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/mempurity-32bit-Automizer_Camel+AI_EQ.epf -i ../../../trunk/examples/svcomp/reducercommutativity/rangesum40_false-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d63d1fb [2018-01-27 23:00:00,155 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-27 23:00:00,157 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-27 23:00:00,173 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-27 23:00:00,173 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-27 23:00:00,174 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-27 23:00:00,175 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-27 23:00:00,177 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-27 23:00:00,179 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-27 23:00:00,180 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-27 23:00:00,181 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-27 23:00:00,181 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-27 23:00:00,182 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-27 23:00:00,183 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-27 23:00:00,184 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-27 23:00:00,189 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-27 23:00:00,193 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-27 23:00:00,195 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-27 23:00:00,196 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-27 23:00:00,197 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-27 23:00:00,199 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-27 23:00:00,205 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-27 23:00:00,205 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-27 23:00:00,206 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Camel+AI_EQ.epf [2018-01-27 23:00:00,216 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-27 23:00:00,216 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-27 23:00:00,217 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-27 23:00:00,217 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-27 23:00:00,217 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-27 23:00:00,217 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-27 23:00:00,218 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-27 23:00:00,218 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-27 23:00:00,218 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-27 23:00:00,219 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-27 23:00:00,219 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-27 23:00:00,219 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-27 23:00:00,219 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-27 23:00:00,219 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-27 23:00:00,220 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-27 23:00:00,220 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-27 23:00:00,220 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-27 23:00:00,220 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-27 23:00:00,221 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-27 23:00:00,221 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-27 23:00:00,221 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-27 23:00:00,221 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-27 23:00:00,221 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-27 23:00:00,221 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-27 23:00:00,222 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-27 23:00:00,222 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-27 23:00:00,222 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-27 23:00:00,222 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-27 23:00:00,222 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-27 23:00:00,223 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-27 23:00:00,223 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-27 23:00:00,223 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-27 23:00:00,223 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-27 23:00:00,223 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-27 23:00:00,223 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-27 23:00:00,224 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-27 23:00:00,224 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-27 23:00:00,270 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-27 23:00:00,279 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-27 23:00:00,282 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-27 23:00:00,284 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-27 23:00:00,285 INFO L276 PluginConnector]: CDTParser initialized [2018-01-27 23:00:00,286 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum40_false-unreach-call.i [2018-01-27 23:00:00,411 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-27 23:00:00,420 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-27 23:00:00,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-27 23:00:00,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-27 23:00:00,431 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-27 23:00:00,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:00:00" (1/1) ... [2018-01-27 23:00:00,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425ca3c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:00:00, skipping insertion in model container [2018-01-27 23:00:00,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:00:00" (1/1) ... [2018-01-27 23:00:00,455 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-27 23:00:00,476 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-27 23:00:00,650 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-27 23:00:00,679 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-27 23:00:00,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:00:00 WrapperNode [2018-01-27 23:00:00,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-27 23:00:00,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-27 23:00:00,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-27 23:00:00,695 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-27 23:00:00,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:00:00" (1/1) ... [2018-01-27 23:00:00,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:00:00" (1/1) ... [2018-01-27 23:00:00,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:00:00" (1/1) ... [2018-01-27 23:00:00,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:00:00" (1/1) ... [2018-01-27 23:00:00,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:00:00" (1/1) ... [2018-01-27 23:00:00,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:00:00" (1/1) ... [2018-01-27 23:00:00,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:00:00" (1/1) ... [2018-01-27 23:00:00,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-27 23:00:00,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-27 23:00:00,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-27 23:00:00,748 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-27 23:00:00,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:00:00" (1/1) ... No working directory specified, using /storage/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 [2018-01-27 23:00:00,810 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-27 23:00:00,810 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-27 23:00:00,810 INFO L136 BoogieDeclarations]: Found implementation of procedure init_nondet [2018-01-27 23:00:00,810 INFO L136 BoogieDeclarations]: Found implementation of procedure rangesum [2018-01-27 23:00:00,811 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-27 23:00:00,811 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-27 23:00:00,814 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-27 23:00:00,814 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-27 23:00:00,814 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-27 23:00:00,814 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-27 23:00:00,814 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-27 23:00:00,814 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-27 23:00:00,815 INFO L128 BoogieDeclarations]: Found specification of procedure init_nondet [2018-01-27 23:00:00,815 INFO L128 BoogieDeclarations]: Found specification of procedure rangesum [2018-01-27 23:00:00,815 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-27 23:00:00,815 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-27 23:00:00,815 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-27 23:00:01,289 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-27 23:00:01,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:00:01 BoogieIcfgContainer [2018-01-27 23:00:01,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-27 23:00:01,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-27 23:00:01,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-27 23:00:01,294 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-27 23:00:01,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 11:00:00" (1/3) ... [2018-01-27 23:00:01,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c40efea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:00:01, skipping insertion in model container [2018-01-27 23:00:01,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:00:00" (2/3) ... [2018-01-27 23:00:01,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c40efea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:00:01, skipping insertion in model container [2018-01-27 23:00:01,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:00:01" (3/3) ... [2018-01-27 23:00:01,297 INFO L105 eAbstractionObserver]: Analyzing ICFG rangesum40_false-unreach-call.i [2018-01-27 23:00:01,306 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-27 23:00:01,314 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-01-27 23:00:01,365 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-27 23:00:01,365 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-27 23:00:01,365 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-27 23:00:01,365 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-27 23:00:01,365 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-27 23:00:01,366 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-27 23:00:01,366 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-27 23:00:01,366 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-27 23:00:01,367 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-27 23:00:01,387 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2018-01-27 23:00:01,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-27 23:00:01,396 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:01,397 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-27 23:00:01,398 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-27 23:00:01,404 INFO L82 PathProgramCache]: Analyzing trace with hash 125893, now seen corresponding path program 1 times [2018-01-27 23:00:01,406 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:01,406 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:01,460 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:01,461 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:01,461 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-27 23:00:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-27 23:00:01,517 INFO L389 BasicCegarLoop]: Counterexample might be feasible [2018-01-27 23:00:01,523 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-27 23:00:01,531 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-27 23:00:01,531 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-27 23:00:01,531 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-27 23:00:01,531 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-27 23:00:01,532 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-27 23:00:01,532 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-27 23:00:01,532 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-27 23:00:01,532 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-27 23:00:01,532 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-27 23:00:01,534 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2018-01-27 23:00:01,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-01-27 23:00:01,537 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:01,537 INFO L330 BasicCegarLoop]: trace histogram [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] [2018-01-27 23:00:01,537 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:01,537 INFO L82 PathProgramCache]: Analyzing trace with hash 375279108, now seen corresponding path program 1 times [2018-01-27 23:00:01,537 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:01,537 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:01,538 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:01,538 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:01,538 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:00:01,565 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-27 23:00:01,598 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-27 23:00:01,598 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-27 23:00:01,598 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-27 23:00:01,605 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:00:01,690 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:01,728 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-01-27 23:00:01,761 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-27 23:00:01,761 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-27 23:00:01,763 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-27 23:00:01,778 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-27 23:00:01,778 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-27 23:00:01,783 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2018-01-27 23:00:01,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:01,816 INFO L93 Difference]: Finished difference Result 104 states and 127 transitions. [2018-01-27 23:00:01,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-27 23:00:01,910 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 50 [2018-01-27 23:00:01,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:01,920 INFO L225 Difference]: With dead ends: 104 [2018-01-27 23:00:01,921 INFO L226 Difference]: Without dead ends: 55 [2018-01-27 23:00:01,924 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-27 23:00:01,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-01-27 23:00:01,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-01-27 23:00:01,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-01-27 23:00:01,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2018-01-27 23:00:01,975 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 50 [2018-01-27 23:00:01,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:01,976 INFO L432 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2018-01-27 23:00:01,976 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-27 23:00:01,976 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2018-01-27 23:00:01,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-01-27 23:00:01,979 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:01,979 INFO L330 BasicCegarLoop]: trace histogram [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] [2018-01-27 23:00:01,979 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:01,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1865795361, now seen corresponding path program 1 times [2018-01-27 23:00:01,980 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:01,980 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:01,981 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:01,982 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:01,982 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:01,999 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:02,000 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:02,000 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 23:00:02,013 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:00:02,062 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:02,094 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-01-27 23:00:02,120 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-27 23:00:02,121 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-27 23:00:02,122 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-27 23:00:02,122 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-27 23:00:02,122 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-27 23:00:02,122 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 3 states. [2018-01-27 23:00:02,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:02,214 INFO L93 Difference]: Finished difference Result 102 states and 114 transitions. [2018-01-27 23:00:02,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-27 23:00:02,214 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2018-01-27 23:00:02,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:02,216 INFO L225 Difference]: With dead ends: 102 [2018-01-27 23:00:02,216 INFO L226 Difference]: Without dead ends: 60 [2018-01-27 23:00:02,217 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-27 23:00:02,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-01-27 23:00:02,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2018-01-27 23:00:02,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-01-27 23:00:02,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2018-01-27 23:00:02,226 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 55 [2018-01-27 23:00:02,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:02,226 INFO L432 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2018-01-27 23:00:02,226 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-27 23:00:02,226 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2018-01-27 23:00:02,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-01-27 23:00:02,228 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:02,228 INFO L330 BasicCegarLoop]: trace histogram [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] [2018-01-27 23:00:02,229 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:02,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1346148095, now seen corresponding path program 1 times [2018-01-27 23:00:02,229 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:02,229 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:02,232 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:02,232 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:02,233 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:00:02,287 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-27 23:00:02,391 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-27 23:00:02,391 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-27 23:00:02,392 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-27 23:00:02,403 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:00:02,469 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:02,498 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-01-27 23:00:02,523 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-27 23:00:02,523 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-27 23:00:02,524 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-27 23:00:02,524 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-27 23:00:02,524 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-27 23:00:02,525 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 3 states. [2018-01-27 23:00:02,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:02,543 INFO L93 Difference]: Finished difference Result 104 states and 122 transitions. [2018-01-27 23:00:02,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-27 23:00:02,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2018-01-27 23:00:02,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:02,548 INFO L225 Difference]: With dead ends: 104 [2018-01-27 23:00:02,548 INFO L226 Difference]: Without dead ends: 66 [2018-01-27 23:00:02,549 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-27 23:00:02,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-01-27 23:00:02,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2018-01-27 23:00:02,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-01-27 23:00:02,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2018-01-27 23:00:02,560 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 60 [2018-01-27 23:00:02,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:02,561 INFO L432 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2018-01-27 23:00:02,561 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-27 23:00:02,561 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2018-01-27 23:00:02,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-01-27 23:00:02,563 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:02,563 INFO L330 BasicCegarLoop]: trace histogram [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] [2018-01-27 23:00:02,563 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:02,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1114993982, now seen corresponding path program 1 times [2018-01-27 23:00:02,564 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:02,564 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:02,569 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:02,569 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:02,569 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:00:02,586 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-27 23:00:02,675 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-01-27 23:00:02,675 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-27 23:00:02,676 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-27 23:00:02,690 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:02,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:00:02,748 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:02,798 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-01-27 23:00:02,817 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:02,817 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-01-27 23:00:02,818 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-27 23:00:02,818 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-27 23:00:02,818 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-27 23:00:02,818 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand 4 states. [2018-01-27 23:00:02,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:02,894 INFO L93 Difference]: Finished difference Result 109 states and 128 transitions. [2018-01-27 23:00:02,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-27 23:00:02,894 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-01-27 23:00:02,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:02,896 INFO L225 Difference]: With dead ends: 109 [2018-01-27 23:00:02,896 INFO L226 Difference]: Without dead ends: 66 [2018-01-27 23:00:02,897 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-27 23:00:02,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-01-27 23:00:02,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2018-01-27 23:00:02,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-01-27 23:00:02,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2018-01-27 23:00:02,913 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 60 [2018-01-27 23:00:02,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:02,913 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2018-01-27 23:00:02,913 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-27 23:00:02,913 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2018-01-27 23:00:02,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-01-27 23:00:02,919 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:02,919 INFO L330 BasicCegarLoop]: trace histogram [6, 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] [2018-01-27 23:00:02,919 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:02,919 INFO L82 PathProgramCache]: Analyzing trace with hash -277594267, now seen corresponding path program 1 times [2018-01-27 23:00:02,919 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:02,919 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:02,920 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:02,921 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:02,921 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:00:02,945 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-27 23:00:03,043 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-01-27 23:00:03,043 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-27 23:00:03,043 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-27 23:00:03,049 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:00:03,100 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:03,154 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-01-27 23:00:03,175 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:03,175 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-01-27 23:00:03,176 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-27 23:00:03,176 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-27 23:00:03,176 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-27 23:00:03,177 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 5 states. [2018-01-27 23:00:03,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:03,401 INFO L93 Difference]: Finished difference Result 123 states and 143 transitions. [2018-01-27 23:00:03,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-27 23:00:03,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2018-01-27 23:00:03,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:03,407 INFO L225 Difference]: With dead ends: 123 [2018-01-27 23:00:03,407 INFO L226 Difference]: Without dead ends: 77 [2018-01-27 23:00:03,408 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-27 23:00:03,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-01-27 23:00:03,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 65. [2018-01-27 23:00:03,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-01-27 23:00:03,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2018-01-27 23:00:03,422 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 72 [2018-01-27 23:00:03,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:03,423 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2018-01-27 23:00:03,423 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-27 23:00:03,423 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2018-01-27 23:00:03,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-01-27 23:00:03,427 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:03,427 INFO L330 BasicCegarLoop]: trace histogram [9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-27 23:00:03,428 INFO L371 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:03,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1605849016, now seen corresponding path program 1 times [2018-01-27 23:00:03,428 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:03,428 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:03,429 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:03,429 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:03,429 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:03,441 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:03,442 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:03,442 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 23:00:03,456 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:00:03,529 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:03,651 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-01-27 23:00:03,674 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:03,674 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-01-27 23:00:03,674 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-27 23:00:03,675 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-27 23:00:03,675 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-27 23:00:03,675 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand 4 states. [2018-01-27 23:00:03,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:03,748 INFO L93 Difference]: Finished difference Result 123 states and 135 transitions. [2018-01-27 23:00:03,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-27 23:00:03,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2018-01-27 23:00:03,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:03,751 INFO L225 Difference]: With dead ends: 123 [2018-01-27 23:00:03,751 INFO L226 Difference]: Without dead ends: 73 [2018-01-27 23:00:03,752 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-27 23:00:03,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-01-27 23:00:03,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2018-01-27 23:00:03,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-01-27 23:00:03,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2018-01-27 23:00:03,760 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 96 [2018-01-27 23:00:03,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:03,760 INFO L432 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2018-01-27 23:00:03,760 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-27 23:00:03,760 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2018-01-27 23:00:03,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-01-27 23:00:03,763 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:03,763 INFO L330 BasicCegarLoop]: trace histogram [9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-27 23:00:03,763 INFO L371 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:03,764 INFO L82 PathProgramCache]: Analyzing trace with hash 489255322, now seen corresponding path program 2 times [2018-01-27 23:00:03,764 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:03,764 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:03,765 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:03,765 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:03,765 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:03,792 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:03,792 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:03,792 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 23:00:03,806 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:03,828 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:03,846 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:03,850 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:03,859 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:03,890 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-01-27 23:00:03,911 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:03,911 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-01-27 23:00:03,912 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-27 23:00:03,912 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-27 23:00:03,912 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-27 23:00:03,912 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 5 states. [2018-01-27 23:00:04,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:04,034 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2018-01-27 23:00:04,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-27 23:00:04,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2018-01-27 23:00:04,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:04,036 INFO L225 Difference]: With dead ends: 128 [2018-01-27 23:00:04,036 INFO L226 Difference]: Without dead ends: 78 [2018-01-27 23:00:04,037 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-27 23:00:04,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-01-27 23:00:04,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2018-01-27 23:00:04,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-01-27 23:00:04,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2018-01-27 23:00:04,051 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 101 [2018-01-27 23:00:04,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:04,051 INFO L432 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2018-01-27 23:00:04,051 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-27 23:00:04,051 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2018-01-27 23:00:04,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-01-27 23:00:04,053 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:04,059 INFO L330 BasicCegarLoop]: trace histogram [9, 6, 6, 4, 3, 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] [2018-01-27 23:00:04,059 INFO L371 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:04,059 INFO L82 PathProgramCache]: Analyzing trace with hash -930403080, now seen corresponding path program 3 times [2018-01-27 23:00:04,059 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:04,060 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:04,060 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:04,060 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:04,061 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:04,084 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:04,088 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:04,088 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 23:00:04,101 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:04,121 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:04,130 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:04,140 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:04,141 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:04,145 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:04,289 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-01-27 23:00:04,312 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:04,312 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-01-27 23:00:04,312 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-27 23:00:04,313 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-27 23:00:04,313 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-27 23:00:04,313 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand 4 states. [2018-01-27 23:00:04,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:04,378 INFO L93 Difference]: Finished difference Result 112 states and 121 transitions. [2018-01-27 23:00:04,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-27 23:00:04,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2018-01-27 23:00:04,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:04,380 INFO L225 Difference]: With dead ends: 112 [2018-01-27 23:00:04,380 INFO L226 Difference]: Without dead ends: 85 [2018-01-27 23:00:04,380 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-27 23:00:04,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-01-27 23:00:04,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2018-01-27 23:00:04,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-01-27 23:00:04,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2018-01-27 23:00:04,388 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 106 [2018-01-27 23:00:04,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:04,389 INFO L432 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2018-01-27 23:00:04,389 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-27 23:00:04,389 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2018-01-27 23:00:04,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-01-27 23:00:04,391 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:04,391 INFO L330 BasicCegarLoop]: trace histogram [9, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-27 23:00:04,391 INFO L371 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:04,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1827610016, now seen corresponding path program 4 times [2018-01-27 23:00:04,392 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:04,392 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:04,393 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:04,393 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:04,393 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:04,408 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:04,411 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:04,411 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-27 23:00:04,417 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-27 23:00:04,457 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:04,461 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:04,528 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2018-01-27 23:00:04,550 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:04,550 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-01-27 23:00:04,550 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-27 23:00:04,551 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-27 23:00:04,551 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-27 23:00:04,551 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 6 states. [2018-01-27 23:00:04,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:04,579 INFO L93 Difference]: Finished difference Result 145 states and 157 transitions. [2018-01-27 23:00:04,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-27 23:00:04,580 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-01-27 23:00:04,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:04,582 INFO L225 Difference]: With dead ends: 145 [2018-01-27 23:00:04,582 INFO L226 Difference]: Without dead ends: 89 [2018-01-27 23:00:04,582 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-27 23:00:04,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-01-27 23:00:04,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2018-01-27 23:00:04,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-01-27 23:00:04,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2018-01-27 23:00:04,591 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 112 [2018-01-27 23:00:04,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:04,591 INFO L432 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2018-01-27 23:00:04,591 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-27 23:00:04,592 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2018-01-27 23:00:04,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-01-27 23:00:04,593 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:04,593 INFO L330 BasicCegarLoop]: trace histogram [9, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-27 23:00:04,593 INFO L371 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:04,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1209466946, now seen corresponding path program 5 times [2018-01-27 23:00:04,594 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:04,594 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:04,595 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:04,595 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:04,595 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:04,607 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:04,607 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:04,608 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-27 23:00:04,621 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-27 23:00:04,638 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:04,643 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:04,644 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:04,648 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:04,682 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-01-27 23:00:04,702 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:04,702 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-01-27 23:00:04,702 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-27 23:00:04,703 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-27 23:00:04,703 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-27 23:00:04,703 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand 5 states. [2018-01-27 23:00:04,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:04,847 INFO L93 Difference]: Finished difference Result 148 states and 164 transitions. [2018-01-27 23:00:04,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-27 23:00:04,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2018-01-27 23:00:04,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:04,850 INFO L225 Difference]: With dead ends: 148 [2018-01-27 23:00:04,850 INFO L226 Difference]: Without dead ends: 96 [2018-01-27 23:00:04,851 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-27 23:00:04,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-01-27 23:00:04,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2018-01-27 23:00:04,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-01-27 23:00:04,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2018-01-27 23:00:04,859 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 117 [2018-01-27 23:00:04,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:04,859 INFO L432 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2018-01-27 23:00:04,860 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-27 23:00:04,860 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2018-01-27 23:00:04,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-01-27 23:00:04,861 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:04,862 INFO L330 BasicCegarLoop]: trace histogram [12, 9, 9, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2018-01-27 23:00:04,862 INFO L371 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:04,862 INFO L82 PathProgramCache]: Analyzing trace with hash 963031532, now seen corresponding path program 6 times [2018-01-27 23:00:04,862 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:04,862 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:04,863 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:04,863 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:04,863 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:04,877 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:04,877 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:04,877 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-27 23:00:04,888 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-27 23:00:04,908 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:04,911 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:04,918 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:04,923 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:04,946 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:04,956 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:05,213 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:05,215 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:05,220 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:05,280 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 108 proven. 12 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2018-01-27 23:00:05,300 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:05,300 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-01-27 23:00:05,300 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-27 23:00:05,300 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-27 23:00:05,300 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-27 23:00:05,301 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand 6 states. [2018-01-27 23:00:05,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:05,367 INFO L93 Difference]: Finished difference Result 160 states and 178 transitions. [2018-01-27 23:00:05,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-27 23:00:05,367 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-01-27 23:00:05,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:05,368 INFO L225 Difference]: With dead ends: 160 [2018-01-27 23:00:05,369 INFO L226 Difference]: Without dead ends: 102 [2018-01-27 23:00:05,369 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-27 23:00:05,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-01-27 23:00:05,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98. [2018-01-27 23:00:05,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-01-27 23:00:05,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2018-01-27 23:00:05,376 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 135 [2018-01-27 23:00:05,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:05,376 INFO L432 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2018-01-27 23:00:05,377 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-27 23:00:05,377 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2018-01-27 23:00:05,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-01-27 23:00:05,378 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:05,379 INFO L330 BasicCegarLoop]: trace histogram [15, 12, 12, 9, 9, 9, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2018-01-27 23:00:05,379 INFO L371 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:05,379 INFO L82 PathProgramCache]: Analyzing trace with hash 183275286, now seen corresponding path program 7 times [2018-01-27 23:00:05,379 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:05,379 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:05,380 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:05,380 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:05,380 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:05,395 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:05,395 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:05,395 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 23:00:05,412 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:00:05,466 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:05,497 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2018-01-27 23:00:05,517 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:05,517 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-01-27 23:00:05,518 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-27 23:00:05,518 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-27 23:00:05,518 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-27 23:00:05,518 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand 7 states. [2018-01-27 23:00:05,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:05,546 INFO L93 Difference]: Finished difference Result 174 states and 190 transitions. [2018-01-27 23:00:05,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-27 23:00:05,548 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2018-01-27 23:00:05,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:05,549 INFO L225 Difference]: With dead ends: 174 [2018-01-27 23:00:05,550 INFO L226 Difference]: Without dead ends: 106 [2018-01-27 23:00:05,550 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-27 23:00:05,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-01-27 23:00:05,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2018-01-27 23:00:05,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-01-27 23:00:05,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 111 transitions. [2018-01-27 23:00:05,558 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 111 transitions. Word has length 153 [2018-01-27 23:00:05,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:05,559 INFO L432 AbstractCegarLoop]: Abstraction has 103 states and 111 transitions. [2018-01-27 23:00:05,559 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-27 23:00:05,559 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 111 transitions. [2018-01-27 23:00:05,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-01-27 23:00:05,561 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:05,561 INFO L330 BasicCegarLoop]: trace histogram [15, 12, 12, 9, 9, 9, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 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] [2018-01-27 23:00:05,561 INFO L371 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:05,561 INFO L82 PathProgramCache]: Analyzing trace with hash 855897972, now seen corresponding path program 8 times [2018-01-27 23:00:05,561 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:05,562 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:05,562 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:05,562 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:05,563 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:05,579 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:05,579 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:05,579 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-27 23:00:05,590 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-27 23:00:05,606 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:05,633 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:05,638 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:05,642 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:05,768 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2018-01-27 23:00:05,791 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:05,791 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-01-27 23:00:05,791 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-27 23:00:05,792 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-27 23:00:05,792 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-01-27 23:00:05,792 INFO L87 Difference]: Start difference. First operand 103 states and 111 transitions. Second operand 8 states. [2018-01-27 23:00:05,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:05,854 INFO L93 Difference]: Finished difference Result 179 states and 195 transitions. [2018-01-27 23:00:05,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-27 23:00:05,854 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 158 [2018-01-27 23:00:05,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:05,855 INFO L225 Difference]: With dead ends: 179 [2018-01-27 23:00:05,855 INFO L226 Difference]: Without dead ends: 111 [2018-01-27 23:00:05,856 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-01-27 23:00:05,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-01-27 23:00:05,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 108. [2018-01-27 23:00:05,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-01-27 23:00:05,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 116 transitions. [2018-01-27 23:00:05,862 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 116 transitions. Word has length 158 [2018-01-27 23:00:05,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:05,863 INFO L432 AbstractCegarLoop]: Abstraction has 108 states and 116 transitions. [2018-01-27 23:00:05,863 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-27 23:00:05,863 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 116 transitions. [2018-01-27 23:00:05,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-01-27 23:00:05,865 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:05,866 INFO L330 BasicCegarLoop]: trace histogram [15, 12, 12, 9, 9, 9, 7, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 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] [2018-01-27 23:00:05,866 INFO L371 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:05,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1716184618, now seen corresponding path program 9 times [2018-01-27 23:00:05,866 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:05,866 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:05,867 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:05,867 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:05,867 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:05,885 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:05,885 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:05,886 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 23:00:05,899 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:05,933 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:05,939 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:05,950 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:05,960 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:05,961 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:05,964 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:06,173 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 208 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2018-01-27 23:00:06,193 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:06,193 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-01-27 23:00:06,193 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-27 23:00:06,193 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-27 23:00:06,193 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-27 23:00:06,194 INFO L87 Difference]: Start difference. First operand 108 states and 116 transitions. Second operand 5 states. [2018-01-27 23:00:06,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:06,221 INFO L93 Difference]: Finished difference Result 157 states and 170 transitions. [2018-01-27 23:00:06,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-27 23:00:06,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2018-01-27 23:00:06,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:06,222 INFO L225 Difference]: With dead ends: 157 [2018-01-27 23:00:06,222 INFO L226 Difference]: Without dead ends: 118 [2018-01-27 23:00:06,222 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-27 23:00:06,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-01-27 23:00:06,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2018-01-27 23:00:06,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-01-27 23:00:06,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 122 transitions. [2018-01-27 23:00:06,227 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 122 transitions. Word has length 163 [2018-01-27 23:00:06,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:06,228 INFO L432 AbstractCegarLoop]: Abstraction has 114 states and 122 transitions. [2018-01-27 23:00:06,228 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-27 23:00:06,228 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 122 transitions. [2018-01-27 23:00:06,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-01-27 23:00:06,229 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:06,229 INFO L330 BasicCegarLoop]: trace histogram [15, 12, 12, 9, 9, 9, 7, 6, 6, 6, 6, 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] [2018-01-27 23:00:06,229 INFO L371 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:06,230 INFO L82 PathProgramCache]: Analyzing trace with hash -98851394, now seen corresponding path program 10 times [2018-01-27 23:00:06,230 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:06,230 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:06,231 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:06,231 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:06,231 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:06,246 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:06,246 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:06,246 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:06,256 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-27 23:00:06,312 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:06,317 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:06,411 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2018-01-27 23:00:06,443 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:06,443 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-01-27 23:00:06,444 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-27 23:00:06,444 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-27 23:00:06,444 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-27 23:00:06,444 INFO L87 Difference]: Start difference. First operand 114 states and 122 transitions. Second operand 9 states. [2018-01-27 23:00:06,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:06,607 INFO L93 Difference]: Finished difference Result 196 states and 212 transitions. [2018-01-27 23:00:06,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-27 23:00:06,608 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 169 [2018-01-27 23:00:06,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:06,609 INFO L225 Difference]: With dead ends: 196 [2018-01-27 23:00:06,610 INFO L226 Difference]: Without dead ends: 122 [2018-01-27 23:00:06,610 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-27 23:00:06,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-01-27 23:00:06,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 119. [2018-01-27 23:00:06,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-01-27 23:00:06,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2018-01-27 23:00:06,616 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 169 [2018-01-27 23:00:06,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:06,616 INFO L432 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2018-01-27 23:00:06,616 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-27 23:00:06,616 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2018-01-27 23:00:06,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-01-27 23:00:06,618 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:06,618 INFO L330 BasicCegarLoop]: trace histogram [15, 12, 12, 9, 9, 9, 8, 7, 7, 7, 7, 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] [2018-01-27 23:00:06,618 INFO L371 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:06,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1262317028, now seen corresponding path program 11 times [2018-01-27 23:00:06,618 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:06,618 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:06,619 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:06,619 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:06,620 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:06,636 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:06,636 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:06,636 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 23:00:06,649 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:06,665 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:06,671 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:06,676 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:06,680 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:06,686 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:06,686 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:06,690 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:06,723 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 259 proven. 3 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2018-01-27 23:00:06,743 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:06,743 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-01-27 23:00:06,743 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-27 23:00:06,744 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-27 23:00:06,744 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-27 23:00:06,744 INFO L87 Difference]: Start difference. First operand 119 states and 127 transitions. Second operand 4 states. [2018-01-27 23:00:06,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:06,760 INFO L93 Difference]: Finished difference Result 194 states and 212 transitions. [2018-01-27 23:00:06,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-27 23:00:06,761 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2018-01-27 23:00:06,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:06,762 INFO L225 Difference]: With dead ends: 194 [2018-01-27 23:00:06,762 INFO L226 Difference]: Without dead ends: 124 [2018-01-27 23:00:06,763 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-27 23:00:06,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-01-27 23:00:06,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2018-01-27 23:00:06,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-01-27 23:00:06,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 131 transitions. [2018-01-27 23:00:06,769 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 131 transitions. Word has length 174 [2018-01-27 23:00:06,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:06,769 INFO L432 AbstractCegarLoop]: Abstraction has 123 states and 131 transitions. [2018-01-27 23:00:06,769 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-27 23:00:06,769 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 131 transitions. [2018-01-27 23:00:06,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-01-27 23:00:06,770 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:06,770 INFO L330 BasicCegarLoop]: trace histogram [18, 15, 15, 9, 9, 9, 8, 7, 7, 7, 7, 6, 4, 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] [2018-01-27 23:00:06,770 INFO L371 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:06,770 INFO L82 PathProgramCache]: Analyzing trace with hash -867161405, now seen corresponding path program 12 times [2018-01-27 23:00:06,771 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:06,771 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:06,772 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:06,772 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:06,772 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:06,792 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:06,792 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:06,792 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 23:00:06,803 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:06,844 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:06,848 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:06,857 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:06,865 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:06,891 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:06,912 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:06,958 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:06,975 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:06,976 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:06,981 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:07,261 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 308 proven. 27 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2018-01-27 23:00:07,283 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:07,283 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-01-27 23:00:07,283 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-27 23:00:07,283 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-27 23:00:07,284 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-27 23:00:07,284 INFO L87 Difference]: Start difference. First operand 123 states and 131 transitions. Second operand 7 states. [2018-01-27 23:00:07,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:07,705 INFO L93 Difference]: Finished difference Result 207 states and 227 transitions. [2018-01-27 23:00:07,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-27 23:00:07,723 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 186 [2018-01-27 23:00:07,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:07,724 INFO L225 Difference]: With dead ends: 207 [2018-01-27 23:00:07,724 INFO L226 Difference]: Without dead ends: 133 [2018-01-27 23:00:07,725 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-27 23:00:07,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-01-27 23:00:07,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2018-01-27 23:00:07,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-01-27 23:00:07,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 138 transitions. [2018-01-27 23:00:07,731 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 138 transitions. Word has length 186 [2018-01-27 23:00:07,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:07,732 INFO L432 AbstractCegarLoop]: Abstraction has 129 states and 138 transitions. [2018-01-27 23:00:07,732 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-27 23:00:07,732 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 138 transitions. [2018-01-27 23:00:07,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-01-27 23:00:07,733 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:07,733 INFO L330 BasicCegarLoop]: trace histogram [21, 18, 18, 12, 12, 12, 8, 7, 7, 7, 7, 6, 4, 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] [2018-01-27 23:00:07,733 INFO L371 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:07,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1590779629, now seen corresponding path program 13 times [2018-01-27 23:00:07,734 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:07,734 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:07,735 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:07,735 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:07,735 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:07,762 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:07,762 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:07,762 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-27 23:00:07,770 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:00:07,830 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:07,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 894 trivial. 0 not checked. [2018-01-27 23:00:07,926 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:07,926 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-01-27 23:00:07,926 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-27 23:00:07,926 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-27 23:00:07,926 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-01-27 23:00:07,927 INFO L87 Difference]: Start difference. First operand 129 states and 138 transitions. Second operand 10 states. [2018-01-27 23:00:08,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:08,163 INFO L93 Difference]: Finished difference Result 221 states and 239 transitions. [2018-01-27 23:00:08,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-27 23:00:08,164 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 204 [2018-01-27 23:00:08,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:08,165 INFO L225 Difference]: With dead ends: 221 [2018-01-27 23:00:08,165 INFO L226 Difference]: Without dead ends: 137 [2018-01-27 23:00:08,165 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-01-27 23:00:08,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-01-27 23:00:08,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 134. [2018-01-27 23:00:08,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-01-27 23:00:08,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 143 transitions. [2018-01-27 23:00:08,171 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 143 transitions. Word has length 204 [2018-01-27 23:00:08,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:08,171 INFO L432 AbstractCegarLoop]: Abstraction has 134 states and 143 transitions. [2018-01-27 23:00:08,171 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-27 23:00:08,172 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 143 transitions. [2018-01-27 23:00:08,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-01-27 23:00:08,173 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:08,173 INFO L330 BasicCegarLoop]: trace histogram [21, 18, 18, 12, 12, 12, 9, 8, 8, 8, 8, 6, 4, 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] [2018-01-27 23:00:08,173 INFO L371 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:08,173 INFO L82 PathProgramCache]: Analyzing trace with hash -375806513, now seen corresponding path program 14 times [2018-01-27 23:00:08,173 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:08,174 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:08,174 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:08,175 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:08,175 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:08,191 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:08,191 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:08,191 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-27 23:00:08,203 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-27 23:00:08,226 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:08,257 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:08,263 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:08,269 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:08,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1050 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 894 trivial. 0 not checked. [2018-01-27 23:00:08,760 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:08,760 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-01-27 23:00:08,761 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-27 23:00:08,761 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-27 23:00:08,761 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-01-27 23:00:08,761 INFO L87 Difference]: Start difference. First operand 134 states and 143 transitions. Second operand 11 states. [2018-01-27 23:00:08,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:08,837 INFO L93 Difference]: Finished difference Result 226 states and 244 transitions. [2018-01-27 23:00:08,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-27 23:00:08,838 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 209 [2018-01-27 23:00:08,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:08,839 INFO L225 Difference]: With dead ends: 226 [2018-01-27 23:00:08,839 INFO L226 Difference]: Without dead ends: 142 [2018-01-27 23:00:08,840 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-01-27 23:00:08,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-01-27 23:00:08,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 139. [2018-01-27 23:00:08,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-01-27 23:00:08,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 148 transitions. [2018-01-27 23:00:08,847 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 148 transitions. Word has length 209 [2018-01-27 23:00:08,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:08,847 INFO L432 AbstractCegarLoop]: Abstraction has 139 states and 148 transitions. [2018-01-27 23:00:08,847 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-27 23:00:08,847 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 148 transitions. [2018-01-27 23:00:08,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-01-27 23:00:08,849 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:08,849 INFO L330 BasicCegarLoop]: trace histogram [21, 18, 18, 12, 12, 12, 10, 9, 9, 9, 9, 6, 4, 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] [2018-01-27 23:00:08,849 INFO L371 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:08,849 INFO L82 PathProgramCache]: Analyzing trace with hash -793486291, now seen corresponding path program 15 times [2018-01-27 23:00:08,850 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:08,850 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:08,850 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:08,851 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:08,851 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:08,867 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:08,867 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:08,867 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 23:00:08,880 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:08,906 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:08,914 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:08,924 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:08,935 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:08,978 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:08,979 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:08,984 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:09,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 412 proven. 24 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2018-01-27 23:00:09,075 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:09,075 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-01-27 23:00:09,076 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-27 23:00:09,076 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-27 23:00:09,076 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-27 23:00:09,076 INFO L87 Difference]: Start difference. First operand 139 states and 148 transitions. Second operand 6 states. [2018-01-27 23:00:09,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:09,116 INFO L93 Difference]: Finished difference Result 198 states and 213 transitions. [2018-01-27 23:00:09,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-27 23:00:09,117 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 214 [2018-01-27 23:00:09,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:09,119 INFO L225 Difference]: With dead ends: 198 [2018-01-27 23:00:09,119 INFO L226 Difference]: Without dead ends: 149 [2018-01-27 23:00:09,119 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-27 23:00:09,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-01-27 23:00:09,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 145. [2018-01-27 23:00:09,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-01-27 23:00:09,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 154 transitions. [2018-01-27 23:00:09,126 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 154 transitions. Word has length 214 [2018-01-27 23:00:09,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:09,126 INFO L432 AbstractCegarLoop]: Abstraction has 145 states and 154 transitions. [2018-01-27 23:00:09,126 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-27 23:00:09,127 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 154 transitions. [2018-01-27 23:00:09,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-01-27 23:00:09,128 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:09,128 INFO L330 BasicCegarLoop]: trace histogram [21, 18, 18, 12, 12, 12, 10, 9, 9, 9, 9, 6, 5, 4, 4, 4, 4, 4, 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] [2018-01-27 23:00:09,128 INFO L371 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:09,129 INFO L82 PathProgramCache]: Analyzing trace with hash 545835029, now seen corresponding path program 16 times [2018-01-27 23:00:09,129 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:09,129 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:09,130 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:09,130 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:09,130 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:09,145 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:09,145 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:09,145 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 23:00:09,158 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:09,248 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:09,254 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:10,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2018-01-27 23:00:10,389 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:10,389 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-01-27 23:00:10,389 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-27 23:00:10,390 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-27 23:00:10,390 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-01-27 23:00:10,390 INFO L87 Difference]: Start difference. First operand 145 states and 154 transitions. Second operand 12 states. [2018-01-27 23:00:10,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:10,435 INFO L93 Difference]: Finished difference Result 243 states and 261 transitions. [2018-01-27 23:00:10,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-27 23:00:10,436 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 220 [2018-01-27 23:00:10,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:10,437 INFO L225 Difference]: With dead ends: 243 [2018-01-27 23:00:10,437 INFO L226 Difference]: Without dead ends: 153 [2018-01-27 23:00:10,437 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-01-27 23:00:10,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-01-27 23:00:10,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 150. [2018-01-27 23:00:10,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-27 23:00:10,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 159 transitions. [2018-01-27 23:00:10,444 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 159 transitions. Word has length 220 [2018-01-27 23:00:10,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:10,444 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 159 transitions. [2018-01-27 23:00:10,444 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-27 23:00:10,444 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 159 transitions. [2018-01-27 23:00:10,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-01-27 23:00:10,446 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:10,446 INFO L330 BasicCegarLoop]: trace histogram [21, 18, 18, 12, 12, 12, 11, 10, 10, 10, 10, 6, 5, 4, 4, 4, 4, 4, 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] [2018-01-27 23:00:10,446 INFO L371 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:10,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1006957833, now seen corresponding path program 17 times [2018-01-27 23:00:10,446 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:10,446 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:10,447 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:10,447 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:10,447 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:10,462 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:10,462 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:10,462 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-27 23:00:10,478 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-27 23:00:10,495 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:10,497 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:10,499 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:10,501 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:10,506 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:10,510 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:10,610 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:10,611 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:10,613 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:10,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1159 backedges. 439 proven. 48 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2018-01-27 23:00:10,675 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:10,675 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-01-27 23:00:10,675 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-27 23:00:10,675 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-27 23:00:10,676 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-01-27 23:00:10,676 INFO L87 Difference]: Start difference. First operand 150 states and 159 transitions. Second operand 8 states. [2018-01-27 23:00:10,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:10,708 INFO L93 Difference]: Finished difference Result 246 states and 268 transitions. [2018-01-27 23:00:10,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-27 23:00:10,709 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 225 [2018-01-27 23:00:10,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:10,710 INFO L225 Difference]: With dead ends: 246 [2018-01-27 23:00:10,710 INFO L226 Difference]: Without dead ends: 160 [2018-01-27 23:00:10,711 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-01-27 23:00:10,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-01-27 23:00:10,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2018-01-27 23:00:10,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-01-27 23:00:10,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 166 transitions. [2018-01-27 23:00:10,718 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 166 transitions. Word has length 225 [2018-01-27 23:00:10,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:10,718 INFO L432 AbstractCegarLoop]: Abstraction has 156 states and 166 transitions. [2018-01-27 23:00:10,719 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-27 23:00:10,719 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 166 transitions. [2018-01-27 23:00:10,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-01-27 23:00:10,720 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:10,720 INFO L330 BasicCegarLoop]: trace histogram [24, 21, 21, 15, 15, 15, 11, 10, 10, 10, 10, 6, 5, 4, 4, 4, 4, 4, 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] [2018-01-27 23:00:10,720 INFO L371 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:10,721 INFO L82 PathProgramCache]: Analyzing trace with hash -2059298527, now seen corresponding path program 18 times [2018-01-27 23:00:10,721 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:10,721 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:10,722 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:10,722 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:10,722 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:10,738 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:10,738 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:10,738 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 23:00:10,751 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:10,775 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:10,779 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:10,786 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:10,799 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:10,812 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:10,825 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:10,832 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:10,841 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:10,944 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:11,013 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:11,065 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:11,067 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:11,072 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:11,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 607 proven. 44 refuted. 0 times theorem prover too weak. 832 trivial. 0 not checked. [2018-01-27 23:00:11,794 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:11,794 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-01-27 23:00:11,795 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-27 23:00:11,795 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-27 23:00:11,795 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-01-27 23:00:11,795 INFO L87 Difference]: Start difference. First operand 156 states and 166 transitions. Second operand 9 states. [2018-01-27 23:00:11,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:11,826 INFO L93 Difference]: Finished difference Result 221 states and 238 transitions. [2018-01-27 23:00:11,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-27 23:00:11,827 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 243 [2018-01-27 23:00:11,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:11,828 INFO L225 Difference]: With dead ends: 221 [2018-01-27 23:00:11,828 INFO L226 Difference]: Without dead ends: 166 [2018-01-27 23:00:11,828 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-01-27 23:00:11,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-01-27 23:00:11,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 162. [2018-01-27 23:00:11,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-01-27 23:00:11,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 172 transitions. [2018-01-27 23:00:11,836 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 172 transitions. Word has length 243 [2018-01-27 23:00:11,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:11,837 INFO L432 AbstractCegarLoop]: Abstraction has 162 states and 172 transitions. [2018-01-27 23:00:11,837 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-27 23:00:11,837 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 172 transitions. [2018-01-27 23:00:11,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-01-27 23:00:11,838 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:11,839 INFO L330 BasicCegarLoop]: trace histogram [24, 21, 21, 15, 15, 15, 11, 10, 10, 10, 10, 6, 6, 5, 5, 5, 5, 5, 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] [2018-01-27 23:00:11,839 INFO L371 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:11,839 INFO L82 PathProgramCache]: Analyzing trace with hash -827524983, now seen corresponding path program 19 times [2018-01-27 23:00:11,839 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:11,839 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:11,840 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:11,840 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:11,840 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:11,854 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:11,855 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:11,855 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-27 23:00:11,865 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:00:11,940 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:12,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1509 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 1264 trivial. 0 not checked. [2018-01-27 23:00:12,127 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:12,127 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-01-27 23:00:12,128 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-27 23:00:12,128 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-27 23:00:12,128 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-01-27 23:00:12,128 INFO L87 Difference]: Start difference. First operand 162 states and 172 transitions. Second operand 13 states. [2018-01-27 23:00:12,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:12,237 INFO L93 Difference]: Finished difference Result 272 states and 292 transitions. [2018-01-27 23:00:12,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-27 23:00:12,237 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 249 [2018-01-27 23:00:12,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:12,239 INFO L225 Difference]: With dead ends: 272 [2018-01-27 23:00:12,239 INFO L226 Difference]: Without dead ends: 170 [2018-01-27 23:00:12,239 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-01-27 23:00:12,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-01-27 23:00:12,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2018-01-27 23:00:12,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-01-27 23:00:12,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 177 transitions. [2018-01-27 23:00:12,247 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 177 transitions. Word has length 249 [2018-01-27 23:00:12,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:12,247 INFO L432 AbstractCegarLoop]: Abstraction has 167 states and 177 transitions. [2018-01-27 23:00:12,247 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-27 23:00:12,247 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 177 transitions. [2018-01-27 23:00:12,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-01-27 23:00:12,249 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:12,249 INFO L330 BasicCegarLoop]: trace histogram [24, 21, 21, 15, 15, 15, 12, 11, 11, 11, 11, 6, 6, 5, 5, 5, 5, 5, 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] [2018-01-27 23:00:12,249 INFO L371 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:12,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1792444185, now seen corresponding path program 20 times [2018-01-27 23:00:12,249 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:12,249 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:12,251 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:12,251 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:12,251 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:12,280 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:12,281 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:12,281 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 23:00:12,295 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:12,317 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:12,347 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:12,351 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:12,355 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:12,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1561 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 1264 trivial. 0 not checked. [2018-01-27 23:00:12,554 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:12,554 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-01-27 23:00:12,555 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-27 23:00:12,555 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-27 23:00:12,555 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-01-27 23:00:12,555 INFO L87 Difference]: Start difference. First operand 167 states and 177 transitions. Second operand 14 states. [2018-01-27 23:00:13,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:13,098 INFO L93 Difference]: Finished difference Result 277 states and 297 transitions. [2018-01-27 23:00:13,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-27 23:00:13,098 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 254 [2018-01-27 23:00:13,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:13,099 INFO L225 Difference]: With dead ends: 277 [2018-01-27 23:00:13,099 INFO L226 Difference]: Without dead ends: 175 [2018-01-27 23:00:13,100 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-01-27 23:00:13,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-01-27 23:00:13,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 172. [2018-01-27 23:00:13,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-01-27 23:00:13,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 182 transitions. [2018-01-27 23:00:13,108 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 182 transitions. Word has length 254 [2018-01-27 23:00:13,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:13,108 INFO L432 AbstractCegarLoop]: Abstraction has 172 states and 182 transitions. [2018-01-27 23:00:13,108 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-27 23:00:13,108 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 182 transitions. [2018-01-27 23:00:13,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-01-27 23:00:13,110 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:13,110 INFO L330 BasicCegarLoop]: trace histogram [24, 21, 21, 15, 15, 15, 13, 12, 12, 12, 12, 6, 6, 5, 5, 5, 5, 5, 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] [2018-01-27 23:00:13,110 INFO L371 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:13,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1998290103, now seen corresponding path program 21 times [2018-01-27 23:00:13,111 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:13,111 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:13,111 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:13,111 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:13,112 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:13,132 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:13,132 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:13,132 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:13,142 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-27 23:00:13,164 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:13,173 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:13,194 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:14,388 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:14,437 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:14,626 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:14,653 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:14,654 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:14,658 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:14,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 617 proven. 70 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2018-01-27 23:00:14,808 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:14,808 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-01-27 23:00:14,808 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-27 23:00:14,809 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-27 23:00:14,809 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-01-27 23:00:14,809 INFO L87 Difference]: Start difference. First operand 172 states and 182 transitions. Second operand 10 states. [2018-01-27 23:00:14,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:14,845 INFO L93 Difference]: Finished difference Result 237 states and 254 transitions. [2018-01-27 23:00:14,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-27 23:00:14,846 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 259 [2018-01-27 23:00:14,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:14,847 INFO L225 Difference]: With dead ends: 237 [2018-01-27 23:00:14,847 INFO L226 Difference]: Without dead ends: 182 [2018-01-27 23:00:14,847 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-01-27 23:00:14,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-01-27 23:00:14,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 178. [2018-01-27 23:00:14,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-01-27 23:00:14,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 188 transitions. [2018-01-27 23:00:14,855 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 188 transitions. Word has length 259 [2018-01-27 23:00:14,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:14,855 INFO L432 AbstractCegarLoop]: Abstraction has 178 states and 188 transitions. [2018-01-27 23:00:14,855 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-27 23:00:14,856 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 188 transitions. [2018-01-27 23:00:14,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-01-27 23:00:14,857 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:14,857 INFO L330 BasicCegarLoop]: trace histogram [24, 21, 21, 15, 15, 15, 13, 12, 12, 12, 12, 7, 6, 6, 6, 6, 6, 6, 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] [2018-01-27 23:00:14,857 INFO L371 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:14,858 INFO L82 PathProgramCache]: Analyzing trace with hash -957242191, now seen corresponding path program 22 times [2018-01-27 23:00:14,858 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:14,858 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:14,859 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:14,859 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:14,859 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:14,877 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:14,877 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:14,877 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 23:00:14,893 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:15,317 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:15,322 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:15,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 1296 trivial. 0 not checked. [2018-01-27 23:00:15,739 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:15,739 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-01-27 23:00:15,740 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-27 23:00:15,740 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-27 23:00:15,740 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-01-27 23:00:15,740 INFO L87 Difference]: Start difference. First operand 178 states and 188 transitions. Second operand 15 states. [2018-01-27 23:00:15,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:15,861 INFO L93 Difference]: Finished difference Result 294 states and 314 transitions. [2018-01-27 23:00:15,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-27 23:00:15,861 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 265 [2018-01-27 23:00:15,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:15,863 INFO L225 Difference]: With dead ends: 294 [2018-01-27 23:00:15,863 INFO L226 Difference]: Without dead ends: 186 [2018-01-27 23:00:15,863 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-01-27 23:00:15,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-01-27 23:00:15,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 183. [2018-01-27 23:00:15,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-01-27 23:00:15,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 193 transitions. [2018-01-27 23:00:15,871 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 193 transitions. Word has length 265 [2018-01-27 23:00:15,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:15,871 INFO L432 AbstractCegarLoop]: Abstraction has 183 states and 193 transitions. [2018-01-27 23:00:15,872 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-27 23:00:15,872 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 193 transitions. [2018-01-27 23:00:15,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-01-27 23:00:15,873 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:15,873 INFO L330 BasicCegarLoop]: trace histogram [24, 21, 21, 15, 15, 15, 14, 13, 13, 13, 13, 7, 6, 6, 6, 6, 6, 6, 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] [2018-01-27 23:00:15,874 INFO L371 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:15,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1563580145, now seen corresponding path program 23 times [2018-01-27 23:00:15,874 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:15,874 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:15,875 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:15,875 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:15,875 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:15,892 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:15,893 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:15,893 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-27 23:00:15,899 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-27 23:00:15,916 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:15,918 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:15,920 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:15,926 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:15,932 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:15,941 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:15,956 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:15,969 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:15,970 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:15,974 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:16,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1712 backedges. 594 proven. 75 refuted. 0 times theorem prover too weak. 1043 trivial. 0 not checked. [2018-01-27 23:00:16,130 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:16,130 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-01-27 23:00:16,130 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-27 23:00:16,130 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-27 23:00:16,130 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-27 23:00:16,131 INFO L87 Difference]: Start difference. First operand 183 states and 193 transitions. Second operand 9 states. [2018-01-27 23:00:16,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:16,162 INFO L93 Difference]: Finished difference Result 297 states and 321 transitions. [2018-01-27 23:00:16,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-27 23:00:16,162 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 270 [2018-01-27 23:00:16,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:16,163 INFO L225 Difference]: With dead ends: 297 [2018-01-27 23:00:16,163 INFO L226 Difference]: Without dead ends: 193 [2018-01-27 23:00:16,164 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-27 23:00:16,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-01-27 23:00:16,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2018-01-27 23:00:16,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-27 23:00:16,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 200 transitions. [2018-01-27 23:00:16,171 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 200 transitions. Word has length 270 [2018-01-27 23:00:16,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:16,172 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 200 transitions. [2018-01-27 23:00:16,172 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-27 23:00:16,172 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 200 transitions. [2018-01-27 23:00:16,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-01-27 23:00:16,174 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:16,174 INFO L330 BasicCegarLoop]: trace histogram [27, 24, 24, 18, 18, 18, 14, 13, 13, 13, 13, 7, 6, 6, 6, 6, 6, 6, 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] [2018-01-27 23:00:16,174 INFO L371 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:16,174 INFO L82 PathProgramCache]: Analyzing trace with hash -2022761159, now seen corresponding path program 24 times [2018-01-27 23:00:16,174 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:16,175 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:16,176 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:16,176 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:16,176 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:16,192 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:16,193 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:16,193 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 23:00:16,204 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:16,230 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:16,235 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:16,242 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:16,251 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:16,261 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:16,387 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:16,479 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:16,495 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:16,505 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:16,515 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:16,560 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:19,376 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:19,569 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:20,083 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:20,348 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:20,350 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:20,354 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:20,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2090 backedges. 732 proven. 102 refuted. 0 times theorem prover too weak. 1256 trivial. 0 not checked. [2018-01-27 23:00:20,439 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:20,439 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-01-27 23:00:20,439 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-27 23:00:20,439 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-27 23:00:20,439 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-27 23:00:20,440 INFO L87 Difference]: Start difference. First operand 189 states and 200 transitions. Second operand 9 states. [2018-01-27 23:00:20,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:20,477 INFO L93 Difference]: Finished difference Result 260 states and 279 transitions. [2018-01-27 23:00:20,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-27 23:00:20,477 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 288 [2018-01-27 23:00:20,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:20,479 INFO L225 Difference]: With dead ends: 260 [2018-01-27 23:00:20,479 INFO L226 Difference]: Without dead ends: 199 [2018-01-27 23:00:20,479 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-27 23:00:20,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-01-27 23:00:20,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 195. [2018-01-27 23:00:20,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-01-27 23:00:20,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 206 transitions. [2018-01-27 23:00:20,487 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 206 transitions. Word has length 288 [2018-01-27 23:00:20,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:20,488 INFO L432 AbstractCegarLoop]: Abstraction has 195 states and 206 transitions. [2018-01-27 23:00:20,488 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-27 23:00:20,488 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 206 transitions. [2018-01-27 23:00:20,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-01-27 23:00:20,490 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:20,490 INFO L330 BasicCegarLoop]: trace histogram [27, 24, 24, 18, 18, 18, 14, 13, 13, 13, 13, 8, 7, 7, 7, 7, 7, 6, 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] [2018-01-27 23:00:20,490 INFO L371 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:20,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1168464607, now seen corresponding path program 25 times [2018-01-27 23:00:20,491 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:20,491 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:20,491 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:20,492 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:20,492 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:20,514 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:20,514 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:20,514 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 23:00:20,527 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:00:20,606 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:21,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2128 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 1712 trivial. 0 not checked. [2018-01-27 23:00:21,328 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:21,328 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-01-27 23:00:21,329 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-01-27 23:00:21,329 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-01-27 23:00:21,329 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-01-27 23:00:21,329 INFO L87 Difference]: Start difference. First operand 195 states and 206 transitions. Second operand 16 states. [2018-01-27 23:00:21,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:21,416 INFO L93 Difference]: Finished difference Result 323 states and 345 transitions. [2018-01-27 23:00:21,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-27 23:00:21,416 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 294 [2018-01-27 23:00:21,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:21,417 INFO L225 Difference]: With dead ends: 323 [2018-01-27 23:00:21,417 INFO L226 Difference]: Without dead ends: 203 [2018-01-27 23:00:21,418 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-01-27 23:00:21,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-01-27 23:00:21,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 200. [2018-01-27 23:00:21,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-01-27 23:00:21,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 211 transitions. [2018-01-27 23:00:21,430 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 211 transitions. Word has length 294 [2018-01-27 23:00:21,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:21,430 INFO L432 AbstractCegarLoop]: Abstraction has 200 states and 211 transitions. [2018-01-27 23:00:21,430 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-01-27 23:00:21,430 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 211 transitions. [2018-01-27 23:00:21,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-01-27 23:00:21,432 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:21,432 INFO L330 BasicCegarLoop]: trace histogram [27, 24, 24, 18, 18, 18, 15, 14, 14, 14, 14, 8, 7, 7, 7, 7, 7, 6, 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] [2018-01-27 23:00:21,432 INFO L371 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:21,432 INFO L82 PathProgramCache]: Analyzing trace with hash 773072259, now seen corresponding path program 26 times [2018-01-27 23:00:21,433 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:21,433 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:21,434 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:21,434 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:00:21,434 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:21,454 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:21,454 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:21,454 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:21,465 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-27 23:00:21,486 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:21,520 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:21,525 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:21,530 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:21,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2195 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 1712 trivial. 0 not checked. [2018-01-27 23:00:21,978 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:21,979 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-01-27 23:00:21,979 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-27 23:00:21,979 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-27 23:00:21,979 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-01-27 23:00:21,980 INFO L87 Difference]: Start difference. First operand 200 states and 211 transitions. Second operand 17 states. [2018-01-27 23:00:22,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:22,219 INFO L93 Difference]: Finished difference Result 328 states and 350 transitions. [2018-01-27 23:00:22,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-27 23:00:22,220 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 299 [2018-01-27 23:00:22,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:22,222 INFO L225 Difference]: With dead ends: 328 [2018-01-27 23:00:22,222 INFO L226 Difference]: Without dead ends: 208 [2018-01-27 23:00:22,223 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-01-27 23:00:22,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-01-27 23:00:22,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 205. [2018-01-27 23:00:22,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-01-27 23:00:22,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 216 transitions. [2018-01-27 23:00:22,230 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 216 transitions. Word has length 299 [2018-01-27 23:00:22,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:22,230 INFO L432 AbstractCegarLoop]: Abstraction has 205 states and 216 transitions. [2018-01-27 23:00:22,230 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-27 23:00:22,230 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 216 transitions. [2018-01-27 23:00:22,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-01-27 23:00:22,246 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:22,247 INFO L330 BasicCegarLoop]: trace histogram [27, 24, 24, 18, 18, 18, 16, 15, 15, 15, 15, 8, 7, 7, 7, 7, 7, 6, 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] [2018-01-27 23:00:22,247 INFO L371 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:22,247 INFO L82 PathProgramCache]: Analyzing trace with hash 965055073, now seen corresponding path program 27 times [2018-01-27 23:00:22,247 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:22,247 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:22,248 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:22,248 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:22,248 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:22,268 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:22,268 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:22,268 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 23:00:22,280 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:22,307 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:22,315 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:22,328 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:22,340 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:22,356 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:22,409 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:22,439 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:22,461 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:22,527 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 23:00:22,529 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:22,533 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:22,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2267 backedges. 732 proven. 140 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2018-01-27 23:00:23,005 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:23,005 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-01-27 23:00:23,005 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-27 23:00:23,006 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-27 23:00:23,006 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-01-27 23:00:23,006 INFO L87 Difference]: Start difference. First operand 205 states and 216 transitions. Second operand 10 states. [2018-01-27 23:00:23,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:23,046 INFO L93 Difference]: Finished difference Result 276 states and 295 transitions. [2018-01-27 23:00:23,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-27 23:00:23,046 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 304 [2018-01-27 23:00:23,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:23,048 INFO L225 Difference]: With dead ends: 276 [2018-01-27 23:00:23,049 INFO L226 Difference]: Without dead ends: 215 [2018-01-27 23:00:23,049 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-01-27 23:00:23,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-01-27 23:00:23,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 211. [2018-01-27 23:00:23,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-01-27 23:00:23,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 222 transitions. [2018-01-27 23:00:23,057 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 222 transitions. Word has length 304 [2018-01-27 23:00:23,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:23,058 INFO L432 AbstractCegarLoop]: Abstraction has 211 states and 222 transitions. [2018-01-27 23:00:23,058 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-27 23:00:23,058 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 222 transitions. [2018-01-27 23:00:23,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-01-27 23:00:23,060 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:23,060 INFO L330 BasicCegarLoop]: trace histogram [27, 24, 24, 18, 18, 18, 16, 15, 15, 15, 15, 9, 8, 8, 8, 8, 8, 6, 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] [2018-01-27 23:00:23,060 INFO L371 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:23,061 INFO L82 PathProgramCache]: Analyzing trace with hash -2130797495, now seen corresponding path program 28 times [2018-01-27 23:00:23,061 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:23,061 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:23,061 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:23,062 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:23,062 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:23,080 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:23,080 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:23,080 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:23,092 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-27 23:00:23,359 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:23,363 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:24,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2311 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 1756 trivial. 0 not checked. [2018-01-27 23:00:24,268 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:24,268 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-01-27 23:00:24,269 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-27 23:00:24,269 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-27 23:00:24,269 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-01-27 23:00:24,269 INFO L87 Difference]: Start difference. First operand 211 states and 222 transitions. Second operand 18 states. [2018-01-27 23:00:24,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:24,365 INFO L93 Difference]: Finished difference Result 345 states and 367 transitions. [2018-01-27 23:00:24,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-27 23:00:24,366 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 310 [2018-01-27 23:00:24,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:24,366 INFO L225 Difference]: With dead ends: 345 [2018-01-27 23:00:24,367 INFO L226 Difference]: Without dead ends: 219 [2018-01-27 23:00:24,367 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-01-27 23:00:24,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-01-27 23:00:24,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 216. [2018-01-27 23:00:24,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-01-27 23:00:24,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 227 transitions. [2018-01-27 23:00:24,372 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 227 transitions. Word has length 310 [2018-01-27 23:00:24,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:24,373 INFO L432 AbstractCegarLoop]: Abstraction has 216 states and 227 transitions. [2018-01-27 23:00:24,373 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-27 23:00:24,373 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 227 transitions. [2018-01-27 23:00:24,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-01-27 23:00:24,375 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:24,375 INFO L330 BasicCegarLoop]: trace histogram [27, 24, 24, 18, 18, 18, 17, 16, 16, 16, 16, 9, 8, 8, 8, 8, 8, 6, 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] [2018-01-27 23:00:24,375 INFO L371 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:24,375 INFO L82 PathProgramCache]: Analyzing trace with hash 851384491, now seen corresponding path program 29 times [2018-01-27 23:00:24,375 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:24,375 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:24,376 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:24,376 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:24,376 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:24,397 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:24,397 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:24,397 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-27 23:00:24,406 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-27 23:00:24,422 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:24,425 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:24,428 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:24,431 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:24,438 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:24,555 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:24,570 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:24,795 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:24,960 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 23:00:24,961 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 23:00:24,965 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:00:25,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2388 backedges. 889 proven. 10 refuted. 0 times theorem prover too weak. 1489 trivial. 0 not checked. [2018-01-27 23:00:25,023 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:00:25,023 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-01-27 23:00:25,024 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-27 23:00:25,024 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-27 23:00:25,024 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-27 23:00:25,024 INFO L87 Difference]: Start difference. First operand 216 states and 227 transitions. Second operand 5 states. [2018-01-27 23:00:25,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:00:25,043 INFO L93 Difference]: Finished difference Result 343 states and 367 transitions. [2018-01-27 23:00:25,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-27 23:00:25,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 315 [2018-01-27 23:00:25,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:00:25,044 INFO L225 Difference]: With dead ends: 343 [2018-01-27 23:00:25,045 INFO L226 Difference]: Without dead ends: 221 [2018-01-27 23:00:25,045 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-27 23:00:25,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-01-27 23:00:25,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 220. [2018-01-27 23:00:25,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-01-27 23:00:25,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 231 transitions. [2018-01-27 23:00:25,055 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 231 transitions. Word has length 315 [2018-01-27 23:00:25,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:00:25,055 INFO L432 AbstractCegarLoop]: Abstraction has 220 states and 231 transitions. [2018-01-27 23:00:25,055 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-27 23:00:25,056 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 231 transitions. [2018-01-27 23:00:25,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-01-27 23:00:25,057 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:00:25,058 INFO L330 BasicCegarLoop]: trace histogram [30, 27, 27, 18, 18, 18, 17, 16, 16, 16, 16, 9, 9, 8, 8, 8, 8, 8, 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] [2018-01-27 23:00:25,058 INFO L371 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:00:25,058 INFO L82 PathProgramCache]: Analyzing trace with hash 788126034, now seen corresponding path program 30 times [2018-01-27 23:00:25,058 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:00:25,058 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:00:25,060 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:25,060 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:00:25,060 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:00:25,082 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 23:00:25,083 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 23:00:25,083 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 23:00:25,096 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 23:00:25,123 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:25,127 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:25,134 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:25,143 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:25,155 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:25,168 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:25,182 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:25,192 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:25,794 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:26,048 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:27,617 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:27,629 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:27,652 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:27,677 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:28,704 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 23:00:29,439 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