,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:12,378 INFO L432 AbstractCegarLoop]: Abstraction has 143 states and 150 transitions. [2018-01-31 08:48:12,378 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-31 08:48:12,378 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 150 transitions. [2018-01-31 08:48:12,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-01-31 08:48:12,380 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:12,380 INFO L351 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 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 08:48:12,380 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolation]=== [2018-01-31 08:48:12,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1418241177, now seen corresponding path program 3 times [2018-01-31 08:48:12,381 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:12,381 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:12,381 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:12,381 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:48:12,381 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:12,397 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:12,546 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 572 trivial. 0 not checked. [2018-01-31 08:48:12,546 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:12,546 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 08:48:12,551 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:48:12,565 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:12,569 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:12,576 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:12,586 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:12,589 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:48:12,592 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:12,630 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 260 proven. 12 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-01-31 08:48:12,647 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:48:12,647 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-01-31 08:48:12,647 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 08:48:12,647 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 08:48:12,648 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-31 08:48:12,648 INFO L87 Difference]: Start difference. First operand 143 states and 150 transitions. Second operand 9 states. [2018-01-31 08:48:12,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:12,687 INFO L93 Difference]: Finished difference Result 216 states and 227 transitions. [2018-01-31 08:48:12,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-31 08:48:12,687 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 228 [2018-01-31 08:48:12,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:12,688 INFO L225 Difference]: With dead ends: 216 [2018-01-31 08:48:12,688 INFO L226 Difference]: Without dead ends: 156 [2018-01-31 08:48:12,688 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 227 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 08:48:12,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-01-31 08:48:12,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 151. [2018-01-31 08:48:12,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-01-31 08:48:12,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 158 transitions. [2018-01-31 08:48:12,692 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 158 transitions. Word has length 228 [2018-01-31 08:48:12,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:12,694 INFO L432 AbstractCegarLoop]: Abstraction has 151 states and 158 transitions. [2018-01-31 08:48:12,694 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 08:48:12,694 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 158 transitions. [2018-01-31 08:48:12,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-01-31 08:48:12,696 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:12,696 INFO L351 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 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 08:48:12,696 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolation]=== [2018-01-31 08:48:12,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1712087280, now seen corresponding path program 4 times [2018-01-31 08:48:12,696 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:12,696 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:12,697 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:12,697 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:48:12,697 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:12,710 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2018-01-31 08:48:12,903 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:12,903 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 08:48:12,907 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:48:12,957 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:48:12,960 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:13,034 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2018-01-31 08:48:13,051 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:48:13,051 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2018-01-31 08:48:13,051 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-31 08:48:13,052 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-31 08:48:13,052 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-31 08:48:13,052 INFO L87 Difference]: Start difference. First operand 151 states and 158 transitions. Second operand 13 states. [2018-01-31 08:48:13,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:13,174 INFO L93 Difference]: Finished difference Result 269 states and 283 transitions. [2018-01-31 08:48:13,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-31 08:48:13,184 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 236 [2018-01-31 08:48:13,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:13,188 INFO L225 Difference]: With dead ends: 269 [2018-01-31 08:48:13,188 INFO L226 Difference]: Without dead ends: 164 [2018-01-31 08:48:13,188 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2018-01-31 08:48:13,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-01-31 08:48:13,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 159. [2018-01-31 08:48:13,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-01-31 08:48:13,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 166 transitions. [2018-01-31 08:48:13,192 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 166 transitions. Word has length 236 [2018-01-31 08:48:13,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:13,192 INFO L432 AbstractCegarLoop]: Abstraction has 159 states and 166 transitions. [2018-01-31 08:48:13,192 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-31 08:48:13,192 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 166 transitions. [2018-01-31 08:48:13,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-01-31 08:48:13,198 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:13,199 INFO L351 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 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 08:48:13,199 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolation]=== [2018-01-31 08:48:13,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1968763783, now seen corresponding path program 5 times [2018-01-31 08:48:13,199 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:13,199 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:13,199 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:13,199 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:48:13,200 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:13,213 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:13,337 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2018-01-31 08:48:13,338 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:13,338 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 08:48:13,342 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:48:13,351 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:13,354 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:13,359 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:13,375 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:13,381 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:48:13,383 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:13,480 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 254 proven. 42 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2018-01-31 08:48:13,498 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:48:13,498 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2018-01-31 08:48:13,499 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-31 08:48:13,499 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-31 08:48:13,499 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2018-01-31 08:48:13,499 INFO L87 Difference]: Start difference. First operand 159 states and 166 transitions. Second operand 20 states. [2018-01-31 08:48:13,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:13,726 INFO L93 Difference]: Finished difference Result 302 states and 322 transitions. [2018-01-31 08:48:13,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-31 08:48:13,732 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 244 [2018-01-31 08:48:13,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:13,733 INFO L225 Difference]: With dead ends: 302 [2018-01-31 08:48:13,733 INFO L226 Difference]: Without dead ends: 197 [2018-01-31 08:48:13,734 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2018-01-31 08:48:13,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-01-31 08:48:13,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 181. [2018-01-31 08:48:13,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-01-31 08:48:13,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 189 transitions. [2018-01-31 08:48:13,738 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 189 transitions. Word has length 244 [2018-01-31 08:48:13,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:13,738 INFO L432 AbstractCegarLoop]: Abstraction has 181 states and 189 transitions. [2018-01-31 08:48:13,738 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-01-31 08:48:13,738 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 189 transitions. [2018-01-31 08:48:13,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-01-31 08:48:13,740 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:13,740 INFO L351 BasicCegarLoop]: trace histogram [15, 12, 12, 12, 12, 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 08:48:13,740 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolation]=== [2018-01-31 08:48:13,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1270212620, now seen corresponding path program 6 times [2018-01-31 08:48:13,740 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:13,740 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:13,741 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:13,741 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:48:13,741 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:13,754 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:13,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2018-01-31 08:48:13,931 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:13,931 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 08:48:13,937 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:48:13,947 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:13,953 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:13,957 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:13,961 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:13,967 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:13,981 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:13,992 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:13,993 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:48:13,996 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:14,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2018-01-31 08:48:14,072 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:48:14,072 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2018-01-31 08:48:14,072 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-31 08:48:14,072 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-31 08:48:14,073 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-01-31 08:48:14,073 INFO L87 Difference]: Start difference. First operand 181 states and 189 transitions. Second operand 17 states. [2018-01-31 08:48:14,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:14,330 INFO L93 Difference]: Finished difference Result 313 states and 329 transitions. [2018-01-31 08:48:14,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-31 08:48:14,330 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 288 [2018-01-31 08:48:14,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:14,331 INFO L225 Difference]: With dead ends: 313 [2018-01-31 08:48:14,331 INFO L226 Difference]: Without dead ends: 194 [2018-01-31 08:48:14,332 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2018-01-31 08:48:14,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-01-31 08:48:14,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 189. [2018-01-31 08:48:14,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-31 08:48:14,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 197 transitions. [2018-01-31 08:48:14,335 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 197 transitions. Word has length 288 [2018-01-31 08:48:14,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:14,335 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 197 transitions. [2018-01-31 08:48:14,335 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-31 08:48:14,335 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 197 transitions. [2018-01-31 08:48:14,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-01-31 08:48:14,336 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:14,336 INFO L351 BasicCegarLoop]: trace histogram [15, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 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 08:48:14,336 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolation]=== [2018-01-31 08:48:14,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1406938403, now seen corresponding path program 7 times [2018-01-31 08:48:14,336 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:14,336 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:14,337 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:14,337 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:48:14,337 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:14,350 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:14,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2018-01-31 08:48:14,779 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:14,779 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 08:48:14,784 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:48:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:14,830 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:14,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2018-01-31 08:48:14,930 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:48:14,930 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2018-01-31 08:48:14,931 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-31 08:48:14,931 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-31 08:48:14,931 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-31 08:48:14,931 INFO L87 Difference]: Start difference. First operand 189 states and 197 transitions. Second operand 19 states. [2018-01-31 08:48:15,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:15,170 INFO L93 Difference]: Finished difference Result 321 states and 337 transitions. [2018-01-31 08:48:15,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-31 08:48:15,178 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 296 [2018-01-31 08:48:15,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:15,178 INFO L225 Difference]: With dead ends: 321 [2018-01-31 08:48:15,178 INFO L226 Difference]: Without dead ends: 202 [2018-01-31 08:48:15,179 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 08:48:15,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-01-31 08:48:15,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 197. [2018-01-31 08:48:15,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-01-31 08:48:15,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 205 transitions. [2018-01-31 08:48:15,182 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 205 transitions. Word has length 296 [2018-01-31 08:48:15,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:15,182 INFO L432 AbstractCegarLoop]: Abstraction has 197 states and 205 transitions. [2018-01-31 08:48:15,182 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-31 08:48:15,182 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 205 transitions. [2018-01-31 08:48:15,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-01-31 08:48:15,183 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:15,184 INFO L351 BasicCegarLoop]: trace histogram [15, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 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 08:48:15,184 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolation]=== [2018-01-31 08:48:15,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1710003398, now seen corresponding path program 8 times [2018-01-31 08:48:15,184 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:15,184 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:15,184 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:15,185 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:48:15,185 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:15,197 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:15,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1164 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2018-01-31 08:48:15,427 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:15,427 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 08:48:15,431 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:48:15,442 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:15,460 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:15,471 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:48:15,473 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:15,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1164 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2018-01-31 08:48:15,558 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:48:15,559 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-31 08:48:15,559 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 08:48:15,559 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 08:48:15,559 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-31 08:48:15,559 INFO L87 Difference]: Start difference. First operand 197 states and 205 transitions. Second operand 21 states. [2018-01-31 08:48:15,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:15,785 INFO L93 Difference]: Finished difference Result 329 states and 345 transitions. [2018-01-31 08:48:15,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-31 08:48:15,785 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 304 [2018-01-31 08:48:15,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:15,786 INFO L225 Difference]: With dead ends: 329 [2018-01-31 08:48:15,786 INFO L226 Difference]: Without dead ends: 210 [2018-01-31 08:48:15,786 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 303 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 08:48:15,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-01-31 08:48:15,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 205. [2018-01-31 08:48:15,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-01-31 08:48:15,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 213 transitions. [2018-01-31 08:48:15,789 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 213 transitions. Word has length 304 [2018-01-31 08:48:15,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:15,789 INFO L432 AbstractCegarLoop]: Abstraction has 205 states and 213 transitions. [2018-01-31 08:48:15,789 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 08:48:15,789 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 213 transitions. [2018-01-31 08:48:15,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-01-31 08:48:15,790 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:15,790 INFO L351 BasicCegarLoop]: trace histogram [15, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 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 08:48:15,790 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolation]=== [2018-01-31 08:48:15,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1638751663, now seen corresponding path program 9 times [2018-01-31 08:48:15,791 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:15,791 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:15,791 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:15,791 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:48:15,791 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:15,802 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:16,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2018-01-31 08:48:16,116 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:16,116 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 08:48:16,121 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:48:16,132 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:16,136 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:16,142 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:16,148 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:16,177 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:16,178 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:48:16,181 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:16,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 426 proven. 80 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2018-01-31 08:48:16,306 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:48:16,306 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 11] total 30 [2018-01-31 08:48:16,306 INFO L409 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-01-31 08:48:16,306 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-01-31 08:48:16,307 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=716, Unknown=0, NotChecked=0, Total=870 [2018-01-31 08:48:16,307 INFO L87 Difference]: Start difference. First operand 205 states and 213 transitions. Second operand 30 states. [2018-01-31 08:48:16,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:16,706 INFO L93 Difference]: Finished difference Result 362 states and 384 transitions. [2018-01-31 08:48:16,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-01-31 08:48:16,706 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 312 [2018-01-31 08:48:16,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:16,707 INFO L225 Difference]: With dead ends: 362 [2018-01-31 08:48:16,707 INFO L226 Difference]: Without dead ends: 243 [2018-01-31 08:48:16,708 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=620, Invalid=2460, Unknown=0, NotChecked=0, Total=3080 [2018-01-31 08:48:16,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-01-31 08:48:16,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 227. [2018-01-31 08:48:16,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-01-31 08:48:16,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 236 transitions. [2018-01-31 08:48:16,711 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 236 transitions. Word has length 312 [2018-01-31 08:48:16,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:16,711 INFO L432 AbstractCegarLoop]: Abstraction has 227 states and 236 transitions. [2018-01-31 08:48:16,711 INFO L433 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-01-31 08:48:16,711 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 236 transitions. [2018-01-31 08:48:16,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-01-31 08:48:16,712 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:16,712 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 11, 10, 10, 10, 10, 10, 10, 10, 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 08:48:16,713 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolation]=== [2018-01-31 08:48:16,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1735401898, now seen corresponding path program 10 times [2018-01-31 08:48:16,713 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:16,713 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:16,713 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:16,713 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:48:16,713 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:16,725 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:17,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1790 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 1410 trivial. 0 not checked. [2018-01-31 08:48:17,238 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:17,238 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 08:48:17,243 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:48:17,294 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:48:17,297 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1790 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 1410 trivial. 0 not checked. [2018-01-31 08:48:17,410 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:48:17,410 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2018-01-31 08:48:17,411 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-31 08:48:17,411 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-31 08:48:17,411 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-01-31 08:48:17,411 INFO L87 Difference]: Start difference. First operand 227 states and 236 transitions. Second operand 25 states. [2018-01-31 08:48:17,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:17,666 INFO L93 Difference]: Finished difference Result 373 states and 391 transitions. [2018-01-31 08:48:17,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-31 08:48:17,674 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 356 [2018-01-31 08:48:17,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:17,675 INFO L225 Difference]: With dead ends: 373 [2018-01-31 08:48:17,675 INFO L226 Difference]: Without dead ends: 240 [2018-01-31 08:48:17,676 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 355 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 08:48:17,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-01-31 08:48:17,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 235. [2018-01-31 08:48:17,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-01-31 08:48:17,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 244 transitions. [2018-01-31 08:48:17,679 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 244 transitions. Word has length 356 [2018-01-31 08:48:17,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:17,679 INFO L432 AbstractCegarLoop]: Abstraction has 235 states and 244 transitions. [2018-01-31 08:48:17,679 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-31 08:48:17,679 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 244 transitions. [2018-01-31 08:48:17,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-01-31 08:48:17,680 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:17,680 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 12, 11, 11, 11, 11, 11, 11, 11, 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 08:48:17,680 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolation]=== [2018-01-31 08:48:17,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1749579795, now seen corresponding path program 11 times [2018-01-31 08:48:17,680 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:17,680 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:17,681 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:17,681 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:48:17,681 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:17,692 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:18,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 1410 trivial. 0 not checked. [2018-01-31 08:48:18,341 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:18,342 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 08:48:18,346 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:48:18,356 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:18,368 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:18,378 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:18,388 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:18,399 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:18,413 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:18,427 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:18,436 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:18,451 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:18,475 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:18,487 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:48:18,491 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:18,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 654 proven. 130 refuted. 0 times theorem prover too weak. 1088 trivial. 0 not checked. [2018-01-31 08:48:18,681 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:48:18,682 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13] total 36 [2018-01-31 08:48:18,682 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-31 08:48:18,682 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-31 08:48:18,683 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1045, Unknown=0, NotChecked=0, Total=1260 [2018-01-31 08:48:18,683 INFO L87 Difference]: Start difference. First operand 235 states and 244 transitions. Second operand 36 states. [2018-01-31 08:48:19,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:19,727 INFO L93 Difference]: Finished difference Result 406 states and 430 transitions. [2018-01-31 08:48:19,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-01-31 08:48:19,728 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 364 [2018-01-31 08:48:19,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:19,728 INFO L225 Difference]: With dead ends: 406 [2018-01-31 08:48:19,729 INFO L226 Difference]: Without dead ends: 273 [2018-01-31 08:48:19,730 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=895, Invalid=3661, Unknown=0, NotChecked=0, Total=4556 [2018-01-31 08:48:19,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-01-31 08:48:19,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 257. [2018-01-31 08:48:19,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-01-31 08:48:19,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 267 transitions. [2018-01-31 08:48:19,733 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 267 transitions. Word has length 364 [2018-01-31 08:48:19,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:19,733 INFO L432 AbstractCegarLoop]: Abstraction has 257 states and 267 transitions. [2018-01-31 08:48:19,733 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-31 08:48:19,733 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 267 transitions. [2018-01-31 08:48:19,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-01-31 08:48:19,734 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:19,735 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 13, 12, 12, 12, 12, 12, 12, 12, 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 08:48:19,735 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolation]=== [2018-01-31 08:48:19,735 INFO L82 PathProgramCache]: Analyzing trace with hash 816555918, now seen corresponding path program 12 times [2018-01-31 08:48:19,735 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:19,735 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:19,735 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:19,735 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:48:19,736 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:19,748 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:20,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 2004 trivial. 0 not checked. [2018-01-31 08:48:20,471 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:20,471 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:48:20,476 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:48:20,488 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:20,490 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:20,493 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:20,496 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:20,501 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:20,510 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:20,529 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:20,550 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:20,569 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:20,573 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:48:20,576 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:21,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 932 proven. 30 refuted. 0 times theorem prover too weak. 1594 trivial. 0 not checked. [2018-01-31 08:48:21,352 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:48:21,352 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 9] total 34 [2018-01-31 08:48:21,352 INFO L409 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-01-31 08:48:21,352 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-01-31 08:48:21,353 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=904, Unknown=0, NotChecked=0, Total=1122 [2018-01-31 08:48:21,353 INFO L87 Difference]: Start difference. First operand 257 states and 267 transitions. Second operand 34 states. [2018-01-31 08:48:21,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:21,826 INFO L93 Difference]: Finished difference Result 430 states and 451 transitions. [2018-01-31 08:48:21,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-01-31 08:48:21,826 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 408 [2018-01-31 08:48:21,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:21,827 INFO L225 Difference]: With dead ends: 430 [2018-01-31 08:48:21,827 INFO L226 Difference]: Without dead ends: 283 [2018-01-31 08:48:21,828 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=920, Invalid=3112, Unknown=0, NotChecked=0, Total=4032 [2018-01-31 08:48:21,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-01-31 08:48:21,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 273. [2018-01-31 08:48:21,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-01-31 08:48:21,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 283 transitions. [2018-01-31 08:48:21,832 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 283 transitions. Word has length 408 [2018-01-31 08:48:21,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:21,832 INFO L432 AbstractCegarLoop]: Abstraction has 273 states and 283 transitions. [2018-01-31 08:48:21,832 INFO L433 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-01-31 08:48:21,832 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 283 transitions. [2018-01-31 08:48:21,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-01-31 08:48:21,834 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:21,834 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 14, 13, 13, 13, 13, 13, 13, 13, 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 08:48:21,834 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolation]=== [2018-01-31 08:48:21,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1297830290, now seen corresponding path program 13 times [2018-01-31 08:48:21,834 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:21,834 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:21,835 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:21,835 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:48:21,835 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:21,847 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:22,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2680 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 2030 trivial. 0 not checked. [2018-01-31 08:48:22,380 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:22,380 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 08:48:22,391 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:48:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:22,433 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:22,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2680 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 2030 trivial. 0 not checked. [2018-01-31 08:48:22,521 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:48:22,522 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2018-01-31 08:48:22,522 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-31 08:48:22,522 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-31 08:48:22,522 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-31 08:48:22,522 INFO L87 Difference]: Start difference. First operand 273 states and 283 transitions. Second operand 31 states. [2018-01-31 08:48:22,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:22,794 INFO L93 Difference]: Finished difference Result 441 states and 461 transitions. [2018-01-31 08:48:22,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-31 08:48:22,814 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 424 [2018-01-31 08:48:22,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:22,815 INFO L225 Difference]: With dead ends: 441 [2018-01-31 08:48:22,815 INFO L226 Difference]: Without dead ends: 286 [2018-01-31 08:48:22,816 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2018-01-31 08:48:22,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-01-31 08:48:22,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 281. [2018-01-31 08:48:22,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-01-31 08:48:22,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 291 transitions. [2018-01-31 08:48:22,819 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 291 transitions. Word has length 424 [2018-01-31 08:48:22,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:22,820 INFO L432 AbstractCegarLoop]: Abstraction has 281 states and 291 transitions. [2018-01-31 08:48:22,820 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-31 08:48:22,820 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 291 transitions. [2018-01-31 08:48:22,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-01-31 08:48:22,821 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:22,821 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 15, 14, 14, 14, 14, 14, 14, 14, 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 08:48:22,821 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolation]=== [2018-01-31 08:48:22,821 INFO L82 PathProgramCache]: Analyzing trace with hash 673570903, now seen corresponding path program 14 times [2018-01-31 08:48:22,821 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:22,821 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:22,822 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:22,822 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:48:22,822 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:22,834 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:23,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2786 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 2030 trivial. 0 not checked. [2018-01-31 08:48:23,352 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:23,352 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:48:23,356 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:48:23,369 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:23,394 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:23,399 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:48:23,402 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:23,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2786 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 2030 trivial. 0 not checked. [2018-01-31 08:48:23,563 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:48:23,563 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2018-01-31 08:48:23,564 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-31 08:48:23,564 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-31 08:48:23,564 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 08:48:23,568 INFO L87 Difference]: Start difference. First operand 281 states and 291 transitions. Second operand 33 states. [2018-01-31 08:48:23,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:23,893 INFO L93 Difference]: Finished difference Result 449 states and 469 transitions. [2018-01-31 08:48:23,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-31 08:48:23,893 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 432 [2018-01-31 08:48:23,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:23,894 INFO L225 Difference]: With dead ends: 449 [2018-01-31 08:48:23,894 INFO L226 Difference]: Without dead ends: 294 [2018-01-31 08:48:23,895 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2018-01-31 08:48:23,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2018-01-31 08:48:23,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 289. [2018-01-31 08:48:23,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-01-31 08:48:23,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 299 transitions. [2018-01-31 08:48:23,898 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 299 transitions. Word has length 432 [2018-01-31 08:48:23,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:23,899 INFO L432 AbstractCegarLoop]: Abstraction has 289 states and 299 transitions. [2018-01-31 08:48:23,899 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-31 08:48:23,899 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 299 transitions. [2018-01-31 08:48:23,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2018-01-31 08:48:23,900 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:23,900 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 16, 15, 15, 15, 15, 15, 15, 15, 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 08:48:23,900 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolation]=== [2018-01-31 08:48:23,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1741743808, now seen corresponding path program 15 times [2018-01-31 08:48:23,901 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:23,901 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:23,901 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:23,901 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:48:23,901 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:23,913 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2900 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 2030 trivial. 0 not checked. [2018-01-31 08:48:24,434 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:24,434 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 08:48:24,443 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:48:24,465 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:24,481 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:24,492 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:24,504 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:24,518 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:24,574 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:24,575 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:48:24,578 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:24,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2900 backedges. 932 proven. 56 refuted. 0 times theorem prover too weak. 1912 trivial. 0 not checked. [2018-01-31 08:48:24,819 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:48:24,819 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 11] total 42 [2018-01-31 08:48:24,820 INFO L409 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-01-31 08:48:24,820 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-01-31 08:48:24,820 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=1400, Unknown=0, NotChecked=0, Total=1722 [2018-01-31 08:48:24,820 INFO L87 Difference]: Start difference. First operand 289 states and 299 transitions. Second operand 42 states. [2018-01-31 08:48:25,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:25,368 INFO L93 Difference]: Finished difference Result 470 states and 491 transitions. [2018-01-31 08:48:25,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-01-31 08:48:25,369 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 440 [2018-01-31 08:48:25,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:25,370 INFO L225 Difference]: With dead ends: 470 [2018-01-31 08:48:25,370 INFO L226 Difference]: Without dead ends: 315 [2018-01-31 08:48:25,371 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1186 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1400, Invalid=4920, Unknown=0, NotChecked=0, Total=6320 [2018-01-31 08:48:25,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-01-31 08:48:25,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 305. [2018-01-31 08:48:25,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-01-31 08:48:25,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 315 transitions. [2018-01-31 08:48:25,374 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 315 transitions. Word has length 440 [2018-01-31 08:48:25,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:25,375 INFO L432 AbstractCegarLoop]: Abstraction has 305 states and 315 transitions. [2018-01-31 08:48:25,375 INFO L433 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-01-31 08:48:25,375 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 315 transitions. [2018-01-31 08:48:25,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2018-01-31 08:48:25,376 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:25,376 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 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 08:48:25,376 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolation]=== [2018-01-31 08:48:25,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1712428512, now seen corresponding path program 16 times [2018-01-31 08:48:25,377 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:25,377 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:25,377 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:25,377 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:48:25,377 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:25,390 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:26,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3056 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 2064 trivial. 0 not checked. [2018-01-31 08:48:26,292 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:26,292 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 08:48:26,297 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:48:26,406 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:48:26,410 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:26,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3056 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 2064 trivial. 0 not checked. [2018-01-31 08:48:26,564 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:48:26,565 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2018-01-31 08:48:26,565 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-31 08:48:26,565 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-31 08:48:26,565 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 08:48:26,565 INFO L87 Difference]: Start difference. First operand 305 states and 315 transitions. Second operand 37 states. [2018-01-31 08:48:27,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:27,089 INFO L93 Difference]: Finished difference Result 481 states and 501 transitions. [2018-01-31 08:48:27,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-01-31 08:48:27,089 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 456 [2018-01-31 08:48:27,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:27,090 INFO L225 Difference]: With dead ends: 481 [2018-01-31 08:48:27,090 INFO L226 Difference]: Without dead ends: 318 [2018-01-31 08:48:27,091 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2018-01-31 08:48:27,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-01-31 08:48:27,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 313. [2018-01-31 08:48:27,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-01-31 08:48:27,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 323 transitions. [2018-01-31 08:48:27,095 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 323 transitions. Word has length 456 [2018-01-31 08:48:27,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:27,095 INFO L432 AbstractCegarLoop]: Abstraction has 313 states and 323 transitions. [2018-01-31 08:48:27,096 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-31 08:48:27,096 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 323 transitions. [2018-01-31 08:48:27,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2018-01-31 08:48:27,097 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:27,098 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 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 08:48:27,098 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolation]=== [2018-01-31 08:48:27,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1614432247, now seen corresponding path program 17 times [2018-01-31 08:48:27,098 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:27,098 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:27,098 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:27,098 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:48:27,099 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:27,111 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:27,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 2064 trivial. 0 not checked. [2018-01-31 08:48:27,826 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:27,826 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 08:48:27,831 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:48:27,843 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:27,844 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:27,845 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:27,847 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:27,848 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:27,850 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:27,852 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:27,855 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:27,862 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:27,869 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:27,875 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:27,884 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:27,895 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:27,969 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:28,053 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:28,422 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:28,424 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:48:28,428 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:28,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 926 proven. 192 refuted. 0 times theorem prover too weak. 2068 trivial. 0 not checked. [2018-01-31 08:48:28,778 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:48:28,778 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 15] total 50 [2018-01-31 08:48:28,779 INFO L409 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-01-31 08:48:28,779 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-01-31 08:48:28,779 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=2028, Unknown=0, NotChecked=0, Total=2450 [2018-01-31 08:48:28,779 INFO L87 Difference]: Start difference. First operand 313 states and 323 transitions. Second operand 50 states. [2018-01-31 08:48:29,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:29,588 INFO L93 Difference]: Finished difference Result 514 states and 540 transitions. [2018-01-31 08:48:29,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-01-31 08:48:29,588 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 464 [2018-01-31 08:48:29,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:29,589 INFO L225 Difference]: With dead ends: 514 [2018-01-31 08:48:29,589 INFO L226 Difference]: Without dead ends: 351 [2018-01-31 08:48:29,591 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1766 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1860, Invalid=7260, Unknown=0, NotChecked=0, Total=9120 [2018-01-31 08:48:29,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-01-31 08:48:29,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 335. [2018-01-31 08:48:29,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-01-31 08:48:29,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 346 transitions. [2018-01-31 08:48:29,595 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 346 transitions. Word has length 464 [2018-01-31 08:48:29,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:29,595 INFO L432 AbstractCegarLoop]: Abstraction has 335 states and 346 transitions. [2018-01-31 08:48:29,595 INFO L433 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-01-31 08:48:29,596 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 346 transitions. [2018-01-31 08:48:29,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2018-01-31 08:48:29,597 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:29,598 INFO L351 BasicCegarLoop]: trace histogram [24, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 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 08:48:29,598 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolation]=== [2018-01-31 08:48:29,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1406322180, now seen corresponding path program 18 times [2018-01-31 08:48:29,598 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:29,598 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:29,598 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:29,599 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:48:29,599 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:29,612 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:30,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4026 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 2766 trivial. 0 not checked. [2018-01-31 08:48:30,385 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:30,385 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 08:48:30,390 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:48:30,404 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:30,415 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:30,427 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:30,441 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:30,455 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:30,477 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:30,489 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:30,538 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:30,609 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:30,717 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:30,784 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:30,916 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:31,029 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:31,031 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:48:31,035 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:31,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4026 backedges. 1252 proven. 90 refuted. 0 times theorem prover too weak. 2684 trivial. 0 not checked. [2018-01-31 08:48:31,355 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:48:31,355 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 13] total 50 [2018-01-31 08:48:31,356 INFO L409 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-01-31 08:48:31,356 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-01-31 08:48:31,356 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=446, Invalid=2004, Unknown=0, NotChecked=0, Total=2450 [2018-01-31 08:48:31,356 INFO L87 Difference]: Start difference. First operand 335 states and 346 transitions. Second operand 50 states. [2018-01-31 08:48:32,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:32,065 INFO L93 Difference]: Finished difference Result 538 states and 561 transitions. [2018-01-31 08:48:32,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-01-31 08:48:32,065 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 508 [2018-01-31 08:48:32,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:32,066 INFO L225 Difference]: With dead ends: 538 [2018-01-31 08:48:32,066 INFO L226 Difference]: Without dead ends: 361 [2018-01-31 08:48:32,068 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1746 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1980, Invalid=7140, Unknown=0, NotChecked=0, Total=9120 [2018-01-31 08:48:32,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-01-31 08:48:32,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 351. [2018-01-31 08:48:32,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-01-31 08:48:32,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 362 transitions. [2018-01-31 08:48:32,071 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 362 transitions. Word has length 508 [2018-01-31 08:48:32,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:32,071 INFO L432 AbstractCegarLoop]: Abstraction has 351 states and 362 transitions. [2018-01-31 08:48:32,071 INFO L433 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-01-31 08:48:32,072 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 362 transitions. [2018-01-31 08:48:32,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2018-01-31 08:48:32,073 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:32,073 INFO L351 BasicCegarLoop]: trace histogram [24, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 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 08:48:32,073 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr0AssertViolation]=== [2018-01-31 08:48:32,074 INFO L82 PathProgramCache]: Analyzing trace with hash 2071619044, now seen corresponding path program 19 times [2018-01-31 08:48:32,074 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:32,074 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:32,074 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:32,074 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:48:32,074 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:32,088 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:32,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4214 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 2808 trivial. 0 not checked. [2018-01-31 08:48:32,960 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:32,960 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 08:48:32,966 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:48:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:33,018 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:33,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4214 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 2808 trivial. 0 not checked. [2018-01-31 08:48:33,131 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:48:33,131 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2018-01-31 08:48:33,131 INFO L409 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-01-31 08:48:33,132 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-01-31 08:48:33,132 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2018-01-31 08:48:33,132 INFO L87 Difference]: Start difference. First operand 351 states and 362 transitions. Second operand 43 states. [2018-01-31 08:48:33,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:33,608 INFO L93 Difference]: Finished difference Result 549 states and 571 transitions. [2018-01-31 08:48:33,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-01-31 08:48:33,608 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 524 [2018-01-31 08:48:33,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:33,609 INFO L225 Difference]: With dead ends: 549 [2018-01-31 08:48:33,609 INFO L226 Difference]: Without dead ends: 364 [2018-01-31 08:48:33,610 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2018-01-31 08:48:33,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2018-01-31 08:48:33,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 359. [2018-01-31 08:48:33,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-01-31 08:48:33,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 370 transitions. [2018-01-31 08:48:33,614 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 370 transitions. Word has length 524 [2018-01-31 08:48:33,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:33,614 INFO L432 AbstractCegarLoop]: Abstraction has 359 states and 370 transitions. [2018-01-31 08:48:33,614 INFO L433 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-01-31 08:48:33,614 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 370 transitions. [2018-01-31 08:48:33,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2018-01-31 08:48:33,616 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:33,616 INFO L351 BasicCegarLoop]: trace histogram [24, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 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 08:48:33,616 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr0AssertViolation]=== [2018-01-31 08:48:33,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1321808051, now seen corresponding path program 20 times [2018-01-31 08:48:33,616 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:33,616 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:33,617 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:33,617 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:48:33,617 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:33,631 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:34,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4368 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 2808 trivial. 0 not checked. [2018-01-31 08:48:34,607 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:34,607 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 08:48:34,613 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:48:34,627 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:34,666 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:34,677 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:48:34,681 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:34,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4368 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 2808 trivial. 0 not checked. [2018-01-31 08:48:34,995 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:48:34,996 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2018-01-31 08:48:34,996 INFO L409 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-01-31 08:48:34,996 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-01-31 08:48:34,996 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2018-01-31 08:48:34,997 INFO L87 Difference]: Start difference. First operand 359 states and 370 transitions. Second operand 45 states. [2018-01-31 08:48:35,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:35,507 INFO L93 Difference]: Finished difference Result 557 states and 579 transitions. [2018-01-31 08:48:35,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-01-31 08:48:35,508 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 532 [2018-01-31 08:48:35,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:35,509 INFO L225 Difference]: With dead ends: 557 [2018-01-31 08:48:35,509 INFO L226 Difference]: Without dead ends: 372 [2018-01-31 08:48:35,510 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2251, Invalid=4889, Unknown=0, NotChecked=0, Total=7140 [2018-01-31 08:48:35,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2018-01-31 08:48:35,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 367. [2018-01-31 08:48:35,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-01-31 08:48:35,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 378 transitions. [2018-01-31 08:48:35,513 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 378 transitions. Word has length 532 [2018-01-31 08:48:35,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:35,513 INFO L432 AbstractCegarLoop]: Abstraction has 367 states and 378 transitions. [2018-01-31 08:48:35,513 INFO L433 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-01-31 08:48:35,514 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 378 transitions. [2018-01-31 08:48:35,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2018-01-31 08:48:35,515 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:35,516 INFO L351 BasicCegarLoop]: trace histogram [24, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 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 08:48:35,516 INFO L371 AbstractCegarLoop]: === Iteration 25 === [mainErr0AssertViolation]=== [2018-01-31 08:48:35,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1284226998, now seen corresponding path program 21 times [2018-01-31 08:48:35,516 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:35,516 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:35,516 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:35,516 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:48:35,516 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:35,530 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:36,732 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 2808 trivial. 0 not checked. [2018-01-31 08:48:36,732 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:36,732 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 08:48:36,748 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:48:36,762 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:36,774 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:36,786 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:36,801 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:36,822 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:36,873 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:36,925 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:37,002 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:37,004 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:48:37,007 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:37,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 1252 proven. 132 refuted. 0 times theorem prover too weak. 3146 trivial. 0 not checked. [2018-01-31 08:48:37,527 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:48:37,527 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 15] total 58 [2018-01-31 08:48:37,528 INFO L409 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-01-31 08:48:37,528 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-01-31 08:48:37,528 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=590, Invalid=2716, Unknown=0, NotChecked=0, Total=3306 [2018-01-31 08:48:37,528 INFO L87 Difference]: Start difference. First operand 367 states and 378 transitions. Second operand 58 states. [2018-01-31 08:48:38,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:38,734 INFO L93 Difference]: Finished difference Result 578 states and 601 transitions. [2018-01-31 08:48:38,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-01-31 08:48:38,735 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 540 [2018-01-31 08:48:38,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:38,736 INFO L225 Difference]: With dead ends: 578 [2018-01-31 08:48:38,736 INFO L226 Difference]: Without dead ends: 393 [2018-01-31 08:48:38,737 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2660, Invalid=9772, Unknown=0, NotChecked=0, Total=12432 [2018-01-31 08:48:38,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2018-01-31 08:48:38,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 383. [2018-01-31 08:48:38,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-01-31 08:48:38,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 394 transitions. [2018-01-31 08:48:38,740 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 394 transitions. Word has length 540 [2018-01-31 08:48:38,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:38,741 INFO L432 AbstractCegarLoop]: Abstraction has 383 states and 394 transitions. [2018-01-31 08:48:38,741 INFO L433 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-01-31 08:48:38,741 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 394 transitions. [2018-01-31 08:48:38,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2018-01-31 08:48:38,743 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:38,743 INFO L351 BasicCegarLoop]: trace histogram [24, 23, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 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 08:48:38,743 INFO L371 AbstractCegarLoop]: === Iteration 26 === [mainErr0AssertViolation]=== [2018-01-31 08:48:38,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1161013654, now seen corresponding path program 22 times [2018-01-31 08:48:38,743 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:38,743 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:38,744 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:38,744 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:48:38,744 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:38,761 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:39,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4750 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 2858 trivial. 0 not checked. [2018-01-31 08:48:39,897 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:39,897 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 08:48:39,918 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:48:40,249 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:48:40,254 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:40,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4750 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 2858 trivial. 0 not checked. [2018-01-31 08:48:40,403 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:48:40,404 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2018-01-31 08:48:40,404 INFO L409 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-01-31 08:48:40,404 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-01-31 08:48:40,405 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2018-01-31 08:48:40,405 INFO L87 Difference]: Start difference. First operand 383 states and 394 transitions. Second operand 49 states. [2018-01-31 08:48:41,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:41,006 INFO L93 Difference]: Finished difference Result 589 states and 611 transitions. [2018-01-31 08:48:41,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-01-31 08:48:41,007 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 556 [2018-01-31 08:48:41,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:41,008 INFO L225 Difference]: With dead ends: 589 [2018-01-31 08:48:41,008 INFO L226 Difference]: Without dead ends: 396 [2018-01-31 08:48:41,008 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 555 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 08:48:41,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2018-01-31 08:48:41,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 391. [2018-01-31 08:48:41,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-01-31 08:48:41,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 402 transitions. [2018-01-31 08:48:41,012 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 402 transitions. Word has length 556 [2018-01-31 08:48:41,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:41,012 INFO L432 AbstractCegarLoop]: Abstraction has 391 states and 402 transitions. [2018-01-31 08:48:41,012 INFO L433 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-01-31 08:48:41,012 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 402 transitions. [2018-01-31 08:48:41,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2018-01-31 08:48:41,014 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:41,014 INFO L351 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 23, 23, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 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 08:48:41,014 INFO L371 AbstractCegarLoop]: === Iteration 27 === [mainErr0AssertViolation]=== [2018-01-31 08:48:41,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1534578945, now seen corresponding path program 23 times [2018-01-31 08:48:41,015 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:41,015 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:41,015 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:41,015 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:48:41,015 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:41,030 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:42,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4928 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 2858 trivial. 0 not checked. [2018-01-31 08:48:42,180 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:42,180 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:48:42,185 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:48:42,197 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:42,198 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:42,199 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:42,201 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:42,203 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:42,205 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:42,207 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:42,210 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:42,214 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:42,218 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:42,224 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:42,229 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:42,238 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:42,243 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:42,253 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:42,262 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:42,280 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:42,399 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:42,566 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:42,619 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:43,328 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:43,977 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:43,979 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:48:43,984 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:44,302 INFO L134 CoverageAnalysis]: Checked inductivity of 4928 backedges. 1246 proven. 266 refuted. 0 times theorem prover too weak. 3416 trivial. 0 not checked. [2018-01-31 08:48:44,322 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:48:44,322 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 17] total 64 [2018-01-31 08:48:44,322 INFO L409 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-01-31 08:48:44,323 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-01-31 08:48:44,323 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=3329, Unknown=0, NotChecked=0, Total=4032 [2018-01-31 08:48:44,323 INFO L87 Difference]: Start difference. First operand 391 states and 402 transitions. Second operand 64 states. [2018-01-31 08:48:46,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:46,815 INFO L93 Difference]: Finished difference Result 622 states and 650 transitions. [2018-01-31 08:48:46,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-01-31 08:48:46,816 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 564 [2018-01-31 08:48:46,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:46,817 INFO L225 Difference]: With dead ends: 622 [2018-01-31 08:48:46,817 INFO L226 Difference]: Without dead ends: 429 [2018-01-31 08:48:46,818 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 550 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2993 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3195, Invalid=12057, Unknown=0, NotChecked=0, Total=15252 [2018-01-31 08:48:46,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2018-01-31 08:48:46,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 413. [2018-01-31 08:48:46,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-01-31 08:48:46,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 425 transitions. [2018-01-31 08:48:46,835 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 425 transitions. Word has length 564 [2018-01-31 08:48:46,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:46,835 INFO L432 AbstractCegarLoop]: Abstraction has 413 states and 425 transitions. [2018-01-31 08:48:46,835 INFO L433 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-01-31 08:48:46,835 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 425 transitions. [2018-01-31 08:48:46,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2018-01-31 08:48:46,837 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:46,838 INFO L351 BasicCegarLoop]: trace histogram [27, 25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 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 08:48:46,838 INFO L371 AbstractCegarLoop]: === Iteration 28 === [mainErr0AssertViolation]=== [2018-01-31 08:48:46,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1018551162, now seen corresponding path program 24 times [2018-01-31 08:48:46,838 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:46,838 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:46,839 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:46,839 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:48:46,839 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:46,868 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:48,283 INFO L134 CoverageAnalysis]: Checked inductivity of 5924 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 3668 trivial. 0 not checked. [2018-01-31 08:48:48,284 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:48,284 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 08:48:48,289 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:48:48,304 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:48,306 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:48,309 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:48,312 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:48,318 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:48,325 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:48,348 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:48,413 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:48,505 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:48,547 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:48,704 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:48,991 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:49,300 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:49,660 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:49,803 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:50,097 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:50,161 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:48:50,163 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:48:50,169 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:50,469 INFO L134 CoverageAnalysis]: Checked inductivity of 5924 backedges. 1620 proven. 182 refuted. 0 times theorem prover too weak. 4122 trivial. 0 not checked. [2018-01-31 08:48:50,488 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:48:50,488 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 17] total 66 [2018-01-31 08:48:50,489 INFO L409 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-01-31 08:48:50,489 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-01-31 08:48:50,489 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=754, Invalid=3536, Unknown=0, NotChecked=0, Total=4290 [2018-01-31 08:48:50,489 INFO L87 Difference]: Start difference. First operand 413 states and 425 transitions. Second operand 66 states. [2018-01-31 08:48:51,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:51,692 INFO L93 Difference]: Finished difference Result 646 states and 671 transitions. [2018-01-31 08:48:51,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-01-31 08:48:51,692 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 608 [2018-01-31 08:48:51,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:51,693 INFO L225 Difference]: With dead ends: 646 [2018-01-31 08:48:51,693 INFO L226 Difference]: Without dead ends: 439 [2018-01-31 08:48:51,694 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 594 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3190 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3440, Invalid=12816, Unknown=0, NotChecked=0, Total=16256 [2018-01-31 08:48:51,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2018-01-31 08:48:51,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 429. [2018-01-31 08:48:51,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2018-01-31 08:48:51,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 441 transitions. [2018-01-31 08:48:51,698 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 441 transitions. Word has length 608 [2018-01-31 08:48:51,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:51,698 INFO L432 AbstractCegarLoop]: Abstraction has 429 states and 441 transitions. [2018-01-31 08:48:51,698 INFO L433 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-01-31 08:48:51,698 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 441 transitions. [2018-01-31 08:48:51,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2018-01-31 08:48:51,700 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:51,700 INFO L351 BasicCegarLoop]: trace histogram [27, 26, 25, 25, 25, 25, 25, 25, 25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 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 08:48:51,700 INFO L371 AbstractCegarLoop]: === Iteration 29 === [mainErr0AssertViolation]=== [2018-01-31 08:48:51,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1273762906, now seen corresponding path program 25 times [2018-01-31 08:48:51,701 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:51,701 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:51,701 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:51,701 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:48:51,701 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:51,716 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:53,341 INFO L134 CoverageAnalysis]: Checked inductivity of 6176 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 3726 trivial. 0 not checked. [2018-01-31 08:48:53,341 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:53,341 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 08:48:53,346 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:48:53,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:53,404 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:53,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6176 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 3726 trivial. 0 not checked. [2018-01-31 08:48:53,547 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:48:53,547 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 55 [2018-01-31 08:48:53,547 INFO L409 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-01-31 08:48:53,548 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-01-31 08:48:53,548 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=2187, Unknown=0, NotChecked=0, Total=2970 [2018-01-31 08:48:53,548 INFO L87 Difference]: Start difference. First operand 429 states and 441 transitions. Second operand 55 states. [2018-01-31 08:48:54,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:54,310 INFO L93 Difference]: Finished difference Result 657 states and 681 transitions. [2018-01-31 08:48:54,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-01-31 08:48:54,310 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 624 [2018-01-31 08:48:54,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:54,311 INFO L225 Difference]: With dead ends: 657 [2018-01-31 08:48:54,311 INFO L226 Difference]: Without dead ends: 442 [2018-01-31 08:48:54,312 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2063 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3436, Invalid=7484, Unknown=0, NotChecked=0, Total=10920 [2018-01-31 08:48:54,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2018-01-31 08:48:54,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 437. [2018-01-31 08:48:54,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2018-01-31 08:48:54,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 449 transitions. [2018-01-31 08:48:54,316 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 449 transitions. Word has length 624 [2018-01-31 08:48:54,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:54,316 INFO L432 AbstractCegarLoop]: Abstraction has 437 states and 449 transitions. [2018-01-31 08:48:54,316 INFO L433 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-01-31 08:48:54,316 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 449 transitions. [2018-01-31 08:48:54,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2018-01-31 08:48:54,319 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:54,319 INFO L351 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 26, 26, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 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 08:48:54,319 INFO L371 AbstractCegarLoop]: === Iteration 30 === [mainErr0AssertViolation]=== [2018-01-31 08:48:54,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1690176189, now seen corresponding path program 26 times [2018-01-31 08:48:54,319 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:54,319 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:54,320 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:54,320 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:48:54,320 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:54,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:54,335 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:55,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6378 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 3726 trivial. 0 not checked. [2018-01-31 08:48:55,788 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:55,789 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 08:48:55,793 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:48:55,808 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:55,848 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:48:55,856 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:48:55,860 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:56,032 INFO L134 CoverageAnalysis]: Checked inductivity of 6378 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 3726 trivial. 0 not checked. [2018-01-31 08:48:56,049 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:48:56,049 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 57 [2018-01-31 08:48:56,050 INFO L409 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-01-31 08:48:56,050 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-01-31 08:48:56,050 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=840, Invalid=2352, Unknown=0, NotChecked=0, Total=3192 [2018-01-31 08:48:56,051 INFO L87 Difference]: Start difference. First operand 437 states and 449 transitions. Second operand 57 states. [2018-01-31 08:48:57,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:48:57,075 INFO L93 Difference]: Finished difference Result 665 states and 689 transitions. [2018-01-31 08:48:57,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-01-31 08:48:57,075 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 632 [2018-01-31 08:48:57,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:48:57,076 INFO L225 Difference]: With dead ends: 665 [2018-01-31 08:48:57,076 INFO L226 Difference]: Without dead ends: 450 [2018-01-31 08:48:57,077 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 738 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2224 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3703, Invalid=8069, Unknown=0, NotChecked=0, Total=11772 [2018-01-31 08:48:57,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2018-01-31 08:48:57,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 445. [2018-01-31 08:48:57,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2018-01-31 08:48:57,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 457 transitions. [2018-01-31 08:48:57,081 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 457 transitions. Word has length 632 [2018-01-31 08:48:57,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:48:57,081 INFO L432 AbstractCegarLoop]: Abstraction has 445 states and 457 transitions. [2018-01-31 08:48:57,081 INFO L433 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-01-31 08:48:57,081 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 457 transitions. [2018-01-31 08:48:57,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2018-01-31 08:48:57,084 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:48:57,084 INFO L351 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 27, 27, 27, 27, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 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 08:48:57,084 INFO L371 AbstractCegarLoop]: === Iteration 31 === [mainErr0AssertViolation]=== [2018-01-31 08:48:57,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1727996628, now seen corresponding path program 27 times [2018-01-31 08:48:57,084 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:48:57,084 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:48:57,085 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:57,085 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:48:57,085 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:48:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:48:57,100 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:48:58,660 INFO L134 CoverageAnalysis]: Checked inductivity of 6588 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 3726 trivial. 0 not checked. [2018-01-31 08:48:58,660 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:48:58,660 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 08:48:58,665 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:48:58,682 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:58,686 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:58,691 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:58,699 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:58,712 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:58,729 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:58,751 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:58,827 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:58,897 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:48:58,899 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:48:58,903 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:48:59,373 INFO L134 CoverageAnalysis]: Checked inductivity of 6588 backedges. 1610 proven. 352 refuted. 0 times theorem prover too weak. 4626 trivial. 0 not checked. [2018-01-31 08:48:59,391 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:48:59,391 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 19] total 74 [2018-01-31 08:48:59,392 INFO L409 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-01-31 08:48:59,392 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-01-31 08:48:59,392 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=938, Invalid=4464, Unknown=0, NotChecked=0, Total=5402 [2018-01-31 08:48:59,393 INFO L87 Difference]: Start difference. First operand 445 states and 457 transitions. Second operand 74 states. [2018-01-31 08:49:00,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:49:00,984 INFO L93 Difference]: Finished difference Result 698 states and 728 transitions. [2018-01-31 08:49:00,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-01-31 08:49:00,985 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 640 [2018-01-31 08:49:00,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:49:00,986 INFO L225 Difference]: With dead ends: 698 [2018-01-31 08:49:00,986 INFO L226 Difference]: Without dead ends: 483 [2018-01-31 08:49:00,987 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 624 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4074 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4320, Invalid=16272, Unknown=0, NotChecked=0, Total=20592 [2018-01-31 08:49:00,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2018-01-31 08:49:00,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 467. [2018-01-31 08:49:00,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2018-01-31 08:49:00,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 480 transitions. [2018-01-31 08:49:00,991 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 480 transitions. Word has length 640 [2018-01-31 08:49:00,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:49:00,991 INFO L432 AbstractCegarLoop]: Abstraction has 467 states and 480 transitions. [2018-01-31 08:49:00,991 INFO L433 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-01-31 08:49:00,991 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 480 transitions. [2018-01-31 08:49:00,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 685 [2018-01-31 08:49:00,994 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:49:00,994 INFO L351 BasicCegarLoop]: trace histogram [30, 29, 28, 28, 28, 28, 28, 28, 28, 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 08:49:00,994 INFO L371 AbstractCegarLoop]: === Iteration 32 === [mainErr0AssertViolation]=== [2018-01-31 08:49:00,994 INFO L82 PathProgramCache]: Analyzing trace with hash 723570343, now seen corresponding path program 28 times [2018-01-31 08:49:00,994 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:49:00,994 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:49:00,995 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:49:00,995 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:49:00,995 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:49:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:49:01,011 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:49:02,842 INFO L134 CoverageAnalysis]: Checked inductivity of 7724 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 4644 trivial. 0 not checked. [2018-01-31 08:49:02,842 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:49:02,842 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 08:49:02,847 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:49:03,438 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:49:03,444 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:49:03,629 INFO L134 CoverageAnalysis]: Checked inductivity of 7724 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 4644 trivial. 0 not checked. [2018-01-31 08:49:03,650 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:49:03,650 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 61 [2018-01-31 08:49:03,650 INFO L409 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-01-31 08:49:03,651 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-01-31 08:49:03,651 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2018-01-31 08:49:03,651 INFO L87 Difference]: Start difference. First operand 467 states and 480 transitions. Second operand 61 states. [2018-01-31 08:49:04,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:49:04,591 INFO L93 Difference]: Finished difference Result 709 states and 735 transitions. [2018-01-31 08:49:04,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-01-31 08:49:04,592 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 684 [2018-01-31 08:49:04,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:49:04,593 INFO L225 Difference]: With dead ends: 709 [2018-01-31 08:49:04,593 INFO L226 Difference]: Without dead ends: 480 [2018-01-31 08:49:04,594 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 798 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2564 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=4267, Invalid=9305, Unknown=0, NotChecked=0, Total=13572 [2018-01-31 08:49:04,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2018-01-31 08:49:04,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 475. [2018-01-31 08:49:04,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2018-01-31 08:49:04,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 488 transitions. [2018-01-31 08:49:04,599 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 488 transitions. Word has length 684 [2018-01-31 08:49:04,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:49:04,599 INFO L432 AbstractCegarLoop]: Abstraction has 475 states and 488 transitions. [2018-01-31 08:49:04,599 INFO L433 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-01-31 08:49:04,599 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 488 transitions. [2018-01-31 08:49:04,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2018-01-31 08:49:04,602 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:49:04,603 INFO L351 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 29, 29, 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 08:49:04,603 INFO L371 AbstractCegarLoop]: === Iteration 33 === [mainErr0AssertViolation]=== [2018-01-31 08:49:04,603 INFO L82 PathProgramCache]: Analyzing trace with hash -428489712, now seen corresponding path program 29 times [2018-01-31 08:49:04,603 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:49:04,603 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:49:04,604 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:49:04,604 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:49:04,604 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:49:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:49:04,622 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:49:06,879 INFO L134 CoverageAnalysis]: Checked inductivity of 7950 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 4644 trivial. 0 not checked. [2018-01-31 08:49:06,879 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:49:06,879 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 08:49:06,884 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:49:06,899 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:06,900 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:06,901 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:06,902 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:06,904 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:06,906 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:06,908 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:06,910 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:06,913 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:06,916 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:06,919 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:06,925 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:06,932 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:06,940 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:06,946 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:06,964 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:06,971 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:07,000 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:07,017 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:07,045 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:07,087 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:07,105 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:07,597 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:07,918 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:08,237 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:09,397 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:11,442 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:13,984 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:13,987 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:49:13,998 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:49:14,457 INFO L134 CoverageAnalysis]: Checked inductivity of 7950 backedges. 2030 proven. 450 refuted. 0 times theorem prover too weak. 5470 trivial. 0 not checked. [2018-01-31 08:49:14,480 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:49:14,480 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 21] total 80 [2018-01-31 08:49:14,481 INFO L409 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-01-31 08:49:14,481 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-01-31 08:49:14,481 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1079, Invalid=5241, Unknown=0, NotChecked=0, Total=6320 [2018-01-31 08:49:14,481 INFO L87 Difference]: Start difference. First operand 475 states and 488 transitions. Second operand 80 states. [2018-01-31 08:49:16,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:49:16,201 INFO L93 Difference]: Finished difference Result 742 states and 774 transitions. [2018-01-31 08:49:16,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-01-31 08:49:16,202 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 692 [2018-01-31 08:49:16,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:49:16,203 INFO L225 Difference]: With dead ends: 742 [2018-01-31 08:49:16,203 INFO L226 Difference]: Without dead ends: 513 [2018-01-31 08:49:16,204 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 674 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4817 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4995, Invalid=19185, Unknown=0, NotChecked=0, Total=24180 [2018-01-31 08:49:16,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2018-01-31 08:49:16,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 497. [2018-01-31 08:49:16,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2018-01-31 08:49:16,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 511 transitions. [2018-01-31 08:49:16,209 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 511 transitions. Word has length 692 [2018-01-31 08:49:16,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:49:16,209 INFO L432 AbstractCegarLoop]: Abstraction has 497 states and 511 transitions. [2018-01-31 08:49:16,209 INFO L433 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-01-31 08:49:16,209 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 511 transitions. [2018-01-31 08:49:16,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2018-01-31 08:49:16,212 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:49:16,212 INFO L351 BasicCegarLoop]: trace histogram [33, 31, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 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 08:49:16,212 INFO L371 AbstractCegarLoop]: === Iteration 34 === [mainErr0AssertViolation]=== [2018-01-31 08:49:16,212 INFO L82 PathProgramCache]: Analyzing trace with hash -700915445, now seen corresponding path program 30 times [2018-01-31 08:49:16,212 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:49:16,212 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:49:16,213 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:49:16,213 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:49:16,213 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:49:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:49:16,229 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:49:18,255 INFO L134 CoverageAnalysis]: Checked inductivity of 9210 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 5670 trivial. 0 not checked. [2018-01-31 08:49:18,255 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:49:18,255 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 08:49:18,260 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:49:18,277 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:49:18,279 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:49:18,282 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:49:18,285 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:49:18,291 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:49:18,305 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:49:18,318 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:49:18,359 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:49:18,386 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:49:18,411 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:49:18,515 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:49:18,573 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:49:18,787 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:49:18,963 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:49:19,181 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:49:19,877 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:49:20,697 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:49:21,719 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:49:22,752 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:49:22,755 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:49:22,763 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:49:23,180 INFO L134 CoverageAnalysis]: Checked inductivity of 9210 backedges. 2500 proven. 240 refuted. 0 times theorem prover too weak. 6470 trivial. 0 not checked. [2018-01-31 08:49:23,199 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:49:23,199 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 19] total 80 [2018-01-31 08:49:23,199 INFO L409 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-01-31 08:49:23,200 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-01-31 08:49:23,200 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1121, Invalid=5199, Unknown=0, NotChecked=0, Total=6320 [2018-01-31 08:49:23,200 INFO L87 Difference]: Start difference. First operand 497 states and 511 transitions. Second operand 80 states. [2018-01-31 08:49:25,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:49:25,011 INFO L93 Difference]: Finished difference Result 766 states and 795 transitions. [2018-01-31 08:49:25,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-01-31 08:49:25,012 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 736 [2018-01-31 08:49:25,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:49:25,013 INFO L225 Difference]: With dead ends: 766 [2018-01-31 08:49:25,013 INFO L226 Difference]: Without dead ends: 523 [2018-01-31 08:49:25,016 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 720 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4779 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=5205, Invalid=18975, Unknown=0, NotChecked=0, Total=24180 [2018-01-31 08:49:25,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2018-01-31 08:49:25,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 513. [2018-01-31 08:49:25,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2018-01-31 08:49:25,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 527 transitions. [2018-01-31 08:49:25,020 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 527 transitions. Word has length 736 [2018-01-31 08:49:25,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:49:25,020 INFO L432 AbstractCegarLoop]: Abstraction has 513 states and 527 transitions. [2018-01-31 08:49:25,020 INFO L433 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-01-31 08:49:25,020 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 527 transitions. [2018-01-31 08:49:25,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2018-01-31 08:49:25,023 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:49:25,023 INFO L351 BasicCegarLoop]: trace histogram [33, 32, 31, 31, 31, 31, 31, 31, 31, 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 08:49:25,024 INFO L371 AbstractCegarLoop]: === Iteration 35 === [mainErr0AssertViolation]=== [2018-01-31 08:49:25,024 INFO L82 PathProgramCache]: Analyzing trace with hash -2100389909, now seen corresponding path program 31 times [2018-01-31 08:49:25,024 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:49:25,024 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:49:25,024 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:49:25,024 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:49:25,024 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:49:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:49:25,044 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:49:27,114 INFO L134 CoverageAnalysis]: Checked inductivity of 9518 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 5736 trivial. 0 not checked. [2018-01-31 08:49:27,115 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:49:27,115 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 08:49:27,119 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:49:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:49:27,188 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:49:27,375 INFO L134 CoverageAnalysis]: Checked inductivity of 9518 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 5736 trivial. 0 not checked. [2018-01-31 08:49:27,394 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:49:27,394 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 67 [2018-01-31 08:49:27,395 INFO L409 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-01-31 08:49:27,395 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-01-31 08:49:27,395 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=3267, Unknown=0, NotChecked=0, Total=4422 [2018-01-31 08:49:27,395 INFO L87 Difference]: Start difference. First operand 513 states and 527 transitions. Second operand 67 states. [2018-01-31 08:49:28,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:49:28,508 INFO L93 Difference]: Finished difference Result 777 states and 805 transitions. [2018-01-31 08:49:28,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-01-31 08:49:28,509 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 752 [2018-01-31 08:49:28,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:49:28,510 INFO L225 Difference]: With dead ends: 777 [2018-01-31 08:49:28,510 INFO L226 Difference]: Without dead ends: 526 [2018-01-31 08:49:28,511 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 878 GetRequests, 751 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3119 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=5188, Invalid=11324, Unknown=0, NotChecked=0, Total=16512 [2018-01-31 08:49:28,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2018-01-31 08:49:28,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 521. [2018-01-31 08:49:28,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2018-01-31 08:49:28,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 535 transitions. [2018-01-31 08:49:28,521 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 535 transitions. Word has length 752 [2018-01-31 08:49:28,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:49:28,521 INFO L432 AbstractCegarLoop]: Abstraction has 521 states and 535 transitions. [2018-01-31 08:49:28,522 INFO L433 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-01-31 08:49:28,522 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 535 transitions. [2018-01-31 08:49:28,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2018-01-31 08:49:28,525 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:49:28,525 INFO L351 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 32, 32, 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 08:49:28,525 INFO L371 AbstractCegarLoop]: === Iteration 36 === [mainErr0AssertViolation]=== [2018-01-31 08:49:28,525 INFO L82 PathProgramCache]: Analyzing trace with hash -588453676, now seen corresponding path program 32 times [2018-01-31 08:49:28,525 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:49:28,525 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:49:28,526 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:49:28,526 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:49:28,526 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:49:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:49:28,543 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:49:30,824 INFO L134 CoverageAnalysis]: Checked inductivity of 9768 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 5736 trivial. 0 not checked. [2018-01-31 08:49:30,824 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:49:30,824 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 08:49:30,829 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:49:30,846 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:30,887 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:30,895 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:49:30,899 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:49:31,082 INFO L134 CoverageAnalysis]: Checked inductivity of 9768 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 5736 trivial. 0 not checked. [2018-01-31 08:49:31,100 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:49:31,100 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 69 [2018-01-31 08:49:31,100 INFO L409 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-01-31 08:49:31,101 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-01-31 08:49:31,101 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1224, Invalid=3468, Unknown=0, NotChecked=0, Total=4692 [2018-01-31 08:49:31,101 INFO L87 Difference]: Start difference. First operand 521 states and 535 transitions. Second operand 69 states. [2018-01-31 08:49:32,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:49:32,289 INFO L93 Difference]: Finished difference Result 785 states and 813 transitions. [2018-01-31 08:49:32,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-01-31 08:49:32,289 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 760 [2018-01-31 08:49:32,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:49:32,290 INFO L225 Difference]: With dead ends: 785 [2018-01-31 08:49:32,290 INFO L226 Difference]: Without dead ends: 534 [2018-01-31 08:49:32,291 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 759 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3316 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=5515, Invalid=12041, Unknown=0, NotChecked=0, Total=17556 [2018-01-31 08:49:32,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2018-01-31 08:49:32,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 529. [2018-01-31 08:49:32,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 529 states. [2018-01-31 08:49:32,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 543 transitions. [2018-01-31 08:49:32,295 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 543 transitions. Word has length 760 [2018-01-31 08:49:32,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:49:32,295 INFO L432 AbstractCegarLoop]: Abstraction has 529 states and 543 transitions. [2018-01-31 08:49:32,296 INFO L433 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-01-31 08:49:32,296 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 543 transitions. [2018-01-31 08:49:32,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2018-01-31 08:49:32,299 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:49:32,299 INFO L351 BasicCegarLoop]: trace histogram [34, 33, 33, 33, 33, 33, 33, 33, 33, 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 08:49:32,299 INFO L371 AbstractCegarLoop]: === Iteration 37 === [mainErr0AssertViolation]=== [2018-01-31 08:49:32,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1912323907, now seen corresponding path program 33 times [2018-01-31 08:49:32,299 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:49:32,299 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:49:32,300 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:49:32,300 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:49:32,300 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:49:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:49:32,318 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:49:34,693 INFO L134 CoverageAnalysis]: Checked inductivity of 10026 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 5736 trivial. 0 not checked. [2018-01-31 08:49:34,694 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:49:34,694 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 08:49:34,711 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:49:34,729 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:49:34,733 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:49:34,739 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:49:34,746 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:49:34,761 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:49:34,798 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:49:34,834 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:49:34,942 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:49:34,980 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:49:35,008 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:49:35,032 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:49:35,034 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:49:35,039 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:49:35,570 INFO L134 CoverageAnalysis]: Checked inductivity of 10026 backedges. 2490 proven. 560 refuted. 0 times theorem prover too weak. 6976 trivial. 0 not checked. [2018-01-31 08:49:35,588 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:49:35,588 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 23] total 90 [2018-01-31 08:49:35,589 INFO L409 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-01-31 08:49:35,589 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-01-31 08:49:35,589 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1366, Invalid=6644, Unknown=0, NotChecked=0, Total=8010 [2018-01-31 08:49:35,590 INFO L87 Difference]: Start difference. First operand 529 states and 543 transitions. Second operand 90 states. [2018-01-31 08:49:37,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:49:37,610 INFO L93 Difference]: Finished difference Result 818 states and 852 transitions. [2018-01-31 08:49:37,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-01-31 08:49:37,610 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 768 [2018-01-31 08:49:37,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:49:37,612 INFO L225 Difference]: With dead ends: 818 [2018-01-31 08:49:37,612 INFO L226 Difference]: Without dead ends: 567 [2018-01-31 08:49:37,614 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 922 GetRequests, 748 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 08:49:37,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2018-01-31 08:49:37,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 551. [2018-01-31 08:49:37,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2018-01-31 08:49:37,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 566 transitions. [2018-01-31 08:49:37,621 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 566 transitions. Word has length 768 [2018-01-31 08:49:37,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:49:37,621 INFO L432 AbstractCegarLoop]: Abstraction has 551 states and 566 transitions. [2018-01-31 08:49:37,621 INFO L433 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-01-31 08:49:37,621 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 566 transitions. [2018-01-31 08:49:37,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2018-01-31 08:49:37,626 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:49:37,627 INFO L351 BasicCegarLoop]: trace histogram [36, 35, 34, 34, 34, 34, 34, 34, 34, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 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 08:49:37,627 INFO L371 AbstractCegarLoop]: === Iteration 38 === [mainErr0AssertViolation]=== [2018-01-31 08:49:37,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1142350520, now seen corresponding path program 34 times [2018-01-31 08:49:37,627 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:49:37,627 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:49:37,627 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:49:37,627 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:49:37,628 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:49:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:49:37,650 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:49:40,191 INFO L134 CoverageAnalysis]: Checked inductivity of 11426 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 6870 trivial. 0 not checked. [2018-01-31 08:49:40,191 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:49:40,191 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 08:49:40,196 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:49:41,466 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:49:41,473 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:49:41,677 INFO L134 CoverageAnalysis]: Checked inductivity of 11426 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 6870 trivial. 0 not checked. [2018-01-31 08:49:41,696 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:49:41,697 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 73 [2018-01-31 08:49:41,697 INFO L409 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-01-31 08:49:41,697 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-01-31 08:49:41,698 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1368, Invalid=3888, Unknown=0, NotChecked=0, Total=5256 [2018-01-31 08:49:41,698 INFO L87 Difference]: Start difference. First operand 551 states and 566 transitions. Second operand 73 states. [2018-01-31 08:49:42,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:49:42,999 INFO L93 Difference]: Finished difference Result 829 states and 859 transitions. [2018-01-31 08:49:43,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-01-31 08:49:43,000 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 812 [2018-01-31 08:49:43,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:49:43,001 INFO L225 Difference]: With dead ends: 829 [2018-01-31 08:49:43,001 INFO L226 Difference]: Without dead ends: 564 [2018-01-31 08:49:43,006 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 950 GetRequests, 811 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 08:49:43,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2018-01-31 08:49:43,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 559. [2018-01-31 08:49:43,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2018-01-31 08:49:43,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 574 transitions. [2018-01-31 08:49:43,010 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 574 transitions. Word has length 812 [2018-01-31 08:49:43,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:49:43,010 INFO L432 AbstractCegarLoop]: Abstraction has 559 states and 574 transitions. [2018-01-31 08:49:43,010 INFO L433 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-01-31 08:49:43,010 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 574 transitions. [2018-01-31 08:49:43,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2018-01-31 08:49:43,017 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:49:43,017 INFO L351 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 35, 35, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 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 08:49:43,017 INFO L371 AbstractCegarLoop]: === Iteration 39 === [mainErr0AssertViolation]=== [2018-01-31 08:49:43,018 INFO L82 PathProgramCache]: Analyzing trace with hash -462665695, now seen corresponding path program 35 times [2018-01-31 08:49:43,018 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:49:43,018 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:49:43,018 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:49:43,018 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:49:43,018 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:49:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:49:43,037 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:49:45,703 INFO L134 CoverageAnalysis]: Checked inductivity of 11700 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 6870 trivial. 0 not checked. [2018-01-31 08:49:45,703 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:49:45,703 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 08:49:45,708 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:49:45,725 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:45,726 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:45,727 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:45,729 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:45,730 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:45,732 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:45,735 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:45,738 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:45,740 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:45,743 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:45,753 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:45,761 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:45,776 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:45,780 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:45,791 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:45,823 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:45,847 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:45,859 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:45,885 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:45,915 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:45,936 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:45,950 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:45,974 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:46,018 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:46,066 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:46,132 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:46,162 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:47,294 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:47,850 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:48,081 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:48,657 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:52,638 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:49:55,926 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:50:07,947 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:50:07,954 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:50:07,968 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:50:08,615 INFO L134 CoverageAnalysis]: Checked inductivity of 11700 backedges. 3006 proven. 682 refuted. 0 times theorem prover too weak. 8012 trivial. 0 not checked. [2018-01-31 08:50:08,640 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:50:08,641 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 25] total 96 [2018-01-31 08:50:08,641 INFO L409 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-01-31 08:50:08,642 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-01-31 08:50:08,642 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1535, Invalid=7585, Unknown=0, NotChecked=0, Total=9120 [2018-01-31 08:50:08,642 INFO L87 Difference]: Start difference. First operand 559 states and 574 transitions. Second operand 96 states. [2018-01-31 08:50:11,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:50:11,034 INFO L93 Difference]: Finished difference Result 862 states and 898 transitions. [2018-01-31 08:50:11,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-01-31 08:50:11,034 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 820 [2018-01-31 08:50:11,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:50:11,035 INFO L225 Difference]: With dead ends: 862 [2018-01-31 08:50:11,035 INFO L226 Difference]: Without dead ends: 597 [2018-01-31 08:50:11,038 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 984 GetRequests, 798 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7073 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=7195, Invalid=27961, Unknown=0, NotChecked=0, Total=35156 [2018-01-31 08:50:11,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2018-01-31 08:50:11,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 581. [2018-01-31 08:50:11,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-01-31 08:50:11,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 597 transitions. [2018-01-31 08:50:11,042 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 597 transitions. Word has length 820 [2018-01-31 08:50:11,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:50:11,042 INFO L432 AbstractCegarLoop]: Abstraction has 581 states and 597 transitions. [2018-01-31 08:50:11,042 INFO L433 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-01-31 08:50:11,042 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 597 transitions. [2018-01-31 08:50:11,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2018-01-31 08:50:11,046 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:50:11,046 INFO L351 BasicCegarLoop]: trace histogram [39, 37, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 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 08:50:11,046 INFO L371 AbstractCegarLoop]: === Iteration 40 === [mainErr0AssertViolation]=== [2018-01-31 08:50:11,046 INFO L82 PathProgramCache]: Analyzing trace with hash -2101979748, now seen corresponding path program 36 times [2018-01-31 08:50:11,046 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:50:11,046 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:50:11,047 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:50:11,047 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:50:11,047 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:50:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:50:11,067 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:50:13,937 INFO L134 CoverageAnalysis]: Checked inductivity of 13224 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 8112 trivial. 0 not checked. [2018-01-31 08:50:13,937 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:50:13,937 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 08:50:13,942 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:50:13,962 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:50:13,963 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:50:13,967 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:50:13,969 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:50:13,975 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:50:14,001 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:50:14,031 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:50:14,071 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:50:14,085 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:50:14,351 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:50:14,551 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:50:14,715 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:50:14,754 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:50:14,861 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:50:15,402 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:50:15,891 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:50:16,246 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:50:16,818 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:50:18,363 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:50:19,646 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:50:20,737 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:50:20,740 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:50:20,749 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:50:21,339 INFO L134 CoverageAnalysis]: Checked inductivity of 13224 backedges. 3572 proven. 306 refuted. 0 times theorem prover too weak. 9346 trivial. 0 not checked. [2018-01-31 08:50:21,359 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:50:21,359 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 21] total 94 [2018-01-31 08:50:21,360 INFO L409 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-01-31 08:50:21,360 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-01-31 08:50:21,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1562, Invalid=7180, Unknown=0, NotChecked=0, Total=8742 [2018-01-31 08:50:21,360 INFO L87 Difference]: Start difference. First operand 581 states and 597 transitions. Second operand 94 states. [2018-01-31 08:50:23,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:50:23,885 INFO L93 Difference]: Finished difference Result 886 states and 919 transitions. [2018-01-31 08:50:23,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-01-31 08:50:23,886 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 864 [2018-01-31 08:50:23,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:50:23,887 INFO L225 Difference]: With dead ends: 886 [2018-01-31 08:50:23,887 INFO L226 Difference]: Without dead ends: 607 [2018-01-31 08:50:23,890 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 1028 GetRequests, 846 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6686 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=7340, Invalid=26332, Unknown=0, NotChecked=0, Total=33672 [2018-01-31 08:50:23,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2018-01-31 08:50:23,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 597. [2018-01-31 08:50:23,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2018-01-31 08:50:23,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 613 transitions. [2018-01-31 08:50:23,894 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 613 transitions. Word has length 864 [2018-01-31 08:50:23,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:50:23,895 INFO L432 AbstractCegarLoop]: Abstraction has 597 states and 613 transitions. [2018-01-31 08:50:23,895 INFO L433 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-01-31 08:50:23,895 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 613 transitions. [2018-01-31 08:50:23,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 881 [2018-01-31 08:50:23,898 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:50:23,899 INFO L351 BasicCegarLoop]: trace histogram [39, 38, 37, 37, 37, 37, 37, 37, 37, 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 08:50:23,899 INFO L371 AbstractCegarLoop]: === Iteration 41 === [mainErr0AssertViolation]=== [2018-01-31 08:50:23,899 INFO L82 PathProgramCache]: Analyzing trace with hash -353400196, now seen corresponding path program 37 times [2018-01-31 08:50:23,899 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:50:23,899 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:50:23,900 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:50:23,900 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:50:23,900 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:50:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:50:23,920 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:50:27,085 INFO L134 CoverageAnalysis]: Checked inductivity of 13588 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 8186 trivial. 0 not checked. [2018-01-31 08:50:27,085 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:50:27,085 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:50:27,095 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:50:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:50:27,170 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:50:27,408 INFO L134 CoverageAnalysis]: Checked inductivity of 13588 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 8186 trivial. 0 not checked. [2018-01-31 08:50:27,427 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:50:27,427 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 79 [2018-01-31 08:50:27,427 INFO L409 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-01-31 08:50:27,428 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-01-31 08:50:27,428 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1599, Invalid=4563, Unknown=0, NotChecked=0, Total=6162 [2018-01-31 08:50:27,428 INFO L87 Difference]: Start difference. First operand 597 states and 613 transitions. Second operand 79 states. [2018-01-31 08:50:29,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:50:29,124 INFO L93 Difference]: Finished difference Result 897 states and 929 transitions. [2018-01-31 08:50:29,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-01-31 08:50:29,142 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 880 [2018-01-31 08:50:29,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:50:29,143 INFO L225 Difference]: With dead ends: 897 [2018-01-31 08:50:29,143 INFO L226 Difference]: Without dead ends: 610 [2018-01-31 08:50:29,144 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 1030 GetRequests, 879 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4391 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=7300, Invalid=15956, Unknown=0, NotChecked=0, Total=23256 [2018-01-31 08:50:29,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2018-01-31 08:50:29,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 605. [2018-01-31 08:50:29,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2018-01-31 08:50:29,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 621 transitions. [2018-01-31 08:50:29,148 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 621 transitions. Word has length 880 [2018-01-31 08:50:29,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:50:29,148 INFO L432 AbstractCegarLoop]: Abstraction has 605 states and 621 transitions. [2018-01-31 08:50:29,148 INFO L433 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-01-31 08:50:29,148 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 621 transitions. [2018-01-31 08:50:29,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2018-01-31 08:50:29,154 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:50:29,154 INFO L351 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 38, 38, 38, 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 08:50:29,154 INFO L371 AbstractCegarLoop]: === Iteration 42 === [mainErr0AssertViolation]=== [2018-01-31 08:50:29,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1490439013, now seen corresponding path program 38 times [2018-01-31 08:50:29,154 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:50:29,154 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:50:29,155 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:50:29,155 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:50:29,155 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:50:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:50:29,189 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:50:32,359 INFO L134 CoverageAnalysis]: Checked inductivity of 13886 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 8186 trivial. 0 not checked. [2018-01-31 08:50:32,360 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:50:32,360 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:50:32,364 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:50:32,385 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:50:32,434 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:50:32,444 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:50:32,449 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:50:32,713 INFO L134 CoverageAnalysis]: Checked inductivity of 13886 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 8186 trivial. 0 not checked. [2018-01-31 08:50:32,734 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:50:32,734 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 81 [2018-01-31 08:50:32,735 INFO L409 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-01-31 08:50:32,735 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-01-31 08:50:32,735 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1680, Invalid=4800, Unknown=0, NotChecked=0, Total=6480 [2018-01-31 08:50:32,735 INFO L87 Difference]: Start difference. First operand 605 states and 621 transitions. Second operand 81 states. [2018-01-31 08:50:35,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:50:35,100 INFO L93 Difference]: Finished difference Result 905 states and 937 transitions. [2018-01-31 08:50:35,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-01-31 08:50:35,107 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 888 [2018-01-31 08:50:35,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:50:35,109 INFO L225 Difference]: With dead ends: 905 [2018-01-31 08:50:35,109 INFO L226 Difference]: Without dead ends: 618 [2018-01-31 08:50:35,111 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 1042 GetRequests, 887 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4624 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=7687, Invalid=16805, Unknown=0, NotChecked=0, Total=24492 [2018-01-31 08:50:35,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2018-01-31 08:50:35,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 613. [2018-01-31 08:50:35,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2018-01-31 08:50:35,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 629 transitions. [2018-01-31 08:50:35,115 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 629 transitions. Word has length 888 [2018-01-31 08:50:35,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:50:35,115 INFO L432 AbstractCegarLoop]: Abstraction has 613 states and 629 transitions. [2018-01-31 08:50:35,115 INFO L433 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-01-31 08:50:35,115 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 629 transitions. [2018-01-31 08:50:35,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 897 [2018-01-31 08:50:35,120 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:50:35,120 INFO L351 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 39, 39, 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 08:50:35,120 INFO L371 AbstractCegarLoop]: === Iteration 43 === [mainErr0AssertViolation]=== [2018-01-31 08:50:35,120 INFO L82 PathProgramCache]: Analyzing trace with hash -968486066, now seen corresponding path program 39 times [2018-01-31 08:50:35,120 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:50:35,120 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:50:35,123 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:50:35,123 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:50:35,123 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:50:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:50:35,146 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:50:38,604 INFO L134 CoverageAnalysis]: Checked inductivity of 14192 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 8186 trivial. 0 not checked. [2018-01-31 08:50:38,605 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:50:38,605 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:50:38,609 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:50:38,629 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:50:38,647 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:50:38,657 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:50:38,671 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:50:38,681 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:50:38,705 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:50:38,746 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:50:38,771 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:50:38,923 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:50:38,997 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:50:39,092 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:50:39,124 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:50:39,127 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:50:39,133 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:50:40,243 INFO L134 CoverageAnalysis]: Checked inductivity of 14192 backedges. 3878 proven. 380 refuted. 0 times theorem prover too weak. 9934 trivial. 0 not checked. [2018-01-31 08:50:40,261 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:50:40,261 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 26] total 104 [2018-01-31 08:50:40,262 INFO L409 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-01-31 08:50:40,262 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-01-31 08:50:40,263 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1905, Invalid=8807, Unknown=0, NotChecked=0, Total=10712 [2018-01-31 08:50:40,263 INFO L87 Difference]: Start difference. First operand 613 states and 629 transitions. Second operand 104 states. Received shutdown request... [2018-01-31 08:50:42,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-01-31 08:50:42,304 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-31 08:50:42,307 WARN L185 ceAbstractionStarter]: Timeout [2018-01-31 08:50:42,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 08:50:42 BoogieIcfgContainer [2018-01-31 08:50:42,310 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-31 08:50:42,311 INFO L168 Benchmark]: Toolchain (without parser) took 153146.10 ms. Allocated memory was 148.4 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 114.6 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 587.4 MB. Max. memory is 5.3 GB. [2018-01-31 08:50:42,311 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 148.4 MB. Free memory is still 119.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 08:50:42,312 INFO L168 Benchmark]: CACSL2BoogieTranslator took 127.11 ms. Allocated memory is still 148.4 MB. Free memory was 114.4 MB in the beginning and 105.7 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 5.3 GB. [2018-01-31 08:50:42,312 INFO L168 Benchmark]: Boogie Preprocessor took 22.34 ms. Allocated memory is still 148.4 MB. Free memory was 105.7 MB in the beginning and 104.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 5.3 GB. [2018-01-31 08:50:42,312 INFO L168 Benchmark]: RCFGBuilder took 433.34 ms. Allocated memory is still 148.4 MB. Free memory was 103.9 MB in the beginning and 84.4 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 5.3 GB. [2018-01-31 08:50:42,312 INFO L168 Benchmark]: TraceAbstraction took 152561.09 ms. Allocated memory was 148.4 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 84.2 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 556.9 MB. Max. memory is 5.3 GB. [2018-01-31 08:50:42,313 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 148.4 MB. Free memory is still 119.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 127.11 ms. Allocated memory is still 148.4 MB. Free memory was 114.4 MB in the beginning and 105.7 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 22.34 ms. Allocated memory is still 148.4 MB. Free memory was 105.7 MB in the beginning and 104.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 433.34 ms. Allocated memory is still 148.4 MB. Free memory was 103.9 MB in the beginning and 84.4 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 5.3 GB. * TraceAbstraction took 152561.09 ms. Allocated memory was 148.4 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 84.2 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 556.9 MB. 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 constructing difference of abstraction (613states) and interpolant automaton (currently 114 states, 104 states before enhancement), while PredicateComparison was comparing new predicate (quantifier-free) to 178 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 84 locations, 1 error locations. TIMEOUT Result, 152.5s OverallTime, 43 OverallIterations, 40 TraceHistogramMax, 38.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3205 SDtfs, 5808 SDslu, 99022 SDs, 0 SdLazy, 12334 SolverSat, 1226 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24516 GetRequests, 20829 SyntacticMatches, 1 SemanticMatches, 3685 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88892 ImplicationChecksByTransitivity, 56.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=613occurred in iteration=42, 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, 42 MinimizatonAttempts, 377 StatesRemovedByMinimization, 41 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 50.7s SatisfiabilityAnalysisTime, 57.5s InterpolantComputationTime, 42315 NumberOfCodeBlocks, 39993 NumberOfCodeBlocksAsserted, 333 NumberOfCheckSat, 42231 ConstructedInterpolants, 0 QuantifiedInterpolants, 39848619 SizeOfPredicates, 1081 NumberOfNonLiveVariables, 27969 ConjunctsInSsa, 1186 ConjunctsInUnsatCore, 84 InterpolantComputations, 4 PerfectInterpolantSequences, 299127/424005 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/max40_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-31_08-50-42-321.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/max40_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-31_08-50-42-321.csv Completed graceful shutdown