java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/vogal-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 11:30:12,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 11:30:12,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 11:30:12,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 11:30:12,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 11:30:12,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 11:30:12,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 11:30:12,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 11:30:12,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 11:30:12,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 11:30:12,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 11:30:12,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 11:30:12,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 11:30:12,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 11:30:12,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 11:30:12,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 11:30:12,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 11:30:12,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 11:30:12,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 11:30:12,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 11:30:12,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 11:30:12,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 11:30:12,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 11:30:12,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 11:30:12,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 11:30:12,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 11:30:12,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 11:30:12,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 11:30:12,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 11:30:12,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 11:30:12,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 11:30:12,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 11:30:12,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 11:30:12,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 11:30:12,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 11:30:12,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 11:30:12,287 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-02 11:30:12,301 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 11:30:12,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 11:30:12,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-02 11:30:12,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-02 11:30:12,303 INFO L138 SettingsManager]: * Use SBE=true [2019-10-02 11:30:12,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 11:30:12,304 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 11:30:12,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-02 11:30:12,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 11:30:12,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 11:30:12,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 11:30:12,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 11:30:12,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 11:30:12,305 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 11:30:12,305 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 11:30:12,305 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-02 11:30:12,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 11:30:12,306 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 11:30:12,306 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 11:30:12,306 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-02 11:30:12,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-02 11:30:12,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 11:30:12,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 11:30:12,307 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 11:30:12,307 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-02 11:30:12,307 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-02 11:30:12,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 11:30:12,308 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-02 11:30:12,308 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 11:30:12,340 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 11:30:12,352 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 11:30:12,356 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 11:30:12,357 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 11:30:12,358 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 11:30:12,359 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/vogal-2.i [2019-10-02 11:30:12,429 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfb1e722e/fbe3c3ade3ea4050a4204ede77466867/FLAG8f12005e6 [2019-10-02 11:30:12,888 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 11:30:12,889 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/vogal-2.i [2019-10-02 11:30:12,897 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfb1e722e/fbe3c3ade3ea4050a4204ede77466867/FLAG8f12005e6 [2019-10-02 11:30:13,287 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfb1e722e/fbe3c3ade3ea4050a4204ede77466867 [2019-10-02 11:30:13,298 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 11:30:13,301 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 11:30:13,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 11:30:13,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 11:30:13,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 11:30:13,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 11:30:13" (1/1) ... [2019-10-02 11:30:13,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70362dc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:30:13, skipping insertion in model container [2019-10-02 11:30:13,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 11:30:13" (1/1) ... [2019-10-02 11:30:13,319 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 11:30:13,342 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 11:30:13,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 11:30:13,557 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 11:30:13,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 11:30:13,690 INFO L192 MainTranslator]: Completed translation [2019-10-02 11:30:13,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:30:13 WrapperNode [2019-10-02 11:30:13,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 11:30:13,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 11:30:13,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 11:30:13,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 11:30:13,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:30:13" (1/1) ... [2019-10-02 11:30:13,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:30:13" (1/1) ... [2019-10-02 11:30:13,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:30:13" (1/1) ... [2019-10-02 11:30:13,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:30:13" (1/1) ... [2019-10-02 11:30:13,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:30:13" (1/1) ... [2019-10-02 11:30:13,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:30:13" (1/1) ... [2019-10-02 11:30:13,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:30:13" (1/1) ... [2019-10-02 11:30:13,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 11:30:13,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 11:30:13,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 11:30:13,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 11:30:13,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:30:13" (1/1) ... No working directory specified, using /storage/repos/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 [2019-10-02 11:30:13,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 11:30:13,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 11:30:13,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 11:30:13,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 11:30:13,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 11:30:13,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 11:30:13,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-02 11:30:13,803 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 11:30:13,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 11:30:13,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-02 11:30:13,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 11:30:13,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 11:30:13,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 11:30:13,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 11:30:13,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 11:30:14,139 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 11:30:14,140 INFO L283 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-02 11:30:14,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:30:14 BoogieIcfgContainer [2019-10-02 11:30:14,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 11:30:14,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 11:30:14,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 11:30:14,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 11:30:14,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 11:30:13" (1/3) ... [2019-10-02 11:30:14,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a44b1cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:30:14, skipping insertion in model container [2019-10-02 11:30:14,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:30:13" (2/3) ... [2019-10-02 11:30:14,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a44b1cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:30:14, skipping insertion in model container [2019-10-02 11:30:14,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:30:14" (3/3) ... [2019-10-02 11:30:14,149 INFO L109 eAbstractionObserver]: Analyzing ICFG vogal-2.i [2019-10-02 11:30:14,160 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 11:30:14,173 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 11:30:14,190 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 11:30:14,222 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-10-02 11:30:14,222 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 11:30:14,222 INFO L378 AbstractCegarLoop]: Hoare is true [2019-10-02 11:30:14,223 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 11:30:14,223 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 11:30:14,223 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 11:30:14,223 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 11:30:14,223 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 11:30:14,223 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 11:30:14,242 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-10-02 11:30:14,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-02 11:30:14,248 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:30:14,250 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:30:14,252 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:30:14,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:30:14,258 INFO L82 PathProgramCache]: Analyzing trace with hash 907546272, now seen corresponding path program 1 times [2019-10-02 11:30:14,261 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:30:14,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:30:14,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:14,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:30:14,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:30:14,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:30:14,410 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 11:30:14,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 11:30:14,415 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 11:30:14,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 11:30:14,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 11:30:14,431 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2019-10-02 11:30:14,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:30:14,469 INFO L93 Difference]: Finished difference Result 64 states and 91 transitions. [2019-10-02 11:30:14,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 11:30:14,471 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-10-02 11:30:14,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:30:14,484 INFO L225 Difference]: With dead ends: 64 [2019-10-02 11:30:14,485 INFO L226 Difference]: Without dead ends: 29 [2019-10-02 11:30:14,495 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 11:30:14,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-02 11:30:14,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-02 11:30:14,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-02 11:30:14,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2019-10-02 11:30:14,565 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 17 [2019-10-02 11:30:14,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:30:14,567 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2019-10-02 11:30:14,567 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 11:30:14,567 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2019-10-02 11:30:14,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-02 11:30:14,570 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:30:14,570 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:30:14,571 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:30:14,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:30:14,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1455815888, now seen corresponding path program 1 times [2019-10-02 11:30:14,573 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:30:14,574 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:30:14,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:14,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:30:14,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:30:14,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:30:14,749 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 11:30:14,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 11:30:14,755 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 11:30:14,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 11:30:14,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 11:30:14,756 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand 3 states. [2019-10-02 11:30:14,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:30:14,880 INFO L93 Difference]: Finished difference Result 65 states and 85 transitions. [2019-10-02 11:30:14,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 11:30:14,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-10-02 11:30:14,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:30:14,883 INFO L225 Difference]: With dead ends: 65 [2019-10-02 11:30:14,884 INFO L226 Difference]: Without dead ends: 44 [2019-10-02 11:30:14,885 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 11:30:14,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-10-02 11:30:14,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 30. [2019-10-02 11:30:14,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-02 11:30:14,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2019-10-02 11:30:14,895 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 19 [2019-10-02 11:30:14,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:30:14,896 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-10-02 11:30:14,896 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 11:30:14,896 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2019-10-02 11:30:14,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-02 11:30:14,897 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:30:14,897 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:30:14,898 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:30:14,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:30:14,898 INFO L82 PathProgramCache]: Analyzing trace with hash -941161554, now seen corresponding path program 1 times [2019-10-02 11:30:14,898 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:30:14,899 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:30:14,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:14,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:30:14,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:30:15,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:30:15,046 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 11:30:15,046 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-10-02 11:30:15,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:30:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:30:15,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-02 11:30:15,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:30:15,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-02 11:30:15,191 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 11:30:15,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2019-10-02 11:30:15,192 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-02 11:30:15,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-02 11:30:15,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-02 11:30:15,193 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 8 states. [2019-10-02 11:30:15,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:30:15,536 INFO L93 Difference]: Finished difference Result 137 states and 188 transitions. [2019-10-02 11:30:15,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-02 11:30:15,538 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2019-10-02 11:30:15,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:30:15,542 INFO L225 Difference]: With dead ends: 137 [2019-10-02 11:30:15,542 INFO L226 Difference]: Without dead ends: 111 [2019-10-02 11:30:15,543 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-10-02 11:30:15,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2019-10-02 11:30:15,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 44. [2019-10-02 11:30:15,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-02 11:30:15,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2019-10-02 11:30:15,567 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 21 [2019-10-02 11:30:15,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:30:15,567 INFO L475 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2019-10-02 11:30:15,567 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-02 11:30:15,568 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2019-10-02 11:30:15,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-02 11:30:15,570 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:30:15,571 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:30:15,571 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:30:15,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:30:15,571 INFO L82 PathProgramCache]: Analyzing trace with hash -2022961947, now seen corresponding path program 1 times [2019-10-02 11:30:15,572 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:30:15,572 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:30:15,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:15,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:30:15,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:30:15,778 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-02 11:30:15,779 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 11:30:15,779 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-10-02 11:30:15,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 11:30:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:30:15,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-02 11:30:15,844 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:30:15,875 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-02 11:30:15,880 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 11:30:15,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2019-10-02 11:30:15,881 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-02 11:30:15,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-02 11:30:15,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-10-02 11:30:15,884 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand 7 states. [2019-10-02 11:30:16,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:30:16,090 INFO L93 Difference]: Finished difference Result 207 states and 284 transitions. [2019-10-02 11:30:16,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-02 11:30:16,090 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2019-10-02 11:30:16,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:30:16,093 INFO L225 Difference]: With dead ends: 207 [2019-10-02 11:30:16,094 INFO L226 Difference]: Without dead ends: 174 [2019-10-02 11:30:16,094 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-02 11:30:16,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2019-10-02 11:30:16,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 50. [2019-10-02 11:30:16,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-10-02 11:30:16,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 63 transitions. [2019-10-02 11:30:16,110 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 63 transitions. Word has length 29 [2019-10-02 11:30:16,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:30:16,110 INFO L475 AbstractCegarLoop]: Abstraction has 50 states and 63 transitions. [2019-10-02 11:30:16,110 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-02 11:30:16,110 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 63 transitions. [2019-10-02 11:30:16,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-02 11:30:16,112 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:30:16,112 INFO L411 BasicCegarLoop]: trace histogram [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] [2019-10-02 11:30:16,112 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:30:16,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:30:16,113 INFO L82 PathProgramCache]: Analyzing trace with hash -38007360, now seen corresponding path program 1 times [2019-10-02 11:30:16,113 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:30:16,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:30:16,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:16,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:30:16,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:30:16,236 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-02 11:30:16,237 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 11:30:16,237 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-10-02 11:30:16,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:30:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:30:16,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-02 11:30:16,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:30:16,335 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-02 11:30:16,339 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 11:30:16,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2019-10-02 11:30:16,339 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-02 11:30:16,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-02 11:30:16,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-02 11:30:16,341 INFO L87 Difference]: Start difference. First operand 50 states and 63 transitions. Second operand 8 states. [2019-10-02 11:30:16,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:30:16,741 INFO L93 Difference]: Finished difference Result 306 states and 453 transitions. [2019-10-02 11:30:16,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-02 11:30:16,742 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2019-10-02 11:30:16,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:30:16,744 INFO L225 Difference]: With dead ends: 306 [2019-10-02 11:30:16,745 INFO L226 Difference]: Without dead ends: 269 [2019-10-02 11:30:16,746 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-10-02 11:30:16,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2019-10-02 11:30:16,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 68. [2019-10-02 11:30:16,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-10-02 11:30:16,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 85 transitions. [2019-10-02 11:30:16,762 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 85 transitions. Word has length 32 [2019-10-02 11:30:16,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:30:16,762 INFO L475 AbstractCegarLoop]: Abstraction has 68 states and 85 transitions. [2019-10-02 11:30:16,762 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-02 11:30:16,763 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 85 transitions. [2019-10-02 11:30:16,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-02 11:30:16,764 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:30:16,765 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 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] [2019-10-02 11:30:16,765 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:30:16,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:30:16,765 INFO L82 PathProgramCache]: Analyzing trace with hash -165054150, now seen corresponding path program 2 times [2019-10-02 11:30:16,766 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:30:16,766 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:30:16,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:16,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:30:16,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:30:16,927 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-02 11:30:16,928 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 11:30:16,928 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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) [2019-10-02 11:30:16,955 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 11:30:16,996 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-02 11:30:16,997 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 11:30:17,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-02 11:30:17,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:30:17,055 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2019-10-02 11:30:17,061 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 11:30:17,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 10 [2019-10-02 11:30:17,061 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-02 11:30:17,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-02 11:30:17,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-10-02 11:30:17,062 INFO L87 Difference]: Start difference. First operand 68 states and 85 transitions. Second operand 10 states. [2019-10-02 11:30:17,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:30:17,813 INFO L93 Difference]: Finished difference Result 445 states and 624 transitions. [2019-10-02 11:30:17,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-02 11:30:17,813 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2019-10-02 11:30:17,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:30:17,820 INFO L225 Difference]: With dead ends: 445 [2019-10-02 11:30:17,820 INFO L226 Difference]: Without dead ends: 392 [2019-10-02 11:30:17,822 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2019-10-02 11:30:17,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2019-10-02 11:30:17,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 82. [2019-10-02 11:30:17,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-10-02 11:30:17,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 103 transitions. [2019-10-02 11:30:17,844 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 103 transitions. Word has length 37 [2019-10-02 11:30:17,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:30:17,844 INFO L475 AbstractCegarLoop]: Abstraction has 82 states and 103 transitions. [2019-10-02 11:30:17,845 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-02 11:30:17,845 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 103 transitions. [2019-10-02 11:30:17,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-02 11:30:17,846 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:30:17,846 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 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] [2019-10-02 11:30:17,847 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:30:17,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:30:17,847 INFO L82 PathProgramCache]: Analyzing trace with hash -978671484, now seen corresponding path program 3 times [2019-10-02 11:30:17,847 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:30:17,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:30:17,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:17,849 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 11:30:17,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:30:17,981 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-02 11:30:17,981 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 11:30:17,981 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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) [2019-10-02 11:30:18,008 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 11:30:18,043 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-02 11:30:18,044 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 11:30:18,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-02 11:30:18,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:30:18,201 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-10-02 11:30:18,202 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-02 11:30:18,205 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-02 11:30:18,205 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-02 11:30:18,206 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-10-02 11:30:18,235 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-02 11:30:18,239 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 11:30:18,240 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2019-10-02 11:30:18,240 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-02 11:30:18,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-02 11:30:18,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2019-10-02 11:30:18,241 INFO L87 Difference]: Start difference. First operand 82 states and 103 transitions. Second operand 15 states. [2019-10-02 11:30:18,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:30:18,892 INFO L93 Difference]: Finished difference Result 467 states and 621 transitions. [2019-10-02 11:30:18,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-02 11:30:18,892 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 42 [2019-10-02 11:30:18,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:30:18,895 INFO L225 Difference]: With dead ends: 467 [2019-10-02 11:30:18,895 INFO L226 Difference]: Without dead ends: 397 [2019-10-02 11:30:18,896 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2019-10-02 11:30:18,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2019-10-02 11:30:18,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 82. [2019-10-02 11:30:18,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-10-02 11:30:18,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 102 transitions. [2019-10-02 11:30:18,912 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 102 transitions. Word has length 42 [2019-10-02 11:30:18,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:30:18,912 INFO L475 AbstractCegarLoop]: Abstraction has 82 states and 102 transitions. [2019-10-02 11:30:18,912 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-02 11:30:18,912 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 102 transitions. [2019-10-02 11:30:18,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-02 11:30:18,914 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:30:18,914 INFO L411 BasicCegarLoop]: trace histogram [6, 6, 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] [2019-10-02 11:30:18,914 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:30:18,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:30:18,915 INFO L82 PathProgramCache]: Analyzing trace with hash -124017128, now seen corresponding path program 1 times [2019-10-02 11:30:18,915 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:30:18,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:30:18,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:18,917 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 11:30:18,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:30:19,066 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-02 11:30:19,066 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 11:30:19,067 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 11:30:19,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:30:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:30:19,134 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-02 11:30:19,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:30:19,272 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2019-10-02 11:30:19,272 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-02 11:30:19,275 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-02 11:30:19,275 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-02 11:30:19,276 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2019-10-02 11:30:19,294 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (7)] Exception during sending of exit command (exit): Stream closed [2019-10-02 11:30:19,299 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 11:30:19,299 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-10-02 11:30:19,299 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-02 11:30:19,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-02 11:30:19,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-02 11:30:19,300 INFO L87 Difference]: Start difference. First operand 82 states and 102 transitions. Second operand 16 states. [2019-10-02 11:30:20,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:30:20,106 INFO L93 Difference]: Finished difference Result 514 states and 685 transitions. [2019-10-02 11:30:20,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-02 11:30:20,107 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2019-10-02 11:30:20,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:30:20,109 INFO L225 Difference]: With dead ends: 514 [2019-10-02 11:30:20,110 INFO L226 Difference]: Without dead ends: 451 [2019-10-02 11:30:20,111 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=150, Invalid=720, Unknown=0, NotChecked=0, Total=870 [2019-10-02 11:30:20,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2019-10-02 11:30:20,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 86. [2019-10-02 11:30:20,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-10-02 11:30:20,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 106 transitions. [2019-10-02 11:30:20,125 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 106 transitions. Word has length 45 [2019-10-02 11:30:20,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:30:20,126 INFO L475 AbstractCegarLoop]: Abstraction has 86 states and 106 transitions. [2019-10-02 11:30:20,126 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-02 11:30:20,126 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 106 transitions. [2019-10-02 11:30:20,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-02 11:30:20,128 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:30:20,128 INFO L411 BasicCegarLoop]: trace histogram [7, 7, 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] [2019-10-02 11:30:20,128 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:30:20,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:30:20,129 INFO L82 PathProgramCache]: Analyzing trace with hash 767730701, now seen corresponding path program 1 times [2019-10-02 11:30:20,129 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:30:20,129 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:30:20,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:20,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:30:20,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:30:20,261 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-02 11:30:20,261 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 11:30:20,262 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-10-02 11:30:20,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 11:30:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:30:20,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 18 conjunts are in the unsatisfiable core [2019-10-02 11:30:20,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:30:20,403 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 2 proven. 49 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-02 11:30:20,408 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 11:30:20,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2019-10-02 11:30:20,409 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-02 11:30:20,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-02 11:30:20,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2019-10-02 11:30:20,410 INFO L87 Difference]: Start difference. First operand 86 states and 106 transitions. Second operand 14 states. [2019-10-02 11:30:22,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:30:22,357 INFO L93 Difference]: Finished difference Result 751 states and 1048 transitions. [2019-10-02 11:30:22,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-10-02 11:30:22,357 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2019-10-02 11:30:22,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:30:22,362 INFO L225 Difference]: With dead ends: 751 [2019-10-02 11:30:22,363 INFO L226 Difference]: Without dead ends: 686 [2019-10-02 11:30:22,367 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=216, Invalid=1854, Unknown=0, NotChecked=0, Total=2070 [2019-10-02 11:30:22,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2019-10-02 11:30:22,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 100. [2019-10-02 11:30:22,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-10-02 11:30:22,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 124 transitions. [2019-10-02 11:30:22,398 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 124 transitions. Word has length 48 [2019-10-02 11:30:22,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:30:22,400 INFO L475 AbstractCegarLoop]: Abstraction has 100 states and 124 transitions. [2019-10-02 11:30:22,400 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-02 11:30:22,400 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 124 transitions. [2019-10-02 11:30:22,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-02 11:30:22,407 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:30:22,407 INFO L411 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:30:22,407 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:30:22,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:30:22,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1548703795, now seen corresponding path program 2 times [2019-10-02 11:30:22,408 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:30:22,408 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:30:22,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:22,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:30:22,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:30:22,576 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-02 11:30:22,576 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 11:30:22,577 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-10-02 11:30:22,603 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 11:30:22,642 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-02 11:30:22,642 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 11:30:22,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjunts are in the unsatisfiable core [2019-10-02 11:30:22,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:30:22,742 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 74 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-02 11:30:22,745 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 11:30:22,746 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 16 [2019-10-02 11:30:22,746 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-02 11:30:22,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-02 11:30:22,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2019-10-02 11:30:22,747 INFO L87 Difference]: Start difference. First operand 100 states and 124 transitions. Second operand 16 states. [2019-10-02 11:30:25,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:30:25,753 INFO L93 Difference]: Finished difference Result 958 states and 1330 transitions. [2019-10-02 11:30:25,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2019-10-02 11:30:25,753 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2019-10-02 11:30:25,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:30:25,759 INFO L225 Difference]: With dead ends: 958 [2019-10-02 11:30:25,760 INFO L226 Difference]: Without dead ends: 881 [2019-10-02 11:30:25,762 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 997 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=297, Invalid=3363, Unknown=0, NotChecked=0, Total=3660 [2019-10-02 11:30:25,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2019-10-02 11:30:25,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 114. [2019-10-02 11:30:25,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2019-10-02 11:30:25,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 142 transitions. [2019-10-02 11:30:25,780 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 142 transitions. Word has length 53 [2019-10-02 11:30:25,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:30:25,780 INFO L475 AbstractCegarLoop]: Abstraction has 114 states and 142 transitions. [2019-10-02 11:30:25,781 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-02 11:30:25,781 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 142 transitions. [2019-10-02 11:30:25,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-02 11:30:25,782 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:30:25,782 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:30:25,782 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:30:25,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:30:25,782 INFO L82 PathProgramCache]: Analyzing trace with hash 417827089, now seen corresponding path program 3 times [2019-10-02 11:30:25,783 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:30:25,783 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:30:25,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:25,784 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 11:30:25,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:30:25,929 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-02 11:30:25,929 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 11:30:25,929 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 11:30:25,956 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-10-02 11:30:25,993 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-02 11:30:25,993 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 11:30:25,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 25 conjunts are in the unsatisfiable core [2019-10-02 11:30:25,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:30:26,148 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2019-10-02 11:30:26,151 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 11:30:26,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2019-10-02 11:30:26,152 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-02 11:30:26,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-02 11:30:26,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-10-02 11:30:26,153 INFO L87 Difference]: Start difference. First operand 114 states and 142 transitions. Second operand 19 states. [2019-10-02 11:30:27,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:30:27,922 INFO L93 Difference]: Finished difference Result 1437 states and 1917 transitions. [2019-10-02 11:30:27,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-10-02 11:30:27,925 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2019-10-02 11:30:27,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:30:27,932 INFO L225 Difference]: With dead ends: 1437 [2019-10-02 11:30:27,932 INFO L226 Difference]: Without dead ends: 1348 [2019-10-02 11:30:27,933 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=201, Invalid=1131, Unknown=0, NotChecked=0, Total=1332 [2019-10-02 11:30:27,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2019-10-02 11:30:27,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 154. [2019-10-02 11:30:27,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2019-10-02 11:30:27,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 194 transitions. [2019-10-02 11:30:27,963 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 194 transitions. Word has length 58 [2019-10-02 11:30:27,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:30:27,963 INFO L475 AbstractCegarLoop]: Abstraction has 154 states and 194 transitions. [2019-10-02 11:30:27,963 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-02 11:30:27,963 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 194 transitions. [2019-10-02 11:30:27,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-02 11:30:27,964 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:30:27,964 INFO L411 BasicCegarLoop]: trace histogram [10, 10, 5, 5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:30:27,964 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:30:27,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:30:27,965 INFO L82 PathProgramCache]: Analyzing trace with hash -583840968, now seen corresponding path program 4 times [2019-10-02 11:30:27,965 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:30:27,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:30:27,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:27,966 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 11:30:27,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:30:28,082 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 2 proven. 35 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2019-10-02 11:30:28,082 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 11:30:28,083 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 11:30:28,108 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-10-02 11:30:28,151 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-02 11:30:28,152 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 11:30:28,153 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 26 conjunts are in the unsatisfiable core [2019-10-02 11:30:28,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:30:28,253 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 2 proven. 115 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-02 11:30:28,257 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 11:30:28,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14] total 15 [2019-10-02 11:30:28,257 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-02 11:30:28,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-02 11:30:28,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2019-10-02 11:30:28,258 INFO L87 Difference]: Start difference. First operand 154 states and 194 transitions. Second operand 15 states. [2019-10-02 11:30:30,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:30:30,638 INFO L93 Difference]: Finished difference Result 846 states and 1161 transitions. [2019-10-02 11:30:30,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-10-02 11:30:30,639 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 62 [2019-10-02 11:30:30,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:30:30,643 INFO L225 Difference]: With dead ends: 846 [2019-10-02 11:30:30,643 INFO L226 Difference]: Without dead ends: 759 [2019-10-02 11:30:30,644 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=213, Invalid=2337, Unknown=0, NotChecked=0, Total=2550 [2019-10-02 11:30:30,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2019-10-02 11:30:30,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 172. [2019-10-02 11:30:30,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2019-10-02 11:30:30,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 218 transitions. [2019-10-02 11:30:30,674 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 218 transitions. Word has length 62 [2019-10-02 11:30:30,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:30:30,674 INFO L475 AbstractCegarLoop]: Abstraction has 172 states and 218 transitions. [2019-10-02 11:30:30,675 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-02 11:30:30,675 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 218 transitions. [2019-10-02 11:30:30,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-10-02 11:30:30,676 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:30:30,676 INFO L411 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:30:30,676 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:30:30,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:30:30,677 INFO L82 PathProgramCache]: Analyzing trace with hash -308273692, now seen corresponding path program 5 times [2019-10-02 11:30:30,677 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:30:30,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:30:30,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:30,678 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 11:30:30,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:30:30,819 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2019-10-02 11:30:30,819 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 11:30:30,820 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 11:30:30,867 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-10-02 11:30:33,358 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2019-10-02 11:30:33,359 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 11:30:33,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-02 11:30:33,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:30:33,400 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2019-10-02 11:30:33,406 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 11:30:33,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-10-02 11:30:33,406 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-02 11:30:33,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-02 11:30:33,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-10-02 11:30:33,407 INFO L87 Difference]: Start difference. First operand 172 states and 218 transitions. Second operand 10 states. [2019-10-02 11:30:33,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:30:33,597 INFO L93 Difference]: Finished difference Result 301 states and 395 transitions. [2019-10-02 11:30:33,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-02 11:30:33,598 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 65 [2019-10-02 11:30:33,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:30:33,599 INFO L225 Difference]: With dead ends: 301 [2019-10-02 11:30:33,600 INFO L226 Difference]: Without dead ends: 202 [2019-10-02 11:30:33,602 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-10-02 11:30:33,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2019-10-02 11:30:33,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 190. [2019-10-02 11:30:33,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2019-10-02 11:30:33,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 242 transitions. [2019-10-02 11:30:33,636 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 242 transitions. Word has length 65 [2019-10-02 11:30:33,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:30:33,637 INFO L475 AbstractCegarLoop]: Abstraction has 190 states and 242 transitions. [2019-10-02 11:30:33,637 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-02 11:30:33,637 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 242 transitions. [2019-10-02 11:30:33,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-10-02 11:30:33,638 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:30:33,638 INFO L411 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:30:33,638 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:30:33,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:30:33,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1433942968, now seen corresponding path program 6 times [2019-10-02 11:30:33,639 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:30:33,639 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:30:33,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:33,641 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 11:30:33,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:30:33,832 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 70 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2019-10-02 11:30:33,833 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 11:30:33,833 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 11:30:33,862 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-10-02 11:30:33,905 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2019-10-02 11:30:33,906 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 11:30:33,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2019-10-02 11:30:33,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:30:34,045 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 11:30:34,162 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-02 11:30:34,164 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-02 11:30:34,164 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2019-10-02 11:30:34,165 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-02 11:30:34,174 INFO L567 ElimStorePlain]: treesize reduction 5, result has 64.3 percent of original size [2019-10-02 11:30:34,175 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-02 11:30:34,176 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:3 [2019-10-02 11:30:34,196 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (13)] Exception during sending of exit command (exit): Broken pipe [2019-10-02 11:30:34,203 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 11:30:34,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2019-10-02 11:30:34,204 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-02 11:30:34,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-02 11:30:34,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-10-02 11:30:34,205 INFO L87 Difference]: Start difference. First operand 190 states and 242 transitions. Second operand 17 states. [2019-10-02 11:30:35,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:30:35,425 INFO L93 Difference]: Finished difference Result 447 states and 595 transitions. [2019-10-02 11:30:35,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-10-02 11:30:35,425 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 68 [2019-10-02 11:30:35,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:30:35,427 INFO L225 Difference]: With dead ends: 447 [2019-10-02 11:30:35,427 INFO L226 Difference]: Without dead ends: 333 [2019-10-02 11:30:35,428 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=192, Invalid=998, Unknown=0, NotChecked=0, Total=1190 [2019-10-02 11:30:35,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2019-10-02 11:30:35,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 209. [2019-10-02 11:30:35,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2019-10-02 11:30:35,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 267 transitions. [2019-10-02 11:30:35,464 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 267 transitions. Word has length 68 [2019-10-02 11:30:35,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:30:35,464 INFO L475 AbstractCegarLoop]: Abstraction has 209 states and 267 transitions. [2019-10-02 11:30:35,464 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-02 11:30:35,464 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 267 transitions. [2019-10-02 11:30:35,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-02 11:30:35,465 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:30:35,466 INFO L411 BasicCegarLoop]: trace histogram [10, 10, 8, 8, 8, 8, 8, 8, 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] [2019-10-02 11:30:35,466 INFO L418 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:30:35,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:30:35,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1283842895, now seen corresponding path program 1 times [2019-10-02 11:30:35,466 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:30:35,466 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:30:35,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:35,468 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 11:30:35,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:30:35,638 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 2 proven. 92 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2019-10-02 11:30:35,638 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 11:30:35,638 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 11:30:35,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:30:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:30:35,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 38 conjunts are in the unsatisfiable core [2019-10-02 11:30:35,737 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:30:35,876 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 2 proven. 190 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (14)] Exception during sending of exit command (exit): Broken pipe [2019-10-02 11:30:35,880 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 11:30:35,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 20] total 21 [2019-10-02 11:30:35,881 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-10-02 11:30:35,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-10-02 11:30:35,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2019-10-02 11:30:35,881 INFO L87 Difference]: Start difference. First operand 209 states and 267 transitions. Second operand 21 states. [2019-10-02 11:30:41,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:30:41,720 INFO L93 Difference]: Finished difference Result 1446 states and 1953 transitions. [2019-10-02 11:30:41,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2019-10-02 11:30:41,720 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 96 [2019-10-02 11:30:41,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:30:41,726 INFO L225 Difference]: With dead ends: 1446 [2019-10-02 11:30:41,726 INFO L226 Difference]: Without dead ends: 1317 [2019-10-02 11:30:41,730 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 167 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3252 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=453, Invalid=9849, Unknown=0, NotChecked=0, Total=10302 [2019-10-02 11:30:41,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2019-10-02 11:30:41,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 215. [2019-10-02 11:30:41,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2019-10-02 11:30:41,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 271 transitions. [2019-10-02 11:30:41,779 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 271 transitions. Word has length 96 [2019-10-02 11:30:41,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:30:41,780 INFO L475 AbstractCegarLoop]: Abstraction has 215 states and 271 transitions. [2019-10-02 11:30:41,780 INFO L476 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-10-02 11:30:41,780 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 271 transitions. [2019-10-02 11:30:41,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-02 11:30:41,781 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:30:41,781 INFO L411 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 8, 8, 8, 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] [2019-10-02 11:30:41,782 INFO L418 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:30:41,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:30:41,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1439630739, now seen corresponding path program 2 times [2019-10-02 11:30:41,782 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:30:41,782 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:30:41,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:41,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:30:41,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:30:42,063 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 2 proven. 117 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2019-10-02 11:30:42,063 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 11:30:42,063 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 11:30:42,109 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-10-02 11:30:42,184 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-02 11:30:42,185 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 11:30:42,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 42 conjunts are in the unsatisfiable core [2019-10-02 11:30:42,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:30:42,415 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 2 proven. 217 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2019-10-02 11:30:42,420 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 11:30:42,420 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 22] total 23 [2019-10-02 11:30:42,421 INFO L454 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-02 11:30:42,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-02 11:30:42,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2019-10-02 11:30:42,422 INFO L87 Difference]: Start difference. First operand 215 states and 271 transitions. Second operand 23 states. [2019-10-02 11:30:49,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:30:49,976 INFO L93 Difference]: Finished difference Result 1574 states and 2102 transitions. [2019-10-02 11:30:49,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2019-10-02 11:30:49,976 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 99 [2019-10-02 11:30:49,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:30:49,983 INFO L225 Difference]: With dead ends: 1574 [2019-10-02 11:30:49,984 INFO L226 Difference]: Without dead ends: 1507 [2019-10-02 11:30:49,988 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 178 SyntacticMatches, 1 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4963 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=553, Invalid=14453, Unknown=0, NotChecked=0, Total=15006 [2019-10-02 11:30:49,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2019-10-02 11:30:50,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 221. [2019-10-02 11:30:50,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2019-10-02 11:30:50,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 279 transitions. [2019-10-02 11:30:50,037 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 279 transitions. Word has length 99 [2019-10-02 11:30:50,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:30:50,038 INFO L475 AbstractCegarLoop]: Abstraction has 221 states and 279 transitions. [2019-10-02 11:30:50,038 INFO L476 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-02 11:30:50,038 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 279 transitions. [2019-10-02 11:30:50,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-02 11:30:50,039 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:30:50,039 INFO L411 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 8, 8, 8, 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] [2019-10-02 11:30:50,039 INFO L418 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:30:50,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:30:50,040 INFO L82 PathProgramCache]: Analyzing trace with hash -215472497, now seen corresponding path program 3 times [2019-10-02 11:30:50,040 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:30:50,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:30:50,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:50,041 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 11:30:50,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:30:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:30:51,034 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 50 [2019-10-02 11:30:51,188 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 21 proven. 126 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2019-10-02 11:30:51,189 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 11:30:51,189 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 11:30:51,228 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-10-02 11:30:51,746 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2019-10-02 11:30:51,746 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 11:30:51,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 72 conjunts are in the unsatisfiable core [2019-10-02 11:30:51,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:30:51,768 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-10-02 11:30:51,769 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-02 11:30:51,779 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-02 11:30:51,780 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-02 11:30:51,780 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:27 [2019-10-02 11:30:51,813 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 11:30:51,822 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-02 11:30:51,831 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 54 [2019-10-02 11:30:51,831 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-02 11:30:51,835 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-02 11:30:51,835 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-02 11:30:51,861 INFO L567 ElimStorePlain]: treesize reduction 10, result has 79.2 percent of original size [2019-10-02 11:30:51,862 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-02 11:30:51,862 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:107, output treesize:27 [2019-10-02 11:30:51,903 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 11:30:51,915 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-02 11:30:51,916 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-02 11:30:51,923 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-02 11:30:51,924 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 54 [2019-10-02 11:30:51,925 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-02 11:30:51,949 INFO L567 ElimStorePlain]: treesize reduction 10, result has 79.2 percent of original size [2019-10-02 11:30:51,950 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-02 11:30:51,951 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:107, output treesize:27 [2019-10-02 11:30:51,988 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 11:30:51,998 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-02 11:30:51,998 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-02 11:30:52,001 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-02 11:30:52,002 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 54 [2019-10-02 11:30:52,003 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-02 11:30:52,035 INFO L567 ElimStorePlain]: treesize reduction 10, result has 79.2 percent of original size [2019-10-02 11:30:52,036 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-02 11:30:52,036 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:107, output treesize:27 [2019-10-02 11:30:52,075 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 11:30:52,084 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-02 11:30:52,092 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 49 [2019-10-02 11:30:52,093 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-02 11:30:52,096 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-02 11:30:52,096 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-02 11:30:52,125 INFO L567 ElimStorePlain]: treesize reduction 5, result has 88.4 percent of original size [2019-10-02 11:30:52,126 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-02 11:30:52,126 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:97, output treesize:27 [2019-10-02 11:30:52,164 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 11:30:52,185 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-02 11:30:52,199 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 49 [2019-10-02 11:30:52,200 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-02 11:30:52,203 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-02 11:30:52,204 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-02 11:30:52,226 INFO L567 ElimStorePlain]: treesize reduction 5, result has 88.4 percent of original size [2019-10-02 11:30:52,227 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-02 11:30:52,227 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:97, output treesize:27 [2019-10-02 11:30:52,269 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 11:30:52,278 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-02 11:30:52,288 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 49 [2019-10-02 11:30:52,288 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-02 11:30:52,294 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-02 11:30:52,295 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-02 11:30:52,317 INFO L567 ElimStorePlain]: treesize reduction 5, result has 88.4 percent of original size [2019-10-02 11:30:52,317 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-02 11:30:52,318 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:97, output treesize:27 [2019-10-02 11:30:52,364 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 11:30:52,375 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-02 11:30:52,380 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 49 [2019-10-02 11:30:52,381 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-02 11:30:52,388 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-02 11:30:52,388 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-02 11:30:52,412 INFO L567 ElimStorePlain]: treesize reduction 5, result has 88.4 percent of original size [2019-10-02 11:30:52,413 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-02 11:30:52,413 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:97, output treesize:27 [2019-10-02 11:30:52,458 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-02 11:30:52,460 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2019-10-02 11:30:52,460 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-02 11:30:52,474 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-02 11:30:52,475 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-02 11:30:52,475 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:37, output treesize:24 [2019-10-02 11:30:52,518 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 11:30:52,525 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-02 11:30:52,534 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 46 [2019-10-02 11:30:52,535 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-02 11:30:52,551 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-02 11:30:52,555 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 48 [2019-10-02 11:30:52,555 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-02 11:30:52,588 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-02 11:30:52,591 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-02 11:30:52,591 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:91, output treesize:24 [2019-10-02 11:30:52,592 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 11:30:52,599 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-02 11:30:52,607 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 48 [2019-10-02 11:30:52,608 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-02 11:30:52,613 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-02 11:30:52,618 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 46 [2019-10-02 11:30:52,619 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-02 11:30:52,654 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-02 11:30:52,657 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-02 11:30:52,657 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:91, output treesize:24 [2019-10-02 11:30:52,679 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-02 11:30:52,680 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2019-10-02 11:30:52,681 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-02 11:30:52,690 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-02 11:30:52,690 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-02 11:30:52,691 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2019-10-02 11:30:53,415 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 11:30:53,416 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 11:30:53,417 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 11:30:53,430 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-02 11:30:53,430 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-02 11:30:53,434 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-02 11:30:53,434 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-02 11:30:53,445 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-02 11:30:53,451 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-02 11:30:53,469 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-02 11:30:53,470 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 58 [2019-10-02 11:30:53,470 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 11:30:53,472 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-02 11:30:53,475 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-02 11:30:53,475 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-10-02 11:30:53,512 INFO L567 ElimStorePlain]: treesize reduction 10, result has 76.7 percent of original size [2019-10-02 11:30:53,512 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-02 11:30:53,512 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:363, output treesize:29 [2019-10-02 11:30:53,577 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 11:30:54,045 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 19 proven. 191 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2019-10-02 11:30:54,050 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 11:30:54,051 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 27] total 42 [2019-10-02 11:30:54,051 INFO L454 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-10-02 11:30:54,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-10-02 11:30:54,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1586, Unknown=0, NotChecked=0, Total=1722 [2019-10-02 11:30:54,052 INFO L87 Difference]: Start difference. First operand 221 states and 279 transitions. Second operand 42 states. [2019-10-02 11:30:56,914 WARN L191 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-10-02 11:30:57,896 WARN L191 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2019-10-02 11:30:58,365 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-10-02 11:30:58,703 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-10-02 11:31:01,916 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 56 [2019-10-02 11:31:02,541 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 48 [2019-10-02 11:31:03,481 WARN L191 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2019-10-02 11:31:04,195 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2019-10-02 11:31:06,777 WARN L191 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-10-02 11:31:07,227 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2019-10-02 11:31:07,628 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2019-10-02 11:31:09,395 WARN L191 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-10-02 11:31:09,868 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 54 [2019-10-02 11:31:10,249 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2019-10-02 11:31:10,737 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-10-02 11:31:11,150 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 58 [2019-10-02 11:31:11,456 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-10-02 11:31:11,953 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 55 [2019-10-02 11:31:12,474 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 62 [2019-10-02 11:31:12,992 WARN L191 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2019-10-02 11:31:13,466 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 58 [2019-10-02 11:31:13,932 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-10-02 11:31:15,118 WARN L191 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 52 [2019-10-02 11:31:18,668 WARN L191 SmtUtils]: Spent 2.49 s on a formula simplification. DAG size of input: 93 DAG size of output: 49 [2019-10-02 11:31:19,181 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2019-10-02 11:31:19,566 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-10-02 11:31:20,351 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2019-10-02 11:31:20,878 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2019-10-02 11:31:21,262 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2019-10-02 11:31:21,883 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-10-02 11:31:22,413 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-10-02 11:31:22,810 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-10-02 11:31:23,169 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2019-10-02 11:31:23,452 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2019-10-02 11:31:26,840 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 51 [2019-10-02 11:31:28,022 WARN L191 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-10-02 11:31:28,661 WARN L191 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2019-10-02 11:31:30,012 WARN L191 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2019-10-02 11:31:31,222 WARN L191 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2019-10-02 11:31:32,065 WARN L191 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2019-10-02 11:31:33,013 WARN L191 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-10-02 11:31:34,423 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-10-02 11:31:35,211 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-10-02 11:31:35,853 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-10-02 11:31:36,547 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-10-02 11:31:36,872 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 55 [2019-10-02 11:31:37,262 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-10-02 11:31:37,786 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 51 [2019-10-02 11:31:39,116 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 59 [2019-10-02 11:31:39,816 WARN L191 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-10-02 11:31:41,196 WARN L191 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-10-02 11:31:42,388 WARN L191 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 49 [2019-10-02 11:31:42,691 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2019-10-02 11:31:43,737 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2019-10-02 11:31:44,528 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 45 [2019-10-02 11:31:45,637 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-10-02 11:31:48,232 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-10-02 11:31:48,964 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2019-10-02 11:31:51,180 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2019-10-02 11:31:51,606 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-10-02 11:31:52,883 WARN L191 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-10-02 11:31:53,304 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2019-10-02 11:31:55,818 WARN L191 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-10-02 11:31:56,347 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2019-10-02 11:32:02,375 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2019-10-02 11:32:05,326 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2019-10-02 11:32:15,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:32:15,133 INFO L93 Difference]: Finished difference Result 1715 states and 2265 transitions. [2019-10-02 11:32:15,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 278 states. [2019-10-02 11:32:15,136 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 102 [2019-10-02 11:32:15,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:32:15,143 INFO L225 Difference]: With dead ends: 1715 [2019-10-02 11:32:15,143 INFO L226 Difference]: Without dead ends: 1676 [2019-10-02 11:32:15,158 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 87 SyntacticMatches, 2 SemanticMatches, 316 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39788 ImplicationChecksByTransitivity, 65.9s TimeCoverageRelationStatistics Valid=6609, Invalid=94197, Unknown=0, NotChecked=0, Total=100806 [2019-10-02 11:32:15,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2019-10-02 11:32:15,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 327. [2019-10-02 11:32:15,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2019-10-02 11:32:15,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 418 transitions. [2019-10-02 11:32:15,250 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 418 transitions. Word has length 102 [2019-10-02 11:32:15,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:32:15,251 INFO L475 AbstractCegarLoop]: Abstraction has 327 states and 418 transitions. [2019-10-02 11:32:15,251 INFO L476 AbstractCegarLoop]: Interpolant automaton has 42 states. [2019-10-02 11:32:15,251 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 418 transitions. [2019-10-02 11:32:15,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-02 11:32:15,256 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:32:15,257 INFO L411 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 8, 8, 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] [2019-10-02 11:32:15,257 INFO L418 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:32:15,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:32:15,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1629567861, now seen corresponding path program 1 times [2019-10-02 11:32:15,257 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:32:15,258 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:32:15,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:32:15,261 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 11:32:15,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:32:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:32:15,823 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2019-10-02 11:32:15,823 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 11:32:15,823 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 11:32:15,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:32:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:32:15,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 77 conjunts are in the unsatisfiable core [2019-10-02 11:32:15,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:32:16,835 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 11:32:16,836 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 11:32:16,836 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 11:32:19,073 WARN L191 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2019-10-02 11:32:19,434 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2019-10-02 11:32:20,260 WARN L191 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2019-10-02 11:32:24,994 WARN L191 SmtUtils]: Spent 4.53 s on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2019-10-02 11:32:26,664 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 11:32:26,665 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 11:32:26,666 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 11:32:26,667 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 11:32:26,668 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 11:32:26,677 INFO L392 ElimStorePlain]: Different costs {10=[|#memory_int|], 18=[v_prenex_9]} [2019-10-02 11:32:26,726 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-02 11:32:26,727 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 106 [2019-10-02 11:32:26,728 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-02 11:32:26,809 INFO L567 ElimStorePlain]: treesize reduction 136, result has 40.6 percent of original size [2019-10-02 11:32:26,864 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-02 11:32:26,865 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 112 [2019-10-02 11:32:26,867 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-02 11:32:26,906 INFO L567 ElimStorePlain]: treesize reduction 52, result has 35.8 percent of original size [2019-10-02 11:32:26,914 INFO L496 ElimStorePlain]: Start of recursive call 1: 10 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-02 11:32:26,914 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 12 variables, input treesize:241, output treesize:3 [2019-10-02 11:32:27,033 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 64 proven. 260 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-02 11:32:27,036 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 11:32:27,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 33] total 53 [2019-10-02 11:32:27,037 INFO L454 AbstractCegarLoop]: Interpolant automaton has 53 states [2019-10-02 11:32:27,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2019-10-02 11:32:27,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2598, Unknown=0, NotChecked=0, Total=2756 [2019-10-02 11:32:27,038 INFO L87 Difference]: Start difference. First operand 327 states and 418 transitions. Second operand 53 states. [2019-10-02 11:32:33,315 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2019-10-02 11:32:34,060 WARN L191 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2019-10-02 11:32:36,569 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2019-10-02 11:32:36,789 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2019-10-02 11:32:38,159 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-10-02 11:32:38,459 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-10-02 11:32:40,979 WARN L191 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-10-02 11:32:42,220 WARN L191 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2019-10-02 11:32:44,499 WARN L191 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-10-02 11:32:45,652 WARN L191 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-10-02 11:32:48,138 WARN L191 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-10-02 11:32:48,899 WARN L191 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-10-02 11:32:50,900 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-10-02 11:32:51,406 WARN L191 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-10-02 11:32:58,359 WARN L191 SmtUtils]: Spent 6.53 s on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-10-02 11:32:58,946 WARN L191 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-10-02 11:32:59,178 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:32:59,889 WARN L191 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-10-02 11:33:03,987 WARN L191 SmtUtils]: Spent 3.97 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-10-02 11:33:05,147 WARN L191 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-10-02 11:33:06,385 WARN L191 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-10-02 11:33:10,412 WARN L191 SmtUtils]: Spent 3.88 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-10-02 11:33:10,787 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-10-02 11:33:13,119 WARN L191 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-10-02 11:33:13,453 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-10-02 11:33:14,107 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-10-02 11:33:15,250 WARN L191 SmtUtils]: Spent 895.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-10-02 11:33:16,712 WARN L191 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-10-02 11:33:20,725 WARN L191 SmtUtils]: Spent 3.85 s on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2019-10-02 11:33:21,404 WARN L191 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-10-02 11:33:23,543 WARN L191 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-10-02 11:33:26,238 WARN L191 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-10-02 11:33:27,668 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-10-02 11:33:28,552 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-10-02 11:33:40,435 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-10-02 11:33:41,777 WARN L191 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-10-02 11:33:42,338 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:33:42,738 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:33:43,220 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:33:44,111 WARN L191 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:33:44,565 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:33:53,046 WARN L191 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:33:54,094 WARN L191 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:33:54,529 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:33:58,371 WARN L191 SmtUtils]: Spent 3.51 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:33:58,878 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:33:59,431 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-10-02 11:34:07,645 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:34:08,796 WARN L191 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-10-02 11:34:10,432 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:34:10,910 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:34:11,540 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:34:13,525 WARN L191 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-10-02 11:34:23,427 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:34:26,802 WARN L191 SmtUtils]: Spent 2.97 s on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-10-02 11:34:28,630 WARN L191 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:34:29,648 WARN L191 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:34:33,432 WARN L191 SmtUtils]: Spent 3.38 s on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-10-02 11:34:47,107 WARN L191 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:34:47,865 WARN L191 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-10-02 11:34:49,038 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-10-02 11:35:02,021 WARN L191 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:35:02,669 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-10-02 11:35:08,839 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2019-10-02 11:35:20,618 WARN L191 SmtUtils]: Spent 8.08 s on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2019-10-02 11:35:28,734 WARN L191 SmtUtils]: Spent 8.06 s on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2019-10-02 11:35:36,957 WARN L191 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-10-02 11:35:45,179 WARN L191 SmtUtils]: Spent 8.09 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-10-02 11:35:53,342 WARN L191 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2019-10-02 11:36:01,566 WARN L191 SmtUtils]: Spent 8.09 s on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2019-10-02 11:36:09,733 WARN L191 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-10-02 11:36:17,962 WARN L191 SmtUtils]: Spent 8.09 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-10-02 11:36:26,132 WARN L191 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-10-02 11:36:34,360 WARN L191 SmtUtils]: Spent 8.09 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-10-02 11:36:42,525 WARN L191 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-10-02 11:36:50,755 WARN L191 SmtUtils]: Spent 8.09 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-10-02 11:37:01,030 WARN L191 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-10-02 11:37:09,303 WARN L191 SmtUtils]: Spent 8.10 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-10-02 11:37:17,469 WARN L191 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-10-02 11:37:25,627 WARN L191 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2019-10-02 11:37:36,934 WARN L191 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2019-10-02 11:37:42,496 WARN L191 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2019-10-02 11:37:42,774 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-10-02 11:37:43,672 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2019-10-02 11:37:45,921 WARN L191 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-10-02 11:37:46,450 WARN L191 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-10-02 11:37:47,548 WARN L191 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-10-02 11:37:47,826 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-10-02 11:37:48,417 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-10-02 11:37:48,825 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2019-10-02 11:37:49,128 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-10-02 11:37:49,907 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-10-02 11:37:50,677 WARN L191 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-10-02 11:37:51,894 WARN L191 SmtUtils]: Spent 937.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-10-02 11:37:54,351 WARN L191 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-10-02 11:37:54,715 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2019-10-02 11:37:55,639 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-10-02 11:37:56,109 WARN L191 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-10-02 11:37:56,860 WARN L191 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-10-02 11:37:58,318 WARN L191 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-10-02 11:37:59,280 WARN L191 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-10-02 11:37:59,994 WARN L191 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-10-02 11:38:00,435 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-10-02 11:38:01,125 WARN L191 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-10-02 11:38:08,561 WARN L191 SmtUtils]: Spent 4.24 s on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2019-10-02 11:38:11,649 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2019-10-02 11:38:16,518 WARN L191 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-10-02 11:38:18,814 WARN L191 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:38:19,014 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-10-02 11:38:19,412 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-10-02 11:38:21,919 WARN L191 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-10-02 11:38:22,185 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-10-02 11:38:25,026 WARN L191 SmtUtils]: Spent 2.49 s on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-10-02 11:38:25,855 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2019-10-02 11:38:26,277 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:38:27,745 WARN L191 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:38:27,958 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:38:28,540 WARN L191 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:38:28,887 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-10-02 11:38:29,710 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-10-02 11:38:30,475 WARN L191 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-10-02 11:38:30,892 WARN L191 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-10-02 11:38:31,093 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-10-02 11:38:31,290 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-10-02 11:38:32,215 WARN L191 SmtUtils]: Spent 831.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:38:33,021 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-10-02 11:38:35,247 WARN L191 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:38:35,448 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-10-02 11:38:37,376 WARN L191 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-10-02 11:38:38,304 WARN L191 SmtUtils]: Spent 832.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:38:39,810 WARN L191 SmtUtils]: Spent 973.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-10-02 11:38:42,205 WARN L191 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-10-02 11:38:43,640 WARN L191 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-10-02 11:38:43,854 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:38:44,072 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-10-02 11:38:44,628 WARN L191 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:38:46,912 WARN L191 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-10-02 11:38:47,321 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:38:55,417 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-10-02 11:38:55,604 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-10-02 11:38:55,786 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-10-02 11:38:55,981 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-10-02 11:38:56,364 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-10-02 11:38:58,572 WARN L191 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-10-02 11:39:01,134 WARN L191 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-10-02 11:39:01,801 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2019-10-02 11:39:02,039 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-10-02 11:39:02,241 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-10-02 11:39:02,866 WARN L191 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-10-02 11:39:03,050 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-10-02 11:39:03,675 WARN L191 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-10-02 11:39:07,915 WARN L191 SmtUtils]: Spent 4.16 s on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-10-02 11:39:09,141 WARN L191 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-10-02 11:39:09,757 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-10-02 11:39:12,993 WARN L191 SmtUtils]: Spent 3.16 s on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-10-02 11:39:17,468 WARN L191 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-10-02 11:39:17,825 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-10-02 11:39:18,581 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-10-02 11:39:19,873 WARN L191 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-10-02 11:39:21,829 WARN L191 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-10-02 11:39:22,036 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-10-02 11:39:23,778 WARN L191 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-10-02 11:39:24,975 WARN L191 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-10-02 11:39:27,052 WARN L191 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-10-02 11:39:27,259 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-10-02 11:39:27,455 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-10-02 11:39:27,672 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-10-02 11:39:27,890 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-10-02 11:39:30,737 WARN L191 SmtUtils]: Spent 2.51 s on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-10-02 11:39:31,701 WARN L191 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-10-02 11:39:31,895 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-10-02 11:39:32,183 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-10-02 11:39:32,642 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-10-02 11:39:34,989 WARN L191 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-10-02 11:39:36,047 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2019-10-02 11:39:36,314 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-10-02 11:39:36,586 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-10-02 11:39:36,858 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-10-02 11:39:37,121 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-10-02 11:39:37,388 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-10-02 11:39:37,660 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-10-02 11:39:37,934 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-10-02 11:39:38,191 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2019-10-02 11:39:38,754 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2019-10-02 11:39:39,052 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-10-02 11:39:39,325 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-10-02 11:39:39,683 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-10-02 11:39:39,950 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-10-02 11:39:40,213 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-10-02 11:39:40,486 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-10-02 11:39:40,762 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-10-02 11:39:41,036 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-10-02 11:39:41,573 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-10-02 11:39:41,876 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2019-10-02 11:39:42,144 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-10-02 11:39:42,423 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-10-02 11:39:42,697 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-10-02 11:39:42,967 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-10-02 11:39:43,238 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-10-02 11:39:43,512 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-10-02 11:39:44,021 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-10-02 11:39:44,328 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2019-10-02 11:39:44,692 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-10-02 11:39:44,971 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-10-02 11:39:45,241 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-10-02 11:39:45,512 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-10-02 11:39:45,794 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-10-02 11:39:46,249 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-10-02 11:39:46,563 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2019-10-02 11:39:46,845 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-10-02 11:39:47,126 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-10-02 11:39:47,400 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-10-02 11:39:47,670 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-10-02 11:39:48,095 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-10-02 11:39:48,404 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2019-10-02 11:39:48,728 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-10-02 11:39:48,992 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-10-02 11:39:49,268 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-10-02 11:39:49,735 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-10-02 11:39:50,032 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2019-10-02 11:39:50,306 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-10-02 11:39:50,592 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-10-02 11:39:54,204 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2019-10-02 11:39:59,933 WARN L191 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2019-10-02 11:40:05,580 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2019-10-02 11:40:15,278 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-10-02 11:40:22,441 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2019-10-02 11:40:48,811 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2019-10-02 11:41:08,471 WARN L191 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2019-10-02 11:41:16,583 WARN L191 SmtUtils]: Spent 8.06 s on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2019-10-02 11:41:24,750 WARN L191 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-10-02 11:41:32,961 WARN L191 SmtUtils]: Spent 8.09 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-10-02 11:41:41,122 WARN L191 SmtUtils]: Spent 8.06 s on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2019-10-02 11:41:49,334 WARN L191 SmtUtils]: Spent 8.08 s on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2019-10-02 11:41:57,507 WARN L191 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-10-02 11:42:05,716 WARN L191 SmtUtils]: Spent 8.08 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-10-02 11:42:13,880 WARN L191 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-10-02 11:42:22,094 WARN L191 SmtUtils]: Spent 8.09 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-10-02 11:42:30,278 WARN L191 SmtUtils]: Spent 8.06 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-10-02 11:42:38,486 WARN L191 SmtUtils]: Spent 8.08 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-10-02 11:42:46,687 WARN L191 SmtUtils]: Spent 8.11 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-10-02 11:42:54,902 WARN L191 SmtUtils]: Spent 8.09 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-10-02 11:43:03,063 WARN L191 SmtUtils]: Spent 8.06 s on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2019-10-02 11:43:11,228 WARN L191 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-10-02 11:43:30,057 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2019-10-02 11:43:30,529 WARN L191 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-10-02 11:43:30,840 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2019-10-02 11:43:32,826 WARN L191 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-10-02 11:43:36,153 WARN L191 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2019-10-02 11:43:38,035 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2019-10-02 11:43:40,448 WARN L191 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-10-02 11:43:41,072 WARN L191 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-10-02 11:43:41,485 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-10-02 11:43:41,856 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2019-10-02 11:43:42,546 WARN L191 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-10-02 11:43:46,411 WARN L191 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-10-02 11:43:46,667 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-10-02 11:43:49,562 WARN L191 SmtUtils]: Spent 2.47 s on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-10-02 11:43:49,978 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-10-02 11:43:50,368 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-10-02 11:43:50,965 WARN L191 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-10-02 11:43:51,624 WARN L191 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-10-02 11:43:52,116 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-10-02 11:43:55,470 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55