java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/reducercommutativity/rangesum40_false-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-5f7ec6e-m [2018-01-31 09:02:05,449 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 09:02:05,450 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 09:02:05,460 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 09:02:05,460 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 09:02:05,461 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 09:02:05,462 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 09:02:05,463 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 09:02:05,464 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 09:02:05,464 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 09:02:05,465 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 09:02:05,465 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 09:02:05,465 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 09:02:05,466 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 09:02:05,466 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 09:02:05,468 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 09:02:05,469 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 09:02:05,470 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 09:02:05,470 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 09:02:05,471 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 09:02:05,472 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-31 09:02:05,474 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 09:02:05,475 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 09:02:05,475 INFO L98 SettingsManager]: Beginning loading settings from /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-31 09:02:05,480 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 09:02:05,480 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 09:02:05,481 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 09:02:05,481 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 09:02:05,481 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 09:02:05,481 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 09:02:05,481 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 09:02:05,481 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 09:02:05,482 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 09:02:05,482 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 09:02:05,482 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 09:02:05,482 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 09:02:05,482 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-31 09:02:05,482 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 09:02:05,482 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-31 09:02:05,482 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 09:02:05,482 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-31 09:02:05,483 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-31 09:02:05,483 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 09:02:05,483 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 09:02:05,483 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 09:02:05,483 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 09:02:05,483 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 09:02:05,483 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 09:02:05,483 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 09:02:05,483 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 09:02:05,483 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 09:02:05,483 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 09:02:05,484 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 09:02:05,484 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 09:02:05,484 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 09:02:05,484 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 09:02:05,484 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 09:02:05,484 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 09:02:05,503 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 09:02:05,509 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 09:02:05,511 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 09:02:05,512 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 09:02:05,512 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 09:02:05,512 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum40_false-unreach-call.i [2018-01-31 09:02:05,581 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 09:02:05,582 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-31 09:02:05,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 09:02:05,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 09:02:05,586 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 09:02:05,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:02:05" (1/1) ... [2018-01-31 09:02:05,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@116486b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:02:05, skipping insertion in model container [2018-01-31 09:02:05,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:02:05" (1/1) ... [2018-01-31 09:02:05,597 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:02:05,607 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:02:05,678 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:02:05,691 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:02:05,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:02:05 WrapperNode [2018-01-31 09:02:05,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 09:02:05,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 09:02:05,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 09:02:05,696 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 09:02:05,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:02:05" (1/1) ... [2018-01-31 09:02:05,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:02:05" (1/1) ... [2018-01-31 09:02:05,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:02:05" (1/1) ... [2018-01-31 09:02:05,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:02:05" (1/1) ... [2018-01-31 09:02:05,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:02:05" (1/1) ... [2018-01-31 09:02:05,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:02:05" (1/1) ... [2018-01-31 09:02:05,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:02:05" (1/1) ... [2018-01-31 09:02:05,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 09:02:05,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 09:02:05,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 09:02:05,716 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 09:02:05,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:02:05" (1/1) ... No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 09:02:05,766 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 09:02:05,767 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 09:02:05,767 INFO L136 BoogieDeclarations]: Found implementation of procedure init_nondet [2018-01-31 09:02:05,767 INFO L136 BoogieDeclarations]: Found implementation of procedure rangesum [2018-01-31 09:02:05,767 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 09:02:05,767 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 09:02:05,767 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 09:02:05,767 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 09:02:05,767 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 09:02:05,769 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 09:02:05,769 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-31 09:02:05,769 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 09:02:05,769 INFO L128 BoogieDeclarations]: Found specification of procedure init_nondet [2018-01-31 09:02:05,769 INFO L128 BoogieDeclarations]: Found specification of procedure rangesum [2018-01-31 09:02:05,769 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 09:02:05,769 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 09:02:05,769 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 09:02:06,135 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 09:02:06,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:02:06 BoogieIcfgContainer [2018-01-31 09:02:06,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 09:02:06,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 09:02:06,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 09:02:06,138 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 09:02:06,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 09:02:05" (1/3) ... [2018-01-31 09:02:06,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d1fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:02:06, skipping insertion in model container [2018-01-31 09:02:06,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:02:05" (2/3) ... [2018-01-31 09:02:06,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d1fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:02:06, skipping insertion in model container [2018-01-31 09:02:06,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:02:06" (3/3) ... [2018-01-31 09:02:06,142 INFO L107 eAbstractionObserver]: Analyzing ICFG rangesum40_false-unreach-call.i [2018-01-31 09:02:06,147 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 09:02:06,151 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-31 09:02:06,175 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 09:02:06,175 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 09:02:06,175 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 09:02:06,175 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 09:02:06,175 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 09:02:06,175 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 09:02:06,176 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 09:02:06,176 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 09:02:06,176 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 09:02:06,186 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2018-01-31 09:02:06,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-01-31 09:02:06,191 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:06,191 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:06,192 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolation]=== [2018-01-31 09:02:06,194 INFO L82 PathProgramCache]: Analyzing trace with hash 540696337, now seen corresponding path program 1 times [2018-01-31 09:02:06,195 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:06,195 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:06,223 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:06,223 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:02:06,223 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:02:06,254 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:02:06,271 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-31 09:02:06,271 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:02:06,271 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) [2018-01-31 09:02:06,299 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:02:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:02:06,366 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:06,391 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-01-31 09:02:06,409 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:02:06,409 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 09:02:06,411 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-31 09:02:06,419 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-31 09:02:06,419 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 09:02:06,420 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 2 states. [2018-01-31 09:02:06,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:06,437 INFO L93 Difference]: Finished difference Result 157 states and 178 transitions. [2018-01-31 09:02:06,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-31 09:02:06,438 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 78 [2018-01-31 09:02:06,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:06,443 INFO L225 Difference]: With dead ends: 157 [2018-01-31 09:02:06,443 INFO L226 Difference]: Without dead ends: 81 [2018-01-31 09:02:06,445 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 09:02:06,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-01-31 09:02:06,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-01-31 09:02:06,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-01-31 09:02:06,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2018-01-31 09:02:06,525 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 78 [2018-01-31 09:02:06,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:06,526 INFO L432 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2018-01-31 09:02:06,526 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-31 09:02:06,526 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2018-01-31 09:02:06,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-01-31 09:02:06,530 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:06,530 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:06,530 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolation]=== [2018-01-31 09:02:06,530 INFO L82 PathProgramCache]: Analyzing trace with hash -199678615, now seen corresponding path program 1 times [2018-01-31 09:02:06,530 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:06,530 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:06,531 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:06,531 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:02:06,531 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:02:06,544 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:02:06,585 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-31 09:02:06,586 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:02:06,586 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-01-31 09:02:06,597 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:02:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:02:06,633 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:06,666 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-01-31 09:02:06,683 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:02:06,683 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 09:02:06,684 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 09:02:06,684 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 09:02:06,684 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 09:02:06,684 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 3 states. [2018-01-31 09:02:06,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:06,755 INFO L93 Difference]: Finished difference Result 150 states and 162 transitions. [2018-01-31 09:02:06,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 09:02:06,756 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2018-01-31 09:02:06,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:06,757 INFO L225 Difference]: With dead ends: 150 [2018-01-31 09:02:06,757 INFO L226 Difference]: Without dead ends: 88 [2018-01-31 09:02:06,757 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 09:02:06,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-01-31 09:02:06,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2018-01-31 09:02:06,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-01-31 09:02:06,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2018-01-31 09:02:06,762 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 83 [2018-01-31 09:02:06,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:06,762 INFO L432 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2018-01-31 09:02:06,762 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 09:02:06,762 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2018-01-31 09:02:06,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-01-31 09:02:06,764 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:06,764 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:06,764 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolation]=== [2018-01-31 09:02:06,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1465441618, now seen corresponding path program 1 times [2018-01-31 09:02:06,764 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:06,764 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:06,765 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:06,765 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:02:06,765 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:02:06,775 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:02:06,799 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-31 09:02:06,800 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:02:06,800 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-01-31 09:02:06,814 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:02:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:02:06,843 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:06,889 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-01-31 09:02:06,905 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:02:06,906 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 09:02:06,906 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 09:02:06,906 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 09:02:06,906 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 09:02:06,906 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand 3 states. [2018-01-31 09:02:07,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:07,392 INFO L93 Difference]: Finished difference Result 151 states and 169 transitions. [2018-01-31 09:02:07,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 09:02:07,393 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2018-01-31 09:02:07,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:07,395 INFO L225 Difference]: With dead ends: 151 [2018-01-31 09:02:07,395 INFO L226 Difference]: Without dead ends: 96 [2018-01-31 09:02:07,396 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 09:02:07,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-01-31 09:02:07,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2018-01-31 09:02:07,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-01-31 09:02:07,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2018-01-31 09:02:07,401 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 91 [2018-01-31 09:02:07,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:07,401 INFO L432 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2018-01-31 09:02:07,401 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 09:02:07,401 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2018-01-31 09:02:07,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-01-31 09:02:07,403 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:07,403 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:07,403 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolation]=== [2018-01-31 09:02:07,403 INFO L82 PathProgramCache]: Analyzing trace with hash 280349970, now seen corresponding path program 1 times [2018-01-31 09:02:07,403 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:07,403 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:07,404 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:07,404 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:02:07,404 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:02:07,411 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:02:07,534 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-01-31 09:02:07,534 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:02:07,534 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:02:07,541 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:02:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:02:07,573 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:07,667 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-01-31 09:02:07,683 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:07,684 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 09:02:07,684 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 09:02:07,684 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 09:02:07,684 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 09:02:07,684 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand 6 states. [2018-01-31 09:02:08,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:08,033 INFO L93 Difference]: Finished difference Result 177 states and 198 transitions. [2018-01-31 09:02:08,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 09:02:08,037 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2018-01-31 09:02:08,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:08,038 INFO L225 Difference]: With dead ends: 177 [2018-01-31 09:02:08,038 INFO L226 Difference]: Without dead ends: 108 [2018-01-31 09:02:08,038 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-31 09:02:08,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-01-31 09:02:08,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 101. [2018-01-31 09:02:08,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-01-31 09:02:08,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2018-01-31 09:02:08,044 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 91 [2018-01-31 09:02:08,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:08,044 INFO L432 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2018-01-31 09:02:08,044 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 09:02:08,045 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2018-01-31 09:02:08,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-01-31 09:02:08,046 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:08,046 INFO L351 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:08,046 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolation]=== [2018-01-31 09:02:08,046 INFO L82 PathProgramCache]: Analyzing trace with hash -253115437, now seen corresponding path program 1 times [2018-01-31 09:02:08,046 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:08,046 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:08,048 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:08,048 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:02:08,048 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:02:08,056 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:02:08,256 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-01-31 09:02:08,256 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:02:08,256 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) [2018-01-31 09:02:08,261 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:02:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:02:08,303 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:08,370 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-01-31 09:02:08,386 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:08,387 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 09:02:08,387 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 09:02:08,387 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 09:02:08,387 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 09:02:08,387 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand 6 states. [2018-01-31 09:02:08,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:08,567 INFO L93 Difference]: Finished difference Result 181 states and 201 transitions. [2018-01-31 09:02:08,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 09:02:08,567 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-01-31 09:02:08,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:08,568 INFO L225 Difference]: With dead ends: 181 [2018-01-31 09:02:08,568 INFO L226 Difference]: Without dead ends: 116 [2018-01-31 09:02:08,568 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-31 09:02:08,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-01-31 09:02:08,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 109. [2018-01-31 09:02:08,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-01-31 09:02:08,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 117 transitions. [2018-01-31 09:02:08,573 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 117 transitions. Word has length 117 [2018-01-31 09:02:08,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:08,573 INFO L432 AbstractCegarLoop]: Abstraction has 109 states and 117 transitions. [2018-01-31 09:02:08,573 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 09:02:08,573 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 117 transitions. [2018-01-31 09:02:08,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-01-31 09:02:08,576 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:08,576 INFO L351 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:08,576 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolation]=== [2018-01-31 09:02:08,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1180114590, now seen corresponding path program 1 times [2018-01-31 09:02:08,576 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:08,576 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:08,577 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:08,577 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:02:08,577 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:02:08,588 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:02:08,671 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2018-01-31 09:02:08,671 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:02:08,671 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:02:08,684 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:02:08,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:02:08,713 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:08,846 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2018-01-31 09:02:08,864 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:02:08,864 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2018-01-31 09:02:08,864 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-31 09:02:08,864 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-31 09:02:08,865 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-31 09:02:08,865 INFO L87 Difference]: Start difference. First operand 109 states and 117 transitions. Second operand 10 states. [2018-01-31 09:02:09,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:09,097 INFO L93 Difference]: Finished difference Result 215 states and 232 transitions. [2018-01-31 09:02:09,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-31 09:02:09,098 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 143 [2018-01-31 09:02:09,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:09,099 INFO L225 Difference]: With dead ends: 215 [2018-01-31 09:02:09,099 INFO L226 Difference]: Without dead ends: 135 [2018-01-31 09:02:09,099 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-01-31 09:02:09,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-01-31 09:02:09,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 125. [2018-01-31 09:02:09,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-01-31 09:02:09,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 133 transitions. [2018-01-31 09:02:09,104 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 133 transitions. Word has length 143 [2018-01-31 09:02:09,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:09,104 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 133 transitions. [2018-01-31 09:02:09,104 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-31 09:02:09,104 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 133 transitions. [2018-01-31 09:02:09,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-01-31 09:02:09,105 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:09,106 INFO L351 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:09,106 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolation]=== [2018-01-31 09:02:09,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1412228734, now seen corresponding path program 2 times [2018-01-31 09:02:09,106 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:09,106 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:09,106 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:09,106 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:02:09,106 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:02:09,146 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:02:09,303 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2018-01-31 09:02:09,303 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:02:09,303 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-31 09:02:09,303 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 09:02:09,303 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 09:02:09,304 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-31 09:02:09,304 INFO L87 Difference]: Start difference. First operand 125 states and 133 transitions. Second operand 9 states. [2018-01-31 09:02:09,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:09,426 INFO L93 Difference]: Finished difference Result 210 states and 225 transitions. [2018-01-31 09:02:09,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-31 09:02:09,427 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 159 [2018-01-31 09:02:09,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:09,428 INFO L225 Difference]: With dead ends: 210 [2018-01-31 09:02:09,428 INFO L226 Difference]: Without dead ends: 204 [2018-01-31 09:02:09,428 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-01-31 09:02:09,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-01-31 09:02:09,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 165. [2018-01-31 09:02:09,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-01-31 09:02:09,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 179 transitions. [2018-01-31 09:02:09,441 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 179 transitions. Word has length 159 [2018-01-31 09:02:09,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:09,441 INFO L432 AbstractCegarLoop]: Abstraction has 165 states and 179 transitions. [2018-01-31 09:02:09,442 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 09:02:09,442 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 179 transitions. [2018-01-31 09:02:09,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-01-31 09:02:09,443 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:09,443 INFO L351 BasicCegarLoop]: trace histogram [10, 7, 7, 7, 7, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:09,443 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolation]=== [2018-01-31 09:02:09,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1308538474, now seen corresponding path program 1 times [2018-01-31 09:02:09,443 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:09,443 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:09,444 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:09,444 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:02:09,444 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:09,460 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:09,460 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:09,460 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-31 09:02:09,475 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:02:09,498 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:09,549 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-01-31 09:02:09,566 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:09,566 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-01-31 09:02:09,567 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 09:02:09,567 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 09:02:09,567 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-31 09:02:09,567 INFO L87 Difference]: Start difference. First operand 165 states and 179 transitions. Second operand 9 states. [2018-01-31 09:02:09,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:09,656 INFO L93 Difference]: Finished difference Result 306 states and 334 transitions. [2018-01-31 09:02:09,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-31 09:02:09,659 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 169 [2018-01-31 09:02:09,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:09,660 INFO L225 Difference]: With dead ends: 306 [2018-01-31 09:02:09,660 INFO L226 Difference]: Without dead ends: 178 [2018-01-31 09:02:09,660 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2018-01-31 09:02:09,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-01-31 09:02:09,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 173. [2018-01-31 09:02:09,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-01-31 09:02:09,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 187 transitions. [2018-01-31 09:02:09,666 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 187 transitions. Word has length 169 [2018-01-31 09:02:09,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:09,666 INFO L432 AbstractCegarLoop]: Abstraction has 173 states and 187 transitions. [2018-01-31 09:02:09,666 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 09:02:09,666 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 187 transitions. [2018-01-31 09:02:09,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-01-31 09:02:09,668 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:09,668 INFO L351 BasicCegarLoop]: trace histogram [10, 7, 7, 7, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:09,668 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolation]=== [2018-01-31 09:02:09,668 INFO L82 PathProgramCache]: Analyzing trace with hash 977564863, now seen corresponding path program 2 times [2018-01-31 09:02:09,668 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:09,668 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:09,669 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:09,669 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:02:09,669 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:09,680 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:09,680 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:09,680 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:09,704 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:02:09,729 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:09,750 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:09,752 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:02:09,754 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:09,813 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-01-31 09:02:09,830 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:09,831 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-01-31 09:02:09,831 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-31 09:02:09,831 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-31 09:02:09,831 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-01-31 09:02:09,831 INFO L87 Difference]: Start difference. First operand 173 states and 187 transitions. Second operand 11 states. [2018-01-31 09:02:09,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:09,897 INFO L93 Difference]: Finished difference Result 314 states and 342 transitions. [2018-01-31 09:02:09,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-31 09:02:09,907 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 177 [2018-01-31 09:02:09,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:09,908 INFO L225 Difference]: With dead ends: 314 [2018-01-31 09:02:09,908 INFO L226 Difference]: Without dead ends: 186 [2018-01-31 09:02:09,909 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=123, Invalid=219, Unknown=0, NotChecked=0, Total=342 [2018-01-31 09:02:09,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-01-31 09:02:09,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 181. [2018-01-31 09:02:09,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-01-31 09:02:09,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 195 transitions. [2018-01-31 09:02:09,914 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 195 transitions. Word has length 177 [2018-01-31 09:02:09,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:09,914 INFO L432 AbstractCegarLoop]: Abstraction has 181 states and 195 transitions. [2018-01-31 09:02:09,914 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-31 09:02:09,914 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 195 transitions. [2018-01-31 09:02:09,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-01-31 09:02:09,915 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:09,915 INFO L351 BasicCegarLoop]: trace histogram [10, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:09,915 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolation]=== [2018-01-31 09:02:09,915 INFO L82 PathProgramCache]: Analyzing trace with hash 220358376, now seen corresponding path program 3 times [2018-01-31 09:02:09,915 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:09,916 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:09,916 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:09,916 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:02:09,916 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:09,922 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:09,922 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:09,922 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:09,934 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:02:09,945 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:02:09,949 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:02:09,950 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:02:09,952 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:09,988 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2018-01-31 09:02:10,005 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:02:10,005 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-31 09:02:10,005 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-31 09:02:10,005 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-31 09:02:10,005 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-31 09:02:10,005 INFO L87 Difference]: Start difference. First operand 181 states and 195 transitions. Second operand 5 states. [2018-01-31 09:02:10,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:10,045 INFO L93 Difference]: Finished difference Result 313 states and 349 transitions. [2018-01-31 09:02:10,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-31 09:02:10,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2018-01-31 09:02:10,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:10,055 INFO L225 Difference]: With dead ends: 313 [2018-01-31 09:02:10,055 INFO L226 Difference]: Without dead ends: 192 [2018-01-31 09:02:10,056 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-01-31 09:02:10,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-01-31 09:02:10,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 179. [2018-01-31 09:02:10,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-01-31 09:02:10,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 191 transitions. [2018-01-31 09:02:10,060 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 191 transitions. Word has length 185 [2018-01-31 09:02:10,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:10,060 INFO L432 AbstractCegarLoop]: Abstraction has 179 states and 191 transitions. [2018-01-31 09:02:10,060 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-31 09:02:10,060 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 191 transitions. [2018-01-31 09:02:10,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-01-31 09:02:10,062 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:10,062 INFO L351 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 6, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:10,062 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolation]=== [2018-01-31 09:02:10,062 INFO L82 PathProgramCache]: Analyzing trace with hash -908536472, now seen corresponding path program 1 times [2018-01-31 09:02:10,062 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:10,062 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:10,063 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:10,063 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:02:10,063 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:10,069 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:10,069 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:10,069 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:10,079 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:02:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:02:10,105 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:10,547 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-01-31 09:02:10,566 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:10,567 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-01-31 09:02:10,567 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-31 09:02:10,567 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-31 09:02:10,567 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-31 09:02:10,567 INFO L87 Difference]: Start difference. First operand 179 states and 191 transitions. Second operand 13 states. [2018-01-31 09:02:10,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:10,692 INFO L93 Difference]: Finished difference Result 318 states and 342 transitions. [2018-01-31 09:02:10,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-31 09:02:10,701 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 205 [2018-01-31 09:02:10,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:10,701 INFO L225 Difference]: With dead ends: 318 [2018-01-31 09:02:10,701 INFO L226 Difference]: Without dead ends: 192 [2018-01-31 09:02:10,702 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2018-01-31 09:02:10,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-01-31 09:02:10,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 187. [2018-01-31 09:02:10,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-01-31 09:02:10,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 199 transitions. [2018-01-31 09:02:10,706 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 199 transitions. Word has length 205 [2018-01-31 09:02:10,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:10,706 INFO L432 AbstractCegarLoop]: Abstraction has 187 states and 199 transitions. [2018-01-31 09:02:10,706 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-31 09:02:10,706 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 199 transitions. [2018-01-31 09:02:10,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-01-31 09:02:10,708 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:10,708 INFO L351 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 7, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:10,708 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolation]=== [2018-01-31 09:02:10,708 INFO L82 PathProgramCache]: Analyzing trace with hash 50552849, now seen corresponding path program 2 times [2018-01-31 09:02:10,708 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:10,708 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:10,709 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:10,709 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:02:10,709 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:10,715 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:10,715 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:10,715 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:10,720 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:02:10,730 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:10,749 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:10,752 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:02:10,754 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:10,836 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-01-31 09:02:10,853 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:10,853 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-01-31 09:02:10,853 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-31 09:02:10,853 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-31 09:02:10,853 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-31 09:02:10,854 INFO L87 Difference]: Start difference. First operand 187 states and 199 transitions. Second operand 15 states. [2018-01-31 09:02:11,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:11,035 INFO L93 Difference]: Finished difference Result 326 states and 350 transitions. [2018-01-31 09:02:11,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-31 09:02:11,046 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 213 [2018-01-31 09:02:11,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:11,047 INFO L225 Difference]: With dead ends: 326 [2018-01-31 09:02:11,047 INFO L226 Difference]: Without dead ends: 200 [2018-01-31 09:02:11,047 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=243, Invalid=459, Unknown=0, NotChecked=0, Total=702 [2018-01-31 09:02:11,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-01-31 09:02:11,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 195. [2018-01-31 09:02:11,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-01-31 09:02:11,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 207 transitions. [2018-01-31 09:02:11,051 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 207 transitions. Word has length 213 [2018-01-31 09:02:11,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:11,051 INFO L432 AbstractCegarLoop]: Abstraction has 195 states and 207 transitions. [2018-01-31 09:02:11,051 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-31 09:02:11,051 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 207 transitions. [2018-01-31 09:02:11,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-01-31 09:02:11,052 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:11,052 INFO L351 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:11,052 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolation]=== [2018-01-31 09:02:11,053 INFO L82 PathProgramCache]: Analyzing trace with hash 925970874, now seen corresponding path program 3 times [2018-01-31 09:02:11,053 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:11,053 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:11,053 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:11,053 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:02:11,053 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:11,059 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:11,059 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:11,060 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:11,070 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:02:11,081 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:02:11,085 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:02:11,094 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:02:11,095 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:02:11,097 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:11,148 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 106 proven. 5 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2018-01-31 09:02:11,165 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:11,165 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-01-31 09:02:11,165 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-31 09:02:11,165 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-31 09:02:11,165 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-31 09:02:11,165 INFO L87 Difference]: Start difference. First operand 195 states and 207 transitions. Second operand 7 states. [2018-01-31 09:02:11,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:11,229 INFO L93 Difference]: Finished difference Result 331 states and 364 transitions. [2018-01-31 09:02:11,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-31 09:02:11,230 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 221 [2018-01-31 09:02:11,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:11,231 INFO L225 Difference]: With dead ends: 331 [2018-01-31 09:02:11,231 INFO L226 Difference]: Without dead ends: 212 [2018-01-31 09:02:11,232 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2018-01-31 09:02:11,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-01-31 09:02:11,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 205. [2018-01-31 09:02:11,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-01-31 09:02:11,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 218 transitions. [2018-01-31 09:02:11,236 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 218 transitions. Word has length 221 [2018-01-31 09:02:11,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:11,237 INFO L432 AbstractCegarLoop]: Abstraction has 205 states and 218 transitions. [2018-01-31 09:02:11,237 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-31 09:02:11,237 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 218 transitions. [2018-01-31 09:02:11,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-01-31 09:02:11,238 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:11,238 INFO L351 BasicCegarLoop]: trace histogram [15, 12, 12, 12, 12, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:11,238 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolation]=== [2018-01-31 09:02:11,238 INFO L82 PathProgramCache]: Analyzing trace with hash -451765490, now seen corresponding path program 4 times [2018-01-31 09:02:11,238 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:11,238 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:11,238 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:11,239 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:02:11,239 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:11,245 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:11,245 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:11,245 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:11,254 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:02:11,301 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:02:11,303 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:11,457 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2018-01-31 09:02:11,474 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:11,474 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-01-31 09:02:11,474 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-31 09:02:11,475 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-31 09:02:11,475 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-01-31 09:02:11,475 INFO L87 Difference]: Start difference. First operand 205 states and 218 transitions. Second operand 17 states. [2018-01-31 09:02:11,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:11,617 INFO L93 Difference]: Finished difference Result 354 states and 380 transitions. [2018-01-31 09:02:11,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-31 09:02:11,627 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 251 [2018-01-31 09:02:11,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:11,628 INFO L225 Difference]: With dead ends: 354 [2018-01-31 09:02:11,628 INFO L226 Difference]: Without dead ends: 218 [2018-01-31 09:02:11,629 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=318, Invalid=612, Unknown=0, NotChecked=0, Total=930 [2018-01-31 09:02:11,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-01-31 09:02:11,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 213. [2018-01-31 09:02:11,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-01-31 09:02:11,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 226 transitions. [2018-01-31 09:02:11,636 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 226 transitions. Word has length 251 [2018-01-31 09:02:11,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:11,636 INFO L432 AbstractCegarLoop]: Abstraction has 213 states and 226 transitions. [2018-01-31 09:02:11,636 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-31 09:02:11,636 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 226 transitions. [2018-01-31 09:02:11,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-01-31 09:02:11,637 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:11,637 INFO L351 BasicCegarLoop]: trace histogram [15, 12, 12, 12, 12, 9, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:11,637 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolation]=== [2018-01-31 09:02:11,637 INFO L82 PathProgramCache]: Analyzing trace with hash 184477175, now seen corresponding path program 5 times [2018-01-31 09:02:11,637 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:11,637 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:11,638 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:11,638 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:02:11,638 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:11,645 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:11,645 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:11,645 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 (exit command is (exit), workingDir is null) [2018-01-31 09:02:11,651 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:11,661 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:11,662 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:11,663 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:11,665 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:11,668 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:11,672 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:11,679 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:11,681 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:02:11,683 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:12,067 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 171 proven. 12 refuted. 0 times theorem prover too weak. 633 trivial. 0 not checked. [2018-01-31 09:02:12,084 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:12,084 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-01-31 09:02:12,085 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-31 09:02:12,085 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-31 09:02:12,085 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-31 09:02:12,085 INFO L87 Difference]: Start difference. First operand 213 states and 226 transitions. Second operand 7 states. [2018-01-31 09:02:12,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:12,217 INFO L93 Difference]: Finished difference Result 350 states and 383 transitions. [2018-01-31 09:02:12,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-31 09:02:12,221 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 259 [2018-01-31 09:02:12,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:12,222 INFO L225 Difference]: With dead ends: 350 [2018-01-31 09:02:12,222 INFO L226 Difference]: Without dead ends: 221 [2018-01-31 09:02:12,222 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2018-01-31 09:02:12,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-01-31 09:02:12,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 219. [2018-01-31 09:02:12,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-01-31 09:02:12,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 232 transitions. [2018-01-31 09:02:12,229 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 232 transitions. Word has length 259 [2018-01-31 09:02:12,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:12,229 INFO L432 AbstractCegarLoop]: Abstraction has 219 states and 232 transitions. [2018-01-31 09:02:12,229 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-31 09:02:12,229 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 232 transitions. [2018-01-31 09:02:12,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-01-31 09:02:12,230 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:12,230 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 9, 9, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:12,230 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolation]=== [2018-01-31 09:02:12,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1105735631, now seen corresponding path program 6 times [2018-01-31 09:02:12,230 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:12,231 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:12,232 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:12,232 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:02:12,232 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:12,240 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:12,240 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:12,241 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 (exit command is (exit), workingDir is null) [2018-01-31 09:02:12,258 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:12,269 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:12,272 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:12,276 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:12,281 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:12,288 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:12,324 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:12,370 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:12,371 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:02:12,374 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:12,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 396 proven. 12 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-01-31 09:02:12,448 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:12,448 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-01-31 09:02:12,448 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-31 09:02:12,449 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-31 09:02:12,449 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-31 09:02:12,449 INFO L87 Difference]: Start difference. First operand 219 states and 232 transitions. Second operand 7 states. [2018-01-31 09:02:12,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:12,498 INFO L93 Difference]: Finished difference Result 308 states and 327 transitions. [2018-01-31 09:02:12,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-31 09:02:12,511 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 277 [2018-01-31 09:02:12,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:12,512 INFO L225 Difference]: With dead ends: 308 [2018-01-31 09:02:12,512 INFO L226 Difference]: Without dead ends: 245 [2018-01-31 09:02:12,512 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2018-01-31 09:02:12,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-01-31 09:02:12,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 235. [2018-01-31 09:02:12,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-01-31 09:02:12,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 248 transitions. [2018-01-31 09:02:12,517 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 248 transitions. Word has length 277 [2018-01-31 09:02:12,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:12,517 INFO L432 AbstractCegarLoop]: Abstraction has 235 states and 248 transitions. [2018-01-31 09:02:12,517 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-31 09:02:12,517 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 248 transitions. [2018-01-31 09:02:12,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-01-31 09:02:12,518 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:12,519 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 9, 9, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:12,519 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolation]=== [2018-01-31 09:02:12,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1157525306, now seen corresponding path program 7 times [2018-01-31 09:02:12,519 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:12,519 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:12,519 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:12,519 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:02:12,519 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:12,527 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:12,528 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:12,528 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 (exit command is (exit), workingDir is null) [2018-01-31 09:02:12,537 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:02:12,567 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:13,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 846 trivial. 0 not checked. [2018-01-31 09:02:13,065 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:13,065 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-01-31 09:02:13,065 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-31 09:02:13,065 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-31 09:02:13,066 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-31 09:02:13,066 INFO L87 Difference]: Start difference. First operand 235 states and 248 transitions. Second operand 19 states. [2018-01-31 09:02:13,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:13,343 INFO L93 Difference]: Finished difference Result 406 states and 432 transitions. [2018-01-31 09:02:13,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-31 09:02:13,345 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 285 [2018-01-31 09:02:13,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:13,345 INFO L225 Difference]: With dead ends: 406 [2018-01-31 09:02:13,346 INFO L226 Difference]: Without dead ends: 248 [2018-01-31 09:02:13,346 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=403, Invalid=787, Unknown=0, NotChecked=0, Total=1190 [2018-01-31 09:02:13,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-01-31 09:02:13,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 243. [2018-01-31 09:02:13,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-01-31 09:02:13,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 256 transitions. [2018-01-31 09:02:13,350 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 256 transitions. Word has length 285 [2018-01-31 09:02:13,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:13,350 INFO L432 AbstractCegarLoop]: Abstraction has 243 states and 256 transitions. [2018-01-31 09:02:13,350 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-31 09:02:13,350 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 256 transitions. [2018-01-31 09:02:13,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-01-31 09:02:13,351 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:13,351 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 10, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:13,351 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolation]=== [2018-01-31 09:02:13,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1465786001, now seen corresponding path program 8 times [2018-01-31 09:02:13,352 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:13,352 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:13,352 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:13,352 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:02:13,352 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:13,359 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:13,359 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:13,359 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:13,368 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:02:13,379 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:13,396 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:13,399 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:02:13,402 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:13,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 846 trivial. 0 not checked. [2018-01-31 09:02:13,575 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:13,575 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-01-31 09:02:13,575 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 09:02:13,575 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 09:02:13,575 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-31 09:02:13,575 INFO L87 Difference]: Start difference. First operand 243 states and 256 transitions. Second operand 21 states. [2018-01-31 09:02:13,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:13,837 INFO L93 Difference]: Finished difference Result 414 states and 440 transitions. [2018-01-31 09:02:13,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-31 09:02:13,840 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 293 [2018-01-31 09:02:13,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:13,841 INFO L225 Difference]: With dead ends: 414 [2018-01-31 09:02:13,841 INFO L226 Difference]: Without dead ends: 256 [2018-01-31 09:02:13,841 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=498, Invalid=984, Unknown=0, NotChecked=0, Total=1482 [2018-01-31 09:02:13,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-01-31 09:02:13,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 251. [2018-01-31 09:02:13,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-01-31 09:02:13,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 264 transitions. [2018-01-31 09:02:13,848 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 264 transitions. Word has length 293 [2018-01-31 09:02:13,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:13,849 INFO L432 AbstractCegarLoop]: Abstraction has 251 states and 264 transitions. [2018-01-31 09:02:13,849 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 09:02:13,849 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 264 transitions. [2018-01-31 09:02:13,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-01-31 09:02:13,850 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:13,850 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 11, 10, 10, 10, 10, 10, 10, 10, 9, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:13,850 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolation]=== [2018-01-31 09:02:13,850 INFO L82 PathProgramCache]: Analyzing trace with hash 975141144, now seen corresponding path program 9 times [2018-01-31 09:02:13,850 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:13,850 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:13,856 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:13,856 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:02:13,856 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:13,865 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:13,865 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:13,865 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:13,874 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:02:13,892 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:02:13,896 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:02:13,943 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:02:14,101 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:02:14,215 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:02:14,217 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:02:14,220 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:14,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 264 proven. 20 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2018-01-31 09:02:14,863 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:14,863 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-01-31 09:02:14,864 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 09:02:14,864 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 09:02:14,864 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-31 09:02:14,864 INFO L87 Difference]: Start difference. First operand 251 states and 264 transitions. Second operand 9 states. [2018-01-31 09:02:15,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:15,290 INFO L93 Difference]: Finished difference Result 419 states and 454 transitions. [2018-01-31 09:02:15,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-31 09:02:15,291 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 301 [2018-01-31 09:02:15,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:15,292 INFO L225 Difference]: With dead ends: 419 [2018-01-31 09:02:15,292 INFO L226 Difference]: Without dead ends: 268 [2018-01-31 09:02:15,292 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2018-01-31 09:02:15,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-01-31 09:02:15,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 261. [2018-01-31 09:02:15,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-01-31 09:02:15,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 275 transitions. [2018-01-31 09:02:15,296 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 275 transitions. Word has length 301 [2018-01-31 09:02:15,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:15,297 INFO L432 AbstractCegarLoop]: Abstraction has 261 states and 275 transitions. [2018-01-31 09:02:15,297 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 09:02:15,297 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 275 transitions. [2018-01-31 09:02:15,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-01-31 09:02:15,298 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:15,298 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:15,298 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolation]=== [2018-01-31 09:02:15,298 INFO L82 PathProgramCache]: Analyzing trace with hash -16885140, now seen corresponding path program 10 times [2018-01-31 09:02:15,298 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:15,298 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:15,299 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:15,299 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:02:15,299 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:15,306 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:15,306 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:15,306 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:15,319 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:02:15,407 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:02:15,410 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:15,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1616 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 1236 trivial. 0 not checked. [2018-01-31 09:02:15,587 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:15,587 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-01-31 09:02:15,588 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-31 09:02:15,588 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-31 09:02:15,588 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-01-31 09:02:15,588 INFO L87 Difference]: Start difference. First operand 261 states and 275 transitions. Second operand 23 states. [2018-01-31 09:02:15,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:15,842 INFO L93 Difference]: Finished difference Result 442 states and 470 transitions. [2018-01-31 09:02:15,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-31 09:02:15,843 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 331 [2018-01-31 09:02:15,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:15,844 INFO L225 Difference]: With dead ends: 442 [2018-01-31 09:02:15,844 INFO L226 Difference]: Without dead ends: 274 [2018-01-31 09:02:15,844 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=603, Invalid=1203, Unknown=0, NotChecked=0, Total=1806 [2018-01-31 09:02:15,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-01-31 09:02:15,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 269. [2018-01-31 09:02:15,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-01-31 09:02:15,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 283 transitions. [2018-01-31 09:02:15,848 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 283 transitions. Word has length 331 [2018-01-31 09:02:15,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:15,849 INFO L432 AbstractCegarLoop]: Abstraction has 269 states and 283 transitions. [2018-01-31 09:02:15,849 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-31 09:02:15,849 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 283 transitions. [2018-01-31 09:02:15,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-01-31 09:02:15,850 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:15,850 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 12, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:15,850 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolation]=== [2018-01-31 09:02:15,850 INFO L82 PathProgramCache]: Analyzing trace with hash -835327147, now seen corresponding path program 11 times [2018-01-31 09:02:15,850 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:15,850 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:15,851 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:15,851 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:02:15,851 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:15,858 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:15,858 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:15,858 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:15,875 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:02:15,883 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:15,884 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:15,885 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:15,887 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:15,890 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:15,893 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:15,897 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:15,902 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:15,907 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:15,916 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:15,918 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:02:15,920 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:16,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1698 backedges. 339 proven. 27 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2018-01-31 09:02:16,031 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:16,031 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-01-31 09:02:16,033 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 09:02:16,033 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 09:02:16,033 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-31 09:02:16,033 INFO L87 Difference]: Start difference. First operand 269 states and 283 transitions. Second operand 9 states. [2018-01-31 09:02:16,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:16,107 INFO L93 Difference]: Finished difference Result 438 states and 473 transitions. [2018-01-31 09:02:16,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-31 09:02:16,113 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 339 [2018-01-31 09:02:16,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:16,114 INFO L225 Difference]: With dead ends: 438 [2018-01-31 09:02:16,114 INFO L226 Difference]: Without dead ends: 277 [2018-01-31 09:02:16,114 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2018-01-31 09:02:16,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-01-31 09:02:16,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2018-01-31 09:02:16,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-01-31 09:02:16,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 289 transitions. [2018-01-31 09:02:16,118 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 289 transitions. Word has length 339 [2018-01-31 09:02:16,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:16,119 INFO L432 AbstractCegarLoop]: Abstraction has 275 states and 289 transitions. [2018-01-31 09:02:16,119 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 09:02:16,119 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 289 transitions. [2018-01-31 09:02:16,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-01-31 09:02:16,120 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:16,120 INFO L351 BasicCegarLoop]: trace histogram [24, 21, 21, 21, 21, 12, 12, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:16,120 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolation]=== [2018-01-31 09:02:16,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1085622739, now seen corresponding path program 12 times [2018-01-31 09:02:16,120 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:16,120 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:16,121 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:16,121 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:02:16,121 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:16,128 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:16,128 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:16,128 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:16,147 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:02:16,159 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:16,161 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:16,165 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:16,171 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:16,178 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:16,203 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:16,233 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:16,288 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:16,333 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:16,335 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:02:16,337 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:16,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2058 backedges. 740 proven. 30 refuted. 0 times theorem prover too weak. 1288 trivial. 0 not checked. [2018-01-31 09:02:16,431 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:16,431 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-01-31 09:02:16,431 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 09:02:16,431 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 09:02:16,431 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-31 09:02:16,431 INFO L87 Difference]: Start difference. First operand 275 states and 289 transitions. Second operand 9 states. [2018-01-31 09:02:16,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:16,488 INFO L93 Difference]: Finished difference Result 380 states and 401 transitions. [2018-01-31 09:02:16,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-31 09:02:16,490 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 357 [2018-01-31 09:02:16,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:16,491 INFO L225 Difference]: With dead ends: 380 [2018-01-31 09:02:16,491 INFO L226 Difference]: Without dead ends: 301 [2018-01-31 09:02:16,491 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2018-01-31 09:02:16,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-01-31 09:02:16,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 291. [2018-01-31 09:02:16,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-01-31 09:02:16,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 305 transitions. [2018-01-31 09:02:16,496 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 305 transitions. Word has length 357 [2018-01-31 09:02:16,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:16,496 INFO L432 AbstractCegarLoop]: Abstraction has 291 states and 305 transitions. [2018-01-31 09:02:16,496 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 09:02:16,496 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 305 transitions. [2018-01-31 09:02:16,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-01-31 09:02:16,498 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:16,498 INFO L351 BasicCegarLoop]: trace histogram [24, 21, 21, 21, 21, 12, 12, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:16,498 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr0AssertViolation]=== [2018-01-31 09:02:16,498 INFO L82 PathProgramCache]: Analyzing trace with hash 2060236580, now seen corresponding path program 13 times [2018-01-31 09:02:16,498 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:16,498 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:16,499 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:16,499 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:02:16,499 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:16,506 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:16,506 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:16,506 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:16,517 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:02:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:02:16,554 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:17,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2084 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 1622 trivial. 0 not checked. [2018-01-31 09:02:17,092 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:17,093 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-01-31 09:02:17,093 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-31 09:02:17,093 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-31 09:02:17,093 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-01-31 09:02:17,093 INFO L87 Difference]: Start difference. First operand 291 states and 305 transitions. Second operand 25 states. [2018-01-31 09:02:17,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:17,316 INFO L93 Difference]: Finished difference Result 494 states and 522 transitions. [2018-01-31 09:02:17,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-31 09:02:17,316 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 365 [2018-01-31 09:02:17,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:17,317 INFO L225 Difference]: With dead ends: 494 [2018-01-31 09:02:17,317 INFO L226 Difference]: Without dead ends: 304 [2018-01-31 09:02:17,318 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=718, Invalid=1444, Unknown=0, NotChecked=0, Total=2162 [2018-01-31 09:02:17,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-01-31 09:02:17,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 299. [2018-01-31 09:02:17,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-01-31 09:02:17,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 313 transitions. [2018-01-31 09:02:17,322 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 313 transitions. Word has length 365 [2018-01-31 09:02:17,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:17,322 INFO L432 AbstractCegarLoop]: Abstraction has 299 states and 313 transitions. [2018-01-31 09:02:17,322 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-31 09:02:17,322 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 313 transitions. [2018-01-31 09:02:17,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-01-31 09:02:17,323 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:17,323 INFO L351 BasicCegarLoop]: trace histogram [24, 21, 21, 21, 21, 13, 12, 12, 12, 12, 12, 12, 12, 12, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:17,324 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr0AssertViolation]=== [2018-01-31 09:02:17,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1130810829, now seen corresponding path program 14 times [2018-01-31 09:02:17,324 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:17,324 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:17,324 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:17,324 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:02:17,324 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:17,332 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:17,332 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:17,332 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:17,344 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:02:17,356 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:17,377 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:17,381 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:02:17,383 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:17,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2174 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 1622 trivial. 0 not checked. [2018-01-31 09:02:17,600 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:17,600 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-01-31 09:02:17,600 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-31 09:02:17,600 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-31 09:02:17,600 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2018-01-31 09:02:17,601 INFO L87 Difference]: Start difference. First operand 299 states and 313 transitions. Second operand 27 states. [2018-01-31 09:02:17,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:17,979 INFO L93 Difference]: Finished difference Result 502 states and 530 transitions. [2018-01-31 09:02:17,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-01-31 09:02:17,980 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 373 [2018-01-31 09:02:17,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:17,980 INFO L225 Difference]: With dead ends: 502 [2018-01-31 09:02:17,980 INFO L226 Difference]: Without dead ends: 312 [2018-01-31 09:02:17,981 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=843, Invalid=1707, Unknown=0, NotChecked=0, Total=2550 [2018-01-31 09:02:17,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2018-01-31 09:02:17,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 307. [2018-01-31 09:02:17,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-01-31 09:02:17,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 321 transitions. [2018-01-31 09:02:17,989 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 321 transitions. Word has length 373 [2018-01-31 09:02:17,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:17,989 INFO L432 AbstractCegarLoop]: Abstraction has 307 states and 321 transitions. [2018-01-31 09:02:17,989 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-31 09:02:17,989 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 321 transitions. [2018-01-31 09:02:17,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2018-01-31 09:02:17,990 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:17,990 INFO L351 BasicCegarLoop]: trace histogram [24, 21, 21, 21, 21, 14, 13, 13, 13, 13, 13, 13, 13, 12, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:17,990 INFO L371 AbstractCegarLoop]: === Iteration 25 === [mainErr0AssertViolation]=== [2018-01-31 09:02:17,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1799869578, now seen corresponding path program 15 times [2018-01-31 09:02:17,991 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:17,991 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:17,992 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:17,992 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:02:17,992 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:18,000 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:18,000 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:18,000 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:18,007 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:02:18,020 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:02:18,024 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:02:18,078 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:02:18,091 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:02:18,128 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:02:18,149 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:02:18,151 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:02:18,153 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:18,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2272 backedges. 498 proven. 45 refuted. 0 times theorem prover too weak. 1729 trivial. 0 not checked. [2018-01-31 09:02:18,270 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:18,270 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-01-31 09:02:18,271 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-31 09:02:18,271 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-31 09:02:18,271 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-01-31 09:02:18,271 INFO L87 Difference]: Start difference. First operand 307 states and 321 transitions. Second operand 11 states. [2018-01-31 09:02:18,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:18,338 INFO L93 Difference]: Finished difference Result 507 states and 544 transitions. [2018-01-31 09:02:18,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-31 09:02:18,339 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 381 [2018-01-31 09:02:18,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:18,340 INFO L225 Difference]: With dead ends: 507 [2018-01-31 09:02:18,340 INFO L226 Difference]: Without dead ends: 324 [2018-01-31 09:02:18,340 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=123, Invalid=219, Unknown=0, NotChecked=0, Total=342 [2018-01-31 09:02:18,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-01-31 09:02:18,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 317. [2018-01-31 09:02:18,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-01-31 09:02:18,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 332 transitions. [2018-01-31 09:02:18,345 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 332 transitions. Word has length 381 [2018-01-31 09:02:18,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:18,345 INFO L432 AbstractCegarLoop]: Abstraction has 317 states and 332 transitions. [2018-01-31 09:02:18,345 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-31 09:02:18,345 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 332 transitions. [2018-01-31 09:02:18,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-01-31 09:02:18,347 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:18,347 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:18,347 INFO L371 AbstractCegarLoop]: === Iteration 26 === [mainErr0AssertViolation]=== [2018-01-31 09:02:18,348 INFO L82 PathProgramCache]: Analyzing trace with hash 175441098, now seen corresponding path program 16 times [2018-01-31 09:02:18,348 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:18,348 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:18,348 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:18,348 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:02:18,348 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:18,356 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:18,356 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:18,356 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:18,377 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:02:18,475 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:02:18,479 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:19,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2806 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 2156 trivial. 0 not checked. [2018-01-31 09:02:19,377 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:19,377 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-01-31 09:02:19,377 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-31 09:02:19,377 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-31 09:02:19,377 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2018-01-31 09:02:19,378 INFO L87 Difference]: Start difference. First operand 317 states and 332 transitions. Second operand 29 states. [2018-01-31 09:02:19,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:19,929 INFO L93 Difference]: Finished difference Result 530 states and 560 transitions. [2018-01-31 09:02:19,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-31 09:02:19,931 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 411 [2018-01-31 09:02:19,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:19,931 INFO L225 Difference]: With dead ends: 530 [2018-01-31 09:02:19,932 INFO L226 Difference]: Without dead ends: 330 [2018-01-31 09:02:19,932 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=978, Invalid=1992, Unknown=0, NotChecked=0, Total=2970 [2018-01-31 09:02:19,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2018-01-31 09:02:19,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 325. [2018-01-31 09:02:19,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-01-31 09:02:19,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 340 transitions. [2018-01-31 09:02:19,937 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 340 transitions. Word has length 411 [2018-01-31 09:02:19,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:19,937 INFO L432 AbstractCegarLoop]: Abstraction has 325 states and 340 transitions. [2018-01-31 09:02:19,937 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-31 09:02:19,937 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 340 transitions. [2018-01-31 09:02:19,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2018-01-31 09:02:19,938 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:19,938 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 15, 14, 14, 14, 14, 14, 14, 14, 12, 12, 12, 12, 12, 12, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:19,939 INFO L371 AbstractCegarLoop]: === Iteration 27 === [mainErr0AssertViolation]=== [2018-01-31 09:02:19,939 INFO L82 PathProgramCache]: Analyzing trace with hash -495199309, now seen corresponding path program 17 times [2018-01-31 09:02:19,939 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:19,939 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:19,939 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:19,939 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:02:19,939 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:19,950 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:19,950 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:19,950 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 (exit command is (exit), workingDir is null) [2018-01-31 09:02:19,961 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:19,971 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:19,972 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:19,973 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:19,975 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:19,976 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:19,979 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:19,982 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:19,987 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:19,993 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:20,000 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:20,010 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:20,026 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:20,116 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:20,117 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:02:20,120 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:20,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2912 backedges. 567 proven. 48 refuted. 0 times theorem prover too weak. 2297 trivial. 0 not checked. [2018-01-31 09:02:20,235 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:20,236 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-01-31 09:02:20,236 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-31 09:02:20,236 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-31 09:02:20,236 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-01-31 09:02:20,236 INFO L87 Difference]: Start difference. First operand 325 states and 340 transitions. Second operand 11 states. [2018-01-31 09:02:20,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:20,312 INFO L93 Difference]: Finished difference Result 526 states and 563 transitions. [2018-01-31 09:02:20,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-31 09:02:20,313 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 419 [2018-01-31 09:02:20,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:20,314 INFO L225 Difference]: With dead ends: 526 [2018-01-31 09:02:20,314 INFO L226 Difference]: Without dead ends: 333 [2018-01-31 09:02:20,314 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=123, Invalid=219, Unknown=0, NotChecked=0, Total=342 [2018-01-31 09:02:20,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-01-31 09:02:20,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 331. [2018-01-31 09:02:20,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-01-31 09:02:20,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 346 transitions. [2018-01-31 09:02:20,319 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 346 transitions. Word has length 419 [2018-01-31 09:02:20,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:20,319 INFO L432 AbstractCegarLoop]: Abstraction has 331 states and 346 transitions. [2018-01-31 09:02:20,319 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-31 09:02:20,319 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 346 transitions. [2018-01-31 09:02:20,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2018-01-31 09:02:20,321 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:20,321 INFO L351 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 15, 15, 14, 14, 14, 14, 14, 14, 14, 12, 12, 12, 12, 12, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:20,321 INFO L371 AbstractCegarLoop]: === Iteration 28 === [mainErr0AssertViolation]=== [2018-01-31 09:02:20,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1493538933, now seen corresponding path program 18 times [2018-01-31 09:02:20,321 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:20,322 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:20,322 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:20,322 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:02:20,322 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:20,330 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:20,330 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:20,330 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:20,350 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:02:20,363 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:20,366 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:20,370 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:20,373 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:20,379 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:20,446 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:20,475 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:20,502 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:20,585 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:20,676 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:20,807 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:20,809 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:02:20,812 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:20,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3380 backedges. 1196 proven. 56 refuted. 0 times theorem prover too weak. 2128 trivial. 0 not checked. [2018-01-31 09:02:20,981 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:20,981 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-01-31 09:02:20,982 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-31 09:02:20,982 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-31 09:02:20,982 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-01-31 09:02:20,982 INFO L87 Difference]: Start difference. First operand 331 states and 346 transitions. Second operand 11 states. [2018-01-31 09:02:21,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:21,062 INFO L93 Difference]: Finished difference Result 452 states and 475 transitions. [2018-01-31 09:02:21,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-31 09:02:21,062 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 437 [2018-01-31 09:02:21,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:21,063 INFO L225 Difference]: With dead ends: 452 [2018-01-31 09:02:21,063 INFO L226 Difference]: Without dead ends: 357 [2018-01-31 09:02:21,063 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=219, Unknown=0, NotChecked=0, Total=342 [2018-01-31 09:02:21,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-01-31 09:02:21,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 347. [2018-01-31 09:02:21,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-01-31 09:02:21,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 362 transitions. [2018-01-31 09:02:21,067 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 362 transitions. Word has length 437 [2018-01-31 09:02:21,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:21,068 INFO L432 AbstractCegarLoop]: Abstraction has 347 states and 362 transitions. [2018-01-31 09:02:21,068 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-31 09:02:21,068 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 362 transitions. [2018-01-31 09:02:21,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2018-01-31 09:02:21,069 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:21,070 INFO L351 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 15, 15, 14, 14, 14, 14, 14, 14, 14, 12, 12, 12, 12, 12, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:21,070 INFO L371 AbstractCegarLoop]: === Iteration 29 === [mainErr0AssertViolation]=== [2018-01-31 09:02:21,070 INFO L82 PathProgramCache]: Analyzing trace with hash -556857214, now seen corresponding path program 19 times [2018-01-31 09:02:21,070 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:21,070 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:21,070 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:21,070 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:02:21,070 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:21,078 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:21,078 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:21,078 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:21,092 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:02:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:02:21,138 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3414 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 2658 trivial. 0 not checked. [2018-01-31 09:02:21,588 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:21,589 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-01-31 09:02:21,589 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-31 09:02:21,589 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-31 09:02:21,589 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-31 09:02:21,589 INFO L87 Difference]: Start difference. First operand 347 states and 362 transitions. Second operand 31 states. [2018-01-31 09:02:21,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:21,910 INFO L93 Difference]: Finished difference Result 582 states and 612 transitions. [2018-01-31 09:02:21,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-31 09:02:21,911 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 445 [2018-01-31 09:02:21,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:21,912 INFO L225 Difference]: With dead ends: 582 [2018-01-31 09:02:21,912 INFO L226 Difference]: Without dead ends: 360 [2018-01-31 09:02:21,913 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1123, Invalid=2299, Unknown=0, NotChecked=0, Total=3422 [2018-01-31 09:02:21,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2018-01-31 09:02:21,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 355. [2018-01-31 09:02:21,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-01-31 09:02:21,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 370 transitions. [2018-01-31 09:02:21,924 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 370 transitions. Word has length 445 [2018-01-31 09:02:21,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:21,925 INFO L432 AbstractCegarLoop]: Abstraction has 355 states and 370 transitions. [2018-01-31 09:02:21,925 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-31 09:02:21,925 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 370 transitions. [2018-01-31 09:02:21,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2018-01-31 09:02:21,926 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:21,927 INFO L351 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 16, 15, 15, 15, 15, 15, 15, 15, 15, 12, 12, 12, 12, 12, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:21,927 INFO L371 AbstractCegarLoop]: === Iteration 30 === [mainErr0AssertViolation]=== [2018-01-31 09:02:21,927 INFO L82 PathProgramCache]: Analyzing trace with hash 15131947, now seen corresponding path program 20 times [2018-01-31 09:02:21,927 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:21,927 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:21,927 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:21,928 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:02:21,928 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:21,936 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:21,936 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:21,936 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-31 09:02:21,944 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:21,957 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:21,983 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:21,987 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:02:21,990 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:22,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3528 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 2658 trivial. 0 not checked. [2018-01-31 09:02:22,491 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:22,491 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-01-31 09:02:22,491 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-31 09:02:22,491 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-31 09:02:22,492 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 09:02:22,492 INFO L87 Difference]: Start difference. First operand 355 states and 370 transitions. Second operand 33 states. [2018-01-31 09:02:22,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:22,799 INFO L93 Difference]: Finished difference Result 590 states and 620 transitions. [2018-01-31 09:02:22,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-01-31 09:02:22,799 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 453 [2018-01-31 09:02:22,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:22,800 INFO L225 Difference]: With dead ends: 590 [2018-01-31 09:02:22,800 INFO L226 Difference]: Without dead ends: 368 [2018-01-31 09:02:22,801 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1278, Invalid=2628, Unknown=0, NotChecked=0, Total=3906 [2018-01-31 09:02:22,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2018-01-31 09:02:22,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 363. [2018-01-31 09:02:22,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-01-31 09:02:22,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 378 transitions. [2018-01-31 09:02:22,805 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 378 transitions. Word has length 453 [2018-01-31 09:02:22,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:22,805 INFO L432 AbstractCegarLoop]: Abstraction has 363 states and 378 transitions. [2018-01-31 09:02:22,805 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-31 09:02:22,805 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 378 transitions. [2018-01-31 09:02:22,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2018-01-31 09:02:22,807 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:22,807 INFO L351 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 17, 16, 16, 16, 16, 16, 16, 16, 15, 12, 12, 12, 12, 12, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:22,807 INFO L371 AbstractCegarLoop]: === Iteration 31 === [mainErr0AssertViolation]=== [2018-01-31 09:02:22,807 INFO L82 PathProgramCache]: Analyzing trace with hash -862975788, now seen corresponding path program 21 times [2018-01-31 09:02:22,807 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:22,808 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:22,808 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:22,808 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:02:22,808 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:22,816 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:22,816 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:22,816 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:22,832 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:02:22,845 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:02:22,850 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:02:22,857 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:02:22,872 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:02:22,921 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:02:22,962 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:02:23,014 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:02:23,015 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:02:23,018 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:23,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 1196 proven. 90 refuted. 0 times theorem prover too weak. 2364 trivial. 0 not checked. [2018-01-31 09:02:23,214 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:23,214 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-01-31 09:02:23,214 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-31 09:02:23,214 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-31 09:02:23,214 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-31 09:02:23,214 INFO L87 Difference]: Start difference. First operand 363 states and 378 transitions. Second operand 13 states. [2018-01-31 09:02:23,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:23,309 INFO L93 Difference]: Finished difference Result 484 states and 507 transitions. [2018-01-31 09:02:23,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-31 09:02:23,314 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 461 [2018-01-31 09:02:23,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:23,315 INFO L225 Difference]: With dead ends: 484 [2018-01-31 09:02:23,315 INFO L226 Difference]: Without dead ends: 389 [2018-01-31 09:02:23,316 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2018-01-31 09:02:23,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2018-01-31 09:02:23,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 379. [2018-01-31 09:02:23,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-01-31 09:02:23,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 394 transitions. [2018-01-31 09:02:23,323 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 394 transitions. Word has length 461 [2018-01-31 09:02:23,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:23,323 INFO L432 AbstractCegarLoop]: Abstraction has 379 states and 394 transitions. [2018-01-31 09:02:23,323 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-31 09:02:23,323 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 394 transitions. [2018-01-31 09:02:23,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2018-01-31 09:02:23,330 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:23,330 INFO L351 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 17, 16, 16, 16, 16, 16, 16, 16, 15, 12, 12, 12, 12, 12, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:23,330 INFO L371 AbstractCegarLoop]: === Iteration 32 === [mainErr0AssertViolation]=== [2018-01-31 09:02:23,330 INFO L82 PathProgramCache]: Analyzing trace with hash -256421685, now seen corresponding path program 22 times [2018-01-31 09:02:23,330 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:23,330 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:23,331 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:23,331 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:02:23,331 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:23,341 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:23,342 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:23,342 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-31 09:02:23,347 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:23,458 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:02:23,462 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:23,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3692 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 2700 trivial. 0 not checked. [2018-01-31 09:02:23,887 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:23,887 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-01-31 09:02:23,888 INFO L409 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-01-31 09:02:23,888 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-01-31 09:02:23,888 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2018-01-31 09:02:23,888 INFO L87 Difference]: Start difference. First operand 379 states and 394 transitions. Second operand 35 states. [2018-01-31 09:02:24,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:24,260 INFO L93 Difference]: Finished difference Result 630 states and 660 transitions. [2018-01-31 09:02:24,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-01-31 09:02:24,273 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 469 [2018-01-31 09:02:24,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:24,274 INFO L225 Difference]: With dead ends: 630 [2018-01-31 09:02:24,274 INFO L226 Difference]: Without dead ends: 392 [2018-01-31 09:02:24,275 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1443, Invalid=2979, Unknown=0, NotChecked=0, Total=4422 [2018-01-31 09:02:24,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2018-01-31 09:02:24,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 387. [2018-01-31 09:02:24,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-01-31 09:02:24,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 402 transitions. [2018-01-31 09:02:24,280 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 402 transitions. Word has length 469 [2018-01-31 09:02:24,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:24,280 INFO L432 AbstractCegarLoop]: Abstraction has 387 states and 402 transitions. [2018-01-31 09:02:24,280 INFO L433 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-01-31 09:02:24,280 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 402 transitions. [2018-01-31 09:02:24,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2018-01-31 09:02:24,281 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:24,282 INFO L351 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 18, 17, 17, 17, 17, 17, 17, 17, 15, 12, 12, 12, 12, 12, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:24,282 INFO L371 AbstractCegarLoop]: === Iteration 33 === [mainErr0AssertViolation]=== [2018-01-31 09:02:24,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1008860556, now seen corresponding path program 23 times [2018-01-31 09:02:24,282 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:24,282 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:24,282 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:24,283 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:02:24,283 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:24,290 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:24,290 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:24,290 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:24,304 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:02:24,315 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:24,316 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:24,317 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:24,319 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:24,320 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:24,322 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:24,324 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:24,328 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:24,339 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:24,344 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:24,352 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:24,360 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:24,389 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:24,412 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:24,521 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:24,839 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:24,840 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:02:24,844 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:24,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3822 backedges. 756 proven. 75 refuted. 0 times theorem prover too weak. 2991 trivial. 0 not checked. [2018-01-31 09:02:25,016 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:25,016 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-01-31 09:02:25,017 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-31 09:02:25,017 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-31 09:02:25,017 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-31 09:02:25,017 INFO L87 Difference]: Start difference. First operand 387 states and 402 transitions. Second operand 13 states. [2018-01-31 09:02:25,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:25,108 INFO L93 Difference]: Finished difference Result 626 states and 663 transitions. [2018-01-31 09:02:25,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-31 09:02:25,108 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 477 [2018-01-31 09:02:25,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:25,109 INFO L225 Difference]: With dead ends: 626 [2018-01-31 09:02:25,109 INFO L226 Difference]: Without dead ends: 395 [2018-01-31 09:02:25,110 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2018-01-31 09:02:25,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-01-31 09:02:25,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 393. [2018-01-31 09:02:25,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2018-01-31 09:02:25,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 408 transitions. [2018-01-31 09:02:25,118 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 408 transitions. Word has length 477 [2018-01-31 09:02:25,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:25,118 INFO L432 AbstractCegarLoop]: Abstraction has 393 states and 408 transitions. [2018-01-31 09:02:25,118 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-31 09:02:25,118 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 408 transitions. [2018-01-31 09:02:25,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2018-01-31 09:02:25,120 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:25,120 INFO L351 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 18, 18, 17, 17, 17, 17, 17, 17, 17, 12, 12, 12, 12, 12, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:25,120 INFO L371 AbstractCegarLoop]: === Iteration 34 === [mainErr0AssertViolation]=== [2018-01-31 09:02:25,120 INFO L82 PathProgramCache]: Analyzing trace with hash 479466764, now seen corresponding path program 24 times [2018-01-31 09:02:25,120 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:25,120 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:25,121 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:25,121 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:02:25,121 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:25,133 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:25,133 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:25,133 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 (exit command is (exit), workingDir is null) [2018-01-31 09:02:25,147 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:25,161 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:25,164 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:25,168 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:25,171 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:25,178 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:25,196 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:25,228 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:25,615 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:25,693 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:25,829 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:25,926 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:27,075 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:27,191 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:02:27,193 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:02:27,197 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:27,302 INFO L134 CoverageAnalysis]: Checked inductivity of 4344 backedges. 895 proven. 80 refuted. 0 times theorem prover too weak. 3369 trivial. 0 not checked. [2018-01-31 09:02:27,319 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:27,319 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-01-31 09:02:27,320 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-31 09:02:27,320 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-31 09:02:27,320 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-31 09:02:27,320 INFO L87 Difference]: Start difference. First operand 393 states and 408 transitions. Second operand 13 states. [2018-01-31 09:02:27,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:27,420 INFO L93 Difference]: Finished difference Result 647 states and 686 transitions. [2018-01-31 09:02:27,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-31 09:02:27,420 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 495 [2018-01-31 09:02:27,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:27,421 INFO L225 Difference]: With dead ends: 647 [2018-01-31 09:02:27,421 INFO L226 Difference]: Without dead ends: 410 [2018-01-31 09:02:27,421 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2018-01-31 09:02:27,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2018-01-31 09:02:27,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 403. [2018-01-31 09:02:27,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-01-31 09:02:27,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 419 transitions. [2018-01-31 09:02:27,425 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 419 transitions. Word has length 495 [2018-01-31 09:02:27,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:27,426 INFO L432 AbstractCegarLoop]: Abstraction has 403 states and 419 transitions. [2018-01-31 09:02:27,426 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-31 09:02:27,426 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 419 transitions. [2018-01-31 09:02:27,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2018-01-31 09:02:27,427 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:27,428 INFO L351 BasicCegarLoop]: trace histogram [36, 33, 33, 33, 33, 18, 18, 17, 17, 17, 17, 17, 17, 17, 15, 15, 15, 15, 15, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:27,428 INFO L371 AbstractCegarLoop]: === Iteration 35 === [mainErr0AssertViolation]=== [2018-01-31 09:02:27,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1146272544, now seen corresponding path program 25 times [2018-01-31 09:02:27,428 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:27,428 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:27,428 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:27,428 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:02:27,428 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:27,437 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:27,437 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:27,437 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:27,448 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:02:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:02:27,498 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:27,982 INFO L134 CoverageAnalysis]: Checked inductivity of 5076 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 3954 trivial. 0 not checked. [2018-01-31 09:02:27,998 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:27,999 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-01-31 09:02:27,999 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-31 09:02:27,999 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-31 09:02:27,999 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 09:02:27,999 INFO L87 Difference]: Start difference. First operand 403 states and 419 transitions. Second operand 37 states. [2018-01-31 09:02:28,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:28,504 INFO L93 Difference]: Finished difference Result 670 states and 702 transitions. [2018-01-31 09:02:28,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-01-31 09:02:28,504 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 525 [2018-01-31 09:02:28,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:28,505 INFO L225 Difference]: With dead ends: 670 [2018-01-31 09:02:28,505 INFO L226 Difference]: Without dead ends: 416 [2018-01-31 09:02:28,506 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1618, Invalid=3352, Unknown=0, NotChecked=0, Total=4970 [2018-01-31 09:02:28,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2018-01-31 09:02:28,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 411. [2018-01-31 09:02:28,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-01-31 09:02:28,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 427 transitions. [2018-01-31 09:02:28,526 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 427 transitions. Word has length 525 [2018-01-31 09:02:28,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:28,527 INFO L432 AbstractCegarLoop]: Abstraction has 411 states and 427 transitions. [2018-01-31 09:02:28,527 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-31 09:02:28,527 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 427 transitions. [2018-01-31 09:02:28,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2018-01-31 09:02:28,529 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:28,530 INFO L351 BasicCegarLoop]: trace histogram [36, 33, 33, 33, 33, 19, 18, 18, 18, 18, 18, 18, 18, 18, 15, 15, 15, 15, 15, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:28,530 INFO L371 AbstractCegarLoop]: === Iteration 36 === [mainErr0AssertViolation]=== [2018-01-31 09:02:28,530 INFO L82 PathProgramCache]: Analyzing trace with hash 231139209, now seen corresponding path program 26 times [2018-01-31 09:02:28,530 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:28,530 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:28,530 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:28,530 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:02:28,530 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:28,543 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:28,543 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:28,543 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 (exit command is (exit), workingDir is null) [2018-01-31 09:02:28,547 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:28,562 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:28,594 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:02:28,600 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:02:28,603 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:28,968 INFO L134 CoverageAnalysis]: Checked inductivity of 5214 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 3954 trivial. 0 not checked. [2018-01-31 09:02:28,985 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:28,985 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-01-31 09:02:28,985 INFO L409 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-01-31 09:02:28,985 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-01-31 09:02:28,986 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2018-01-31 09:02:28,986 INFO L87 Difference]: Start difference. First operand 411 states and 427 transitions. Second operand 39 states. [2018-01-31 09:02:29,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:29,441 INFO L93 Difference]: Finished difference Result 678 states and 710 transitions. [2018-01-31 09:02:29,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-01-31 09:02:29,441 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 533 [2018-01-31 09:02:29,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:29,442 INFO L225 Difference]: With dead ends: 678 [2018-01-31 09:02:29,442 INFO L226 Difference]: Without dead ends: 424 [2018-01-31 09:02:29,443 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1803, Invalid=3747, Unknown=0, NotChecked=0, Total=5550 [2018-01-31 09:02:29,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2018-01-31 09:02:29,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 419. [2018-01-31 09:02:29,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-01-31 09:02:29,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 435 transitions. [2018-01-31 09:02:29,448 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 435 transitions. Word has length 533 [2018-01-31 09:02:29,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:29,448 INFO L432 AbstractCegarLoop]: Abstraction has 419 states and 435 transitions. [2018-01-31 09:02:29,448 INFO L433 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-01-31 09:02:29,448 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 435 transitions. [2018-01-31 09:02:29,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2018-01-31 09:02:29,451 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:29,451 INFO L351 BasicCegarLoop]: trace histogram [36, 33, 33, 33, 33, 20, 19, 19, 19, 19, 19, 19, 19, 18, 15, 15, 15, 15, 15, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:29,451 INFO L371 AbstractCegarLoop]: === Iteration 37 === [mainErr0AssertViolation]=== [2018-01-31 09:02:29,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1716244786, now seen corresponding path program 27 times [2018-01-31 09:02:29,451 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:29,451 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:29,452 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:29,452 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:02:29,452 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:29,461 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:02:29,461 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:02:29,461 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:02:29,487 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:02:29,504 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:02:29,508 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:02:29,515 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:02:29,527 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:02:29,543 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:03:20,090 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:03:20,243 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:03:20,769 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:03:20,771 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:03:20,774 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:03:20,936 INFO L134 CoverageAnalysis]: Checked inductivity of 5360 backedges. 1764 proven. 132 refuted. 0 times theorem prover too weak. 3464 trivial. 0 not checked. [2018-01-31 09:03:20,955 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:03:20,955 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-01-31 09:03:20,956 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-31 09:03:20,956 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-31 09:03:20,956 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-31 09:03:20,956 INFO L87 Difference]: Start difference. First operand 419 states and 435 transitions. Second operand 15 states. [2018-01-31 09:03:21,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:03:21,067 INFO L93 Difference]: Finished difference Result 556 states and 581 transitions. [2018-01-31 09:03:21,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-31 09:03:21,069 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 541 [2018-01-31 09:03:21,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:03:21,070 INFO L225 Difference]: With dead ends: 556 [2018-01-31 09:03:21,070 INFO L226 Difference]: Without dead ends: 445 [2018-01-31 09:03:21,071 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=243, Invalid=459, Unknown=0, NotChecked=0, Total=702 [2018-01-31 09:03:21,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2018-01-31 09:03:21,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 435. [2018-01-31 09:03:21,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2018-01-31 09:03:21,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 451 transitions. [2018-01-31 09:03:21,076 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 451 transitions. Word has length 541 [2018-01-31 09:03:21,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:03:21,077 INFO L432 AbstractCegarLoop]: Abstraction has 435 states and 451 transitions. [2018-01-31 09:03:21,077 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-31 09:03:21,077 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 451 transitions. [2018-01-31 09:03:21,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2018-01-31 09:03:21,079 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:03:21,079 INFO L351 BasicCegarLoop]: trace histogram [36, 33, 33, 33, 33, 20, 19, 19, 19, 19, 19, 19, 19, 18, 15, 15, 15, 15, 15, 8, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:03:21,079 INFO L371 AbstractCegarLoop]: === Iteration 38 === [mainErr0AssertViolation]=== [2018-01-31 09:03:21,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1849444055, now seen corresponding path program 28 times [2018-01-31 09:03:21,079 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:03:21,079 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:03:21,080 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:03:21,080 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:03:21,080 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:03:21,090 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:03:21,090 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:03:21,090 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:03:21,119 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:03:21,665 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:03:21,670 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:03:22,052 INFO L134 CoverageAnalysis]: Checked inductivity of 5410 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 4004 trivial. 0 not checked. [2018-01-31 09:03:22,072 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:03:22,072 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-01-31 09:03:22,073 INFO L409 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-01-31 09:03:22,073 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-01-31 09:03:22,073 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2018-01-31 09:03:22,073 INFO L87 Difference]: Start difference. First operand 435 states and 451 transitions. Second operand 41 states. [2018-01-31 09:03:22,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:03:22,605 INFO L93 Difference]: Finished difference Result 718 states and 750 transitions. [2018-01-31 09:03:22,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-01-31 09:03:22,605 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 549 [2018-01-31 09:03:22,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:03:22,606 INFO L225 Difference]: With dead ends: 718 [2018-01-31 09:03:22,607 INFO L226 Difference]: Without dead ends: 448 [2018-01-31 09:03:22,608 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 509 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1045 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1998, Invalid=4164, Unknown=0, NotChecked=0, Total=6162 [2018-01-31 09:03:22,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2018-01-31 09:03:22,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 443. [2018-01-31 09:03:22,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2018-01-31 09:03:22,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 459 transitions. [2018-01-31 09:03:22,612 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 459 transitions. Word has length 549 [2018-01-31 09:03:22,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:03:22,613 INFO L432 AbstractCegarLoop]: Abstraction has 443 states and 459 transitions. [2018-01-31 09:03:22,613 INFO L433 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-01-31 09:03:22,613 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 459 transitions. [2018-01-31 09:03:22,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2018-01-31 09:03:22,615 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:03:22,615 INFO L351 BasicCegarLoop]: trace histogram [36, 33, 33, 33, 33, 21, 20, 20, 20, 20, 20, 20, 20, 18, 15, 15, 15, 15, 15, 8, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:03:22,615 INFO L371 AbstractCegarLoop]: === Iteration 39 === [mainErr0AssertViolation]=== [2018-01-31 09:03:22,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1031418066, now seen corresponding path program 29 times [2018-01-31 09:03:22,616 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:03:22,616 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:03:22,616 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:03:22,616 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:03:22,616 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:03:22,625 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:03:22,625 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:03:22,625 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:03:22,657 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:03:22,670 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:03:22,671 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:03:22,672 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:03:22,673 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:03:22,675 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:03:22,677 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:03:22,679 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:03:22,682 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:03:22,686 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:03:22,690 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:03:22,697 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:03:22,707 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:03:22,715 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:03:22,726 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:03:22,844 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:03:22,997 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:03:23,197 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:03:23,472 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:03:24,129 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:03:24,131 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:03:24,135 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:03:24,267 INFO L134 CoverageAnalysis]: Checked inductivity of 5564 backedges. 1086 proven. 108 refuted. 0 times theorem prover too weak. 4370 trivial. 0 not checked. [2018-01-31 09:03:24,285 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:03:24,285 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-01-31 09:03:24,286 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-31 09:03:24,286 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-31 09:03:24,286 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-31 09:03:24,286 INFO L87 Difference]: Start difference. First operand 443 states and 459 transitions. Second operand 15 states. [2018-01-31 09:03:24,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:03:24,370 INFO L93 Difference]: Finished difference Result 714 states and 753 transitions. [2018-01-31 09:03:24,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-31 09:03:24,370 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 557 [2018-01-31 09:03:24,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:03:24,371 INFO L225 Difference]: With dead ends: 714 [2018-01-31 09:03:24,371 INFO L226 Difference]: Without dead ends: 451 [2018-01-31 09:03:24,372 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=243, Invalid=459, Unknown=0, NotChecked=0, Total=702 [2018-01-31 09:03:24,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2018-01-31 09:03:24,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 449. [2018-01-31 09:03:24,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2018-01-31 09:03:24,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 465 transitions. [2018-01-31 09:03:24,375 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 465 transitions. Word has length 557 [2018-01-31 09:03:24,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:03:24,376 INFO L432 AbstractCegarLoop]: Abstraction has 449 states and 465 transitions. [2018-01-31 09:03:24,376 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-31 09:03:24,376 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 465 transitions. [2018-01-31 09:03:24,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2018-01-31 09:03:24,378 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:03:24,378 INFO L351 BasicCegarLoop]: trace histogram [39, 36, 36, 36, 36, 21, 21, 20, 20, 20, 20, 20, 20, 20, 15, 15, 15, 15, 15, 8, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:03:24,378 INFO L371 AbstractCegarLoop]: === Iteration 40 === [mainErr0AssertViolation]=== [2018-01-31 09:03:24,378 INFO L82 PathProgramCache]: Analyzing trace with hash -360012694, now seen corresponding path program 30 times [2018-01-31 09:03:24,378 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:03:24,378 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:03:24,379 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:03:24,379 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:03:24,379 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:03:24,387 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:03:24,388 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:03:24,388 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:03:24,407 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:03:24,422 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:03:24,424 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:03:24,455 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:03:24,509 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:03:24,617 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:03:24,814 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:03:24,845 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:03:47,159 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:03:47,282 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:03:47,366 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:03:47,481 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:03:48,435 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:03:48,868 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:03:49,599 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:03:50,429 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:03:50,432 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:03:50,439 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:03:50,566 INFO L134 CoverageAnalysis]: Checked inductivity of 6194 backedges. 1299 proven. 125 refuted. 0 times theorem prover too weak. 4770 trivial. 0 not checked. [2018-01-31 09:03:50,585 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:03:50,585 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-01-31 09:03:50,585 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-31 09:03:50,585 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-31 09:03:50,585 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-31 09:03:50,585 INFO L87 Difference]: Start difference. First operand 449 states and 465 transitions. Second operand 15 states. [2018-01-31 09:03:50,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:03:50,717 INFO L93 Difference]: Finished difference Result 735 states and 776 transitions. [2018-01-31 09:03:50,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-31 09:03:50,717 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 575 [2018-01-31 09:03:50,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:03:50,718 INFO L225 Difference]: With dead ends: 735 [2018-01-31 09:03:50,718 INFO L226 Difference]: Without dead ends: 466 [2018-01-31 09:03:50,718 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 561 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=243, Invalid=459, Unknown=0, NotChecked=0, Total=702 [2018-01-31 09:03:50,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2018-01-31 09:03:50,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 459. [2018-01-31 09:03:50,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2018-01-31 09:03:50,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 476 transitions. [2018-01-31 09:03:50,723 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 476 transitions. Word has length 575 [2018-01-31 09:03:50,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:03:50,723 INFO L432 AbstractCegarLoop]: Abstraction has 459 states and 476 transitions. [2018-01-31 09:03:50,723 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-31 09:03:50,723 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 476 transitions. [2018-01-31 09:03:50,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2018-01-31 09:03:50,726 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:03:50,726 INFO L351 BasicCegarLoop]: trace histogram [42, 39, 39, 39, 39, 21, 21, 20, 20, 20, 20, 20, 20, 20, 18, 18, 18, 18, 18, 8, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:03:50,726 INFO L371 AbstractCegarLoop]: === Iteration 41 === [mainErr0AssertViolation]=== [2018-01-31 09:03:50,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1323553730, now seen corresponding path program 31 times [2018-01-31 09:03:50,726 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:03:50,726 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:03:50,727 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:03:50,727 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:03:50,727 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:03:50,736 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:03:50,736 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:03:50,736 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:03:50,750 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:03:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:03:50,806 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:03:51,246 INFO L134 CoverageAnalysis]: Checked inductivity of 7070 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 5510 trivial. 0 not checked. [2018-01-31 09:03:51,264 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:03:51,264 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-01-31 09:03:51,265 INFO L409 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-01-31 09:03:51,265 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-01-31 09:03:51,265 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2018-01-31 09:03:51,265 INFO L87 Difference]: Start difference. First operand 459 states and 476 transitions. Second operand 43 states. [2018-01-31 09:03:51,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:03:51,805 INFO L93 Difference]: Finished difference Result 758 states and 792 transitions. [2018-01-31 09:03:51,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-01-31 09:03:51,805 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 605 [2018-01-31 09:03:51,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:03:51,806 INFO L225 Difference]: With dead ends: 758 [2018-01-31 09:03:51,807 INFO L226 Difference]: Without dead ends: 472 [2018-01-31 09:03:51,807 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 563 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2203, Invalid=4603, Unknown=0, NotChecked=0, Total=6806 [2018-01-31 09:03:51,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2018-01-31 09:03:51,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 467. [2018-01-31 09:03:51,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2018-01-31 09:03:51,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 484 transitions. [2018-01-31 09:03:51,811 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 484 transitions. Word has length 605 [2018-01-31 09:03:51,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:03:51,812 INFO L432 AbstractCegarLoop]: Abstraction has 467 states and 484 transitions. [2018-01-31 09:03:51,812 INFO L433 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-01-31 09:03:51,812 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 484 transitions. [2018-01-31 09:03:51,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2018-01-31 09:03:51,814 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:03:51,815 INFO L351 BasicCegarLoop]: trace histogram [42, 39, 39, 39, 39, 22, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 18, 18, 8, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:03:51,815 INFO L371 AbstractCegarLoop]: === Iteration 42 === [mainErr0AssertViolation]=== [2018-01-31 09:03:51,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1639683303, now seen corresponding path program 32 times [2018-01-31 09:03:51,815 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:03:51,815 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:03:51,815 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:03:51,815 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:03:51,816 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:03:51,825 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:03:51,825 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:03:51,826 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:03:51,845 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:03:51,860 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:03:51,894 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:03:51,901 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:03:51,904 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:03:52,380 INFO L134 CoverageAnalysis]: Checked inductivity of 7232 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 5510 trivial. 0 not checked. [2018-01-31 09:03:52,397 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:03:52,397 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-01-31 09:03:52,397 INFO L409 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-01-31 09:03:52,397 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-01-31 09:03:52,398 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2018-01-31 09:03:52,398 INFO L87 Difference]: Start difference. First operand 467 states and 484 transitions. Second operand 45 states. [2018-01-31 09:03:52,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:03:52,988 INFO L93 Difference]: Finished difference Result 766 states and 800 transitions. [2018-01-31 09:03:52,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-01-31 09:03:52,988 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 613 [2018-01-31 09:03:52,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:03:52,989 INFO L225 Difference]: With dead ends: 766 [2018-01-31 09:03:52,989 INFO L226 Difference]: Without dead ends: 480 [2018-01-31 09:03:52,990 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 569 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1281 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2418, Invalid=5064, Unknown=0, NotChecked=0, Total=7482 [2018-01-31 09:03:52,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2018-01-31 09:03:52,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 475. [2018-01-31 09:03:52,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2018-01-31 09:03:52,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 492 transitions. [2018-01-31 09:03:52,994 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 492 transitions. Word has length 613 [2018-01-31 09:03:52,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:03:52,994 INFO L432 AbstractCegarLoop]: Abstraction has 475 states and 492 transitions. [2018-01-31 09:03:52,994 INFO L433 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-01-31 09:03:52,994 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 492 transitions. [2018-01-31 09:03:52,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2018-01-31 09:03:52,997 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:03:52,997 INFO L351 BasicCegarLoop]: trace histogram [42, 39, 39, 39, 39, 23, 22, 22, 22, 22, 22, 22, 22, 21, 18, 18, 18, 18, 18, 8, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:03:52,997 INFO L371 AbstractCegarLoop]: === Iteration 43 === [mainErr0AssertViolation]=== [2018-01-31 09:03:52,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1314896752, now seen corresponding path program 33 times [2018-01-31 09:03:52,998 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:03:52,998 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:03:52,998 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:03:52,998 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:03:52,998 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:03:53,009 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:03:53,009 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:03:53,009 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:03:53,024 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:03:53,039 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:03:53,043 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:03:53,050 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:03:53,070 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:03:53,110 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:03:53,437 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:03:56,918 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:03:58,807 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:04:23,918 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:04:23,920 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:04:23,925 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:04:24,180 INFO L134 CoverageAnalysis]: Checked inductivity of 7402 backedges. 2444 proven. 182 refuted. 0 times theorem prover too weak. 4776 trivial. 0 not checked. [2018-01-31 09:04:24,198 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:04:24,198 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-01-31 09:04:24,198 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-31 09:04:24,199 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-31 09:04:24,199 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-01-31 09:04:24,199 INFO L87 Difference]: Start difference. First operand 475 states and 492 transitions. Second operand 17 states. [2018-01-31 09:04:24,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:04:24,314 INFO L93 Difference]: Finished difference Result 628 states and 655 transitions. [2018-01-31 09:04:24,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-31 09:04:24,314 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 621 [2018-01-31 09:04:24,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:04:24,315 INFO L225 Difference]: With dead ends: 628 [2018-01-31 09:04:24,316 INFO L226 Difference]: Without dead ends: 501 [2018-01-31 09:04:24,316 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 605 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=318, Invalid=612, Unknown=0, NotChecked=0, Total=930 [2018-01-31 09:04:24,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2018-01-31 09:04:24,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 491. [2018-01-31 09:04:24,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2018-01-31 09:04:24,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 508 transitions. [2018-01-31 09:04:24,327 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 508 transitions. Word has length 621 [2018-01-31 09:04:24,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:04:24,327 INFO L432 AbstractCegarLoop]: Abstraction has 491 states and 508 transitions. [2018-01-31 09:04:24,327 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-31 09:04:24,327 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 508 transitions. [2018-01-31 09:04:24,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2018-01-31 09:04:24,330 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:04:24,330 INFO L351 BasicCegarLoop]: trace histogram [42, 39, 39, 39, 39, 23, 22, 22, 22, 22, 22, 22, 22, 21, 18, 18, 18, 18, 18, 9, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:04:24,330 INFO L371 AbstractCegarLoop]: === Iteration 44 === [mainErr0AssertViolation]=== [2018-01-31 09:04:24,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1672295289, now seen corresponding path program 34 times [2018-01-31 09:04:24,330 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:04:24,330 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:04:24,331 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:24,331 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:04:24,331 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:24,343 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:04:24,344 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:04:24,344 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 (exit command is (exit), workingDir is null) [2018-01-31 09:04:24,348 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:04:24,692 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:04:24,697 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:04:25,164 INFO L134 CoverageAnalysis]: Checked inductivity of 7460 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 5568 trivial. 0 not checked. [2018-01-31 09:04:25,184 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:04:25,185 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-01-31 09:04:25,185 INFO L409 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-01-31 09:04:25,185 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-01-31 09:04:25,185 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2018-01-31 09:04:25,185 INFO L87 Difference]: Start difference. First operand 491 states and 508 transitions. Second operand 47 states. [2018-01-31 09:04:25,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:04:25,799 INFO L93 Difference]: Finished difference Result 806 states and 840 transitions. [2018-01-31 09:04:25,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-01-31 09:04:25,799 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 629 [2018-01-31 09:04:25,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:04:25,800 INFO L225 Difference]: With dead ends: 806 [2018-01-31 09:04:25,800 INFO L226 Difference]: Without dead ends: 504 [2018-01-31 09:04:25,801 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 583 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1408 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2643, Invalid=5547, Unknown=0, NotChecked=0, Total=8190 [2018-01-31 09:04:25,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2018-01-31 09:04:25,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 499. [2018-01-31 09:04:25,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2018-01-31 09:04:25,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 516 transitions. [2018-01-31 09:04:25,806 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 516 transitions. Word has length 629 [2018-01-31 09:04:25,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:04:25,806 INFO L432 AbstractCegarLoop]: Abstraction has 499 states and 516 transitions. [2018-01-31 09:04:25,806 INFO L433 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-01-31 09:04:25,806 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 516 transitions. [2018-01-31 09:04:25,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2018-01-31 09:04:25,809 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:04:25,810 INFO L351 BasicCegarLoop]: trace histogram [42, 39, 39, 39, 39, 24, 23, 23, 23, 23, 23, 23, 23, 21, 18, 18, 18, 18, 18, 9, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:04:25,810 INFO L371 AbstractCegarLoop]: === Iteration 45 === [mainErr0AssertViolation]=== [2018-01-31 09:04:25,810 INFO L82 PathProgramCache]: Analyzing trace with hash 52234800, now seen corresponding path program 35 times [2018-01-31 09:04:25,810 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:04:25,810 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:04:25,810 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:25,810 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:04:25,811 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:25,820 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:04:25,820 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:04:25,820 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:04:25,838 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:04:25,851 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:04:25,852 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:04:25,853 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:04:25,854 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:04:25,856 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:04:25,858 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:04:25,859 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:04:25,862 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:04:25,867 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:04:25,871 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:04:25,880 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:04:25,887 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:04:25,895 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:04:25,902 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:04:25,914 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:04:25,931 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:04:26,002 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:04:26,446 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:04:26,762 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:04:27,592 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:04:29,359 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:04:31,769 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:04:31,774 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:04:31,781 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:04:32,016 INFO L134 CoverageAnalysis]: Checked inductivity of 7638 backedges. 1476 proven. 147 refuted. 0 times theorem prover too weak. 6015 trivial. 0 not checked. [2018-01-31 09:04:32,038 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:04:32,039 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-01-31 09:04:32,039 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-31 09:04:32,039 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-31 09:04:32,039 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-01-31 09:04:32,039 INFO L87 Difference]: Start difference. First operand 499 states and 516 transitions. Second operand 17 states. [2018-01-31 09:04:32,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:04:32,212 INFO L93 Difference]: Finished difference Result 802 states and 843 transitions. [2018-01-31 09:04:32,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-31 09:04:32,213 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 637 [2018-01-31 09:04:32,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:04:32,214 INFO L225 Difference]: With dead ends: 802 [2018-01-31 09:04:32,214 INFO L226 Difference]: Without dead ends: 507 [2018-01-31 09:04:32,214 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 621 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=318, Invalid=612, Unknown=0, NotChecked=0, Total=930 [2018-01-31 09:04:32,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2018-01-31 09:04:32,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 505. [2018-01-31 09:04:32,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2018-01-31 09:04:32,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 522 transitions. [2018-01-31 09:04:32,218 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 522 transitions. Word has length 637 [2018-01-31 09:04:32,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:04:32,218 INFO L432 AbstractCegarLoop]: Abstraction has 505 states and 522 transitions. [2018-01-31 09:04:32,218 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-31 09:04:32,218 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 522 transitions. [2018-01-31 09:04:32,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2018-01-31 09:04:32,221 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:04:32,221 INFO L351 BasicCegarLoop]: trace histogram [45, 42, 42, 42, 42, 24, 24, 23, 23, 23, 23, 23, 23, 23, 18, 18, 18, 18, 18, 9, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:04:32,221 INFO L371 AbstractCegarLoop]: === Iteration 46 === [mainErr0AssertViolation]=== [2018-01-31 09:04:32,221 INFO L82 PathProgramCache]: Analyzing trace with hash 452337352, now seen corresponding path program 36 times [2018-01-31 09:04:32,221 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:04:32,221 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:04:32,222 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:32,222 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:04:32,222 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:32,234 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-31 09:04:32,234 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-31 09:04:32,234 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 (exit command is (exit), workingDir is null) [2018-01-31 09:04:32,260 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-31 09:04:32,276 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:04:32,279 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:04:32,283 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:04:32,287 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:04:32,296 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:04:32,486 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:04:32,525 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:04:32,667 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown