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/sum10_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-5f7ec6e-m [2018-01-31 09:26:47,567 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 09:26:47,568 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 09:26:47,577 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 09:26:47,577 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 09:26:47,578 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 09:26:47,579 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 09:26:47,580 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 09:26:47,581 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 09:26:47,581 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 09:26:47,582 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 09:26:47,582 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 09:26:47,583 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 09:26:47,583 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 09:26:47,584 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 09:26:47,585 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 09:26:47,586 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 09:26:47,587 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 09:26:47,587 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 09:26:47,588 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 09:26:47,589 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-31 09:26:47,590 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-31 09:26:47,590 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-31 09:26:47,590 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-31 09:26:47,591 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-31 09:26:47,591 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-31 09:26:47,591 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-31 09:26:47,592 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-31 09:26:47,592 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-31 09:26:47,592 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 09:26:47,592 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 09:26:47,592 INFO L98 SettingsManager]: Beginning loading settings from /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-31 09:26:47,597 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 09:26:47,598 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 09:26:47,598 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 09:26:47,598 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 09:26:47,598 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 09:26:47,598 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 09:26:47,598 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 09:26:47,599 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 09:26:47,599 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 09:26:47,599 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 09:26:47,599 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 09:26:47,599 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 09:26:47,599 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-31 09:26:47,599 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 09:26:47,599 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-31 09:26:47,599 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 09:26:47,600 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-31 09:26:47,600 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-31 09:26:47,600 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 09:26:47,600 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 09:26:47,600 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 09:26:47,600 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 09:26:47,600 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 09:26:47,600 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 09:26:47,600 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 09:26:47,600 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 09:26:47,600 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 09:26:47,601 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 09:26:47,601 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 09:26:47,601 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 09:26:47,601 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 09:26:47,601 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 09:26:47,601 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 09:26:47,601 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 09:26:47,619 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 09:26:47,628 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 09:26:47,630 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 09:26:47,634 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 09:26:47,634 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 09:26:47,635 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum10_true-unreach-call_true-termination.i [2018-01-31 09:26:47,696 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 09:26:47,697 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-31 09:26:47,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 09:26:47,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 09:26:47,701 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 09:26:47,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:26:47" (1/1) ... [2018-01-31 09:26:47,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d17e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:26:47, skipping insertion in model container [2018-01-31 09:26:47,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:26:47" (1/1) ... [2018-01-31 09:26:47,712 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:26:47,721 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:26:47,792 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:26:47,804 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:26:47,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:26:47 WrapperNode [2018-01-31 09:26:47,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 09:26:47,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 09:26:47,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 09:26:47,809 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 09:26:47,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:26:47" (1/1) ... [2018-01-31 09:26:47,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:26:47" (1/1) ... [2018-01-31 09:26:47,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:26:47" (1/1) ... [2018-01-31 09:26:47,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:26:47" (1/1) ... [2018-01-31 09:26:47,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:26:47" (1/1) ... [2018-01-31 09:26:47,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:26:47" (1/1) ... [2018-01-31 09:26:47,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:26:47" (1/1) ... [2018-01-31 09:26:47,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 09:26:47,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 09:26:47,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 09:26:47,829 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 09:26:47,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:26:47" (1/1) ... No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 09:26:47,866 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 09:26:47,866 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 09:26:47,866 INFO L136 BoogieDeclarations]: Found implementation of procedure sum [2018-01-31 09:26:47,866 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 09:26:47,866 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 09:26:47,866 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 09:26:47,866 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 09:26:47,866 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 09:26:47,867 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 09:26:47,867 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-31 09:26:47,867 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 09:26:47,867 INFO L128 BoogieDeclarations]: Found specification of procedure sum [2018-01-31 09:26:47,867 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 09:26:47,867 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 09:26:47,867 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 09:26:48,242 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 09:26:48,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:26:48 BoogieIcfgContainer [2018-01-31 09:26:48,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 09:26:48,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 09:26:48,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 09:26:48,245 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 09:26:48,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 09:26:47" (1/3) ... [2018-01-31 09:26:48,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2200a12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:26:48, skipping insertion in model container [2018-01-31 09:26:48,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:26:47" (2/3) ... [2018-01-31 09:26:48,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2200a12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:26:48, skipping insertion in model container [2018-01-31 09:26:48,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:26:48" (3/3) ... [2018-01-31 09:26:48,247 INFO L107 eAbstractionObserver]: Analyzing ICFG sum10_true-unreach-call_true-termination.i [2018-01-31 09:26:48,252 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 09:26:48,256 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-31 09:26:48,280 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 09:26:48,280 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 09:26:48,280 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 09:26:48,280 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 09:26:48,281 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 09:26:48,281 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 09:26:48,281 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 09:26:48,281 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 09:26:48,281 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 09:26:48,290 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2018-01-31 09:26:48,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-01-31 09:26:48,295 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:26:48,296 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:26:48,296 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolation]=== [2018-01-31 09:26:48,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1274758379, now seen corresponding path program 1 times [2018-01-31 09:26:48,300 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:26:48,300 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:26:48,331 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:48,331 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:26:48,331 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:26:48,360 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:26:48,411 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-01-31 09:26:48,413 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:26:48,413 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 09:26:48,414 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-31 09:26:48,421 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-31 09:26:48,421 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 09:26:48,422 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 2 states. [2018-01-31 09:26:48,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:26:48,438 INFO L93 Difference]: Finished difference Result 136 states and 153 transitions. [2018-01-31 09:26:48,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-31 09:26:48,439 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 67 [2018-01-31 09:26:48,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:26:48,444 INFO L225 Difference]: With dead ends: 136 [2018-01-31 09:26:48,444 INFO L226 Difference]: Without dead ends: 71 [2018-01-31 09:26:48,446 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 09:26:48,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-01-31 09:26:48,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-01-31 09:26:48,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-01-31 09:26:48,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2018-01-31 09:26:48,471 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 67 [2018-01-31 09:26:48,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:26:48,471 INFO L432 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2018-01-31 09:26:48,471 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-31 09:26:48,471 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2018-01-31 09:26:48,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-01-31 09:26:48,473 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:26:48,473 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:26:48,473 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolation]=== [2018-01-31 09:26:48,473 INFO L82 PathProgramCache]: Analyzing trace with hash -780571542, now seen corresponding path program 1 times [2018-01-31 09:26:48,473 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:26:48,473 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:26:48,474 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:48,474 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:26:48,474 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:26:48,485 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:26:48,627 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-01-31 09:26:48,627 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:26:48,627 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 09:26:48,628 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 09:26:48,628 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 09:26:48,629 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 09:26:48,629 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 3 states. [2018-01-31 09:26:48,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:26:48,714 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2018-01-31 09:26:48,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 09:26:48,716 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2018-01-31 09:26:48,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:26:48,717 INFO L225 Difference]: With dead ends: 129 [2018-01-31 09:26:48,717 INFO L226 Difference]: Without dead ends: 78 [2018-01-31 09:26:48,718 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 09:26:48,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-01-31 09:26:48,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2018-01-31 09:26:48,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-01-31 09:26:48,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2018-01-31 09:26:48,725 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 72 [2018-01-31 09:26:48,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:26:48,725 INFO L432 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2018-01-31 09:26:48,725 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 09:26:48,725 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2018-01-31 09:26:48,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-01-31 09:26:48,726 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:26:48,726 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:26:48,726 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolation]=== [2018-01-31 09:26:48,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1544788435, now seen corresponding path program 1 times [2018-01-31 09:26:48,726 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:26:48,727 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:26:48,727 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:48,728 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:26:48,728 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:26:48,738 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:26:48,827 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-01-31 09:26:48,827 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:26:48,827 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:26:48,840 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:26:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:26:48,877 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:26:48,921 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-01-31 09:26:48,938 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:26:48,938 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 09:26:48,938 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 09:26:48,938 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 09:26:48,938 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 09:26:48,939 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 6 states. [2018-01-31 09:26:49,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:26:49,122 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2018-01-31 09:26:49,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 09:26:49,123 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2018-01-31 09:26:49,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:26:49,123 INFO L225 Difference]: With dead ends: 144 [2018-01-31 09:26:49,123 INFO L226 Difference]: Without dead ends: 93 [2018-01-31 09:26:49,124 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-31 09:26:49,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-01-31 09:26:49,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2018-01-31 09:26:49,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-01-31 09:26:49,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2018-01-31 09:26:49,128 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 80 [2018-01-31 09:26:49,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:26:49,129 INFO L432 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2018-01-31 09:26:49,129 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 09:26:49,129 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2018-01-31 09:26:49,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-01-31 09:26:49,130 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:26:49,130 INFO L351 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:26:49,130 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolation]=== [2018-01-31 09:26:49,131 INFO L82 PathProgramCache]: Analyzing trace with hash 278598597, now seen corresponding path program 1 times [2018-01-31 09:26:49,131 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:26:49,131 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:26:49,131 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:49,132 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:26:49,132 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:26:49,143 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:26:49,301 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-01-31 09:26:49,302 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:26:49,302 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-01-31 09:26:49,309 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:26:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:26:49,344 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:26:49,396 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-01-31 09:26:49,412 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:26:49,412 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 09:26:49,414 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 09:26:49,414 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 09:26:49,414 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 09:26:49,414 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 6 states. [2018-01-31 09:26:49,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:26:49,524 INFO L93 Difference]: Finished difference Result 155 states and 166 transitions. [2018-01-31 09:26:49,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 09:26:49,524 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-01-31 09:26:49,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:26:49,525 INFO L225 Difference]: With dead ends: 155 [2018-01-31 09:26:49,525 INFO L226 Difference]: Without dead ends: 103 [2018-01-31 09:26:49,525 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-31 09:26:49,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-01-31 09:26:49,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 93. [2018-01-31 09:26:49,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-01-31 09:26:49,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2018-01-31 09:26:49,530 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 112 [2018-01-31 09:26:49,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:26:49,530 INFO L432 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2018-01-31 09:26:49,530 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 09:26:49,530 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2018-01-31 09:26:49,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-01-31 09:26:49,531 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:26:49,531 INFO L351 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:26:49,531 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolation]=== [2018-01-31 09:26:49,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1429723589, now seen corresponding path program 1 times [2018-01-31 09:26:49,532 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:26:49,532 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:26:49,532 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:49,532 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:26:49,532 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:26:49,548 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:26:49,629 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-01-31 09:26:49,629 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:26:49,629 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:26:49,635 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:26:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:26:49,677 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:26:49,940 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2018-01-31 09:26:49,956 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:26:49,956 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2018-01-31 09:26:49,957 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-31 09:26:49,957 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-31 09:26:49,957 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-31 09:26:49,957 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 10 states. [2018-01-31 09:26:50,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:26:50,088 INFO L93 Difference]: Finished difference Result 182 states and 191 transitions. [2018-01-31 09:26:50,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-31 09:26:50,088 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 144 [2018-01-31 09:26:50,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:26:50,089 INFO L225 Difference]: With dead ends: 182 [2018-01-31 09:26:50,089 INFO L226 Difference]: Without dead ends: 119 [2018-01-31 09:26:50,089 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-01-31 09:26:50,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-01-31 09:26:50,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 109. [2018-01-31 09:26:50,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-01-31 09:26:50,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2018-01-31 09:26:50,095 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 144 [2018-01-31 09:26:50,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:26:50,095 INFO L432 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2018-01-31 09:26:50,095 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-31 09:26:50,095 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2018-01-31 09:26:50,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-01-31 09:26:50,096 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:26:50,096 INFO L351 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:26:50,096 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolation]=== [2018-01-31 09:26:50,096 INFO L82 PathProgramCache]: Analyzing trace with hash 918434213, now seen corresponding path program 2 times [2018-01-31 09:26:50,096 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:26:50,097 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:26:50,097 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:50,097 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:26:50,097 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:26:50,118 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:26:50,205 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-01-31 09:26:50,205 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:26:50,205 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:26:50,209 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:26:50,221 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:26:50,243 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:26:50,252 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:26:50,255 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:26:50,426 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-01-31 09:26:50,442 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:26:50,443 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2018-01-31 09:26:50,443 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-31 09:26:50,443 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-31 09:26:50,443 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-01-31 09:26:50,443 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 14 states. [2018-01-31 09:26:50,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:26:50,772 INFO L93 Difference]: Finished difference Result 206 states and 218 transitions. [2018-01-31 09:26:50,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-31 09:26:50,772 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 160 [2018-01-31 09:26:50,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:26:50,773 INFO L225 Difference]: With dead ends: 206 [2018-01-31 09:26:50,773 INFO L226 Difference]: Without dead ends: 135 [2018-01-31 09:26:50,773 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2018-01-31 09:26:50,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-01-31 09:26:50,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 125. [2018-01-31 09:26:50,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-01-31 09:26:50,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2018-01-31 09:26:50,779 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 160 [2018-01-31 09:26:50,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:26:50,779 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2018-01-31 09:26:50,779 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-31 09:26:50,779 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2018-01-31 09:26:50,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-01-31 09:26:50,781 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:26:50,781 INFO L351 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:26:50,781 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolation]=== [2018-01-31 09:26:50,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1059719273, now seen corresponding path program 3 times [2018-01-31 09:26:50,781 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:26:50,781 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:26:50,782 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:50,782 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:26:50,782 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:26:50,797 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:26:50,908 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2018-01-31 09:26:50,908 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:26:50,908 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:26:50,913 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:26:50,923 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:26:50,927 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:26:50,933 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:26:50,944 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:26:50,945 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:26:50,948 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:26:50,985 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 188 proven. 12 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-01-31 09:26:51,004 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:26:51,004 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-01-31 09:26:51,004 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 09:26:51,004 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 09:26:51,005 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-31 09:26:51,005 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand 9 states. [2018-01-31 09:26:51,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:26:51,071 INFO L93 Difference]: Finished difference Result 180 states and 185 transitions. [2018-01-31 09:26:51,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-31 09:26:51,071 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 192 [2018-01-31 09:26:51,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:26:51,072 INFO L225 Difference]: With dead ends: 180 [2018-01-31 09:26:51,072 INFO L226 Difference]: Without dead ends: 138 [2018-01-31 09:26:51,072 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-01-31 09:26:51,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-01-31 09:26:51,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 133. [2018-01-31 09:26:51,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-01-31 09:26:51,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 137 transitions. [2018-01-31 09:26:51,076 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 137 transitions. Word has length 192 [2018-01-31 09:26:51,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:26:51,087 INFO L432 AbstractCegarLoop]: Abstraction has 133 states and 137 transitions. [2018-01-31 09:26:51,087 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 09:26:51,087 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 137 transitions. [2018-01-31 09:26:51,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-01-31 09:26:51,088 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:26:51,089 INFO L351 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:26:51,089 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolation]=== [2018-01-31 09:26:51,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1802943502, now seen corresponding path program 4 times [2018-01-31 09:26:51,089 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:26:51,089 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:26:51,089 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:51,089 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:26:51,090 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:26:51,117 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:26:51,349 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2018-01-31 09:26:51,349 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:26:51,349 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:26:51,355 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:26:51,383 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:26:51,385 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:26:51,406 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2018-01-31 09:26:51,423 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:26:51,423 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2018-01-31 09:26:51,423 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-31 09:26:51,424 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-31 09:26:51,424 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-31 09:26:51,424 INFO L87 Difference]: Start difference. First operand 133 states and 137 transitions. Second operand 13 states. [2018-01-31 09:26:51,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:26:51,486 INFO L93 Difference]: Finished difference Result 233 states and 241 transitions. [2018-01-31 09:26:51,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-31 09:26:51,487 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 200 [2018-01-31 09:26:51,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:26:51,487 INFO L225 Difference]: With dead ends: 233 [2018-01-31 09:26:51,487 INFO L226 Difference]: Without dead ends: 146 [2018-01-31 09:26:51,488 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2018-01-31 09:26:51,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-31 09:26:51,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 141. [2018-01-31 09:26:51,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-01-31 09:26:51,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 145 transitions. [2018-01-31 09:26:51,492 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 145 transitions. Word has length 200 [2018-01-31 09:26:51,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:26:51,492 INFO L432 AbstractCegarLoop]: Abstraction has 141 states and 145 transitions. [2018-01-31 09:26:51,492 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-31 09:26:51,492 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 145 transitions. [2018-01-31 09:26:51,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-01-31 09:26:51,493 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:26:51,493 INFO L351 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:26:51,493 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolation]=== [2018-01-31 09:26:51,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1334925687, now seen corresponding path program 5 times [2018-01-31 09:26:51,493 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:26:51,493 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:26:51,494 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:51,494 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:26:51,494 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:26:51,506 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:26:51,612 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2018-01-31 09:26:51,612 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:26:51,612 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:26:51,622 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:26:51,630 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:26:51,633 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:26:51,637 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:26:51,643 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:26:51,644 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:26:51,646 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:26:51,715 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 182 proven. 30 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-01-31 09:26:51,732 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:26:51,732 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2018-01-31 09:26:51,732 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-31 09:26:51,733 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-31 09:26:51,733 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2018-01-31 09:26:51,733 INFO L87 Difference]: Start difference. First operand 141 states and 145 transitions. Second operand 20 states. [2018-01-31 09:26:52,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:26:52,013 INFO L93 Difference]: Finished difference Result 254 states and 266 transitions. [2018-01-31 09:26:52,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-31 09:26:52,013 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 208 [2018-01-31 09:26:52,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:26:52,014 INFO L225 Difference]: With dead ends: 254 [2018-01-31 09:26:52,014 INFO L226 Difference]: Without dead ends: 167 [2018-01-31 09:26:52,014 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2018-01-31 09:26:52,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-01-31 09:26:52,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 157. [2018-01-31 09:26:52,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-01-31 09:26:52,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 161 transitions. [2018-01-31 09:26:52,020 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 161 transitions. Word has length 208 [2018-01-31 09:26:52,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:26:52,020 INFO L432 AbstractCegarLoop]: Abstraction has 157 states and 161 transitions. [2018-01-31 09:26:52,020 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-01-31 09:26:52,020 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 161 transitions. [2018-01-31 09:26:52,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-01-31 09:26:52,021 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:26:52,021 INFO L351 BasicCegarLoop]: trace histogram [15, 12, 12, 12, 12, 12, 12, 12, 7, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:26:52,021 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolation]=== [2018-01-31 09:26:52,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1311007081, now seen corresponding path program 6 times [2018-01-31 09:26:52,021 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:26:52,021 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:26:52,022 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:52,022 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:26:52,022 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:26:52,033 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:26:52,225 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-01-31 09:26:52,226 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:26:52,226 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:26:52,231 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:26:52,244 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:26:52,246 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:26:52,250 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:26:52,254 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:26:52,260 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:26:52,276 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:26:52,285 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:26:52,286 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:26:52,288 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:26:52,384 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 454 proven. 56 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2018-01-31 09:26:52,401 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:26:52,402 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2018-01-31 09:26:52,402 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-31 09:26:52,402 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-31 09:26:52,402 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2018-01-31 09:26:52,402 INFO L87 Difference]: Start difference. First operand 157 states and 161 transitions. Second operand 24 states. [2018-01-31 09:26:52,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:26:52,687 INFO L93 Difference]: Finished difference Result 278 states and 290 transitions. [2018-01-31 09:26:52,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-31 09:26:52,701 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 240 [2018-01-31 09:26:52,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:26:52,701 INFO L225 Difference]: With dead ends: 278 [2018-01-31 09:26:52,701 INFO L226 Difference]: Without dead ends: 183 [2018-01-31 09:26:52,702 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=365, Invalid=1527, Unknown=0, NotChecked=0, Total=1892 [2018-01-31 09:26:52,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-01-31 09:26:52,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 173. [2018-01-31 09:26:52,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-01-31 09:26:52,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 177 transitions. [2018-01-31 09:26:52,715 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 177 transitions. Word has length 240 [2018-01-31 09:26:52,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:26:52,716 INFO L432 AbstractCegarLoop]: Abstraction has 173 states and 177 transitions. [2018-01-31 09:26:52,716 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-31 09:26:52,716 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 177 transitions. [2018-01-31 09:26:52,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-01-31 09:26:52,717 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:26:52,717 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 8, 7, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:26:52,717 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolation]=== [2018-01-31 09:26:52,717 INFO L82 PathProgramCache]: Analyzing trace with hash 438292315, now seen corresponding path program 7 times [2018-01-31 09:26:52,717 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:26:52,717 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:26:52,718 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:52,718 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:26:52,718 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:26:52,737 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:26:53,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-31 09:26:53,168 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:26:53,168 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:26:53,172 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:26:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:26:53,206 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:26:53,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-31 09:26:53,294 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:26:53,294 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2018-01-31 09:26:53,295 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-31 09:26:53,295 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-31 09:26:53,295 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-31 09:26:53,295 INFO L87 Difference]: Start difference. First operand 173 states and 177 transitions. Second operand 19 states. [2018-01-31 09:26:53,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:26:53,679 INFO L93 Difference]: Finished difference Result 289 states and 297 transitions. [2018-01-31 09:26:53,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-31 09:26:53,680 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 272 [2018-01-31 09:26:53,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:26:53,680 INFO L225 Difference]: With dead ends: 289 [2018-01-31 09:26:53,680 INFO L226 Difference]: Without dead ends: 186 [2018-01-31 09:26:53,681 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 09:26:53,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-01-31 09:26:53,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 181. [2018-01-31 09:26:53,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-01-31 09:26:53,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 185 transitions. [2018-01-31 09:26:53,692 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 185 transitions. Word has length 272 [2018-01-31 09:26:53,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:26:53,692 INFO L432 AbstractCegarLoop]: Abstraction has 181 states and 185 transitions. [2018-01-31 09:26:53,693 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-31 09:26:53,693 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 185 transitions. [2018-01-31 09:26:53,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-01-31 09:26:53,693 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:26:53,694 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 9, 8, 8, 8, 8, 8, 8, 8, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:26:53,694 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolation]=== [2018-01-31 09:26:53,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1690774468, now seen corresponding path program 8 times [2018-01-31 09:26:53,694 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:26:53,694 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:26:53,694 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:53,694 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:26:53,694 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:26:53,724 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:26:54,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-31 09:26:54,463 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:26:54,463 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:26:54,477 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:26:54,488 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:26:54,510 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:26:54,513 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:26:54,516 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:26:54,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-31 09:26:54,593 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:26:54,593 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-31 09:26:54,593 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 09:26:54,594 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 09:26:54,594 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-31 09:26:54,594 INFO L87 Difference]: Start difference. First operand 181 states and 185 transitions. Second operand 21 states. [2018-01-31 09:26:54,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:26:54,739 INFO L93 Difference]: Finished difference Result 297 states and 305 transitions. [2018-01-31 09:26:54,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-31 09:26:54,739 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 280 [2018-01-31 09:26:54,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:26:54,739 INFO L225 Difference]: With dead ends: 297 [2018-01-31 09:26:54,740 INFO L226 Difference]: Without dead ends: 194 [2018-01-31 09:26:54,740 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 09:26:54,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-01-31 09:26:54,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 189. [2018-01-31 09:26:54,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-31 09:26:54,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 193 transitions. [2018-01-31 09:26:54,743 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 193 transitions. Word has length 280 [2018-01-31 09:26:54,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:26:54,743 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 193 transitions. [2018-01-31 09:26:54,743 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 09:26:54,743 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 193 transitions. [2018-01-31 09:26:54,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-01-31 09:26:54,744 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:26:54,744 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 10, 9, 9, 9, 9, 9, 9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:26:54,744 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolation]=== [2018-01-31 09:26:54,745 INFO L82 PathProgramCache]: Analyzing trace with hash -2140926163, now seen corresponding path program 9 times [2018-01-31 09:26:54,745 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:26:54,745 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:26:54,745 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:54,745 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:26:54,745 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:26:54,756 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:26:54,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-31 09:26:54,990 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:26:54,990 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:26:54,995 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:26:55,006 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:26:55,010 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:26:55,019 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:26:55,027 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:26:55,058 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:26:55,060 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:26:55,063 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:26:55,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 460 proven. 30 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2018-01-31 09:26:55,182 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:26:55,182 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9] total 28 [2018-01-31 09:26:55,183 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-31 09:26:55,183 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-31 09:26:55,183 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2018-01-31 09:26:55,183 INFO L87 Difference]: Start difference. First operand 189 states and 193 transitions. Second operand 28 states. [2018-01-31 09:26:55,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:26:55,626 INFO L93 Difference]: Finished difference Result 313 states and 322 transitions. [2018-01-31 09:26:55,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-31 09:26:55,626 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 288 [2018-01-31 09:26:55,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:26:55,627 INFO L225 Difference]: With dead ends: 313 [2018-01-31 09:26:55,627 INFO L226 Difference]: Without dead ends: 210 [2018-01-31 09:26:55,628 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=575, Invalid=2077, Unknown=0, NotChecked=0, Total=2652 [2018-01-31 09:26:55,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-01-31 09:26:55,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 205. [2018-01-31 09:26:55,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-01-31 09:26:55,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 209 transitions. [2018-01-31 09:26:55,637 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 209 transitions. Word has length 288 [2018-01-31 09:26:55,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:26:55,637 INFO L432 AbstractCegarLoop]: Abstraction has 205 states and 209 transitions. [2018-01-31 09:26:55,637 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-31 09:26:55,637 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 209 transitions. [2018-01-31 09:26:55,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-01-31 09:26:55,638 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:26:55,638 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 11, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:26:55,638 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolation]=== [2018-01-31 09:26:55,638 INFO L82 PathProgramCache]: Analyzing trace with hash -584748275, now seen corresponding path program 10 times [2018-01-31 09:26:55,638 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:26:55,638 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:26:55,639 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:55,639 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:26:55,639 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:26:55,671 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:26:56,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 856 trivial. 0 not checked. [2018-01-31 09:26:56,443 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:26:56,443 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:26:56,448 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:26:56,481 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:26:56,484 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:26:56,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 454 proven. 90 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2018-01-31 09:26:56,539 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:26:56,539 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2018-01-31 09:26:56,539 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-31 09:26:56,540 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-31 09:26:56,540 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-31 09:26:56,540 INFO L87 Difference]: Start difference. First operand 205 states and 209 transitions. Second operand 15 states. [2018-01-31 09:26:56,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:26:56,617 INFO L93 Difference]: Finished difference Result 328 states and 338 transitions. [2018-01-31 09:26:56,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-31 09:26:56,618 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 304 [2018-01-31 09:26:56,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:26:56,618 INFO L225 Difference]: With dead ends: 328 [2018-01-31 09:26:56,618 INFO L226 Difference]: Without dead ends: 218 [2018-01-31 09:26:56,619 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2018-01-31 09:26:56,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-01-31 09:26:56,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 213. [2018-01-31 09:26:56,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-01-31 09:26:56,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 217 transitions. [2018-01-31 09:26:56,622 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 217 transitions. Word has length 304 [2018-01-31 09:26:56,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:26:56,622 INFO L432 AbstractCegarLoop]: Abstraction has 213 states and 217 transitions. [2018-01-31 09:26:56,622 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-31 09:26:56,622 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 217 transitions. [2018-01-31 09:26:56,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-01-31 09:26:56,623 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:26:56,623 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 18, 18, 18, 11, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:26:56,623 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolation]=== [2018-01-31 09:26:56,623 INFO L82 PathProgramCache]: Analyzing trace with hash -112898666, now seen corresponding path program 11 times [2018-01-31 09:26:56,623 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:26:56,623 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:26:56,624 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:56,624 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:26:56,624 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:26:56,635 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:26:57,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1798 backedges. 0 proven. 766 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2018-01-31 09:26:57,030 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:26:57,030 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:26:57,041 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:26:57,057 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:26:57,058 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:26:57,059 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:26:57,062 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:26:57,066 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:26:57,070 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:26:57,076 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:26:57,084 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:26:57,109 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:26:57,110 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:26:57,113 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:26:57,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1798 backedges. 638 proven. 132 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2018-01-31 09:26:57,191 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:26:57,191 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2018-01-31 09:26:57,191 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-31 09:26:57,192 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-31 09:26:57,192 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-01-31 09:26:57,192 INFO L87 Difference]: Start difference. First operand 213 states and 217 transitions. Second operand 17 states. [2018-01-31 09:26:57,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:26:57,371 INFO L93 Difference]: Finished difference Result 344 states and 354 transitions. [2018-01-31 09:26:57,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-31 09:26:57,371 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 328 [2018-01-31 09:26:57,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:26:57,372 INFO L225 Difference]: With dead ends: 344 [2018-01-31 09:26:57,372 INFO L226 Difference]: Without dead ends: 226 [2018-01-31 09:26:57,372 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2018-01-31 09:26:57,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-01-31 09:26:57,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 221. [2018-01-31 09:26:57,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-01-31 09:26:57,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 225 transitions. [2018-01-31 09:26:57,375 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 225 transitions. Word has length 328 [2018-01-31 09:26:57,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:26:57,375 INFO L432 AbstractCegarLoop]: Abstraction has 221 states and 225 transitions. [2018-01-31 09:26:57,375 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-31 09:26:57,375 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 225 transitions. [2018-01-31 09:26:57,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-01-31 09:26:57,376 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:26:57,376 INFO L351 BasicCegarLoop]: trace histogram [24, 21, 21, 21, 21, 21, 21, 21, 11, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:26:57,376 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolation]=== [2018-01-31 09:26:57,377 INFO L82 PathProgramCache]: Analyzing trace with hash 189324575, now seen corresponding path program 12 times [2018-01-31 09:26:57,377 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:26:57,377 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:26:57,377 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:57,377 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:26:57,377 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:26:57,388 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:26:58,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2272 backedges. 0 proven. 1032 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2018-01-31 09:26:58,262 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:26:58,262 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:26:58,266 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:26:58,284 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:26:58,294 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:26:58,307 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:26:58,314 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:26:58,328 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:26:58,351 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:26:58,367 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:26:58,417 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:26:58,450 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:26:58,538 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:26:58,664 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:26:58,665 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:26:58,669 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:26:58,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2272 backedges. 854 proven. 182 refuted. 0 times theorem prover too weak. 1236 trivial. 0 not checked. [2018-01-31 09:26:58,757 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:26:58,758 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2018-01-31 09:26:58,758 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-31 09:26:58,758 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-31 09:26:58,758 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-31 09:26:58,758 INFO L87 Difference]: Start difference. First operand 221 states and 225 transitions. Second operand 19 states. [2018-01-31 09:26:58,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:26:58,886 INFO L93 Difference]: Finished difference Result 360 states and 370 transitions. [2018-01-31 09:26:58,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-31 09:26:58,894 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 352 [2018-01-31 09:26:58,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:26:58,895 INFO L225 Difference]: With dead ends: 360 [2018-01-31 09:26:58,895 INFO L226 Difference]: Without dead ends: 234 [2018-01-31 09:26:58,895 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 09:26:58,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-01-31 09:26:58,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 229. [2018-01-31 09:26:58,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-01-31 09:26:58,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2018-01-31 09:26:58,899 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 352 [2018-01-31 09:26:58,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:26:58,899 INFO L432 AbstractCegarLoop]: Abstraction has 229 states and 233 transitions. [2018-01-31 09:26:58,899 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-31 09:26:58,899 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 233 transitions. [2018-01-31 09:26:58,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-01-31 09:26:58,900 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:26:58,901 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 24, 24, 24, 11, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:26:58,901 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolation]=== [2018-01-31 09:26:58,901 INFO L82 PathProgramCache]: Analyzing trace with hash 830808488, now seen corresponding path program 13 times [2018-01-31 09:26:58,901 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:26:58,901 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:26:58,901 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:58,902 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:26:58,902 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:26:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:26:58,915 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:26:59,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2818 backedges. 0 proven. 1338 refuted. 0 times theorem prover too weak. 1480 trivial. 0 not checked. [2018-01-31 09:26:59,579 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:26:59,579 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:26:59,584 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:26:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:26:59,625 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:26:59,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2818 backedges. 1102 proven. 240 refuted. 0 times theorem prover too weak. 1476 trivial. 0 not checked. [2018-01-31 09:27:00,011 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:27:00,011 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-31 09:27:00,011 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 09:27:00,011 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 09:27:00,011 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-31 09:27:00,011 INFO L87 Difference]: Start difference. First operand 229 states and 233 transitions. Second operand 21 states. [2018-01-31 09:27:00,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:27:00,408 INFO L93 Difference]: Finished difference Result 376 states and 386 transitions. [2018-01-31 09:27:00,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-31 09:27:00,408 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 376 [2018-01-31 09:27:00,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:27:00,409 INFO L225 Difference]: With dead ends: 376 [2018-01-31 09:27:00,409 INFO L226 Difference]: Without dead ends: 242 [2018-01-31 09:27:00,410 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 09:27:00,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-01-31 09:27:00,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 237. [2018-01-31 09:27:00,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-01-31 09:27:00,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 241 transitions. [2018-01-31 09:27:00,413 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 241 transitions. Word has length 376 [2018-01-31 09:27:00,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:27:00,413 INFO L432 AbstractCegarLoop]: Abstraction has 237 states and 241 transitions. [2018-01-31 09:27:00,413 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 09:27:00,413 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 241 transitions. [2018-01-31 09:27:00,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-01-31 09:27:00,414 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:27:00,415 INFO L351 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 27, 11, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:27:00,415 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolation]=== [2018-01-31 09:27:00,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1353770191, now seen corresponding path program 14 times [2018-01-31 09:27:00,415 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:27:00,415 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:27:00,415 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:27:00,415 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:27:00,415 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:27:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:27:00,427 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:27:00,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3436 backedges. 0 proven. 1684 refuted. 0 times theorem prover too weak. 1752 trivial. 0 not checked. [2018-01-31 09:27:00,812 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:27:00,812 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:27:00,816 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:27:00,829 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:27:00,860 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:27:00,865 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:27:00,868 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:27:00,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3436 backedges. 1382 proven. 306 refuted. 0 times theorem prover too weak. 1748 trivial. 0 not checked. [2018-01-31 09:27:00,992 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:27:00,992 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2018-01-31 09:27:00,992 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-31 09:27:00,992 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-31 09:27:00,993 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-01-31 09:27:00,993 INFO L87 Difference]: Start difference. First operand 237 states and 241 transitions. Second operand 23 states. [2018-01-31 09:27:01,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:27:01,413 INFO L93 Difference]: Finished difference Result 387 states and 397 transitions. [2018-01-31 09:27:01,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-31 09:27:01,414 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 400 [2018-01-31 09:27:01,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:27:01,415 INFO L225 Difference]: With dead ends: 387 [2018-01-31 09:27:01,415 INFO L226 Difference]: Without dead ends: 245 [2018-01-31 09:27:01,416 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2018-01-31 09:27:01,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-01-31 09:27:01,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-01-31 09:27:01,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-01-31 09:27:01,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 249 transitions. [2018-01-31 09:27:01,419 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 249 transitions. Word has length 400 [2018-01-31 09:27:01,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:27:01,419 INFO L432 AbstractCegarLoop]: Abstraction has 245 states and 249 transitions. [2018-01-31 09:27:01,419 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-31 09:27:01,419 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 249 transitions. [2018-01-31 09:27:01,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-01-31 09:27:01,420 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:27:01,421 INFO L351 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:27:01,421 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolation]=== [2018-01-31 09:27:01,421 INFO L82 PathProgramCache]: Analyzing trace with hash -319043142, now seen corresponding path program 15 times [2018-01-31 09:27:01,421 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:27:01,421 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:27:01,421 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:27:01,421 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:27:01,422 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:27:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:27:01,433 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:27:01,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4126 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-31 09:27:01,638 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:27:01,638 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:27:01,643 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:27:01,656 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:27:01,660 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:27:01,665 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:27:01,673 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:27:01,687 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:27:01,721 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:27:01,723 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:27:01,725 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:27:01,851 INFO L134 CoverageAnalysis]: Checked inductivity of 4126 backedges. 1700 proven. 56 refuted. 0 times theorem prover too weak. 2370 trivial. 0 not checked. [2018-01-31 09:27:01,868 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:27:01,868 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2018-01-31 09:27:01,869 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-31 09:27:01,869 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-31 09:27:01,869 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-31 09:27:01,869 INFO L87 Difference]: Start difference. First operand 245 states and 249 transitions. Second operand 13 states. [2018-01-31 09:27:02,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:27:02,191 INFO L93 Difference]: Finished difference Result 356 states and 361 transitions. [2018-01-31 09:27:02,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-31 09:27:02,191 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 424 [2018-01-31 09:27:02,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:27:02,192 INFO L225 Difference]: With dead ends: 356 [2018-01-31 09:27:02,192 INFO L226 Difference]: Without dead ends: 258 [2018-01-31 09:27:02,193 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2018-01-31 09:27:02,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-01-31 09:27:02,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 253. [2018-01-31 09:27:02,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-01-31 09:27:02,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 257 transitions. [2018-01-31 09:27:02,197 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 257 transitions. Word has length 424 [2018-01-31 09:27:02,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:27:02,197 INFO L432 AbstractCegarLoop]: Abstraction has 253 states and 257 transitions. [2018-01-31 09:27:02,197 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-31 09:27:02,197 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 257 transitions. [2018-01-31 09:27:02,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-01-31 09:27:02,199 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:27:02,199 INFO L351 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:27:02,199 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolation]=== [2018-01-31 09:27:02,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1421048113, now seen corresponding path program 16 times [2018-01-31 09:27:02,200 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:27:02,200 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:27:02,200 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:27:02,200 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:27:02,200 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:27:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:27:02,213 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:27:02,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-31 09:27:02,769 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:27:02,769 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:27:02,773 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:27:02,817 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:27:02,820 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:27:02,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 1700 proven. 90 refuted. 0 times theorem prover too weak. 2370 trivial. 0 not checked. [2018-01-31 09:27:02,980 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:27:02,980 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2018-01-31 09:27:02,980 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-31 09:27:02,980 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-31 09:27:02,980 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-31 09:27:02,981 INFO L87 Difference]: Start difference. First operand 253 states and 257 transitions. Second operand 15 states. [2018-01-31 09:27:03,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:27:03,058 INFO L93 Difference]: Finished difference Result 364 states and 369 transitions. [2018-01-31 09:27:03,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-31 09:27:03,059 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 432 [2018-01-31 09:27:03,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:27:03,060 INFO L225 Difference]: With dead ends: 364 [2018-01-31 09:27:03,060 INFO L226 Difference]: Without dead ends: 266 [2018-01-31 09:27:03,060 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2018-01-31 09:27:03,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-01-31 09:27:03,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 261. [2018-01-31 09:27:03,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-01-31 09:27:03,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 265 transitions. [2018-01-31 09:27:03,063 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 265 transitions. Word has length 432 [2018-01-31 09:27:03,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:27:03,063 INFO L432 AbstractCegarLoop]: Abstraction has 261 states and 265 transitions. [2018-01-31 09:27:03,063 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-31 09:27:03,064 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 265 transitions. [2018-01-31 09:27:03,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2018-01-31 09:27:03,067 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:27:03,067 INFO L351 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:27:03,067 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolation]=== [2018-01-31 09:27:03,067 INFO L82 PathProgramCache]: Analyzing trace with hash -920927832, now seen corresponding path program 17 times [2018-01-31 09:27:03,067 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:27:03,067 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:27:03,068 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:27:03,068 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:27:03,068 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:27:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:27:03,087 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:27:03,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4202 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-31 09:27:03,414 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:27:03,414 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:27:03,419 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:27:03,430 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:27:03,431 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:27:03,434 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:27:03,436 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:27:03,439 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:27:03,443 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:27:03,450 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:27:03,461 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:27:03,498 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:27:03,522 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:27:03,577 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:27:03,704 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:27:03,706 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:27:03,710 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:27:03,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4202 backedges. 1700 proven. 132 refuted. 0 times theorem prover too weak. 2370 trivial. 0 not checked. [2018-01-31 09:27:03,809 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:27:03,810 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2018-01-31 09:27:03,810 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-31 09:27:03,810 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-31 09:27:03,810 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-01-31 09:27:03,810 INFO L87 Difference]: Start difference. First operand 261 states and 265 transitions. Second operand 17 states. [2018-01-31 09:27:03,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:27:03,903 INFO L93 Difference]: Finished difference Result 372 states and 377 transitions. [2018-01-31 09:27:03,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-31 09:27:03,903 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 440 [2018-01-31 09:27:03,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:27:03,904 INFO L225 Difference]: With dead ends: 372 [2018-01-31 09:27:03,904 INFO L226 Difference]: Without dead ends: 274 [2018-01-31 09:27:03,904 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 439 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 09:27:03,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-01-31 09:27:03,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 269. [2018-01-31 09:27:03,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-01-31 09:27:03,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 273 transitions. [2018-01-31 09:27:03,907 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 273 transitions. Word has length 440 [2018-01-31 09:27:03,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:27:03,908 INFO L432 AbstractCegarLoop]: Abstraction has 269 states and 273 transitions. [2018-01-31 09:27:03,908 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-31 09:27:03,908 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 273 transitions. [2018-01-31 09:27:03,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-01-31 09:27:03,909 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:27:03,909 INFO L351 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 8, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:27:03,909 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolation]=== [2018-01-31 09:27:03,910 INFO L82 PathProgramCache]: Analyzing trace with hash -2138332385, now seen corresponding path program 18 times [2018-01-31 09:27:03,910 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:27:03,910 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:27:03,910 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:27:03,910 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:27:03,910 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:27:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:27:03,922 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:27:04,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4252 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-31 09:27:04,238 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:27:04,238 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:27:04,243 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:27:04,256 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:27:04,265 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:27:04,280 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:27:04,287 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:27:04,292 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:27:04,306 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:27:04,321 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:27:04,349 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:27:04,391 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:27:04,423 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:27:04,479 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:27:04,684 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:27:04,937 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:27:04,939 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:27:04,944 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:27:05,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4252 backedges. 1700 proven. 182 refuted. 0 times theorem prover too weak. 2370 trivial. 0 not checked. [2018-01-31 09:27:05,069 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:27:05,069 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2018-01-31 09:27:05,070 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-31 09:27:05,070 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-31 09:27:05,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-31 09:27:05,070 INFO L87 Difference]: Start difference. First operand 269 states and 273 transitions. Second operand 19 states. [2018-01-31 09:27:05,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:27:05,515 INFO L93 Difference]: Finished difference Result 380 states and 385 transitions. [2018-01-31 09:27:05,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-31 09:27:05,516 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 448 [2018-01-31 09:27:05,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:27:05,517 INFO L225 Difference]: With dead ends: 380 [2018-01-31 09:27:05,518 INFO L226 Difference]: Without dead ends: 282 [2018-01-31 09:27:05,518 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 09:27:05,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2018-01-31 09:27:05,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 277. [2018-01-31 09:27:05,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-01-31 09:27:05,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 281 transitions. [2018-01-31 09:27:05,522 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 281 transitions. Word has length 448 [2018-01-31 09:27:05,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:27:05,523 INFO L432 AbstractCegarLoop]: Abstraction has 277 states and 281 transitions. [2018-01-31 09:27:05,523 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-31 09:27:05,523 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 281 transitions. [2018-01-31 09:27:05,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2018-01-31 09:27:05,524 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:27:05,524 INFO L351 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:27:05,525 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr0AssertViolation]=== [2018-01-31 09:27:05,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1784290710, now seen corresponding path program 19 times [2018-01-31 09:27:05,525 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:27:05,525 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:27:05,525 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:27:05,525 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:27:05,525 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:27:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:27:05,538 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:27:06,017 INFO L134 CoverageAnalysis]: Checked inductivity of 4310 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-31 09:27:06,018 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:27:06,018 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:27:06,023 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:27:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:27:06,073 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:27:06,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4310 backedges. 1700 proven. 240 refuted. 0 times theorem prover too weak. 2370 trivial. 0 not checked. [2018-01-31 09:27:06,475 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:27:06,475 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-31 09:27:06,475 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 09:27:06,475 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 09:27:06,476 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-31 09:27:06,476 INFO L87 Difference]: Start difference. First operand 277 states and 281 transitions. Second operand 21 states. [2018-01-31 09:27:06,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:27:06,663 INFO L93 Difference]: Finished difference Result 383 states and 388 transitions. [2018-01-31 09:27:06,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-31 09:27:06,663 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 456 [2018-01-31 09:27:06,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:27:06,664 INFO L225 Difference]: With dead ends: 383 [2018-01-31 09:27:06,664 INFO L226 Difference]: Without dead ends: 285 [2018-01-31 09:27:06,664 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 09:27:06,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-01-31 09:27:06,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2018-01-31 09:27:06,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-01-31 09:27:06,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 289 transitions. [2018-01-31 09:27:06,667 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 289 transitions. Word has length 456 [2018-01-31 09:27:06,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:27:06,668 INFO L432 AbstractCegarLoop]: Abstraction has 285 states and 289 transitions. [2018-01-31 09:27:06,668 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 09:27:06,668 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 289 transitions. [2018-01-31 09:27:06,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2018-01-31 09:27:06,669 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:27:06,669 INFO L351 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:27:06,669 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr0AssertViolation]=== [2018-01-31 09:27:06,669 INFO L82 PathProgramCache]: Analyzing trace with hash 786313485, now seen corresponding path program 20 times [2018-01-31 09:27:06,670 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:27:06,670 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:27:06,670 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:27:06,670 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:27:06,670 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:27:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:27:07,027 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. Received shutdown request... [2018-01-31 09:29:28,133 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$IntegerInterpolator.interpolate(Interpolator.java:1423) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$MixedLAInterpolator.convert(Interpolator.java:1279) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:125) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.access$0(TermTransformer.java:121) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:73) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:239) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.mixedPivotLA(Interpolator.java:1469) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.combine(Interpolator.java:357) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.access$2(Interpolator.java:326) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$CombineInterpolants.walk(Interpolator.java:153) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:220) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:915) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackTraceAbstractionRefinementStrategy.getTraceCheck(MultiTrackTraceAbstractionRefinementStrategy.java:218) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:397) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:115) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:119) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-01-31 09:29:28,136 INFO L168 Benchmark]: Toolchain (without parser) took 160439.36 ms. Allocated memory was 151.5 MB in the beginning and 2.3 GB in the end (delta: 2.2 GB). Free memory was 115.3 MB in the beginning and 254.9 MB in the end (delta: -139.6 MB). Peak memory consumption was 2.1 GB. Max. memory is 5.3 GB. [2018-01-31 09:29:28,137 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 151.5 MB. Free memory is still 121.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 09:29:28,137 INFO L168 Benchmark]: CACSL2BoogieTranslator took 110.78 ms. Allocated memory is still 151.5 MB. Free memory was 115.1 MB in the beginning and 106.5 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 5.3 GB. [2018-01-31 09:29:28,137 INFO L168 Benchmark]: Boogie Preprocessor took 19.63 ms. Allocated memory is still 151.5 MB. Free memory was 106.5 MB in the beginning and 104.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 5.3 GB. [2018-01-31 09:29:28,137 INFO L168 Benchmark]: RCFGBuilder took 414.38 ms. Allocated memory is still 151.5 MB. Free memory was 104.8 MB in the beginning and 86.1 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 5.3 GB. [2018-01-31 09:29:28,137 INFO L168 Benchmark]: TraceAbstraction took 159892.15 ms. Allocated memory was 151.5 MB in the beginning and 2.3 GB in the end (delta: 2.2 GB). Free memory was 85.8 MB in the beginning and 254.9 MB in the end (delta: -169.0 MB). Peak memory consumption was 2.1 GB. Max. memory is 5.3 GB. [2018-01-31 09:29:28,138 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 151.5 MB. Free memory is still 121.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 110.78 ms. Allocated memory is still 151.5 MB. Free memory was 115.1 MB in the beginning and 106.5 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 19.63 ms. Allocated memory is still 151.5 MB. Free memory was 106.5 MB in the beginning and 104.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 5.3 GB. * RCFGBuilder took 414.38 ms. Allocated memory is still 151.5 MB. Free memory was 104.8 MB in the beginning and 86.1 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 159892.15 ms. Allocated memory was 151.5 MB in the beginning and 2.3 GB in the end (delta: 2.2 GB). Free memory was 85.8 MB in the beginning and 254.9 MB in the end (delta: -169.0 MB). Peak memory consumption was 2.1 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$IntegerInterpolator.interpolate(Interpolator.java:1423) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum10_true-unreach-call_true-termination.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-31_09-29-28-142.csv Completed graceful shutdown