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/array-examples/standard_copyInit_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cceb4a-m [2018-01-29 23:35:20,758 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-29 23:35:20,759 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-29 23:35:20,773 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-29 23:35:20,773 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-29 23:35:20,773 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-29 23:35:20,774 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-29 23:35:20,775 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-29 23:35:20,776 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-29 23:35:20,776 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-29 23:35:20,777 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-29 23:35:20,777 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-29 23:35:20,777 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-29 23:35:20,778 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-29 23:35:20,778 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-29 23:35:20,780 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-29 23:35:20,781 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-29 23:35:20,782 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-29 23:35:20,782 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-29 23:35:20,783 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-29 23:35:20,784 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-29 23:35:20,787 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 [2018-01-29 23:35:20,796 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-29 23:35:20,796 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-29 23:35:20,796 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-29 23:35:20,797 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-29 23:35:20,797 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-29 23:35:20,797 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-29 23:35:20,797 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-29 23:35:20,797 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-29 23:35:20,797 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-29 23:35:20,797 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-29 23:35:20,797 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-29 23:35:20,797 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-29 23:35:20,798 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-29 23:35:20,798 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-29 23:35:20,798 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-29 23:35:20,798 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-29 23:35:20,798 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-29 23:35:20,798 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-29 23:35:20,798 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-29 23:35:20,798 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-29 23:35:20,798 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-29 23:35:20,798 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-29 23:35:20,798 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-29 23:35:20,799 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-29 23:35:20,799 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-29 23:35:20,799 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-29 23:35:20,799 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-29 23:35:20,799 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-29 23:35:20,799 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-29 23:35:20,799 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-29 23:35:20,799 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-29 23:35:20,799 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-29 23:35:20,802 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-29 23:35:20,802 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-29 23:35:20,827 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-29 23:35:20,833 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-29 23:35:20,835 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-29 23:35:20,836 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-29 23:35:20,836 INFO L276 PluginConnector]: CDTParser initialized [2018-01-29 23:35:20,837 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copyInit_true-unreach-call_ground.i [2018-01-29 23:35:20,899 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-29 23:35:20,900 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-29 23:35:20,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-29 23:35:20,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-29 23:35:20,904 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-29 23:35:20,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 11:35:20" (1/1) ... [2018-01-29 23:35:20,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22b4fea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:35:20, skipping insertion in model container [2018-01-29 23:35:20,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 11:35:20" (1/1) ... [2018-01-29 23:35:20,915 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-29 23:35:20,923 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-29 23:35:20,997 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-29 23:35:21,005 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-29 23:35:21,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:35:21 WrapperNode [2018-01-29 23:35:21,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-29 23:35:21,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-29 23:35:21,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-29 23:35:21,008 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-29 23:35:21,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:35:21" (1/1) ... [2018-01-29 23:35:21,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:35:21" (1/1) ... [2018-01-29 23:35:21,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:35:21" (1/1) ... [2018-01-29 23:35:21,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:35:21" (1/1) ... [2018-01-29 23:35:21,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:35:21" (1/1) ... [2018-01-29 23:35:21,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:35:21" (1/1) ... [2018-01-29 23:35:21,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:35:21" (1/1) ... [2018-01-29 23:35:21,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-29 23:35:21,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-29 23:35:21,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-29 23:35:21,026 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-29 23:35:21,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:35:21" (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 [2018-01-29 23:35:21,062 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-29 23:35:21,062 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-29 23:35:21,062 INFO L136 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-01-29 23:35:21,062 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-29 23:35:21,062 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-29 23:35:21,063 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-01-29 23:35:21,063 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-29 23:35:21,063 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-29 23:35:21,063 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-29 23:35:21,285 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-29 23:35:21,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 11:35:21 BoogieIcfgContainer [2018-01-29 23:35:21,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-29 23:35:21,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-29 23:35:21,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-29 23:35:21,288 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-29 23:35:21,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 11:35:20" (1/3) ... [2018-01-29 23:35:21,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a089c6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 11:35:21, skipping insertion in model container [2018-01-29 23:35:21,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:35:21" (2/3) ... [2018-01-29 23:35:21,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a089c6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 11:35:21, skipping insertion in model container [2018-01-29 23:35:21,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 11:35:21" (3/3) ... [2018-01-29 23:35:21,290 INFO L107 eAbstractionObserver]: Analyzing ICFG standard_copyInit_true-unreach-call_ground.i [2018-01-29 23:35:21,295 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-29 23:35:21,301 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-29 23:35:21,324 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-29 23:35:21,325 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-29 23:35:21,325 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-29 23:35:21,325 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-29 23:35:21,325 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-29 23:35:21,325 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-29 23:35:21,325 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-29 23:35:21,325 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-29 23:35:21,326 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-29 23:35:21,334 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-01-29 23:35:21,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-29 23:35:21,338 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:21,338 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:21,338 INFO L371 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:21,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1727654802, now seen corresponding path program 1 times [2018-01-29 23:35:21,342 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:21,342 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:21,370 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:21,370 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:35:21,371 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:21,390 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:21,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-29 23:35:21,406 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 23:35:21,407 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-29 23:35:21,408 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-29 23:35:21,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-29 23:35:21,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-29 23:35:21,416 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2018-01-29 23:35:21,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:21,429 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2018-01-29 23:35:21,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-29 23:35:21,430 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-01-29 23:35:21,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:21,435 INFO L225 Difference]: With dead ends: 63 [2018-01-29 23:35:21,436 INFO L226 Difference]: Without dead ends: 32 [2018-01-29 23:35:21,437 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-29 23:35:21,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-01-29 23:35:21,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-01-29 23:35:21,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-01-29 23:35:21,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2018-01-29 23:35:21,458 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 18 [2018-01-29 23:35:21,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:21,459 INFO L432 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2018-01-29 23:35:21,459 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-29 23:35:21,459 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2018-01-29 23:35:21,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-29 23:35:21,459 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:21,459 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:21,460 INFO L371 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:21,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1258523011, now seen corresponding path program 1 times [2018-01-29 23:35:21,460 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:21,460 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:21,461 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:21,461 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:35:21,461 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:21,466 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:21,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-29 23:35:21,519 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 23:35:21,519 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-29 23:35:21,520 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-29 23:35:21,520 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-29 23:35:21,520 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-29 23:35:21,521 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 3 states. [2018-01-29 23:35:21,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:21,675 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2018-01-29 23:35:21,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-29 23:35:21,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-01-29 23:35:21,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:21,676 INFO L225 Difference]: With dead ends: 62 [2018-01-29 23:35:21,676 INFO L226 Difference]: Without dead ends: 41 [2018-01-29 23:35:21,677 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-29 23:35:21,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-01-29 23:35:21,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2018-01-29 23:35:21,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-01-29 23:35:21,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2018-01-29 23:35:21,680 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 20 [2018-01-29 23:35:21,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:21,680 INFO L432 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2018-01-29 23:35:21,680 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-29 23:35:21,680 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2018-01-29 23:35:21,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-29 23:35:21,681 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:21,681 INFO L350 BasicCegarLoop]: trace histogram [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] [2018-01-29 23:35:21,681 INFO L371 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:21,681 INFO L82 PathProgramCache]: Analyzing trace with hash 2077973284, now seen corresponding path program 1 times [2018-01-29 23:35:21,681 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:21,681 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:21,682 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:21,682 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:35:21,682 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:21,691 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:21,742 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-29 23:35:21,743 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:21,743 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 [2018-01-29 23:35:21,761 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:35:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:21,837 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:21,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-29 23:35:21,866 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:21,866 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-01-29 23:35:21,866 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-29 23:35:21,867 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-29 23:35:21,867 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-29 23:35:21,867 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 4 states. [2018-01-29 23:35:21,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:21,974 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2018-01-29 23:35:21,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-29 23:35:21,975 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-01-29 23:35:21,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:21,976 INFO L225 Difference]: With dead ends: 68 [2018-01-29 23:35:21,976 INFO L226 Difference]: Without dead ends: 45 [2018-01-29 23:35:21,976 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-29 23:35:21,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-01-29 23:35:21,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2018-01-29 23:35:21,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-01-29 23:35:21,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2018-01-29 23:35:21,979 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 30 [2018-01-29 23:35:21,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:21,979 INFO L432 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2018-01-29 23:35:21,979 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-29 23:35:21,979 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2018-01-29 23:35:21,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-29 23:35:21,982 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:21,982 INFO L350 BasicCegarLoop]: trace histogram [3, 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] [2018-01-29 23:35:21,982 INFO L371 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:21,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1040550621, now seen corresponding path program 2 times [2018-01-29 23:35:21,982 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:21,982 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:21,983 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:21,983 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:35:21,983 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:21,992 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:22,041 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-29 23:35:22,041 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:22,042 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:35:22,051 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-29 23:35:22,062 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:22,065 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:22,073 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:22,074 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:22,078 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-29 23:35:22,096 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:22,096 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-01-29 23:35:22,097 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-29 23:35:22,097 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-29 23:35:22,097 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-29 23:35:22,097 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 5 states. [2018-01-29 23:35:22,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:22,207 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2018-01-29 23:35:22,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-29 23:35:22,208 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2018-01-29 23:35:22,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:22,208 INFO L225 Difference]: With dead ends: 72 [2018-01-29 23:35:22,208 INFO L226 Difference]: Without dead ends: 49 [2018-01-29 23:35:22,209 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-29 23:35:22,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-01-29 23:35:22,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 44. [2018-01-29 23:35:22,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-01-29 23:35:22,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2018-01-29 23:35:22,213 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 34 [2018-01-29 23:35:22,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:22,213 INFO L432 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2018-01-29 23:35:22,213 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-29 23:35:22,213 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2018-01-29 23:35:22,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-29 23:35:22,214 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:22,214 INFO L350 BasicCegarLoop]: trace histogram [4, 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] [2018-01-29 23:35:22,214 INFO L371 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:22,214 INFO L82 PathProgramCache]: Analyzing trace with hash 2075080214, now seen corresponding path program 3 times [2018-01-29 23:35:22,214 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:22,214 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:22,215 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:22,215 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:22,215 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:22,228 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:22,294 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-29 23:35:22,294 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:22,294 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 [2018-01-29 23:35:22,307 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-29 23:35:22,311 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:22,319 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:22,320 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:22,323 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:22,338 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-01-29 23:35:22,354 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:22,354 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2018-01-29 23:35:22,355 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-29 23:35:22,355 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-29 23:35:22,355 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-29 23:35:22,355 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 7 states. [2018-01-29 23:35:22,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:22,453 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2018-01-29 23:35:22,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-29 23:35:22,454 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2018-01-29 23:35:22,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:22,454 INFO L225 Difference]: With dead ends: 82 [2018-01-29 23:35:22,454 INFO L226 Difference]: Without dead ends: 59 [2018-01-29 23:35:22,455 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-01-29 23:35:22,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-01-29 23:35:22,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2018-01-29 23:35:22,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-29 23:35:22,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2018-01-29 23:35:22,458 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 38 [2018-01-29 23:35:22,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:22,458 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2018-01-29 23:35:22,458 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-29 23:35:22,458 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2018-01-29 23:35:22,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-01-29 23:35:22,459 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:22,459 INFO L350 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:22,459 INFO L371 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:22,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1738223305, now seen corresponding path program 4 times [2018-01-29 23:35:22,459 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:22,459 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:22,460 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:22,460 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:22,460 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:22,468 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:22,582 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-01-29 23:35:22,582 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:22,582 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) [2018-01-29 23:35:22,596 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:35:22,606 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:22,608 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:22,614 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-01-29 23:35:22,630 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:22,631 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-01-29 23:35:22,631 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-29 23:35:22,631 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-29 23:35:22,631 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-29 23:35:22,631 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 7 states. [2018-01-29 23:35:22,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:22,719 INFO L93 Difference]: Finished difference Result 89 states and 95 transitions. [2018-01-29 23:35:22,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-29 23:35:22,720 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2018-01-29 23:35:22,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:22,720 INFO L225 Difference]: With dead ends: 89 [2018-01-29 23:35:22,720 INFO L226 Difference]: Without dead ends: 60 [2018-01-29 23:35:22,720 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-29 23:35:22,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-01-29 23:35:22,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2018-01-29 23:35:22,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-01-29 23:35:22,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2018-01-29 23:35:22,724 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 48 [2018-01-29 23:35:22,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:22,724 INFO L432 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2018-01-29 23:35:22,724 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-29 23:35:22,724 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2018-01-29 23:35:22,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-01-29 23:35:22,725 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:22,725 INFO L350 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:22,725 INFO L371 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:22,725 INFO L82 PathProgramCache]: Analyzing trace with hash -870194000, now seen corresponding path program 5 times [2018-01-29 23:35:22,725 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:22,725 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:22,726 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:22,726 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:22,726 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:22,734 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:22,826 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-01-29 23:35:22,826 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:22,826 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-01-29 23:35:22,832 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-29 23:35:22,837 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:22,839 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:22,840 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:22,843 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:22,847 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:22,865 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:22,879 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:22,881 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:23,029 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-01-29 23:35:23,045 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:23,046 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2018-01-29 23:35:23,046 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-29 23:35:23,046 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-29 23:35:23,046 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-01-29 23:35:23,046 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 10 states. [2018-01-29 23:35:23,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:23,272 INFO L93 Difference]: Finished difference Result 102 states and 109 transitions. [2018-01-29 23:35:23,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-29 23:35:23,272 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2018-01-29 23:35:23,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:23,273 INFO L225 Difference]: With dead ends: 102 [2018-01-29 23:35:23,273 INFO L226 Difference]: Without dead ends: 73 [2018-01-29 23:35:23,273 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=109, Unknown=0, NotChecked=0, Total=182 [2018-01-29 23:35:23,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-01-29 23:35:23,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 68. [2018-01-29 23:35:23,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-01-29 23:35:23,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2018-01-29 23:35:23,276 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 52 [2018-01-29 23:35:23,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:23,277 INFO L432 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2018-01-29 23:35:23,277 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-29 23:35:23,277 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2018-01-29 23:35:23,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-01-29 23:35:23,277 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:23,278 INFO L350 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:23,278 INFO L371 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:23,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1983560849, now seen corresponding path program 6 times [2018-01-29 23:35:23,278 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:23,278 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:23,278 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:23,278 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:23,279 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:23,287 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:23,357 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-01-29 23:35:23,358 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:23,358 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 [2018-01-29 23:35:23,366 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-29 23:35:23,371 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:23,377 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:23,387 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:23,396 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:23,406 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:23,415 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:23,425 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:23,429 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:23,431 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:23,436 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-01-29 23:35:23,453 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:23,453 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-01-29 23:35:23,453 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-29 23:35:23,453 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-29 23:35:23,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-29 23:35:23,453 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand 9 states. [2018-01-29 23:35:23,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:23,529 INFO L93 Difference]: Finished difference Result 109 states and 115 transitions. [2018-01-29 23:35:23,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-29 23:35:23,530 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2018-01-29 23:35:23,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:23,530 INFO L225 Difference]: With dead ends: 109 [2018-01-29 23:35:23,530 INFO L226 Difference]: Without dead ends: 74 [2018-01-29 23:35:23,530 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-29 23:35:23,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-01-29 23:35:23,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2018-01-29 23:35:23,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-01-29 23:35:23,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2018-01-29 23:35:23,535 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 62 [2018-01-29 23:35:23,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:23,536 INFO L432 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2018-01-29 23:35:23,536 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-29 23:35:23,536 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2018-01-29 23:35:23,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-01-29 23:35:23,537 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:23,537 INFO L350 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:23,537 INFO L371 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:23,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1664104374, now seen corresponding path program 7 times [2018-01-29 23:35:23,537 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:23,537 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:23,537 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:23,538 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:23,538 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:23,546 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:23,672 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-01-29 23:35:23,672 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:23,672 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 [2018-01-29 23:35:23,678 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:35:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:23,690 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:23,696 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-01-29 23:35:23,712 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:23,712 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-01-29 23:35:23,712 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-29 23:35:23,712 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-29 23:35:23,712 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-01-29 23:35:23,713 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand 10 states. [2018-01-29 23:35:23,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:23,808 INFO L93 Difference]: Finished difference Result 113 states and 119 transitions. [2018-01-29 23:35:23,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-29 23:35:23,808 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2018-01-29 23:35:23,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:23,809 INFO L225 Difference]: With dead ends: 113 [2018-01-29 23:35:23,809 INFO L226 Difference]: Without dead ends: 78 [2018-01-29 23:35:23,809 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-01-29 23:35:23,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-01-29 23:35:23,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2018-01-29 23:35:23,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-01-29 23:35:23,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2018-01-29 23:35:23,817 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 66 [2018-01-29 23:35:23,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:23,817 INFO L432 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2018-01-29 23:35:23,817 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-29 23:35:23,817 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2018-01-29 23:35:23,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-01-29 23:35:23,818 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:23,818 INFO L350 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:23,818 INFO L371 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:23,818 INFO L82 PathProgramCache]: Analyzing trace with hash 370560899, now seen corresponding path program 8 times [2018-01-29 23:35:23,818 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:23,818 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:23,819 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:23,819 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:35:23,819 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:23,826 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:23,976 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-01-29 23:35:23,976 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:23,976 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 [2018-01-29 23:35:23,981 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-29 23:35:23,984 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:23,989 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:23,990 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:23,991 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:23,998 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-01-29 23:35:24,033 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:24,033 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-01-29 23:35:24,033 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-29 23:35:24,033 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-29 23:35:24,034 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-01-29 23:35:24,034 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand 11 states. [2018-01-29 23:35:24,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:24,134 INFO L93 Difference]: Finished difference Result 117 states and 123 transitions. [2018-01-29 23:35:24,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-29 23:35:24,134 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2018-01-29 23:35:24,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:24,136 INFO L225 Difference]: With dead ends: 117 [2018-01-29 23:35:24,136 INFO L226 Difference]: Without dead ends: 82 [2018-01-29 23:35:24,136 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-01-29 23:35:24,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-01-29 23:35:24,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2018-01-29 23:35:24,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-01-29 23:35:24,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2018-01-29 23:35:24,140 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 70 [2018-01-29 23:35:24,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:24,140 INFO L432 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2018-01-29 23:35:24,140 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-29 23:35:24,140 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2018-01-29 23:35:24,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-01-29 23:35:24,140 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:24,141 INFO L350 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:24,141 INFO L371 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:24,141 INFO L82 PathProgramCache]: Analyzing trace with hash -303787460, now seen corresponding path program 9 times [2018-01-29 23:35:24,141 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:24,141 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:24,141 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:24,141 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:24,141 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:24,149 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:24,309 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-01-29 23:35:24,309 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:24,309 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 [2018-01-29 23:35:24,317 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-29 23:35:24,329 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:24,333 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:24,334 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:24,336 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:24,336 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:24,337 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:24,384 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2018-01-29 23:35:24,401 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:24,402 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 15 [2018-01-29 23:35:24,402 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-29 23:35:24,402 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-29 23:35:24,402 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2018-01-29 23:35:24,402 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand 15 states. [2018-01-29 23:35:24,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:24,498 INFO L93 Difference]: Finished difference Result 130 states and 137 transitions. [2018-01-29 23:35:24,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-29 23:35:24,498 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 74 [2018-01-29 23:35:24,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:24,498 INFO L225 Difference]: With dead ends: 130 [2018-01-29 23:35:24,498 INFO L226 Difference]: Without dead ends: 95 [2018-01-29 23:35:24,499 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2018-01-29 23:35:24,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-01-29 23:35:24,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 90. [2018-01-29 23:35:24,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-01-29 23:35:24,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2018-01-29 23:35:24,502 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 74 [2018-01-29 23:35:24,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:24,502 INFO L432 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2018-01-29 23:35:24,502 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-29 23:35:24,502 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2018-01-29 23:35:24,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-01-29 23:35:24,502 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:24,502 INFO L350 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:24,503 INFO L371 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:24,503 INFO L82 PathProgramCache]: Analyzing trace with hash -79744931, now seen corresponding path program 10 times [2018-01-29 23:35:24,503 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:24,503 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:24,504 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:24,504 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:24,504 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:24,512 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:24,663 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-01-29 23:35:24,664 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:24,664 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 [2018-01-29 23:35:24,671 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-29 23:35:24,686 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:24,687 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:24,694 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-01-29 23:35:24,711 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:24,711 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-01-29 23:35:24,711 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-29 23:35:24,712 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-29 23:35:24,712 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-01-29 23:35:24,712 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand 13 states. [2018-01-29 23:35:24,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:24,772 INFO L93 Difference]: Finished difference Result 137 states and 143 transitions. [2018-01-29 23:35:24,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-29 23:35:24,772 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 84 [2018-01-29 23:35:24,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:24,772 INFO L225 Difference]: With dead ends: 137 [2018-01-29 23:35:24,772 INFO L226 Difference]: Without dead ends: 96 [2018-01-29 23:35:24,773 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-01-29 23:35:24,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-01-29 23:35:24,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2018-01-29 23:35:24,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-01-29 23:35:24,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 97 transitions. [2018-01-29 23:35:24,777 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 97 transitions. Word has length 84 [2018-01-29 23:35:24,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:24,778 INFO L432 AbstractCegarLoop]: Abstraction has 94 states and 97 transitions. [2018-01-29 23:35:24,778 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-29 23:35:24,778 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 97 transitions. [2018-01-29 23:35:24,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-01-29 23:35:24,778 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:24,778 INFO L350 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:24,779 INFO L371 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:24,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1820214442, now seen corresponding path program 11 times [2018-01-29 23:35:24,779 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:24,779 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:24,779 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:24,779 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:24,779 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:24,786 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:24,892 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-01-29 23:35:24,892 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:24,892 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 [2018-01-29 23:35:24,897 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-29 23:35:24,900 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:24,906 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:24,916 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:24,925 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:24,935 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:24,944 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:24,953 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:24,963 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:24,973 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:24,980 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:24,990 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:25,001 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:25,009 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:25,011 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:25,026 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-01-29 23:35:25,053 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:25,053 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-01-29 23:35:25,053 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-29 23:35:25,053 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-29 23:35:25,053 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-01-29 23:35:25,054 INFO L87 Difference]: Start difference. First operand 94 states and 97 transitions. Second operand 14 states. [2018-01-29 23:35:25,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:25,219 INFO L93 Difference]: Finished difference Result 141 states and 147 transitions. [2018-01-29 23:35:25,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-29 23:35:25,219 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 88 [2018-01-29 23:35:25,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:25,220 INFO L225 Difference]: With dead ends: 141 [2018-01-29 23:35:25,220 INFO L226 Difference]: Without dead ends: 100 [2018-01-29 23:35:25,220 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-01-29 23:35:25,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-01-29 23:35:25,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2018-01-29 23:35:25,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-01-29 23:35:25,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2018-01-29 23:35:25,223 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 88 [2018-01-29 23:35:25,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:25,224 INFO L432 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2018-01-29 23:35:25,224 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-29 23:35:25,224 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2018-01-29 23:35:25,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-01-29 23:35:25,224 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:25,224 INFO L350 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:25,224 INFO L371 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:25,224 INFO L82 PathProgramCache]: Analyzing trace with hash -517725745, now seen corresponding path program 12 times [2018-01-29 23:35:25,225 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:25,225 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:25,225 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:25,225 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:25,225 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:25,238 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:25,354 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-01-29 23:35:25,355 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:25,355 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 [2018-01-29 23:35:25,361 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-29 23:35:25,371 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:25,373 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:25,374 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:25,375 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:25,376 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:25,377 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:25,378 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:25,384 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:25,386 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:25,386 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:25,388 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:25,427 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2018-01-29 23:35:25,445 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:25,445 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 19 [2018-01-29 23:35:25,445 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-29 23:35:25,445 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-29 23:35:25,446 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=223, Unknown=0, NotChecked=0, Total=342 [2018-01-29 23:35:25,446 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand 19 states. [2018-01-29 23:35:25,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:25,597 INFO L93 Difference]: Finished difference Result 154 states and 161 transitions. [2018-01-29 23:35:25,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-01-29 23:35:25,598 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 92 [2018-01-29 23:35:25,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:25,599 INFO L225 Difference]: With dead ends: 154 [2018-01-29 23:35:25,599 INFO L226 Difference]: Without dead ends: 113 [2018-01-29 23:35:25,599 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=271, Invalid=431, Unknown=0, NotChecked=0, Total=702 [2018-01-29 23:35:25,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-01-29 23:35:25,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 108. [2018-01-29 23:35:25,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-01-29 23:35:25,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 111 transitions. [2018-01-29 23:35:25,602 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 111 transitions. Word has length 92 [2018-01-29 23:35:25,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:25,602 INFO L432 AbstractCegarLoop]: Abstraction has 108 states and 111 transitions. [2018-01-29 23:35:25,602 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-29 23:35:25,602 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 111 transitions. [2018-01-29 23:35:25,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-01-29 23:35:25,603 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:25,603 INFO L350 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:25,603 INFO L371 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:25,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1800796528, now seen corresponding path program 13 times [2018-01-29 23:35:25,603 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:25,603 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:25,604 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:25,604 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:25,604 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:25,610 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:25,721 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-01-29 23:35:25,721 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:25,721 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 [2018-01-29 23:35:25,727 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:35:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:25,745 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:25,753 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-01-29 23:35:25,769 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:25,770 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-01-29 23:35:25,770 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-01-29 23:35:25,770 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-01-29 23:35:25,770 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-01-29 23:35:25,770 INFO L87 Difference]: Start difference. First operand 108 states and 111 transitions. Second operand 16 states. [2018-01-29 23:35:25,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:25,841 INFO L93 Difference]: Finished difference Result 161 states and 167 transitions. [2018-01-29 23:35:25,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-29 23:35:25,841 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 102 [2018-01-29 23:35:25,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:25,841 INFO L225 Difference]: With dead ends: 161 [2018-01-29 23:35:25,842 INFO L226 Difference]: Without dead ends: 114 [2018-01-29 23:35:25,842 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-01-29 23:35:25,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-01-29 23:35:25,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2018-01-29 23:35:25,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-01-29 23:35:25,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 115 transitions. [2018-01-29 23:35:25,844 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 115 transitions. Word has length 102 [2018-01-29 23:35:25,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:25,844 INFO L432 AbstractCegarLoop]: Abstraction has 112 states and 115 transitions. [2018-01-29 23:35:25,844 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-01-29 23:35:25,845 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 115 transitions. [2018-01-29 23:35:25,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-01-29 23:35:25,845 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:25,845 INFO L350 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:25,845 INFO L371 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:25,845 INFO L82 PathProgramCache]: Analyzing trace with hash 444799017, now seen corresponding path program 14 times [2018-01-29 23:35:25,845 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:25,846 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:25,846 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:25,846 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:35:25,846 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:25,852 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:25,996 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-01-29 23:35:25,996 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:25,996 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 [2018-01-29 23:35:26,001 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-29 23:35:26,005 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:26,013 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:26,014 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:26,016 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:26,024 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-01-29 23:35:26,041 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:26,041 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-01-29 23:35:26,041 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-29 23:35:26,041 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-29 23:35:26,042 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-01-29 23:35:26,042 INFO L87 Difference]: Start difference. First operand 112 states and 115 transitions. Second operand 17 states. [2018-01-29 23:35:26,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:26,291 INFO L93 Difference]: Finished difference Result 165 states and 171 transitions. [2018-01-29 23:35:26,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-29 23:35:26,292 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 106 [2018-01-29 23:35:26,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:26,292 INFO L225 Difference]: With dead ends: 165 [2018-01-29 23:35:26,292 INFO L226 Difference]: Without dead ends: 118 [2018-01-29 23:35:26,293 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-01-29 23:35:26,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-01-29 23:35:26,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2018-01-29 23:35:26,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-01-29 23:35:26,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 119 transitions. [2018-01-29 23:35:26,295 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 119 transitions. Word has length 106 [2018-01-29 23:35:26,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:26,295 INFO L432 AbstractCegarLoop]: Abstraction has 116 states and 119 transitions. [2018-01-29 23:35:26,295 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-29 23:35:26,295 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 119 transitions. [2018-01-29 23:35:26,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-01-29 23:35:26,295 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:26,296 INFO L350 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:26,296 INFO L371 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:26,296 INFO L82 PathProgramCache]: Analyzing trace with hash 471872098, now seen corresponding path program 15 times [2018-01-29 23:35:26,296 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:26,296 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:26,296 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:26,297 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:26,297 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:26,302 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:26,443 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-01-29 23:35:26,443 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:26,444 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 [2018-01-29 23:35:26,448 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-29 23:35:26,452 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:26,453 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:26,454 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:26,470 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:26,479 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:26,481 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:26,481 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:26,482 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:26,518 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2018-01-29 23:35:26,536 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:26,536 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13] total 23 [2018-01-29 23:35:26,536 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-29 23:35:26,537 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-29 23:35:26,537 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=333, Unknown=0, NotChecked=0, Total=506 [2018-01-29 23:35:26,537 INFO L87 Difference]: Start difference. First operand 116 states and 119 transitions. Second operand 23 states. [2018-01-29 23:35:26,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:26,798 INFO L93 Difference]: Finished difference Result 178 states and 185 transitions. [2018-01-29 23:35:26,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-29 23:35:26,798 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 110 [2018-01-29 23:35:26,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:26,799 INFO L225 Difference]: With dead ends: 178 [2018-01-29 23:35:26,799 INFO L226 Difference]: Without dead ends: 131 [2018-01-29 23:35:26,799 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=403, Invalid=653, Unknown=0, NotChecked=0, Total=1056 [2018-01-29 23:35:26,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-01-29 23:35:26,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 126. [2018-01-29 23:35:26,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-01-29 23:35:26,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 129 transitions. [2018-01-29 23:35:26,802 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 129 transitions. Word has length 110 [2018-01-29 23:35:26,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:26,802 INFO L432 AbstractCegarLoop]: Abstraction has 126 states and 129 transitions. [2018-01-29 23:35:26,802 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-29 23:35:26,802 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 129 transitions. [2018-01-29 23:35:26,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-01-29 23:35:26,803 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:26,804 INFO L350 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:26,804 INFO L371 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:26,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1429672835, now seen corresponding path program 16 times [2018-01-29 23:35:26,804 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:26,805 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:26,805 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:26,805 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:26,805 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:26,812 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:27,006 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-01-29 23:35:27,006 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:27,006 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 [2018-01-29 23:35:27,011 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-29 23:35:27,043 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:27,044 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:27,054 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-01-29 23:35:27,071 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:27,072 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-01-29 23:35:27,072 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-29 23:35:27,072 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-29 23:35:27,072 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-01-29 23:35:27,072 INFO L87 Difference]: Start difference. First operand 126 states and 129 transitions. Second operand 19 states. [2018-01-29 23:35:27,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:27,184 INFO L93 Difference]: Finished difference Result 185 states and 191 transitions. [2018-01-29 23:35:27,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-29 23:35:27,184 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 120 [2018-01-29 23:35:27,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:27,185 INFO L225 Difference]: With dead ends: 185 [2018-01-29 23:35:27,185 INFO L226 Difference]: Without dead ends: 132 [2018-01-29 23:35:27,185 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-01-29 23:35:27,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-01-29 23:35:27,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2018-01-29 23:35:27,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-01-29 23:35:27,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 133 transitions. [2018-01-29 23:35:27,187 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 133 transitions. Word has length 120 [2018-01-29 23:35:27,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:27,187 INFO L432 AbstractCegarLoop]: Abstraction has 130 states and 133 transitions. [2018-01-29 23:35:27,187 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-29 23:35:27,187 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 133 transitions. [2018-01-29 23:35:27,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-01-29 23:35:27,188 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:27,188 INFO L350 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:27,188 INFO L371 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:27,188 INFO L82 PathProgramCache]: Analyzing trace with hash 179918332, now seen corresponding path program 17 times [2018-01-29 23:35:27,188 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:27,188 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:27,189 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:27,189 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:27,189 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:27,194 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:27,612 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-01-29 23:35:27,612 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:27,613 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 [2018-01-29 23:35:27,625 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-29 23:35:27,628 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:27,629 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:27,630 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:27,630 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:27,631 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:27,632 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:27,633 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:27,634 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:27,635 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:27,637 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:27,638 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:27,640 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:27,642 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:27,645 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:27,648 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:27,651 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:27,654 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:27,661 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:27,662 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:27,663 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:27,713 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2018-01-29 23:35:27,730 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:27,730 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15] total 26 [2018-01-29 23:35:27,731 INFO L409 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-01-29 23:35:27,731 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-01-29 23:35:27,731 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=433, Unknown=0, NotChecked=0, Total=650 [2018-01-29 23:35:27,731 INFO L87 Difference]: Start difference. First operand 130 states and 133 transitions. Second operand 26 states. [2018-01-29 23:35:27,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:27,901 INFO L93 Difference]: Finished difference Result 198 states and 205 transitions. [2018-01-29 23:35:27,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-01-29 23:35:27,901 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 124 [2018-01-29 23:35:27,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:27,901 INFO L225 Difference]: With dead ends: 198 [2018-01-29 23:35:27,901 INFO L226 Difference]: Without dead ends: 145 [2018-01-29 23:35:27,902 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=529, Invalid=877, Unknown=0, NotChecked=0, Total=1406 [2018-01-29 23:35:27,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-01-29 23:35:27,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 140. [2018-01-29 23:35:27,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-01-29 23:35:27,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 143 transitions. [2018-01-29 23:35:27,904 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 143 transitions. Word has length 124 [2018-01-29 23:35:27,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:27,904 INFO L432 AbstractCegarLoop]: Abstraction has 140 states and 143 transitions. [2018-01-29 23:35:27,904 INFO L433 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-01-29 23:35:27,904 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 143 transitions. [2018-01-29 23:35:27,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-01-29 23:35:27,904 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:27,905 INFO L350 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:27,905 INFO L371 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:27,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1214870493, now seen corresponding path program 18 times [2018-01-29 23:35:27,905 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:27,905 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:27,905 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:27,905 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:27,905 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:27,911 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:28,089 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2018-01-29 23:35:28,089 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:28,090 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 [2018-01-29 23:35:28,094 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-29 23:35:28,099 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:28,100 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:28,101 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:28,101 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:28,102 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:28,103 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:28,105 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:28,106 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:28,107 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:28,108 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:28,110 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:28,111 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:28,113 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:28,115 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:28,117 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:28,118 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:28,119 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:28,220 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2018-01-29 23:35:28,237 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:28,237 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17] total 28 [2018-01-29 23:35:28,237 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-29 23:35:28,237 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-29 23:35:28,237 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=511, Unknown=0, NotChecked=0, Total=756 [2018-01-29 23:35:28,237 INFO L87 Difference]: Start difference. First operand 140 states and 143 transitions. Second operand 28 states. [2018-01-29 23:35:28,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:28,469 INFO L93 Difference]: Finished difference Result 214 states and 221 transitions. [2018-01-29 23:35:28,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-01-29 23:35:28,470 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 134 [2018-01-29 23:35:28,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:28,470 INFO L225 Difference]: With dead ends: 214 [2018-01-29 23:35:28,470 INFO L226 Difference]: Without dead ends: 155 [2018-01-29 23:35:28,471 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=637, Invalid=1085, Unknown=0, NotChecked=0, Total=1722 [2018-01-29 23:35:28,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-01-29 23:35:28,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 150. [2018-01-29 23:35:28,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-29 23:35:28,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 153 transitions. [2018-01-29 23:35:28,472 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 153 transitions. Word has length 134 [2018-01-29 23:35:28,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:28,474 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 153 transitions. [2018-01-29 23:35:28,474 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-29 23:35:28,474 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 153 transitions. [2018-01-29 23:35:28,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-01-29 23:35:28,475 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:28,475 INFO L350 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:28,475 INFO L371 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:28,475 INFO L82 PathProgramCache]: Analyzing trace with hash -938282562, now seen corresponding path program 19 times [2018-01-29 23:35:28,475 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:28,475 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:28,476 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:28,476 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:28,476 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:28,492 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:28,677 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2018-01-29 23:35:28,677 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:28,677 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 [2018-01-29 23:35:28,685 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:35:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:28,699 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:28,721 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2018-01-29 23:35:28,738 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:28,738 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-01-29 23:35:28,738 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-01-29 23:35:28,738 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-01-29 23:35:28,738 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-01-29 23:35:28,738 INFO L87 Difference]: Start difference. First operand 150 states and 153 transitions. Second operand 22 states. [2018-01-29 23:35:28,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:28,804 INFO L93 Difference]: Finished difference Result 221 states and 227 transitions. [2018-01-29 23:35:28,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-01-29 23:35:28,807 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 144 [2018-01-29 23:35:28,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:28,808 INFO L225 Difference]: With dead ends: 221 [2018-01-29 23:35:28,808 INFO L226 Difference]: Without dead ends: 156 [2018-01-29 23:35:28,808 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-01-29 23:35:28,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-01-29 23:35:28,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 154. [2018-01-29 23:35:28,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-01-29 23:35:28,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 157 transitions. [2018-01-29 23:35:28,811 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 157 transitions. Word has length 144 [2018-01-29 23:35:28,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:28,811 INFO L432 AbstractCegarLoop]: Abstraction has 154 states and 157 transitions. [2018-01-29 23:35:28,811 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-01-29 23:35:28,811 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 157 transitions. [2018-01-29 23:35:28,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-01-29 23:35:28,811 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:28,811 INFO L350 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:28,811 INFO L371 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:28,811 INFO L82 PathProgramCache]: Analyzing trace with hash -2042390217, now seen corresponding path program 20 times [2018-01-29 23:35:28,811 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:28,812 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:28,812 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:28,812 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:35:28,812 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:28,821 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:29,028 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2018-01-29 23:35:29,029 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:29,029 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 [2018-01-29 23:35:29,033 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-29 23:35:29,037 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:29,045 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:29,046 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:29,047 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:29,060 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2018-01-29 23:35:29,084 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:29,084 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-01-29 23:35:29,084 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-29 23:35:29,085 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-29 23:35:29,085 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-01-29 23:35:29,085 INFO L87 Difference]: Start difference. First operand 154 states and 157 transitions. Second operand 23 states. [2018-01-29 23:35:29,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:29,163 INFO L93 Difference]: Finished difference Result 225 states and 231 transitions. [2018-01-29 23:35:29,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-01-29 23:35:29,164 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 148 [2018-01-29 23:35:29,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:29,165 INFO L225 Difference]: With dead ends: 225 [2018-01-29 23:35:29,165 INFO L226 Difference]: Without dead ends: 160 [2018-01-29 23:35:29,165 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-01-29 23:35:29,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-01-29 23:35:29,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2018-01-29 23:35:29,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-01-29 23:35:29,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 161 transitions. [2018-01-29 23:35:29,167 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 161 transitions. Word has length 148 [2018-01-29 23:35:29,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:29,167 INFO L432 AbstractCegarLoop]: Abstraction has 158 states and 161 transitions. [2018-01-29 23:35:29,167 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-29 23:35:29,167 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 161 transitions. [2018-01-29 23:35:29,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-01-29 23:35:29,168 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:29,168 INFO L350 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:29,168 INFO L371 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:29,168 INFO L82 PathProgramCache]: Analyzing trace with hash -462300112, now seen corresponding path program 21 times [2018-01-29 23:35:29,168 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:29,168 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:29,169 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:29,169 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:29,169 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:29,174 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:29,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 0 proven. 882 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2018-01-29 23:35:29,531 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:29,531 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 [2018-01-29 23:35:29,536 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-29 23:35:29,540 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:29,541 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:29,543 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:29,544 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:29,545 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:29,547 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:29,548 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:29,550 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:29,552 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:29,553 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:29,554 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:29,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2018-01-29 23:35:29,690 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:29,690 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 19] total 32 [2018-01-29 23:35:29,690 INFO L409 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-01-29 23:35:29,690 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-01-29 23:35:29,690 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=672, Unknown=0, NotChecked=0, Total=992 [2018-01-29 23:35:29,690 INFO L87 Difference]: Start difference. First operand 158 states and 161 transitions. Second operand 32 states. [2018-01-29 23:35:30,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:30,123 INFO L93 Difference]: Finished difference Result 238 states and 245 transitions. [2018-01-29 23:35:30,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-29 23:35:30,125 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 152 [2018-01-29 23:35:30,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:30,126 INFO L225 Difference]: With dead ends: 238 [2018-01-29 23:35:30,126 INFO L226 Difference]: Without dead ends: 173 [2018-01-29 23:35:30,127 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=832, Invalid=1424, Unknown=0, NotChecked=0, Total=2256 [2018-01-29 23:35:30,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-01-29 23:35:30,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 168. [2018-01-29 23:35:30,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-01-29 23:35:30,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 171 transitions. [2018-01-29 23:35:30,129 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 171 transitions. Word has length 152 [2018-01-29 23:35:30,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:30,129 INFO L432 AbstractCegarLoop]: Abstraction has 168 states and 171 transitions. [2018-01-29 23:35:30,129 INFO L433 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-01-29 23:35:30,129 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 171 transitions. [2018-01-29 23:35:30,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-01-29 23:35:30,130 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:30,130 INFO L350 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:30,130 INFO L371 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:30,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1844372369, now seen corresponding path program 22 times [2018-01-29 23:35:30,130 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:30,130 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:30,131 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:30,131 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:30,131 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:30,137 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:30,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1202 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2018-01-29 23:35:30,717 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:30,717 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:35:30,722 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-29 23:35:30,737 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:30,739 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:30,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1202 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2018-01-29 23:35:30,770 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:30,770 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-01-29 23:35:30,770 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-29 23:35:30,770 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-29 23:35:30,771 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-01-29 23:35:30,771 INFO L87 Difference]: Start difference. First operand 168 states and 171 transitions. Second operand 25 states. [2018-01-29 23:35:30,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:30,951 INFO L93 Difference]: Finished difference Result 245 states and 251 transitions. [2018-01-29 23:35:30,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-01-29 23:35:30,953 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 162 [2018-01-29 23:35:30,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:30,953 INFO L225 Difference]: With dead ends: 245 [2018-01-29 23:35:30,953 INFO L226 Difference]: Without dead ends: 174 [2018-01-29 23:35:30,954 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-01-29 23:35:30,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-01-29 23:35:30,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172. [2018-01-29 23:35:30,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-01-29 23:35:30,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 175 transitions. [2018-01-29 23:35:30,956 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 175 transitions. Word has length 162 [2018-01-29 23:35:30,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:30,957 INFO L432 AbstractCegarLoop]: Abstraction has 172 states and 175 transitions. [2018-01-29 23:35:30,957 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-29 23:35:30,957 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 175 transitions. [2018-01-29 23:35:30,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-01-29 23:35:30,957 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:30,957 INFO L350 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:30,957 INFO L371 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:30,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1533804234, now seen corresponding path program 23 times [2018-01-29 23:35:30,957 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:30,957 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:30,958 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:30,958 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:30,958 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:30,965 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:31,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 0 proven. 1058 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2018-01-29 23:35:31,712 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:31,712 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:35:31,717 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-29 23:35:31,721 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:31,722 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:31,723 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:31,723 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:31,724 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:31,725 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:31,726 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:31,727 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:31,728 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:31,729 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:31,731 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:31,732 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:31,734 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:31,736 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:31,739 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:31,741 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:31,745 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:31,748 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:31,752 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:31,757 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:31,762 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:31,768 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:31,781 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:31,796 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:31,796 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:31,798 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:31,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 0 proven. 1058 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2018-01-29 23:35:31,830 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:31,830 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-01-29 23:35:31,830 INFO L409 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-01-29 23:35:31,830 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-01-29 23:35:31,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-01-29 23:35:31,831 INFO L87 Difference]: Start difference. First operand 172 states and 175 transitions. Second operand 26 states. [2018-01-29 23:35:31,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:31,902 INFO L93 Difference]: Finished difference Result 249 states and 255 transitions. [2018-01-29 23:35:31,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-01-29 23:35:31,902 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 166 [2018-01-29 23:35:31,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:31,902 INFO L225 Difference]: With dead ends: 249 [2018-01-29 23:35:31,902 INFO L226 Difference]: Without dead ends: 178 [2018-01-29 23:35:31,903 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-01-29 23:35:31,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-01-29 23:35:31,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2018-01-29 23:35:31,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-01-29 23:35:31,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 179 transitions. [2018-01-29 23:35:31,905 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 179 transitions. Word has length 166 [2018-01-29 23:35:31,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:31,905 INFO L432 AbstractCegarLoop]: Abstraction has 176 states and 179 transitions. [2018-01-29 23:35:31,905 INFO L433 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-01-29 23:35:31,905 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 179 transitions. [2018-01-29 23:35:31,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-01-29 23:35:31,906 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:31,906 INFO L350 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:31,906 INFO L371 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:31,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1039739517, now seen corresponding path program 24 times [2018-01-29 23:35:31,906 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:31,906 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:31,906 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:31,907 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:31,907 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:31,912 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:32,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1386 backedges. 0 proven. 1152 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2018-01-29 23:35:32,402 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:32,402 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:35:32,406 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-29 23:35:32,412 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:32,413 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:32,414 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:32,414 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:32,415 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:32,417 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:32,418 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:32,421 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:32,423 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:32,424 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:32,426 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:32,427 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:32,429 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:32,431 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:32,433 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:32,435 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:32,438 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:32,441 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:32,444 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:32,444 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:32,446 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:32,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1386 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2018-01-29 23:35:32,574 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:32,575 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 21] total 36 [2018-01-29 23:35:32,575 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-29 23:35:32,575 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-29 23:35:32,575 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=855, Unknown=0, NotChecked=0, Total=1260 [2018-01-29 23:35:32,575 INFO L87 Difference]: Start difference. First operand 176 states and 179 transitions. Second operand 36 states. [2018-01-29 23:35:33,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:33,163 INFO L93 Difference]: Finished difference Result 262 states and 269 transitions. [2018-01-29 23:35:33,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-29 23:35:33,163 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 170 [2018-01-29 23:35:33,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:33,163 INFO L225 Difference]: With dead ends: 262 [2018-01-29 23:35:33,163 INFO L226 Difference]: Without dead ends: 191 [2018-01-29 23:35:33,164 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1053, Invalid=1809, Unknown=0, NotChecked=0, Total=2862 [2018-01-29 23:35:33,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-01-29 23:35:33,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 186. [2018-01-29 23:35:33,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-01-29 23:35:33,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 189 transitions. [2018-01-29 23:35:33,167 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 189 transitions. Word has length 170 [2018-01-29 23:35:33,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:33,167 INFO L432 AbstractCegarLoop]: Abstraction has 186 states and 189 transitions. [2018-01-29 23:35:33,167 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-29 23:35:33,167 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 189 transitions. [2018-01-29 23:35:33,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-01-29 23:35:33,167 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:33,167 INFO L350 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:33,167 INFO L371 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:33,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1382102628, now seen corresponding path program 25 times [2018-01-29 23:35:33,168 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:33,168 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:33,168 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:33,168 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:33,168 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:33,174 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:33,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1250 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-01-29 23:35:33,487 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:33,488 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:35:33,492 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:35:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:33,515 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:33,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1250 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-01-29 23:35:33,548 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:33,548 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-01-29 23:35:33,548 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-29 23:35:33,549 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-29 23:35:33,549 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-01-29 23:35:33,549 INFO L87 Difference]: Start difference. First operand 186 states and 189 transitions. Second operand 28 states. [2018-01-29 23:35:33,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:33,719 INFO L93 Difference]: Finished difference Result 269 states and 275 transitions. [2018-01-29 23:35:33,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-29 23:35:33,719 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 180 [2018-01-29 23:35:33,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:33,719 INFO L225 Difference]: With dead ends: 269 [2018-01-29 23:35:33,719 INFO L226 Difference]: Without dead ends: 192 [2018-01-29 23:35:33,720 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-01-29 23:35:33,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-01-29 23:35:33,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 190. [2018-01-29 23:35:33,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-01-29 23:35:33,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 193 transitions. [2018-01-29 23:35:33,722 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 193 transitions. Word has length 180 [2018-01-29 23:35:33,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:33,722 INFO L432 AbstractCegarLoop]: Abstraction has 190 states and 193 transitions. [2018-01-29 23:35:33,723 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-29 23:35:33,723 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 193 transitions. [2018-01-29 23:35:33,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-01-29 23:35:33,723 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:33,723 INFO L350 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:33,723 INFO L371 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:33,723 INFO L82 PathProgramCache]: Analyzing trace with hash 2111657309, now seen corresponding path program 26 times [2018-01-29 23:35:33,723 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:33,723 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:33,724 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:33,724 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:35:33,724 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:33,736 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:36,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1642 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-01-29 23:35:36,802 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:36,802 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:35:36,807 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-29 23:35:36,813 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:36,831 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:36,843 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:36,845 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:36,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1642 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-01-29 23:35:36,879 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:36,879 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-01-29 23:35:36,879 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-29 23:35:36,879 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-29 23:35:36,879 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-01-29 23:35:36,879 INFO L87 Difference]: Start difference. First operand 190 states and 193 transitions. Second operand 29 states. [2018-01-29 23:35:37,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:37,308 INFO L93 Difference]: Finished difference Result 273 states and 279 transitions. [2018-01-29 23:35:37,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-01-29 23:35:37,308 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 184 [2018-01-29 23:35:37,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:37,309 INFO L225 Difference]: With dead ends: 273 [2018-01-29 23:35:37,309 INFO L226 Difference]: Without dead ends: 196 [2018-01-29 23:35:37,309 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-01-29 23:35:37,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-01-29 23:35:37,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2018-01-29 23:35:37,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-01-29 23:35:37,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 197 transitions. [2018-01-29 23:35:37,312 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 197 transitions. Word has length 184 [2018-01-29 23:35:37,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:37,312 INFO L432 AbstractCegarLoop]: Abstraction has 194 states and 197 transitions. [2018-01-29 23:35:37,312 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-29 23:35:37,312 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 197 transitions. [2018-01-29 23:35:37,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-01-29 23:35:37,312 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:37,312 INFO L350 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:37,312 INFO L371 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:37,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1070550998, now seen corresponding path program 27 times [2018-01-29 23:35:37,319 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:37,319 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:37,320 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:37,320 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:37,320 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:37,331 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:37,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1748 backedges. 0 proven. 1458 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-01-29 23:35:37,752 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:37,752 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:35:37,761 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-29 23:35:37,766 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:37,768 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:37,770 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:37,771 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:37,772 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:37,774 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:37,775 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:37,777 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:37,780 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:37,782 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:37,785 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:37,785 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:37,787 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:37,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1748 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2018-01-29 23:35:37,910 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:37,910 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 23] total 40 [2018-01-29 23:35:37,911 INFO L409 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-01-29 23:35:37,911 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-01-29 23:35:37,911 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=1060, Unknown=0, NotChecked=0, Total=1560 [2018-01-29 23:35:37,911 INFO L87 Difference]: Start difference. First operand 194 states and 197 transitions. Second operand 40 states. [2018-01-29 23:35:38,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:38,235 INFO L93 Difference]: Finished difference Result 286 states and 293 transitions. [2018-01-29 23:35:38,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-01-29 23:35:38,235 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 188 [2018-01-29 23:35:38,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:38,236 INFO L225 Difference]: With dead ends: 286 [2018-01-29 23:35:38,236 INFO L226 Difference]: Without dead ends: 209 [2018-01-29 23:35:38,237 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1300, Invalid=2240, Unknown=0, NotChecked=0, Total=3540 [2018-01-29 23:35:38,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-01-29 23:35:38,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 204. [2018-01-29 23:35:38,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-01-29 23:35:38,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 207 transitions. [2018-01-29 23:35:38,240 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 207 transitions. Word has length 188 [2018-01-29 23:35:38,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:38,240 INFO L432 AbstractCegarLoop]: Abstraction has 204 states and 207 transitions. [2018-01-29 23:35:38,240 INFO L433 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-01-29 23:35:38,240 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 207 transitions. [2018-01-29 23:35:38,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-01-29 23:35:38,240 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:38,240 INFO L350 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:38,241 INFO L371 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:38,241 INFO L82 PathProgramCache]: Analyzing trace with hash -2087134665, now seen corresponding path program 28 times [2018-01-29 23:35:38,241 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:38,241 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:38,241 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:38,241 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:38,241 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:38,249 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:38,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1920 backedges. 0 proven. 1568 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2018-01-29 23:35:38,738 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:38,739 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:35:38,743 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-29 23:35:38,771 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:38,773 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:38,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1920 backedges. 0 proven. 1568 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2018-01-29 23:35:38,809 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:38,809 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-01-29 23:35:38,809 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-29 23:35:38,809 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-29 23:35:38,810 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-01-29 23:35:38,810 INFO L87 Difference]: Start difference. First operand 204 states and 207 transitions. Second operand 31 states. [2018-01-29 23:35:38,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:38,927 INFO L93 Difference]: Finished difference Result 293 states and 299 transitions. [2018-01-29 23:35:38,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-01-29 23:35:38,928 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 198 [2018-01-29 23:35:38,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:38,928 INFO L225 Difference]: With dead ends: 293 [2018-01-29 23:35:38,928 INFO L226 Difference]: Without dead ends: 210 [2018-01-29 23:35:38,929 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-01-29 23:35:38,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-01-29 23:35:38,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 208. [2018-01-29 23:35:38,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-01-29 23:35:38,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 211 transitions. [2018-01-29 23:35:38,931 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 211 transitions. Word has length 198 [2018-01-29 23:35:38,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:38,931 INFO L432 AbstractCegarLoop]: Abstraction has 208 states and 211 transitions. [2018-01-29 23:35:38,931 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-29 23:35:38,932 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 211 transitions. [2018-01-29 23:35:38,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-01-29 23:35:38,932 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:38,932 INFO L350 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:38,932 INFO L371 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:38,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1245875440, now seen corresponding path program 29 times [2018-01-29 23:35:38,932 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:38,933 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:38,933 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:38,933 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:38,933 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:38,940 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:39,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2034 backedges. 0 proven. 1682 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2018-01-29 23:35:39,311 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:39,311 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:35:39,315 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-29 23:35:39,321 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,323 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,323 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,324 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,325 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,326 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,327 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,328 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,329 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,330 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,332 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,333 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,335 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,337 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,339 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,342 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,344 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,347 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,351 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,355 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,360 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,366 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,371 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,378 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,386 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,394 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,403 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,414 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,425 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,447 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:39,448 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:39,450 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:39,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2034 backedges. 0 proven. 1682 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2018-01-29 23:35:39,487 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:39,487 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-01-29 23:35:39,488 INFO L409 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-01-29 23:35:39,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-01-29 23:35:39,488 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-01-29 23:35:39,488 INFO L87 Difference]: Start difference. First operand 208 states and 211 transitions. Second operand 32 states. [2018-01-29 23:35:40,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:40,394 INFO L93 Difference]: Finished difference Result 297 states and 303 transitions. [2018-01-29 23:35:40,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-01-29 23:35:40,395 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 202 [2018-01-29 23:35:40,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:40,395 INFO L225 Difference]: With dead ends: 297 [2018-01-29 23:35:40,395 INFO L226 Difference]: Without dead ends: 214 [2018-01-29 23:35:40,396 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-01-29 23:35:40,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-01-29 23:35:40,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 212. [2018-01-29 23:35:40,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-01-29 23:35:40,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 215 transitions. [2018-01-29 23:35:40,398 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 215 transitions. Word has length 202 [2018-01-29 23:35:40,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:40,398 INFO L432 AbstractCegarLoop]: Abstraction has 212 states and 215 transitions. [2018-01-29 23:35:40,398 INFO L433 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-01-29 23:35:40,398 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 215 transitions. [2018-01-29 23:35:40,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-01-29 23:35:40,399 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:40,399 INFO L350 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:40,399 INFO L371 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:40,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1794259753, now seen corresponding path program 30 times [2018-01-29 23:35:40,399 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:40,399 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:40,400 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:40,400 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:40,400 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:40,406 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:41,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2152 backedges. 0 proven. 1800 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2018-01-29 23:35:41,158 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:41,158 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:35:41,163 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-29 23:35:41,173 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:41,175 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:41,176 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:41,177 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:41,178 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:41,179 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:41,180 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:41,181 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:41,182 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:41,183 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:41,185 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:41,186 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:41,188 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:41,190 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:41,192 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:41,195 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:41,197 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:41,200 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:41,203 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:41,206 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:41,209 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:41,213 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:41,217 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:41,217 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:41,219 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:41,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2152 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2018-01-29 23:35:41,369 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:41,369 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 25] total 44 [2018-01-29 23:35:41,369 INFO L409 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-01-29 23:35:41,369 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-01-29 23:35:41,370 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=605, Invalid=1287, Unknown=0, NotChecked=0, Total=1892 [2018-01-29 23:35:41,370 INFO L87 Difference]: Start difference. First operand 212 states and 215 transitions. Second operand 44 states. [2018-01-29 23:35:41,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:41,683 INFO L93 Difference]: Finished difference Result 310 states and 317 transitions. [2018-01-29 23:35:41,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-01-29 23:35:41,683 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 206 [2018-01-29 23:35:41,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:41,684 INFO L225 Difference]: With dead ends: 310 [2018-01-29 23:35:41,684 INFO L226 Difference]: Without dead ends: 227 [2018-01-29 23:35:41,685 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1573, Invalid=2717, Unknown=0, NotChecked=0, Total=4290 [2018-01-29 23:35:41,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-01-29 23:35:41,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 222. [2018-01-29 23:35:41,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-01-29 23:35:41,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 225 transitions. [2018-01-29 23:35:41,688 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 225 transitions. Word has length 206 [2018-01-29 23:35:41,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:41,688 INFO L432 AbstractCegarLoop]: Abstraction has 222 states and 225 transitions. [2018-01-29 23:35:41,688 INFO L433 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-01-29 23:35:41,688 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 225 transitions. [2018-01-29 23:35:41,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-01-29 23:35:41,689 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:41,689 INFO L350 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:41,689 INFO L371 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:41,689 INFO L82 PathProgramCache]: Analyzing trace with hash 927252234, now seen corresponding path program 31 times [2018-01-29 23:35:41,689 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:41,689 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:41,690 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:41,690 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:41,690 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:41,696 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:42,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2342 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-01-29 23:35:42,345 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:42,345 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:35:42,350 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:35:42,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:42,368 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:42,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2342 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-01-29 23:35:42,406 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:42,406 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-01-29 23:35:42,406 INFO L409 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-01-29 23:35:42,406 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-01-29 23:35:42,406 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-01-29 23:35:42,407 INFO L87 Difference]: Start difference. First operand 222 states and 225 transitions. Second operand 34 states. [2018-01-29 23:35:42,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:42,544 INFO L93 Difference]: Finished difference Result 317 states and 323 transitions. [2018-01-29 23:35:42,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-29 23:35:42,544 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 216 [2018-01-29 23:35:42,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:42,545 INFO L225 Difference]: With dead ends: 317 [2018-01-29 23:35:42,545 INFO L226 Difference]: Without dead ends: 228 [2018-01-29 23:35:42,545 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-01-29 23:35:42,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-01-29 23:35:42,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 226. [2018-01-29 23:35:42,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-01-29 23:35:42,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 229 transitions. [2018-01-29 23:35:42,547 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 229 transitions. Word has length 216 [2018-01-29 23:35:42,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:42,547 INFO L432 AbstractCegarLoop]: Abstraction has 226 states and 229 transitions. [2018-01-29 23:35:42,547 INFO L433 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-01-29 23:35:42,547 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 229 transitions. [2018-01-29 23:35:42,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-01-29 23:35:42,548 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:42,548 INFO L350 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:42,548 INFO L371 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:42,548 INFO L82 PathProgramCache]: Analyzing trace with hash 499553667, now seen corresponding path program 32 times [2018-01-29 23:35:42,548 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:42,548 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:42,549 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:42,549 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:35:42,549 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:42,555 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:42,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2468 backedges. 0 proven. 2048 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-01-29 23:35:42,998 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:42,998 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:35:43,007 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-29 23:35:43,015 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:43,026 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:43,028 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:43,029 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:43,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2468 backedges. 0 proven. 2048 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-01-29 23:35:43,071 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:43,071 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-01-29 23:35:43,071 INFO L409 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-01-29 23:35:43,072 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-01-29 23:35:43,072 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-01-29 23:35:43,072 INFO L87 Difference]: Start difference. First operand 226 states and 229 transitions. Second operand 35 states. [2018-01-29 23:35:43,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:43,192 INFO L93 Difference]: Finished difference Result 321 states and 327 transitions. [2018-01-29 23:35:43,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-01-29 23:35:43,193 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 220 [2018-01-29 23:35:43,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:43,193 INFO L225 Difference]: With dead ends: 321 [2018-01-29 23:35:43,193 INFO L226 Difference]: Without dead ends: 232 [2018-01-29 23:35:43,194 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-01-29 23:35:43,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-01-29 23:35:43,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 230. [2018-01-29 23:35:43,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-01-29 23:35:43,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 233 transitions. [2018-01-29 23:35:43,196 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 233 transitions. Word has length 220 [2018-01-29 23:35:43,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:43,196 INFO L432 AbstractCegarLoop]: Abstraction has 230 states and 233 transitions. [2018-01-29 23:35:43,196 INFO L433 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-01-29 23:35:43,196 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 233 transitions. [2018-01-29 23:35:43,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-01-29 23:35:43,197 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:43,197 INFO L350 BasicCegarLoop]: trace histogram [34, 33, 33, 33, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:43,197 INFO L371 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:43,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1441364100, now seen corresponding path program 33 times [2018-01-29 23:35:43,197 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:43,197 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:43,198 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:43,198 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:43,198 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:43,204 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:43,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2598 backedges. 0 proven. 2178 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-01-29 23:35:43,807 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:43,807 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:35:43,811 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-29 23:35:43,816 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:43,817 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:43,818 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:43,820 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:43,821 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:43,822 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:43,824 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:43,826 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:43,828 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:43,831 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:43,833 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:43,836 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:43,840 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:43,840 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:43,842 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:44,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2598 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2018-01-29 23:35:44,026 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:44,026 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 27] total 48 [2018-01-29 23:35:44,026 INFO L409 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-01-29 23:35:44,026 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-01-29 23:35:44,027 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=720, Invalid=1536, Unknown=0, NotChecked=0, Total=2256 [2018-01-29 23:35:44,027 INFO L87 Difference]: Start difference. First operand 230 states and 233 transitions. Second operand 48 states. [2018-01-29 23:35:45,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:45,846 INFO L93 Difference]: Finished difference Result 334 states and 341 transitions. [2018-01-29 23:35:45,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-01-29 23:35:45,846 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 224 [2018-01-29 23:35:45,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:45,847 INFO L225 Difference]: With dead ends: 334 [2018-01-29 23:35:45,847 INFO L226 Difference]: Without dead ends: 245 [2018-01-29 23:35:45,848 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1872, Invalid=3240, Unknown=0, NotChecked=0, Total=5112 [2018-01-29 23:35:45,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-01-29 23:35:45,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 240. [2018-01-29 23:35:45,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-01-29 23:35:45,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 243 transitions. [2018-01-29 23:35:45,861 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 243 transitions. Word has length 224 [2018-01-29 23:35:45,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:45,861 INFO L432 AbstractCegarLoop]: Abstraction has 240 states and 243 transitions. [2018-01-29 23:35:45,861 INFO L433 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-01-29 23:35:45,861 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 243 transitions. [2018-01-29 23:35:45,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-01-29 23:35:45,862 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:45,862 INFO L350 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:45,862 INFO L371 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:45,863 INFO L82 PathProgramCache]: Analyzing trace with hash -174861091, now seen corresponding path program 34 times [2018-01-29 23:35:45,863 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:45,863 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:45,863 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:45,863 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:45,863 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:45,870 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:46,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2806 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2018-01-29 23:35:46,938 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:46,938 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:35:46,943 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-29 23:35:46,969 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:46,971 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2806 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2018-01-29 23:35:47,013 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:47,013 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-01-29 23:35:47,013 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-29 23:35:47,013 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-29 23:35:47,014 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-01-29 23:35:47,014 INFO L87 Difference]: Start difference. First operand 240 states and 243 transitions. Second operand 37 states. [2018-01-29 23:35:47,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:47,112 INFO L93 Difference]: Finished difference Result 341 states and 347 transitions. [2018-01-29 23:35:47,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-01-29 23:35:47,112 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 234 [2018-01-29 23:35:47,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:47,113 INFO L225 Difference]: With dead ends: 341 [2018-01-29 23:35:47,113 INFO L226 Difference]: Without dead ends: 246 [2018-01-29 23:35:47,113 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-01-29 23:35:47,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-01-29 23:35:47,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 244. [2018-01-29 23:35:47,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-01-29 23:35:47,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 247 transitions. [2018-01-29 23:35:47,116 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 247 transitions. Word has length 234 [2018-01-29 23:35:47,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:47,116 INFO L432 AbstractCegarLoop]: Abstraction has 244 states and 247 transitions. [2018-01-29 23:35:47,116 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-29 23:35:47,116 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 247 transitions. [2018-01-29 23:35:47,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-01-29 23:35:47,117 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:47,117 INFO L350 BasicCegarLoop]: trace histogram [36, 35, 35, 35, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:47,117 INFO L371 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:47,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1091854102, now seen corresponding path program 35 times [2018-01-29 23:35:47,117 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:47,117 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:47,118 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:47,118 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:47,118 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:47,126 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:47,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2944 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2018-01-29 23:35:47,781 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:47,781 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:35:47,785 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-29 23:35:47,790 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,791 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,791 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,792 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,793 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,794 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,795 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,796 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,797 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,798 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,799 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,801 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,803 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,805 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,807 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,810 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,812 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,815 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,819 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,823 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,827 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,831 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,837 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,843 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,850 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,858 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,867 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,876 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,887 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,899 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,911 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,926 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,942 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,960 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:47,980 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:48,017 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:48,018 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:48,020 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:48,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2944 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2018-01-29 23:35:48,063 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:48,064 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-01-29 23:35:48,064 INFO L409 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-01-29 23:35:48,064 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-01-29 23:35:48,064 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-01-29 23:35:48,064 INFO L87 Difference]: Start difference. First operand 244 states and 247 transitions. Second operand 38 states. [2018-01-29 23:35:48,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:48,207 INFO L93 Difference]: Finished difference Result 345 states and 351 transitions. [2018-01-29 23:35:48,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-01-29 23:35:48,208 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 238 [2018-01-29 23:35:48,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:48,208 INFO L225 Difference]: With dead ends: 345 [2018-01-29 23:35:48,208 INFO L226 Difference]: Without dead ends: 250 [2018-01-29 23:35:48,209 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-01-29 23:35:48,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-01-29 23:35:48,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2018-01-29 23:35:48,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-01-29 23:35:48,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 251 transitions. [2018-01-29 23:35:48,211 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 251 transitions. Word has length 238 [2018-01-29 23:35:48,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:48,211 INFO L432 AbstractCegarLoop]: Abstraction has 248 states and 251 transitions. [2018-01-29 23:35:48,211 INFO L433 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-01-29 23:35:48,211 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 251 transitions. [2018-01-29 23:35:48,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-01-29 23:35:48,212 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:48,212 INFO L350 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:48,212 INFO L371 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:48,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1751327951, now seen corresponding path program 36 times [2018-01-29 23:35:48,212 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:48,212 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:48,214 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:48,214 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:48,214 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:48,220 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:48,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3086 backedges. 0 proven. 2592 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2018-01-29 23:35:48,814 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:48,814 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:35:48,820 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-29 23:35:48,826 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:48,827 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:48,828 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:48,829 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:48,830 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:48,831 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:48,832 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:48,833 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:48,834 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:48,836 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:48,837 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:48,839 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:48,840 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:48,842 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:48,845 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:48,847 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:48,850 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:48,852 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:48,855 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:48,858 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:48,862 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:48,865 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:48,869 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:48,873 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:48,878 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:48,883 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:48,888 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:48,889 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:48,890 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:49,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3086 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2018-01-29 23:35:49,170 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:49,171 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 29] total 52 [2018-01-29 23:35:49,171 INFO L409 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-01-29 23:35:49,171 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-01-29 23:35:49,171 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=845, Invalid=1807, Unknown=0, NotChecked=0, Total=2652 [2018-01-29 23:35:49,172 INFO L87 Difference]: Start difference. First operand 248 states and 251 transitions. Second operand 52 states. [2018-01-29 23:35:49,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:49,564 INFO L93 Difference]: Finished difference Result 358 states and 365 transitions. [2018-01-29 23:35:49,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-01-29 23:35:49,564 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 242 [2018-01-29 23:35:49,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:49,565 INFO L225 Difference]: With dead ends: 358 [2018-01-29 23:35:49,565 INFO L226 Difference]: Without dead ends: 263 [2018-01-29 23:35:49,566 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2197, Invalid=3809, Unknown=0, NotChecked=0, Total=6006 [2018-01-29 23:35:49,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-01-29 23:35:49,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 258. [2018-01-29 23:35:49,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2018-01-29 23:35:49,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 261 transitions. [2018-01-29 23:35:49,568 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 261 transitions. Word has length 242 [2018-01-29 23:35:49,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:49,569 INFO L432 AbstractCegarLoop]: Abstraction has 258 states and 261 transitions. [2018-01-29 23:35:49,569 INFO L433 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-01-29 23:35:49,569 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 261 transitions. [2018-01-29 23:35:49,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-01-29 23:35:49,569 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:49,570 INFO L350 BasicCegarLoop]: trace histogram [38, 37, 37, 37, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:49,570 INFO L371 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:49,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1003156560, now seen corresponding path program 37 times [2018-01-29 23:35:49,570 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:49,570 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:49,570 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:49,570 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:49,570 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:49,577 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:50,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3312 backedges. 0 proven. 2738 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2018-01-29 23:35:50,132 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:50,132 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:35:50,136 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:35:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:50,162 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:50,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3312 backedges. 0 proven. 2738 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2018-01-29 23:35:50,208 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:50,208 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-01-29 23:35:50,209 INFO L409 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-01-29 23:35:50,209 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-01-29 23:35:50,209 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-01-29 23:35:50,209 INFO L87 Difference]: Start difference. First operand 258 states and 261 transitions. Second operand 40 states. [2018-01-29 23:35:50,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:50,350 INFO L93 Difference]: Finished difference Result 365 states and 371 transitions. [2018-01-29 23:35:50,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-29 23:35:50,350 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 252 [2018-01-29 23:35:50,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:50,351 INFO L225 Difference]: With dead ends: 365 [2018-01-29 23:35:50,351 INFO L226 Difference]: Without dead ends: 264 [2018-01-29 23:35:50,351 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-01-29 23:35:50,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2018-01-29 23:35:50,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262. [2018-01-29 23:35:50,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2018-01-29 23:35:50,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 265 transitions. [2018-01-29 23:35:50,353 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 265 transitions. Word has length 252 [2018-01-29 23:35:50,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:50,354 INFO L432 AbstractCegarLoop]: Abstraction has 262 states and 265 transitions. [2018-01-29 23:35:50,354 INFO L433 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-01-29 23:35:50,354 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 265 transitions. [2018-01-29 23:35:50,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-01-29 23:35:50,354 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:50,354 INFO L350 BasicCegarLoop]: trace histogram [39, 38, 38, 38, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:50,354 INFO L371 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:50,355 INFO L82 PathProgramCache]: Analyzing trace with hash -749282903, now seen corresponding path program 38 times [2018-01-29 23:35:50,355 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:50,355 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:50,355 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:50,355 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:35:50,355 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:50,361 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:50,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3462 backedges. 0 proven. 2888 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2018-01-29 23:35:50,928 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:50,928 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:35:50,932 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-29 23:35:50,941 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:50,953 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:50,956 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:50,958 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:50,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3462 backedges. 0 proven. 2888 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2018-01-29 23:35:51,014 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:51,015 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-01-29 23:35:51,015 INFO L409 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-01-29 23:35:51,015 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-01-29 23:35:51,015 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-01-29 23:35:51,015 INFO L87 Difference]: Start difference. First operand 262 states and 265 transitions. Second operand 41 states. [2018-01-29 23:35:51,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:51,193 INFO L93 Difference]: Finished difference Result 369 states and 375 transitions. [2018-01-29 23:35:51,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-01-29 23:35:51,194 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 256 [2018-01-29 23:35:51,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:51,194 INFO L225 Difference]: With dead ends: 369 [2018-01-29 23:35:51,194 INFO L226 Difference]: Without dead ends: 268 [2018-01-29 23:35:51,195 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-01-29 23:35:51,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-01-29 23:35:51,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 266. [2018-01-29 23:35:51,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2018-01-29 23:35:51,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 269 transitions. [2018-01-29 23:35:51,197 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 269 transitions. Word has length 256 [2018-01-29 23:35:51,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:51,197 INFO L432 AbstractCegarLoop]: Abstraction has 266 states and 269 transitions. [2018-01-29 23:35:51,197 INFO L433 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-01-29 23:35:51,197 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 269 transitions. [2018-01-29 23:35:51,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-01-29 23:35:51,198 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:51,198 INFO L350 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:51,198 INFO L371 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:51,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1065417950, now seen corresponding path program 39 times [2018-01-29 23:35:51,198 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:51,198 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:51,198 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:51,199 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:51,199 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:51,205 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:51,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3616 backedges. 0 proven. 3042 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2018-01-29 23:35:51,708 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:51,708 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:35:51,716 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-29 23:35:51,724 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:51,725 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:51,727 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:51,728 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:51,730 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:51,733 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:51,735 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:51,737 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:51,739 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:51,754 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:51,767 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:51,777 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:51,790 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:51,804 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:51,817 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:35:51,833 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:51,835 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:52,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3616 backedges. 0 proven. 574 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2018-01-29 23:35:52,557 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:52,557 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 31] total 56 [2018-01-29 23:35:52,557 INFO L409 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-01-29 23:35:52,558 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-01-29 23:35:52,558 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=980, Invalid=2100, Unknown=0, NotChecked=0, Total=3080 [2018-01-29 23:35:52,558 INFO L87 Difference]: Start difference. First operand 266 states and 269 transitions. Second operand 56 states. [2018-01-29 23:35:52,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:52,999 INFO L93 Difference]: Finished difference Result 382 states and 389 transitions. [2018-01-29 23:35:53,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-01-29 23:35:53,000 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 260 [2018-01-29 23:35:53,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:53,000 INFO L225 Difference]: With dead ends: 382 [2018-01-29 23:35:53,000 INFO L226 Difference]: Without dead ends: 281 [2018-01-29 23:35:53,001 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2548, Invalid=4424, Unknown=0, NotChecked=0, Total=6972 [2018-01-29 23:35:53,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-01-29 23:35:53,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 276. [2018-01-29 23:35:53,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2018-01-29 23:35:53,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 279 transitions. [2018-01-29 23:35:53,003 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 279 transitions. Word has length 260 [2018-01-29 23:35:53,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:53,003 INFO L432 AbstractCegarLoop]: Abstraction has 276 states and 279 transitions. [2018-01-29 23:35:53,003 INFO L433 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-01-29 23:35:53,004 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 279 transitions. [2018-01-29 23:35:53,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-01-29 23:35:53,004 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:53,004 INFO L350 BasicCegarLoop]: trace histogram [41, 40, 40, 40, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:53,004 INFO L371 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:53,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1364677507, now seen corresponding path program 40 times [2018-01-29 23:35:53,005 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:53,005 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:53,005 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:53,005 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:53,005 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:53,012 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:53,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3860 backedges. 0 proven. 3200 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-01-29 23:35:53,591 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:53,591 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:35:53,596 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-29 23:35:53,625 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:53,627 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:54,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3860 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2018-01-29 23:35:54,754 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:54,755 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 33] total 58 [2018-01-29 23:35:54,755 INFO L409 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-01-29 23:35:54,755 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-01-29 23:35:54,755 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1038, Invalid=2268, Unknown=0, NotChecked=0, Total=3306 [2018-01-29 23:35:54,755 INFO L87 Difference]: Start difference. First operand 276 states and 279 transitions. Second operand 58 states. [2018-01-29 23:35:55,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:55,228 INFO L93 Difference]: Finished difference Result 398 states and 405 transitions. [2018-01-29 23:35:55,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-01-29 23:35:55,228 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 270 [2018-01-29 23:35:55,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:55,229 INFO L225 Difference]: With dead ends: 398 [2018-01-29 23:35:55,229 INFO L226 Difference]: Without dead ends: 291 [2018-01-29 23:35:55,230 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2778, Invalid=4878, Unknown=0, NotChecked=0, Total=7656 [2018-01-29 23:35:55,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-01-29 23:35:55,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 286. [2018-01-29 23:35:55,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2018-01-29 23:35:55,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 289 transitions. [2018-01-29 23:35:55,232 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 289 transitions. Word has length 270 [2018-01-29 23:35:55,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:55,232 INFO L432 AbstractCegarLoop]: Abstraction has 286 states and 289 transitions. [2018-01-29 23:35:55,232 INFO L433 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-01-29 23:35:55,232 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 289 transitions. [2018-01-29 23:35:55,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-01-29 23:35:55,233 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:55,233 INFO L350 BasicCegarLoop]: trace histogram [42, 41, 41, 41, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:55,233 INFO L371 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:55,233 INFO L82 PathProgramCache]: Analyzing trace with hash 2127848420, now seen corresponding path program 41 times [2018-01-29 23:35:55,233 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:55,234 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:55,234 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:55,234 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:55,234 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:55,241 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:55,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4114 backedges. 0 proven. 3362 refuted. 0 times theorem prover too weak. 752 trivial. 0 not checked. [2018-01-29 23:35:55,931 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:55,931 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:35:55,936 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-29 23:35:55,941 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:55,942 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:55,942 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:55,943 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:55,944 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:55,945 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:55,945 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:55,946 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:55,952 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:55,954 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:55,955 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:55,957 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:55,958 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:55,960 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:55,963 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:55,965 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:55,968 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:55,971 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:55,974 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:55,978 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:55,982 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:55,987 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:55,992 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:55,998 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:56,004 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:56,011 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:56,020 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:56,029 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:56,039 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:56,050 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:56,063 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:56,076 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:56,092 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:56,108 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:56,128 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:56,149 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:56,172 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:56,196 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:56,222 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:56,251 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:56,281 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:56,363 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:56,364 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:56,367 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:56,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4114 backedges. 0 proven. 3362 refuted. 0 times theorem prover too weak. 752 trivial. 0 not checked. [2018-01-29 23:35:56,426 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:56,426 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-01-29 23:35:56,427 INFO L409 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-01-29 23:35:56,427 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-01-29 23:35:56,427 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-01-29 23:35:56,427 INFO L87 Difference]: Start difference. First operand 286 states and 289 transitions. Second operand 44 states. [2018-01-29 23:35:56,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:56,600 INFO L93 Difference]: Finished difference Result 405 states and 411 transitions. [2018-01-29 23:35:56,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-01-29 23:35:56,601 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 280 [2018-01-29 23:35:56,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:56,602 INFO L225 Difference]: With dead ends: 405 [2018-01-29 23:35:56,602 INFO L226 Difference]: Without dead ends: 292 [2018-01-29 23:35:56,602 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-01-29 23:35:56,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-01-29 23:35:56,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 290. [2018-01-29 23:35:56,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-01-29 23:35:56,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 293 transitions. [2018-01-29 23:35:56,605 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 293 transitions. Word has length 280 [2018-01-29 23:35:56,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:56,605 INFO L432 AbstractCegarLoop]: Abstraction has 290 states and 293 transitions. [2018-01-29 23:35:56,605 INFO L433 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-01-29 23:35:56,605 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 293 transitions. [2018-01-29 23:35:56,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-01-29 23:35:56,606 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:56,606 INFO L350 BasicCegarLoop]: trace histogram [43, 42, 42, 42, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:56,606 INFO L371 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:56,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1423576483, now seen corresponding path program 42 times [2018-01-29 23:35:56,606 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:56,606 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:56,607 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:56,607 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:56,607 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:56,613 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:57,226 INFO L134 CoverageAnalysis]: Checked inductivity of 4280 backedges. 0 proven. 3528 refuted. 0 times theorem prover too weak. 752 trivial. 0 not checked. [2018-01-29 23:35:57,226 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:57,226 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:35:57,231 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-29 23:35:57,237 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,238 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,239 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,240 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,241 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,242 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,243 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,244 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,245 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,246 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,248 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,250 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,251 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,253 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,256 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,258 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,261 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,263 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,266 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,270 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,273 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,277 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,280 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,285 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,289 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,294 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,300 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,306 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,312 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,320 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,327 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,335 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,343 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:35:57,344 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:57,346 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:57,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4280 backedges. 0 proven. 752 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2018-01-29 23:35:57,639 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:57,639 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 35] total 61 [2018-01-29 23:35:57,640 INFO L409 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-01-29 23:35:57,640 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-01-29 23:35:57,640 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1142, Invalid=2518, Unknown=0, NotChecked=0, Total=3660 [2018-01-29 23:35:57,640 INFO L87 Difference]: Start difference. First operand 290 states and 293 transitions. Second operand 61 states. [2018-01-29 23:35:58,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:58,124 INFO L93 Difference]: Finished difference Result 418 states and 425 transitions. [2018-01-29 23:35:58,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-01-29 23:35:58,124 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 284 [2018-01-29 23:35:58,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:58,125 INFO L225 Difference]: With dead ends: 418 [2018-01-29 23:35:58,125 INFO L226 Difference]: Without dead ends: 305 [2018-01-29 23:35:58,126 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1168 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=3094, Invalid=5462, Unknown=0, NotChecked=0, Total=8556 [2018-01-29 23:35:58,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-01-29 23:35:58,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 300. [2018-01-29 23:35:58,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2018-01-29 23:35:58,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 303 transitions. [2018-01-29 23:35:58,129 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 303 transitions. Word has length 284 [2018-01-29 23:35:58,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:58,129 INFO L432 AbstractCegarLoop]: Abstraction has 300 states and 303 transitions. [2018-01-29 23:35:58,129 INFO L433 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-01-29 23:35:58,129 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 303 transitions. [2018-01-29 23:35:58,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-01-29 23:35:58,130 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:58,130 INFO L350 BasicCegarLoop]: trace histogram [44, 43, 43, 43, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:58,130 INFO L371 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:58,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1538404482, now seen corresponding path program 43 times [2018-01-29 23:35:58,130 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:58,130 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:58,130 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:58,130 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:58,131 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:58,137 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:58,757 INFO L134 CoverageAnalysis]: Checked inductivity of 4548 backedges. 0 proven. 3698 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2018-01-29 23:35:58,757 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:58,757 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:35:58,761 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:35:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:58,790 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:58,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4548 backedges. 0 proven. 3698 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2018-01-29 23:35:58,841 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:58,841 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-01-29 23:35:58,841 INFO L409 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-01-29 23:35:58,842 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-01-29 23:35:58,842 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-01-29 23:35:58,842 INFO L87 Difference]: Start difference. First operand 300 states and 303 transitions. Second operand 46 states. [2018-01-29 23:35:58,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:58,981 INFO L93 Difference]: Finished difference Result 425 states and 431 transitions. [2018-01-29 23:35:58,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-01-29 23:35:58,981 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 294 [2018-01-29 23:35:58,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:58,982 INFO L225 Difference]: With dead ends: 425 [2018-01-29 23:35:58,982 INFO L226 Difference]: Without dead ends: 306 [2018-01-29 23:35:58,983 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-01-29 23:35:58,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2018-01-29 23:35:58,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 304. [2018-01-29 23:35:58,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-01-29 23:35:58,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 307 transitions. [2018-01-29 23:35:58,985 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 307 transitions. Word has length 294 [2018-01-29 23:35:58,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:58,985 INFO L432 AbstractCegarLoop]: Abstraction has 304 states and 307 transitions. [2018-01-29 23:35:58,985 INFO L433 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-01-29 23:35:58,985 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 307 transitions. [2018-01-29 23:35:58,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-01-29 23:35:58,986 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:58,986 INFO L350 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:58,986 INFO L371 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:58,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1669065161, now seen corresponding path program 44 times [2018-01-29 23:35:58,986 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:58,986 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:58,987 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:58,987 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:35:58,987 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:58,993 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:35:59,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4722 backedges. 0 proven. 3872 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2018-01-29 23:35:59,705 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:35:59,705 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:35:59,709 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-29 23:35:59,716 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:59,743 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:35:59,746 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:35:59,748 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:35:59,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4722 backedges. 0 proven. 3872 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2018-01-29 23:35:59,805 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:35:59,805 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-01-29 23:35:59,805 INFO L409 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-01-29 23:35:59,805 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-01-29 23:35:59,805 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-01-29 23:35:59,806 INFO L87 Difference]: Start difference. First operand 304 states and 307 transitions. Second operand 47 states. [2018-01-29 23:35:59,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:35:59,904 INFO L93 Difference]: Finished difference Result 429 states and 435 transitions. [2018-01-29 23:35:59,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-01-29 23:35:59,904 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 298 [2018-01-29 23:35:59,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:35:59,905 INFO L225 Difference]: With dead ends: 429 [2018-01-29 23:35:59,905 INFO L226 Difference]: Without dead ends: 310 [2018-01-29 23:35:59,905 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-01-29 23:35:59,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2018-01-29 23:35:59,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 308. [2018-01-29 23:35:59,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2018-01-29 23:35:59,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 311 transitions. [2018-01-29 23:35:59,907 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 311 transitions. Word has length 298 [2018-01-29 23:35:59,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:35:59,908 INFO L432 AbstractCegarLoop]: Abstraction has 308 states and 311 transitions. [2018-01-29 23:35:59,908 INFO L433 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-01-29 23:35:59,908 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 311 transitions. [2018-01-29 23:35:59,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-01-29 23:35:59,908 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:35:59,909 INFO L350 BasicCegarLoop]: trace histogram [46, 45, 45, 45, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:35:59,909 INFO L371 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:35:59,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1851152496, now seen corresponding path program 45 times [2018-01-29 23:35:59,909 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:35:59,909 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:35:59,909 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:59,909 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:35:59,909 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:35:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:35:59,916 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:36:00,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 4050 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2018-01-29 23:36:00,597 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:36:00,597 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:36:00,603 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-29 23:36:00,610 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:00,611 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:00,612 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:00,613 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:00,615 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:00,616 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:00,618 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:00,620 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:00,623 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:00,625 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:00,628 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:00,631 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:00,634 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:00,638 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:00,643 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:00,649 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:00,655 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:00,662 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:00,662 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:36:00,664 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:36:00,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 850 refuted. 0 times theorem prover too weak. 4050 trivial. 0 not checked. [2018-01-29 23:36:00,980 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:36:00,981 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 37] total 65 [2018-01-29 23:36:00,981 INFO L409 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-01-29 23:36:00,981 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-01-29 23:36:00,981 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1298, Invalid=2862, Unknown=0, NotChecked=0, Total=4160 [2018-01-29 23:36:00,981 INFO L87 Difference]: Start difference. First operand 308 states and 311 transitions. Second operand 65 states. [2018-01-29 23:36:01,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:36:01,537 INFO L93 Difference]: Finished difference Result 442 states and 449 transitions. [2018-01-29 23:36:01,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-01-29 23:36:01,537 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 302 [2018-01-29 23:36:01,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:36:01,538 INFO L225 Difference]: With dead ends: 442 [2018-01-29 23:36:01,538 INFO L226 Difference]: Without dead ends: 323 [2018-01-29 23:36:01,539 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=3508, Invalid=6194, Unknown=0, NotChecked=0, Total=9702 [2018-01-29 23:36:01,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-01-29 23:36:01,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 318. [2018-01-29 23:36:01,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2018-01-29 23:36:01,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 321 transitions. [2018-01-29 23:36:01,541 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 321 transitions. Word has length 302 [2018-01-29 23:36:01,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:36:01,541 INFO L432 AbstractCegarLoop]: Abstraction has 318 states and 321 transitions. [2018-01-29 23:36:01,542 INFO L433 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-01-29 23:36:01,542 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 321 transitions. [2018-01-29 23:36:01,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-01-29 23:36:01,542 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:36:01,543 INFO L350 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:36:01,543 INFO L371 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:36:01,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1177755409, now seen corresponding path program 46 times [2018-01-29 23:36:01,543 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:36:01,543 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:36:01,543 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:36:01,543 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:36:01,543 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:36:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:36:01,551 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:36:02,335 INFO L134 CoverageAnalysis]: Checked inductivity of 5186 backedges. 0 proven. 4232 refuted. 0 times theorem prover too weak. 954 trivial. 0 not checked. [2018-01-29 23:36:02,335 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:36:02,335 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:36:02,340 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-29 23:36:02,370 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:36:02,372 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:36:02,410 INFO L134 CoverageAnalysis]: Checked inductivity of 5186 backedges. 0 proven. 4232 refuted. 0 times theorem prover too weak. 954 trivial. 0 not checked. [2018-01-29 23:36:02,427 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:36:02,427 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-01-29 23:36:02,427 INFO L409 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-01-29 23:36:02,427 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-01-29 23:36:02,427 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-01-29 23:36:02,427 INFO L87 Difference]: Start difference. First operand 318 states and 321 transitions. Second operand 49 states. [2018-01-29 23:36:02,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:36:02,552 INFO L93 Difference]: Finished difference Result 449 states and 455 transitions. [2018-01-29 23:36:02,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-01-29 23:36:02,552 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 312 [2018-01-29 23:36:02,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:36:02,553 INFO L225 Difference]: With dead ends: 449 [2018-01-29 23:36:02,553 INFO L226 Difference]: Without dead ends: 324 [2018-01-29 23:36:02,553 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-01-29 23:36:02,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-01-29 23:36:02,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 322. [2018-01-29 23:36:02,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-01-29 23:36:02,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 325 transitions. [2018-01-29 23:36:02,556 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 325 transitions. Word has length 312 [2018-01-29 23:36:02,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:36:02,556 INFO L432 AbstractCegarLoop]: Abstraction has 322 states and 325 transitions. [2018-01-29 23:36:02,556 INFO L433 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-01-29 23:36:02,556 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 325 transitions. [2018-01-29 23:36:02,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-01-29 23:36:02,557 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:36:02,557 INFO L350 BasicCegarLoop]: trace histogram [48, 47, 47, 47, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:36:02,557 INFO L371 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:36:02,557 INFO L82 PathProgramCache]: Analyzing trace with hash 331647370, now seen corresponding path program 47 times [2018-01-29 23:36:02,557 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:36:02,557 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:36:02,558 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:36:02,558 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:36:02,558 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:36:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:36:02,565 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:36:03,320 INFO L134 CoverageAnalysis]: Checked inductivity of 5372 backedges. 0 proven. 4418 refuted. 0 times theorem prover too weak. 954 trivial. 0 not checked. [2018-01-29 23:36:03,320 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:36:03,320 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:36:03,325 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-29 23:36:03,330 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,331 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,332 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,332 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,333 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,334 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,335 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,336 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,337 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,338 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,340 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,341 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,343 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,345 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,347 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,350 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,352 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,355 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,359 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,363 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,367 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,371 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,376 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,382 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,388 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,396 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,404 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,412 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,422 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,433 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,444 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,457 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,472 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,488 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,506 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,525 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,546 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,570 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,596 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,622 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,651 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,683 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,717 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,755 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,795 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,838 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,885 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,948 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:03,949 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:36:03,952 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:36:04,540 INFO L134 CoverageAnalysis]: Checked inductivity of 5372 backedges. 0 proven. 954 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2018-01-29 23:36:04,559 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:36:04,559 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 39] total 68 [2018-01-29 23:36:04,559 INFO L409 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-01-29 23:36:04,559 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-01-29 23:36:04,560 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1414, Invalid=3142, Unknown=0, NotChecked=0, Total=4556 [2018-01-29 23:36:04,560 INFO L87 Difference]: Start difference. First operand 322 states and 325 transitions. Second operand 68 states. [2018-01-29 23:36:05,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:36:05,120 INFO L93 Difference]: Finished difference Result 462 states and 469 transitions. [2018-01-29 23:36:05,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-01-29 23:36:05,120 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 316 [2018-01-29 23:36:05,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:36:05,121 INFO L225 Difference]: With dead ends: 462 [2018-01-29 23:36:05,121 INFO L226 Difference]: Without dead ends: 337 [2018-01-29 23:36:05,122 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1476 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3862, Invalid=6850, Unknown=0, NotChecked=0, Total=10712 [2018-01-29 23:36:05,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2018-01-29 23:36:05,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 332. [2018-01-29 23:36:05,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2018-01-29 23:36:05,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 335 transitions. [2018-01-29 23:36:05,125 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 335 transitions. Word has length 316 [2018-01-29 23:36:05,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:36:05,125 INFO L432 AbstractCegarLoop]: Abstraction has 332 states and 335 transitions. [2018-01-29 23:36:05,125 INFO L433 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-01-29 23:36:05,125 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 335 transitions. [2018-01-29 23:36:05,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-01-29 23:36:05,126 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:36:05,126 INFO L350 BasicCegarLoop]: trace histogram [49, 48, 48, 48, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:36:05,126 INFO L371 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:36:05,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1611371285, now seen corresponding path program 48 times [2018-01-29 23:36:05,126 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:36:05,126 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:36:05,127 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:36:05,127 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:36:05,127 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:36:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:36:05,134 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:36:05,936 INFO L134 CoverageAnalysis]: Checked inductivity of 5672 backedges. 0 proven. 4608 refuted. 0 times theorem prover too weak. 1064 trivial. 0 not checked. [2018-01-29 23:36:05,936 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:36:05,936 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:36:05,941 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-29 23:36:05,947 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:05,948 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:05,949 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:05,950 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:05,951 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:05,952 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:05,953 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:05,954 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:05,955 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:05,957 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:05,958 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:05,960 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:05,961 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:05,963 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:05,966 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:05,968 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:05,970 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:05,973 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:05,976 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:05,979 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:05,982 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:05,986 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:05,990 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:05,994 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:05,998 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:06,004 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:06,009 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:06,015 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:06,021 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:06,029 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:06,036 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:06,044 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:06,052 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:06,061 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:06,071 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:06,081 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:06,092 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:06,104 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:06,117 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:06,118 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:36:06,120 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:36:06,459 INFO L134 CoverageAnalysis]: Checked inductivity of 5672 backedges. 0 proven. 1064 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2018-01-29 23:36:06,476 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:36:06,477 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 41] total 70 [2018-01-29 23:36:06,477 INFO L409 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-01-29 23:36:06,477 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-01-29 23:36:06,477 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1484, Invalid=3346, Unknown=0, NotChecked=0, Total=4830 [2018-01-29 23:36:06,477 INFO L87 Difference]: Start difference. First operand 332 states and 335 transitions. Second operand 70 states. [2018-01-29 23:36:07,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:36:07,110 INFO L93 Difference]: Finished difference Result 478 states and 485 transitions. [2018-01-29 23:36:07,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-01-29 23:36:07,111 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 326 [2018-01-29 23:36:07,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:36:07,112 INFO L225 Difference]: With dead ends: 478 [2018-01-29 23:36:07,112 INFO L226 Difference]: Without dead ends: 347 [2018-01-29 23:36:07,112 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1615 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=4144, Invalid=7412, Unknown=0, NotChecked=0, Total=11556 [2018-01-29 23:36:07,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-01-29 23:36:07,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 342. [2018-01-29 23:36:07,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2018-01-29 23:36:07,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 345 transitions. [2018-01-29 23:36:07,115 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 345 transitions. Word has length 326 [2018-01-29 23:36:07,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:36:07,116 INFO L432 AbstractCegarLoop]: Abstraction has 342 states and 345 transitions. [2018-01-29 23:36:07,116 INFO L433 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-01-29 23:36:07,116 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 345 transitions. [2018-01-29 23:36:07,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-01-29 23:36:07,117 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:36:07,117 INFO L350 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:36:07,117 INFO L371 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:36:07,117 INFO L82 PathProgramCache]: Analyzing trace with hash 88182860, now seen corresponding path program 49 times [2018-01-29 23:36:07,117 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:36:07,117 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:36:07,118 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:36:07,118 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:36:07,118 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:36:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:36:07,126 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:36:08,009 INFO L134 CoverageAnalysis]: Checked inductivity of 5982 backedges. 0 proven. 4802 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2018-01-29 23:36:08,009 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:36:08,009 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:36:08,013 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:36:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:36:08,042 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:36:08,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5982 backedges. 0 proven. 4802 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2018-01-29 23:36:08,109 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:36:08,109 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-01-29 23:36:08,110 INFO L409 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-01-29 23:36:08,110 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-01-29 23:36:08,110 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-01-29 23:36:08,110 INFO L87 Difference]: Start difference. First operand 342 states and 345 transitions. Second operand 52 states. [2018-01-29 23:36:08,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:36:08,311 INFO L93 Difference]: Finished difference Result 485 states and 491 transitions. [2018-01-29 23:36:08,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-01-29 23:36:08,311 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 336 [2018-01-29 23:36:08,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:36:08,312 INFO L225 Difference]: With dead ends: 485 [2018-01-29 23:36:08,312 INFO L226 Difference]: Without dead ends: 348 [2018-01-29 23:36:08,312 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-01-29 23:36:08,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2018-01-29 23:36:08,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 346. [2018-01-29 23:36:08,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2018-01-29 23:36:08,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 349 transitions. [2018-01-29 23:36:08,315 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 349 transitions. Word has length 336 [2018-01-29 23:36:08,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:36:08,315 INFO L432 AbstractCegarLoop]: Abstraction has 346 states and 349 transitions. [2018-01-29 23:36:08,315 INFO L433 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-01-29 23:36:08,315 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 349 transitions. [2018-01-29 23:36:08,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-01-29 23:36:08,316 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:36:08,316 INFO L350 BasicCegarLoop]: trace histogram [51, 50, 50, 50, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:36:08,316 INFO L371 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:36:08,316 INFO L82 PathProgramCache]: Analyzing trace with hash -360095803, now seen corresponding path program 50 times [2018-01-29 23:36:08,316 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:36:08,316 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:36:08,317 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:36:08,317 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:36:08,317 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:36:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:36:08,324 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:36:09,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6180 backedges. 0 proven. 5000 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2018-01-29 23:36:09,253 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:36:09,253 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:36:09,259 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-29 23:36:09,267 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:09,283 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:09,286 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:36:09,288 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:36:09,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6180 backedges. 0 proven. 5000 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2018-01-29 23:36:09,349 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:36:09,349 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-01-29 23:36:09,349 INFO L409 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-01-29 23:36:09,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-01-29 23:36:09,350 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-01-29 23:36:09,350 INFO L87 Difference]: Start difference. First operand 346 states and 349 transitions. Second operand 53 states. [2018-01-29 23:36:09,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:36:09,500 INFO L93 Difference]: Finished difference Result 489 states and 495 transitions. [2018-01-29 23:36:09,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-01-29 23:36:09,501 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 340 [2018-01-29 23:36:09,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:36:09,502 INFO L225 Difference]: With dead ends: 489 [2018-01-29 23:36:09,502 INFO L226 Difference]: Without dead ends: 352 [2018-01-29 23:36:09,502 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-01-29 23:36:09,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2018-01-29 23:36:09,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 350. [2018-01-29 23:36:09,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2018-01-29 23:36:09,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 353 transitions. [2018-01-29 23:36:09,504 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 353 transitions. Word has length 340 [2018-01-29 23:36:09,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:36:09,505 INFO L432 AbstractCegarLoop]: Abstraction has 350 states and 353 transitions. [2018-01-29 23:36:09,505 INFO L433 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-01-29 23:36:09,505 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 353 transitions. [2018-01-29 23:36:09,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-01-29 23:36:09,506 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:36:09,506 INFO L350 BasicCegarLoop]: trace histogram [52, 51, 51, 51, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:36:09,506 INFO L371 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:36:09,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1073400510, now seen corresponding path program 51 times [2018-01-29 23:36:09,506 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:36:09,506 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:36:09,506 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:36:09,506 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:36:09,506 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:36:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:36:09,519 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:36:10,461 INFO L134 CoverageAnalysis]: Checked inductivity of 6382 backedges. 0 proven. 5202 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2018-01-29 23:36:10,461 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:36:10,461 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:36:10,466 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-29 23:36:10,472 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:10,473 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:10,475 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:10,476 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:10,477 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:10,479 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:10,480 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:10,482 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:10,484 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:10,487 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:10,489 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:10,492 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:10,496 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:10,500 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:10,505 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:10,511 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:10,517 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:10,524 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:10,532 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:10,541 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:10,551 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:10,552 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:36:10,554 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:36:10,932 INFO L134 CoverageAnalysis]: Checked inductivity of 6382 backedges. 0 proven. 1180 refuted. 0 times theorem prover too weak. 5202 trivial. 0 not checked. [2018-01-29 23:36:10,948 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:36:10,949 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 43] total 74 [2018-01-29 23:36:10,949 INFO L409 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-01-29 23:36:10,949 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-01-29 23:36:10,949 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1661, Invalid=3741, Unknown=0, NotChecked=0, Total=5402 [2018-01-29 23:36:10,949 INFO L87 Difference]: Start difference. First operand 350 states and 353 transitions. Second operand 74 states. [2018-01-29 23:36:11,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:36:11,643 INFO L93 Difference]: Finished difference Result 502 states and 509 transitions. [2018-01-29 23:36:11,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-01-29 23:36:11,643 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 344 [2018-01-29 23:36:11,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:36:11,644 INFO L225 Difference]: With dead ends: 502 [2018-01-29 23:36:11,644 INFO L226 Difference]: Without dead ends: 365 [2018-01-29 23:36:11,645 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1800 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=4621, Invalid=8261, Unknown=0, NotChecked=0, Total=12882 [2018-01-29 23:36:11,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-01-29 23:36:11,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 360. [2018-01-29 23:36:11,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2018-01-29 23:36:11,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 363 transitions. [2018-01-29 23:36:11,647 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 363 transitions. Word has length 344 [2018-01-29 23:36:11,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:36:11,648 INFO L432 AbstractCegarLoop]: Abstraction has 360 states and 363 transitions. [2018-01-29 23:36:11,648 INFO L433 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-01-29 23:36:11,648 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 363 transitions. [2018-01-29 23:36:11,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-01-29 23:36:11,649 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:36:11,649 INFO L350 BasicCegarLoop]: trace histogram [53, 52, 52, 52, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:36:11,649 INFO L371 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:36:11,649 INFO L82 PathProgramCache]: Analyzing trace with hash 565401503, now seen corresponding path program 52 times [2018-01-29 23:36:11,649 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:36:11,649 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:36:11,649 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:36:11,650 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:36:11,650 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:36:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:36:11,657 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:36:12,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6710 backedges. 0 proven. 5408 refuted. 0 times theorem prover too weak. 1302 trivial. 0 not checked. [2018-01-29 23:36:12,611 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:36:12,611 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:36:12,616 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-29 23:36:12,651 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:36:12,654 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:36:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 6710 backedges. 0 proven. 5408 refuted. 0 times theorem prover too weak. 1302 trivial. 0 not checked. [2018-01-29 23:36:12,717 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:36:12,718 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-01-29 23:36:12,718 INFO L409 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-01-29 23:36:12,718 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-01-29 23:36:12,718 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-01-29 23:36:12,718 INFO L87 Difference]: Start difference. First operand 360 states and 363 transitions. Second operand 55 states. [2018-01-29 23:36:12,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:36:12,898 INFO L93 Difference]: Finished difference Result 509 states and 515 transitions. [2018-01-29 23:36:12,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-01-29 23:36:12,898 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 354 [2018-01-29 23:36:12,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:36:12,899 INFO L225 Difference]: With dead ends: 509 [2018-01-29 23:36:12,899 INFO L226 Difference]: Without dead ends: 366 [2018-01-29 23:36:12,900 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-01-29 23:36:12,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2018-01-29 23:36:12,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 364. [2018-01-29 23:36:12,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-01-29 23:36:12,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 367 transitions. [2018-01-29 23:36:12,902 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 367 transitions. Word has length 354 [2018-01-29 23:36:12,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:36:12,902 INFO L432 AbstractCegarLoop]: Abstraction has 364 states and 367 transitions. [2018-01-29 23:36:12,902 INFO L433 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-01-29 23:36:12,902 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 367 transitions. [2018-01-29 23:36:12,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-01-29 23:36:12,903 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:36:12,904 INFO L350 BasicCegarLoop]: trace histogram [54, 53, 53, 53, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:36:12,904 INFO L371 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:36:12,904 INFO L82 PathProgramCache]: Analyzing trace with hash -573728040, now seen corresponding path program 53 times [2018-01-29 23:36:12,904 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:36:12,904 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:36:12,904 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:36:12,904 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:36:12,904 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:36:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:36:12,912 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:36:13,996 INFO L134 CoverageAnalysis]: Checked inductivity of 6920 backedges. 0 proven. 5618 refuted. 0 times theorem prover too weak. 1302 trivial. 0 not checked. [2018-01-29 23:36:13,996 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:36:13,996 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:36:14,000 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-29 23:36:14,006 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,007 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,008 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,008 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,009 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,010 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,011 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,012 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,013 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,015 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,016 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,018 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,020 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,022 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,024 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,027 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,030 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,033 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,037 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,040 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,044 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,049 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,054 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,060 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,066 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,073 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,081 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,090 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,100 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,111 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,122 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,135 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,149 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,165 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,182 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,201 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,222 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,245 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,269 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,296 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,324 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,355 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,388 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,424 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,463 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,505 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,551 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,599 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,653 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,712 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,775 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,842 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:14,914 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:15,142 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:15,145 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:36:15,149 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:36:15,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6920 backedges. 0 proven. 5618 refuted. 0 times theorem prover too weak. 1302 trivial. 0 not checked. [2018-01-29 23:36:15,219 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:36:15,220 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-01-29 23:36:15,220 INFO L409 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-01-29 23:36:15,220 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-01-29 23:36:15,220 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-01-29 23:36:15,220 INFO L87 Difference]: Start difference. First operand 364 states and 367 transitions. Second operand 56 states. [2018-01-29 23:36:15,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:36:15,405 INFO L93 Difference]: Finished difference Result 513 states and 519 transitions. [2018-01-29 23:36:15,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-01-29 23:36:15,405 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 358 [2018-01-29 23:36:15,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:36:15,406 INFO L225 Difference]: With dead ends: 513 [2018-01-29 23:36:15,406 INFO L226 Difference]: Without dead ends: 370 [2018-01-29 23:36:15,407 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-01-29 23:36:15,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2018-01-29 23:36:15,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 368. [2018-01-29 23:36:15,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2018-01-29 23:36:15,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 371 transitions. [2018-01-29 23:36:15,409 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 371 transitions. Word has length 358 [2018-01-29 23:36:15,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:36:15,409 INFO L432 AbstractCegarLoop]: Abstraction has 368 states and 371 transitions. [2018-01-29 23:36:15,409 INFO L433 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-01-29 23:36:15,409 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 371 transitions. [2018-01-29 23:36:15,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-01-29 23:36:15,410 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:36:15,410 INFO L350 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:36:15,410 INFO L371 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:36:15,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1338926703, now seen corresponding path program 54 times [2018-01-29 23:36:15,410 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:36:15,410 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:36:15,411 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:36:15,411 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:36:15,411 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:36:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:36:15,419 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:36:16,420 INFO L134 CoverageAnalysis]: Checked inductivity of 7134 backedges. 0 proven. 5832 refuted. 0 times theorem prover too weak. 1302 trivial. 0 not checked. [2018-01-29 23:36:16,420 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:36:16,420 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:36:16,432 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-29 23:36:16,438 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,439 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,440 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,441 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,442 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,443 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,444 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,445 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,446 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,448 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,449 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,451 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,453 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,455 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,457 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,459 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,461 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,464 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,467 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,470 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,474 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,477 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,481 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,485 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,490 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,495 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,501 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,507 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,513 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,520 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,528 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,536 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,544 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,553 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,562 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,573 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,584 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,596 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,609 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,623 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,638 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,655 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,673 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:36:16,674 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:36:16,677 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:36:17,161 INFO L134 CoverageAnalysis]: Checked inductivity of 7134 backedges. 0 proven. 1302 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2018-01-29 23:36:17,179 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:36:17,179 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 45] total 78 [2018-01-29 23:36:17,179 INFO L409 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-01-29 23:36:17,180 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-01-29 23:36:17,180 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1848, Invalid=4158, Unknown=0, NotChecked=0, Total=6006 [2018-01-29 23:36:17,180 INFO L87 Difference]: Start difference. First operand 368 states and 371 transitions. Second operand 78 states. [2018-01-29 23:36:17,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:36:17,899 INFO L93 Difference]: Finished difference Result 526 states and 533 transitions. [2018-01-29 23:36:17,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-01-29 23:36:17,899 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 362 [2018-01-29 23:36:17,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:36:17,900 INFO L225 Difference]: With dead ends: 526 [2018-01-29 23:36:17,900 INFO L226 Difference]: Without dead ends: 383 [2018-01-29 23:36:17,901 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1995 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=5124, Invalid=9156, Unknown=0, NotChecked=0, Total=14280 [2018-01-29 23:36:17,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-01-29 23:36:17,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 378. [2018-01-29 23:36:17,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2018-01-29 23:36:17,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 381 transitions. [2018-01-29 23:36:17,904 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 381 transitions. Word has length 362 [2018-01-29 23:36:17,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:36:17,904 INFO L432 AbstractCegarLoop]: Abstraction has 378 states and 381 transitions. [2018-01-29 23:36:17,904 INFO L433 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-01-29 23:36:17,904 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 381 transitions. [2018-01-29 23:36:17,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-01-29 23:36:17,905 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:36:17,905 INFO L350 BasicCegarLoop]: trace histogram [56, 55, 55, 55, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:36:17,905 INFO L371 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:36:17,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1668767730, now seen corresponding path program 55 times [2018-01-29 23:36:17,905 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:36:17,905 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:36:17,906 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:36:17,906 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:36:17,906 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:36:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:36:17,914 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:36:18,944 INFO L134 CoverageAnalysis]: Checked inductivity of 7480 backedges. 0 proven. 6050 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2018-01-29 23:36:18,945 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:36:18,945 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:36:18,950 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:36:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:36:18,980 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:36:19,031 INFO L134 CoverageAnalysis]: Checked inductivity of 7480 backedges. 0 proven. 6050 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2018-01-29 23:36:19,048 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:36:19,048 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-01-29 23:36:19,049 INFO L409 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-01-29 23:36:19,049 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-01-29 23:36:19,049 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-01-29 23:36:19,049 INFO L87 Difference]: Start difference. First operand 378 states and 381 transitions. Second operand 58 states. [2018-01-29 23:36:19,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:36:19,269 INFO L93 Difference]: Finished difference Result 533 states and 539 transitions. [2018-01-29 23:36:19,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-01-29 23:36:19,269 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 372 [2018-01-29 23:36:19,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:36:19,270 INFO L225 Difference]: With dead ends: 533 [2018-01-29 23:36:19,270 INFO L226 Difference]: Without dead ends: 384 [2018-01-29 23:36:19,271 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-01-29 23:36:19,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2018-01-29 23:36:19,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 382. [2018-01-29 23:36:19,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-01-29 23:36:19,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 385 transitions. [2018-01-29 23:36:19,273 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 385 transitions. Word has length 372 [2018-01-29 23:36:19,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:36:19,274 INFO L432 AbstractCegarLoop]: Abstraction has 382 states and 385 transitions. [2018-01-29 23:36:19,274 INFO L433 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-01-29 23:36:19,274 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 385 transitions. [2018-01-29 23:36:19,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-01-29 23:36:19,275 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:36:19,275 INFO L350 BasicCegarLoop]: trace histogram [57, 56, 56, 56, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:36:19,275 INFO L371 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:36:19,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1872144107, now seen corresponding path program 56 times [2018-01-29 23:36:19,275 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:36:19,275 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:36:19,276 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:36:19,276 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:36:19,276 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:36:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:36:19,285 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:36:20,389 INFO L134 CoverageAnalysis]: Checked inductivity of 7702 backedges. 0 proven. 6272 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2018-01-29 23:36:20,389 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:36:20,389 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:36:20,396 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-29 23:36:20,403 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:20,418 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:20,422 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:36:20,425 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:36:20,479 INFO L134 CoverageAnalysis]: Checked inductivity of 7702 backedges. 0 proven. 6272 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2018-01-29 23:36:20,498 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:36:20,498 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-01-29 23:36:20,499 INFO L409 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-01-29 23:36:20,499 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-01-29 23:36:20,499 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-01-29 23:36:20,499 INFO L87 Difference]: Start difference. First operand 382 states and 385 transitions. Second operand 59 states. [2018-01-29 23:36:20,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:36:20,661 INFO L93 Difference]: Finished difference Result 537 states and 543 transitions. [2018-01-29 23:36:20,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-01-29 23:36:20,661 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 376 [2018-01-29 23:36:20,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:36:20,662 INFO L225 Difference]: With dead ends: 537 [2018-01-29 23:36:20,662 INFO L226 Difference]: Without dead ends: 388 [2018-01-29 23:36:20,662 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-01-29 23:36:20,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-01-29 23:36:20,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 386. [2018-01-29 23:36:20,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2018-01-29 23:36:20,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 389 transitions. [2018-01-29 23:36:20,665 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 389 transitions. Word has length 376 [2018-01-29 23:36:20,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:36:20,665 INFO L432 AbstractCegarLoop]: Abstraction has 386 states and 389 transitions. [2018-01-29 23:36:20,665 INFO L433 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-01-29 23:36:20,665 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 389 transitions. [2018-01-29 23:36:20,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-01-29 23:36:20,666 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:36:20,666 INFO L350 BasicCegarLoop]: trace histogram [58, 57, 57, 57, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:36:20,666 INFO L371 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:36:20,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1012386148, now seen corresponding path program 57 times [2018-01-29 23:36:20,666 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:36:20,666 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:36:20,667 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:36:20,667 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:36:20,667 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:36:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:36:20,675 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:36:21,812 INFO L134 CoverageAnalysis]: Checked inductivity of 7928 backedges. 0 proven. 6498 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2018-01-29 23:36:21,812 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:36:21,812 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:36:21,817 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-29 23:36:21,824 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:21,826 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:21,827 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:21,828 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:21,829 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:21,831 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:21,833 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:21,835 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:21,838 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:21,841 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:21,843 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:21,846 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:21,850 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:21,854 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:21,859 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:21,865 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:21,870 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:21,877 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:21,886 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:21,895 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:21,906 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:21,918 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:21,931 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:36:21,932 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:36:21,934 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:36:22,404 INFO L134 CoverageAnalysis]: Checked inductivity of 7928 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 6498 trivial. 0 not checked. [2018-01-29 23:36:22,422 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:36:22,422 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 47] total 82 [2018-01-29 23:36:22,422 INFO L409 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-01-29 23:36:22,422 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-01-29 23:36:22,423 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2045, Invalid=4597, Unknown=0, NotChecked=0, Total=6642 [2018-01-29 23:36:22,423 INFO L87 Difference]: Start difference. First operand 386 states and 389 transitions. Second operand 82 states. [2018-01-29 23:36:23,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:36:23,248 INFO L93 Difference]: Finished difference Result 550 states and 557 transitions. [2018-01-29 23:36:23,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-01-29 23:36:23,248 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 380 [2018-01-29 23:36:23,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:36:23,249 INFO L225 Difference]: With dead ends: 550 [2018-01-29 23:36:23,249 INFO L226 Difference]: Without dead ends: 401 [2018-01-29 23:36:23,250 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2200 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=5653, Invalid=10097, Unknown=0, NotChecked=0, Total=15750 [2018-01-29 23:36:23,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2018-01-29 23:36:23,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 396. [2018-01-29 23:36:23,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2018-01-29 23:36:23,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 399 transitions. [2018-01-29 23:36:23,252 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 399 transitions. Word has length 380 [2018-01-29 23:36:23,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:36:23,252 INFO L432 AbstractCegarLoop]: Abstraction has 396 states and 399 transitions. [2018-01-29 23:36:23,252 INFO L433 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-01-29 23:36:23,252 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 399 transitions. [2018-01-29 23:36:23,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-01-29 23:36:23,253 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:36:23,253 INFO L350 BasicCegarLoop]: trace histogram [59, 58, 58, 58, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:36:23,254 INFO L371 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:36:23,254 INFO L82 PathProgramCache]: Analyzing trace with hash -204170939, now seen corresponding path program 58 times [2018-01-29 23:36:23,254 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:36:23,254 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:36:23,254 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:36:23,254 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:36:23,254 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:36:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:36:23,263 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:36:24,441 INFO L134 CoverageAnalysis]: Checked inductivity of 8292 backedges. 0 proven. 6728 refuted. 0 times theorem prover too weak. 1564 trivial. 0 not checked. [2018-01-29 23:36:24,441 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:36:24,441 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:36:24,447 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-29 23:36:24,490 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:36:24,493 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:36:24,549 INFO L134 CoverageAnalysis]: Checked inductivity of 8292 backedges. 0 proven. 6728 refuted. 0 times theorem prover too weak. 1564 trivial. 0 not checked. [2018-01-29 23:36:24,573 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:36:24,573 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-01-29 23:36:24,574 INFO L409 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-01-29 23:36:24,574 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-01-29 23:36:24,574 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-01-29 23:36:24,574 INFO L87 Difference]: Start difference. First operand 396 states and 399 transitions. Second operand 61 states. [2018-01-29 23:36:24,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:36:24,742 INFO L93 Difference]: Finished difference Result 557 states and 563 transitions. [2018-01-29 23:36:24,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-01-29 23:36:24,742 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 390 [2018-01-29 23:36:24,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:36:24,743 INFO L225 Difference]: With dead ends: 557 [2018-01-29 23:36:24,743 INFO L226 Difference]: Without dead ends: 402 [2018-01-29 23:36:24,744 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-01-29 23:36:24,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2018-01-29 23:36:24,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 400. [2018-01-29 23:36:24,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2018-01-29 23:36:24,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 403 transitions. [2018-01-29 23:36:24,746 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 403 transitions. Word has length 390 [2018-01-29 23:36:24,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:36:24,746 INFO L432 AbstractCegarLoop]: Abstraction has 400 states and 403 transitions. [2018-01-29 23:36:24,746 INFO L433 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-01-29 23:36:24,746 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 403 transitions. [2018-01-29 23:36:24,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-01-29 23:36:24,747 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:36:24,747 INFO L350 BasicCegarLoop]: trace histogram [60, 59, 59, 59, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:36:24,747 INFO L371 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:36:24,748 INFO L82 PathProgramCache]: Analyzing trace with hash 2007462910, now seen corresponding path program 59 times [2018-01-29 23:36:24,748 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:36:24,748 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:36:24,748 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:36:24,748 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:36:24,748 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:36:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:36:24,757 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:36:25,924 INFO L134 CoverageAnalysis]: Checked inductivity of 8526 backedges. 0 proven. 6962 refuted. 0 times theorem prover too weak. 1564 trivial. 0 not checked. [2018-01-29 23:36:25,925 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:36:25,925 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:36:25,929 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-29 23:36:25,936 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:25,936 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:25,937 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:25,938 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:25,938 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:25,939 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:25,940 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:25,941 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:25,942 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:25,944 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:25,945 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:25,947 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:25,948 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:25,950 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:25,953 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:25,955 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:25,958 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:25,961 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:25,964 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:25,968 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:25,972 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:25,976 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:25,982 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:25,987 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:25,993 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,000 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,008 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,017 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,027 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,037 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,049 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,061 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,075 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,090 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,107 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,124 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,145 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,166 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,190 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,216 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,244 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,273 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command Received shutdown request... [2018-01-29 23:36:26,305 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,339 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,376 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,416 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,459 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,506 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,556 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,610 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,669 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,731 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,798 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,869 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:26,944 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:27,022 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:27,104 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:27,190 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:27,283 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:27,444 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:36:27,446 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:36:27,450 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:36:27,451 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-29 23:36:27,451 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-29 23:36:27,454 WARN L185 ceAbstractionStarter]: Timeout [2018-01-29 23:36:27,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.01 11:36:27 BoogieIcfgContainer [2018-01-29 23:36:27,454 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-29 23:36:27,455 INFO L168 Benchmark]: Toolchain (without parser) took 66555.67 ms. Allocated memory was 149.9 MB in the beginning and 1.1 GB in the end (delta: 974.7 MB). Free memory was 114.8 MB in the beginning and 291.2 MB in the end (delta: -176.4 MB). Peak memory consumption was 798.3 MB. Max. memory is 5.3 GB. [2018-01-29 23:36:27,455 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 149.9 MB. Free memory is still 119.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-29 23:36:27,456 INFO L168 Benchmark]: CACSL2BoogieTranslator took 107.49 ms. Allocated memory is still 149.9 MB. Free memory was 114.8 MB in the beginning and 106.8 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. [2018-01-29 23:36:27,456 INFO L168 Benchmark]: Boogie Preprocessor took 17.68 ms. Allocated memory is still 149.9 MB. Free memory was 106.8 MB in the beginning and 105.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 5.3 GB. [2018-01-29 23:36:27,456 INFO L168 Benchmark]: RCFGBuilder took 260.11 ms. Allocated memory is still 149.9 MB. Free memory was 105.1 MB in the beginning and 93.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 5.3 GB. [2018-01-29 23:36:27,456 INFO L168 Benchmark]: TraceAbstraction took 66167.97 ms. Allocated memory was 149.9 MB in the beginning and 1.1 GB in the end (delta: 974.7 MB). Free memory was 92.8 MB in the beginning and 291.2 MB in the end (delta: -198.4 MB). Peak memory consumption was 776.3 MB. Max. memory is 5.3 GB. [2018-01-29 23:36:27,459 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 149.9 MB. Free memory is still 119.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 107.49 ms. Allocated memory is still 149.9 MB. Free memory was 114.8 MB in the beginning and 106.8 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 17.68 ms. Allocated memory is still 149.9 MB. Free memory was 106.8 MB in the beginning and 105.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 5.3 GB. * RCFGBuilder took 260.11 ms. Allocated memory is still 149.9 MB. Free memory was 105.1 MB in the beginning and 93.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 5.3 GB. * TraceAbstraction took 66167.97 ms. Allocated memory was 149.9 MB in the beginning and 1.1 GB in the end (delta: 974.7 MB). Free memory was 92.8 MB in the beginning and 291.2 MB in the end (delta: -198.4 MB). Peak memory consumption was 776.3 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 2]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 2). Cancelled while BasicCegarLoop was analyzing trace of length 395 with TraceHistMax 60, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 37 locations, 1 error locations. TIMEOUT Result, 66.1s OverallTime, 61 OverallIterations, 60 TraceHistogramMax, 16.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1729 SDtfs, 5506 SDslu, 33560 SDs, 0 SdLazy, 14756 SolverSat, 941 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14308 GetRequests, 11779 SyntacticMatches, 0 SemanticMatches, 2529 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17325 ImplicationChecksByTransitivity, 36.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=400occurred in iteration=60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 60 MinimizatonAttempts, 193 StatesRemovedByMinimization, 59 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 4.9s SatisfiabilityAnalysisTime, 38.5s InterpolantComputationTime, 23978 NumberOfCodeBlocks, 22970 NumberOfCodeBlocksAsserted, 717 NumberOfCheckSat, 23860 ConstructedInterpolants, 0 QuantifiedInterpolants, 12959182 SizeOfPredicates, 564 NumberOfNonLiveVariables, 14555 ConjunctsInSsa, 1660 ConjunctsInUnsatCore, 118 InterpolantComputations, 2 PerfectInterpolantSequences, 100378/325792 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/standard_copyInit_true-unreach-call_ground.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-29_23-36-27-462.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/standard_copyInit_true-unreach-call_ground.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-29_23-36-27-462.csv Completed graceful shutdown