/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/product-lines/email_spec27_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:29:29,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:29:29,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:29:29,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:29:29,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:29:29,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:29:29,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:29:29,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:29:29,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:29:29,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:29:29,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:29:29,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:29:29,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:29:29,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:29:29,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:29:29,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:29:29,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:29:29,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:29:29,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:29:29,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:29:29,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:29:29,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:29:29,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:29:29,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:29:29,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:29:29,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:29:29,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:29:29,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:29:29,522 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:29:29,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:29:29,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:29:29,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:29:29,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:29:29,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:29:29,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:29:29,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:29:29,527 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:29:29,559 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:29:29,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:29:29,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:29:29,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:29:29,565 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:29:29,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:29:29,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:29:29,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:29:29,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:29:29,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:29:29,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:29:29,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:29:29,568 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:29:29,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:29:29,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:29:29,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:29:29,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:29:29,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:29:29,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:29:29,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:29:29,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:29:29,570 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:29:29,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:29:29,571 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:29:29,571 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:29:29,572 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:29:29,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:29:29,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:29:29,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:29:29,979 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:29:29,980 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:29:29,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec27_product31.cil.c [2020-12-22 06:29:30,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf6757942/6984a580b31042a28d5ab44755829d2d/FLAGc64707830 [2020-12-22 06:29:30,818 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:29:30,818 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product31.cil.c [2020-12-22 06:29:30,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf6757942/6984a580b31042a28d5ab44755829d2d/FLAGc64707830 [2020-12-22 06:29:31,019 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf6757942/6984a580b31042a28d5ab44755829d2d [2020-12-22 06:29:31,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:29:31,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:29:31,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:29:31,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:29:31,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:29:31,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:29:31" (1/1) ... [2020-12-22 06:29:31,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570ef8ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:29:31, skipping insertion in model container [2020-12-22 06:29:31,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:29:31" (1/1) ... [2020-12-22 06:29:31,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:29:31,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:29:31,857 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product31.cil.c[61027,61040] [2020-12-22 06:29:31,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:29:31,890 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:29:31,990 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product31.cil.c[61027,61040] [2020-12-22 06:29:32,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:29:32,121 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:29:32,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:29:32 WrapperNode [2020-12-22 06:29:32,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:29:32,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:29:32,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:29:32,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:29:32,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:29:32" (1/1) ... [2020-12-22 06:29:32,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:29:32" (1/1) ... [2020-12-22 06:29:32,324 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:29:32,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:29:32,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:29:32,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:29:32,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:29:32" (1/1) ... [2020-12-22 06:29:32,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:29:32" (1/1) ... [2020-12-22 06:29:32,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:29:32" (1/1) ... [2020-12-22 06:29:32,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:29:32" (1/1) ... [2020-12-22 06:29:32,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:29:32" (1/1) ... [2020-12-22 06:29:32,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:29:32" (1/1) ... [2020-12-22 06:29:32,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:29:32" (1/1) ... [2020-12-22 06:29:32,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:29:32,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:29:32,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:29:32,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:29:32,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:29:32" (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 [2020-12-22 06:29:32,585 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-12-22 06:29:32,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:29:32,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:29:32,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:29:32,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:29:35,498 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:29:35,498 INFO L299 CfgBuilder]: Removed 379 assume(true) statements. [2020-12-22 06:29:35,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:29:35 BoogieIcfgContainer [2020-12-22 06:29:35,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:29:35,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:29:35,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:29:35,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:29:35,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:29:31" (1/3) ... [2020-12-22 06:29:35,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@527d40d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:29:35, skipping insertion in model container [2020-12-22 06:29:35,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:29:32" (2/3) ... [2020-12-22 06:29:35,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@527d40d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:29:35, skipping insertion in model container [2020-12-22 06:29:35,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:29:35" (3/3) ... [2020-12-22 06:29:35,516 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product31.cil.c [2020-12-22 06:29:35,524 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:29:35,529 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 06:29:35,548 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 06:29:35,581 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:29:35,581 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:29:35,581 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:29:35,581 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:29:35,581 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:29:35,582 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:29:35,582 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:29:35,582 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:29:35,610 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states. [2020-12-22 06:29:35,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 06:29:35,630 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:35,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:35,631 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:35,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:35,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1232814721, now seen corresponding path program 1 times [2020-12-22 06:29:35,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:35,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656790668] [2020-12-22 06:29:35,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:36,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:29:36,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656790668] [2020-12-22 06:29:36,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:36,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:29:36,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490021825] [2020-12-22 06:29:36,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:29:36,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:36,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:29:36,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:29:36,064 INFO L87 Difference]: Start difference. First operand 585 states. Second operand 3 states. [2020-12-22 06:29:36,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:36,250 INFO L93 Difference]: Finished difference Result 1720 states and 2984 transitions. [2020-12-22 06:29:36,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:29:36,253 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-22 06:29:36,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:36,307 INFO L225 Difference]: With dead ends: 1720 [2020-12-22 06:29:36,307 INFO L226 Difference]: Without dead ends: 1054 [2020-12-22 06:29:36,318 INFO L677 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 [2020-12-22 06:29:36,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2020-12-22 06:29:36,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 536. [2020-12-22 06:29:36,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-12-22 06:29:36,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 930 transitions. [2020-12-22 06:29:36,444 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 930 transitions. Word has length 62 [2020-12-22 06:29:36,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:36,445 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 930 transitions. [2020-12-22 06:29:36,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:29:36,470 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 930 transitions. [2020-12-22 06:29:36,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 06:29:36,482 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:36,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:36,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:29:36,483 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:36,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:36,486 INFO L82 PathProgramCache]: Analyzing trace with hash -2071876332, now seen corresponding path program 1 times [2020-12-22 06:29:36,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:36,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688624545] [2020-12-22 06:29:36,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:36,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:29:36,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688624545] [2020-12-22 06:29:36,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:36,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:29:36,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605347398] [2020-12-22 06:29:36,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:29:36,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:36,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:29:36,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:29:36,732 INFO L87 Difference]: Start difference. First operand 536 states and 930 transitions. Second operand 5 states. [2020-12-22 06:29:36,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:36,979 INFO L93 Difference]: Finished difference Result 1557 states and 2706 transitions. [2020-12-22 06:29:36,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:29:36,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-12-22 06:29:36,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:36,989 INFO L225 Difference]: With dead ends: 1557 [2020-12-22 06:29:36,989 INFO L226 Difference]: Without dead ends: 1040 [2020-12-22 06:29:36,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:29:36,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2020-12-22 06:29:37,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 536. [2020-12-22 06:29:37,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-12-22 06:29:37,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 929 transitions. [2020-12-22 06:29:37,030 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 929 transitions. Word has length 64 [2020-12-22 06:29:37,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:37,030 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 929 transitions. [2020-12-22 06:29:37,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:29:37,031 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 929 transitions. [2020-12-22 06:29:37,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 06:29:37,038 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:37,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:37,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:29:37,039 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:37,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:37,043 INFO L82 PathProgramCache]: Analyzing trace with hash 910925921, now seen corresponding path program 1 times [2020-12-22 06:29:37,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:37,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693296965] [2020-12-22 06:29:37,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:37,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:29:37,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693296965] [2020-12-22 06:29:37,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:37,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:29:37,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598754223] [2020-12-22 06:29:37,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:29:37,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:37,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:29:37,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:29:37,196 INFO L87 Difference]: Start difference. First operand 536 states and 929 transitions. Second operand 3 states. [2020-12-22 06:29:37,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:37,243 INFO L93 Difference]: Finished difference Result 1054 states and 1832 transitions. [2020-12-22 06:29:37,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:29:37,244 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 06:29:37,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:37,248 INFO L225 Difference]: With dead ends: 1054 [2020-12-22 06:29:37,248 INFO L226 Difference]: Without dead ends: 541 [2020-12-22 06:29:37,250 INFO L677 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 [2020-12-22 06:29:37,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2020-12-22 06:29:37,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 536. [2020-12-22 06:29:37,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-12-22 06:29:37,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 928 transitions. [2020-12-22 06:29:37,278 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 928 transitions. Word has length 65 [2020-12-22 06:29:37,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:37,286 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 928 transitions. [2020-12-22 06:29:37,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:29:37,287 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 928 transitions. [2020-12-22 06:29:37,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 06:29:37,289 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:37,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:37,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:29:37,290 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:37,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:37,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1516164825, now seen corresponding path program 1 times [2020-12-22 06:29:37,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:37,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58243379] [2020-12-22 06:29:37,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:37,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:29:37,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58243379] [2020-12-22 06:29:37,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:37,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:29:37,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316163132] [2020-12-22 06:29:37,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:29:37,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:37,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:29:37,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:29:37,439 INFO L87 Difference]: Start difference. First operand 536 states and 928 transitions. Second operand 3 states. [2020-12-22 06:29:37,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:37,486 INFO L93 Difference]: Finished difference Result 1064 states and 1845 transitions. [2020-12-22 06:29:37,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:29:37,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 06:29:37,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:37,491 INFO L225 Difference]: With dead ends: 1064 [2020-12-22 06:29:37,491 INFO L226 Difference]: Without dead ends: 536 [2020-12-22 06:29:37,492 INFO L677 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 [2020-12-22 06:29:37,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2020-12-22 06:29:37,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 536. [2020-12-22 06:29:37,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-12-22 06:29:37,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 926 transitions. [2020-12-22 06:29:37,515 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 926 transitions. Word has length 66 [2020-12-22 06:29:37,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:37,516 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 926 transitions. [2020-12-22 06:29:37,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:29:37,516 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 926 transitions. [2020-12-22 06:29:37,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 06:29:37,517 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:37,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:37,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:29:37,518 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:37,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:37,519 INFO L82 PathProgramCache]: Analyzing trace with hash -649267268, now seen corresponding path program 1 times [2020-12-22 06:29:37,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:37,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584993813] [2020-12-22 06:29:37,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:37,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:29:37,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584993813] [2020-12-22 06:29:37,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:37,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:29:37,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631489039] [2020-12-22 06:29:37,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:29:37,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:37,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:29:37,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:29:37,608 INFO L87 Difference]: Start difference. First operand 536 states and 926 transitions. Second operand 5 states. [2020-12-22 06:29:37,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:37,789 INFO L93 Difference]: Finished difference Result 1547 states and 2686 transitions. [2020-12-22 06:29:37,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:29:37,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-12-22 06:29:37,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:37,797 INFO L225 Difference]: With dead ends: 1547 [2020-12-22 06:29:37,797 INFO L226 Difference]: Without dead ends: 1038 [2020-12-22 06:29:37,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:29:37,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-12-22 06:29:37,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 536. [2020-12-22 06:29:37,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-12-22 06:29:37,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 925 transitions. [2020-12-22 06:29:37,832 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 925 transitions. Word has length 67 [2020-12-22 06:29:37,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:37,832 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 925 transitions. [2020-12-22 06:29:37,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:29:37,832 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 925 transitions. [2020-12-22 06:29:37,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 06:29:37,834 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:37,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:37,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:29:37,834 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:37,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:37,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1554239583, now seen corresponding path program 1 times [2020-12-22 06:29:37,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:37,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006340401] [2020-12-22 06:29:37,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:37,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:29:37,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006340401] [2020-12-22 06:29:37,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:37,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:29:37,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733925167] [2020-12-22 06:29:37,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:29:37,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:37,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:29:37,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:29:37,920 INFO L87 Difference]: Start difference. First operand 536 states and 925 transitions. Second operand 5 states. [2020-12-22 06:29:38,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:38,154 INFO L93 Difference]: Finished difference Result 1552 states and 2691 transitions. [2020-12-22 06:29:38,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:29:38,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-12-22 06:29:38,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:38,162 INFO L225 Difference]: With dead ends: 1552 [2020-12-22 06:29:38,162 INFO L226 Difference]: Without dead ends: 1043 [2020-12-22 06:29:38,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:29:38,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2020-12-22 06:29:38,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 536. [2020-12-22 06:29:38,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-12-22 06:29:38,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 924 transitions. [2020-12-22 06:29:38,206 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 924 transitions. Word has length 68 [2020-12-22 06:29:38,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:38,206 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 924 transitions. [2020-12-22 06:29:38,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:29:38,207 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 924 transitions. [2020-12-22 06:29:38,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:29:38,208 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:38,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:38,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:29:38,210 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:38,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:38,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1696413047, now seen corresponding path program 1 times [2020-12-22 06:29:38,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:38,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432687282] [2020-12-22 06:29:38,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:38,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:29:38,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432687282] [2020-12-22 06:29:38,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:38,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:29:38,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850388257] [2020-12-22 06:29:38,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:29:38,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:38,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:29:38,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:29:38,310 INFO L87 Difference]: Start difference. First operand 536 states and 924 transitions. Second operand 3 states. [2020-12-22 06:29:38,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:38,358 INFO L93 Difference]: Finished difference Result 834 states and 1424 transitions. [2020-12-22 06:29:38,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:29:38,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 06:29:38,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:38,363 INFO L225 Difference]: With dead ends: 834 [2020-12-22 06:29:38,363 INFO L226 Difference]: Without dead ends: 539 [2020-12-22 06:29:38,365 INFO L677 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 [2020-12-22 06:29:38,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2020-12-22 06:29:38,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 538. [2020-12-22 06:29:38,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-12-22 06:29:38,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 926 transitions. [2020-12-22 06:29:38,405 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 926 transitions. Word has length 69 [2020-12-22 06:29:38,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:38,406 INFO L481 AbstractCegarLoop]: Abstraction has 538 states and 926 transitions. [2020-12-22 06:29:38,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:29:38,406 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 926 transitions. [2020-12-22 06:29:38,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 06:29:38,407 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:38,407 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:38,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:29:38,408 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:38,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:38,408 INFO L82 PathProgramCache]: Analyzing trace with hash -38431755, now seen corresponding path program 1 times [2020-12-22 06:29:38,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:38,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150357343] [2020-12-22 06:29:38,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:38,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:29:38,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150357343] [2020-12-22 06:29:38,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:38,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:29:38,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061814588] [2020-12-22 06:29:38,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:29:38,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:38,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:29:38,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:29:38,512 INFO L87 Difference]: Start difference. First operand 538 states and 926 transitions. Second operand 3 states. [2020-12-22 06:29:38,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:38,579 INFO L93 Difference]: Finished difference Result 1500 states and 2602 transitions. [2020-12-22 06:29:38,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:29:38,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-22 06:29:38,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:38,586 INFO L225 Difference]: With dead ends: 1500 [2020-12-22 06:29:38,586 INFO L226 Difference]: Without dead ends: 993 [2020-12-22 06:29:38,588 INFO L677 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 [2020-12-22 06:29:38,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2020-12-22 06:29:38,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 698. [2020-12-22 06:29:38,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 698 states. [2020-12-22 06:29:38,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1219 transitions. [2020-12-22 06:29:38,644 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1219 transitions. Word has length 75 [2020-12-22 06:29:38,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:38,644 INFO L481 AbstractCegarLoop]: Abstraction has 698 states and 1219 transitions. [2020-12-22 06:29:38,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:29:38,644 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1219 transitions. [2020-12-22 06:29:38,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 06:29:38,646 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:38,646 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:38,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:29:38,648 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:38,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:38,649 INFO L82 PathProgramCache]: Analyzing trace with hash -435431084, now seen corresponding path program 1 times [2020-12-22 06:29:38,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:38,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725014816] [2020-12-22 06:29:38,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:38,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:29:38,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725014816] [2020-12-22 06:29:38,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960451292] [2020-12-22 06:29:38,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 06:29:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:39,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 1019 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 06:29:39,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 06:29:39,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:29:39,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 06:29:39,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 06:29:39,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943808137] [2020-12-22 06:29:39,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:29:39,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:39,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:29:39,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:29:39,454 INFO L87 Difference]: Start difference. First operand 698 states and 1219 transitions. Second operand 5 states. [2020-12-22 06:29:39,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:39,573 INFO L93 Difference]: Finished difference Result 1504 states and 2605 transitions. [2020-12-22 06:29:39,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:29:39,573 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2020-12-22 06:29:39,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:39,580 INFO L225 Difference]: With dead ends: 1504 [2020-12-22 06:29:39,581 INFO L226 Difference]: Without dead ends: 1209 [2020-12-22 06:29:39,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:29:39,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2020-12-22 06:29:39,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 912. [2020-12-22 06:29:39,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 912 states. [2020-12-22 06:29:39,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1609 transitions. [2020-12-22 06:29:39,656 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1609 transitions. Word has length 76 [2020-12-22 06:29:39,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:39,658 INFO L481 AbstractCegarLoop]: Abstraction has 912 states and 1609 transitions. [2020-12-22 06:29:39,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:29:39,658 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1609 transitions. [2020-12-22 06:29:39,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 06:29:39,661 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:39,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:39,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-22 06:29:39,877 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:39,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:39,878 INFO L82 PathProgramCache]: Analyzing trace with hash -862995929, now seen corresponding path program 1 times [2020-12-22 06:29:39,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:39,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14682391] [2020-12-22 06:29:39,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:29:39,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14682391] [2020-12-22 06:29:39,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:39,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:29:39,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462961074] [2020-12-22 06:29:39,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:29:39,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:39,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:29:39,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:29:39,986 INFO L87 Difference]: Start difference. First operand 912 states and 1609 transitions. Second operand 3 states. [2020-12-22 06:29:40,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:40,110 INFO L93 Difference]: Finished difference Result 2402 states and 4251 transitions. [2020-12-22 06:29:40,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:29:40,111 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 06:29:40,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:40,123 INFO L225 Difference]: With dead ends: 2402 [2020-12-22 06:29:40,123 INFO L226 Difference]: Without dead ends: 1579 [2020-12-22 06:29:40,127 INFO L677 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 [2020-12-22 06:29:40,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2020-12-22 06:29:40,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1284. [2020-12-22 06:29:40,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1284 states. [2020-12-22 06:29:40,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 2287 transitions. [2020-12-22 06:29:40,263 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 2287 transitions. Word has length 82 [2020-12-22 06:29:40,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:40,264 INFO L481 AbstractCegarLoop]: Abstraction has 1284 states and 2287 transitions. [2020-12-22 06:29:40,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:29:40,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 2287 transitions. [2020-12-22 06:29:40,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 06:29:40,270 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:40,270 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:40,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:29:40,271 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:40,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:40,271 INFO L82 PathProgramCache]: Analyzing trace with hash 710120151, now seen corresponding path program 2 times [2020-12-22 06:29:40,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:40,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924518548] [2020-12-22 06:29:40,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:40,411 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:29:40,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924518548] [2020-12-22 06:29:40,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:40,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:29:40,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333695351] [2020-12-22 06:29:40,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:29:40,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:40,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:29:40,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:29:40,414 INFO L87 Difference]: Start difference. First operand 1284 states and 2287 transitions. Second operand 3 states. [2020-12-22 06:29:40,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:40,577 INFO L93 Difference]: Finished difference Result 2616 states and 4639 transitions. [2020-12-22 06:29:40,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:29:40,578 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-22 06:29:40,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:40,590 INFO L225 Difference]: With dead ends: 2616 [2020-12-22 06:29:40,591 INFO L226 Difference]: Without dead ends: 1579 [2020-12-22 06:29:40,593 INFO L677 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 [2020-12-22 06:29:40,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2020-12-22 06:29:40,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1284. [2020-12-22 06:29:40,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1284 states. [2020-12-22 06:29:40,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 2285 transitions. [2020-12-22 06:29:40,729 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 2285 transitions. Word has length 83 [2020-12-22 06:29:40,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:40,730 INFO L481 AbstractCegarLoop]: Abstraction has 1284 states and 2285 transitions. [2020-12-22 06:29:40,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:29:40,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 2285 transitions. [2020-12-22 06:29:40,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 06:29:40,736 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:40,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:40,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:29:40,737 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:40,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:40,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1306817718, now seen corresponding path program 1 times [2020-12-22 06:29:40,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:40,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549153246] [2020-12-22 06:29:40,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:40,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:29:40,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549153246] [2020-12-22 06:29:40,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:40,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:29:40,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677489739] [2020-12-22 06:29:40,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:29:40,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:40,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:29:40,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:29:40,864 INFO L87 Difference]: Start difference. First operand 1284 states and 2285 transitions. Second operand 3 states. [2020-12-22 06:29:41,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:41,021 INFO L93 Difference]: Finished difference Result 3490 states and 6234 transitions. [2020-12-22 06:29:41,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:29:41,021 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-22 06:29:41,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:41,036 INFO L225 Difference]: With dead ends: 3490 [2020-12-22 06:29:41,036 INFO L226 Difference]: Without dead ends: 2303 [2020-12-22 06:29:41,039 INFO L677 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 [2020-12-22 06:29:41,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2020-12-22 06:29:41,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 2008. [2020-12-22 06:29:41,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-12-22 06:29:41,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 3604 transitions. [2020-12-22 06:29:41,197 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 3604 transitions. Word has length 83 [2020-12-22 06:29:41,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:41,199 INFO L481 AbstractCegarLoop]: Abstraction has 2008 states and 3604 transitions. [2020-12-22 06:29:41,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:29:41,199 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 3604 transitions. [2020-12-22 06:29:41,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 06:29:41,207 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:41,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:41,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:29:41,207 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:41,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:41,208 INFO L82 PathProgramCache]: Analyzing trace with hash 454298729, now seen corresponding path program 1 times [2020-12-22 06:29:41,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:41,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996221323] [2020-12-22 06:29:41,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:41,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:29:41,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996221323] [2020-12-22 06:29:41,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:41,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:29:41,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968218117] [2020-12-22 06:29:41,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:29:41,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:41,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:29:41,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:29:41,308 INFO L87 Difference]: Start difference. First operand 2008 states and 3604 transitions. Second operand 3 states. [2020-12-22 06:29:41,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:41,587 INFO L93 Difference]: Finished difference Result 5398 states and 9710 transitions. [2020-12-22 06:29:41,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:29:41,589 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-12-22 06:29:41,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:41,610 INFO L225 Difference]: With dead ends: 5398 [2020-12-22 06:29:41,610 INFO L226 Difference]: Without dead ends: 3521 [2020-12-22 06:29:41,615 INFO L677 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 [2020-12-22 06:29:41,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3521 states. [2020-12-22 06:29:41,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3521 to 3226. [2020-12-22 06:29:41,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3226 states. [2020-12-22 06:29:41,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3226 states to 3226 states and 5817 transitions. [2020-12-22 06:29:41,831 INFO L78 Accepts]: Start accepts. Automaton has 3226 states and 5817 transitions. Word has length 84 [2020-12-22 06:29:41,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:41,831 INFO L481 AbstractCegarLoop]: Abstraction has 3226 states and 5817 transitions. [2020-12-22 06:29:41,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:29:41,832 INFO L276 IsEmpty]: Start isEmpty. Operand 3226 states and 5817 transitions. [2020-12-22 06:29:41,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 06:29:41,840 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:41,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:41,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:29:41,840 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:41,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:41,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1330840327, now seen corresponding path program 1 times [2020-12-22 06:29:41,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:41,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87191122] [2020-12-22 06:29:41,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:41,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:29:41,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87191122] [2020-12-22 06:29:41,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:41,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:29:41,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120477796] [2020-12-22 06:29:41,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:29:41,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:41,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:29:41,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:29:41,921 INFO L87 Difference]: Start difference. First operand 3226 states and 5817 transitions. Second operand 3 states. [2020-12-22 06:29:42,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:42,263 INFO L93 Difference]: Finished difference Result 8768 states and 15832 transitions. [2020-12-22 06:29:42,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:29:42,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-12-22 06:29:42,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:42,296 INFO L225 Difference]: With dead ends: 8768 [2020-12-22 06:29:42,296 INFO L226 Difference]: Without dead ends: 5707 [2020-12-22 06:29:42,302 INFO L677 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 [2020-12-22 06:29:42,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5707 states. [2020-12-22 06:29:42,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5707 to 5412. [2020-12-22 06:29:42,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5412 states. [2020-12-22 06:29:42,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5412 states to 5412 states and 9778 transitions. [2020-12-22 06:29:42,623 INFO L78 Accepts]: Start accepts. Automaton has 5412 states and 9778 transitions. Word has length 85 [2020-12-22 06:29:42,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:42,623 INFO L481 AbstractCegarLoop]: Abstraction has 5412 states and 9778 transitions. [2020-12-22 06:29:42,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:29:42,623 INFO L276 IsEmpty]: Start isEmpty. Operand 5412 states and 9778 transitions. [2020-12-22 06:29:42,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 06:29:42,634 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:42,634 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:42,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:29:42,634 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:42,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:42,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1116046123, now seen corresponding path program 1 times [2020-12-22 06:29:42,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:42,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030302358] [2020-12-22 06:29:42,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:42,779 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 06:29:42,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030302358] [2020-12-22 06:29:42,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:42,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:29:42,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248915434] [2020-12-22 06:29:42,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:29:42,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:42,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:29:42,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:29:42,784 INFO L87 Difference]: Start difference. First operand 5412 states and 9778 transitions. Second operand 5 states. [2020-12-22 06:29:43,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:43,605 INFO L93 Difference]: Finished difference Result 15455 states and 27951 transitions. [2020-12-22 06:29:43,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:29:43,607 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-12-22 06:29:43,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:43,660 INFO L225 Difference]: With dead ends: 15455 [2020-12-22 06:29:43,660 INFO L226 Difference]: Without dead ends: 10290 [2020-12-22 06:29:43,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:29:43,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10290 states. [2020-12-22 06:29:44,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10290 to 5412. [2020-12-22 06:29:44,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5412 states. [2020-12-22 06:29:44,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5412 states to 5412 states and 9728 transitions. [2020-12-22 06:29:44,138 INFO L78 Accepts]: Start accepts. Automaton has 5412 states and 9728 transitions. Word has length 86 [2020-12-22 06:29:44,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:44,139 INFO L481 AbstractCegarLoop]: Abstraction has 5412 states and 9728 transitions. [2020-12-22 06:29:44,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:29:44,139 INFO L276 IsEmpty]: Start isEmpty. Operand 5412 states and 9728 transitions. [2020-12-22 06:29:44,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 06:29:44,150 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:44,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:44,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:29:44,151 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:44,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:44,151 INFO L82 PathProgramCache]: Analyzing trace with hash 221774042, now seen corresponding path program 1 times [2020-12-22 06:29:44,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:44,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129629970] [2020-12-22 06:29:44,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:44,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:29:44,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129629970] [2020-12-22 06:29:44,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:44,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:29:44,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438300346] [2020-12-22 06:29:44,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:29:44,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:44,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:29:44,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:29:44,243 INFO L87 Difference]: Start difference. First operand 5412 states and 9728 transitions. Second operand 3 states. [2020-12-22 06:29:44,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:44,801 INFO L93 Difference]: Finished difference Result 15652 states and 28179 transitions. [2020-12-22 06:29:44,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:29:44,802 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-22 06:29:44,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:44,890 INFO L225 Difference]: With dead ends: 15652 [2020-12-22 06:29:44,890 INFO L226 Difference]: Without dead ends: 10413 [2020-12-22 06:29:44,898 INFO L677 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 [2020-12-22 06:29:44,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10413 states. [2020-12-22 06:29:45,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10413 to 10118. [2020-12-22 06:29:45,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10118 states. [2020-12-22 06:29:45,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10118 states to 10118 states and 18209 transitions. [2020-12-22 06:29:45,473 INFO L78 Accepts]: Start accepts. Automaton has 10118 states and 18209 transitions. Word has length 86 [2020-12-22 06:29:45,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:45,474 INFO L481 AbstractCegarLoop]: Abstraction has 10118 states and 18209 transitions. [2020-12-22 06:29:45,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:29:45,474 INFO L276 IsEmpty]: Start isEmpty. Operand 10118 states and 18209 transitions. [2020-12-22 06:29:45,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 06:29:45,490 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:45,491 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:45,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:29:45,491 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:45,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:45,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1706055962, now seen corresponding path program 1 times [2020-12-22 06:29:45,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:45,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481487899] [2020-12-22 06:29:45,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:45,845 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:29:45,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481487899] [2020-12-22 06:29:45,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:45,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 06:29:45,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67748230] [2020-12-22 06:29:45,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 06:29:45,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:45,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 06:29:45,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:29:45,848 INFO L87 Difference]: Start difference. First operand 10118 states and 18209 transitions. Second operand 9 states. [2020-12-22 06:29:48,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:48,243 INFO L93 Difference]: Finished difference Result 21760 states and 38935 transitions. [2020-12-22 06:29:48,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 06:29:48,244 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-12-22 06:29:48,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:48,306 INFO L225 Difference]: With dead ends: 21760 [2020-12-22 06:29:48,306 INFO L226 Difference]: Without dead ends: 21496 [2020-12-22 06:29:48,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2020-12-22 06:29:48,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21496 states. [2020-12-22 06:29:49,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21496 to 19961. [2020-12-22 06:29:49,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19961 states. [2020-12-22 06:29:49,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19961 states to 19961 states and 35954 transitions. [2020-12-22 06:29:49,571 INFO L78 Accepts]: Start accepts. Automaton has 19961 states and 35954 transitions. Word has length 87 [2020-12-22 06:29:49,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:49,571 INFO L481 AbstractCegarLoop]: Abstraction has 19961 states and 35954 transitions. [2020-12-22 06:29:49,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 06:29:49,572 INFO L276 IsEmpty]: Start isEmpty. Operand 19961 states and 35954 transitions. [2020-12-22 06:29:49,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 06:29:49,600 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:49,600 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:49,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:29:49,601 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:49,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:49,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1578824895, now seen corresponding path program 1 times [2020-12-22 06:29:49,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:49,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325925878] [2020-12-22 06:29:49,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:49,727 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:29:49,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325925878] [2020-12-22 06:29:49,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:49,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:29:49,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505557551] [2020-12-22 06:29:49,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:29:49,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:49,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:29:49,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:29:49,733 INFO L87 Difference]: Start difference. First operand 19961 states and 35954 transitions. Second operand 7 states. [2020-12-22 06:29:50,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:50,849 INFO L93 Difference]: Finished difference Result 20630 states and 37049 transitions. [2020-12-22 06:29:50,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 06:29:50,850 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 88 [2020-12-22 06:29:50,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:50,918 INFO L225 Difference]: With dead ends: 20630 [2020-12-22 06:29:50,919 INFO L226 Difference]: Without dead ends: 20196 [2020-12-22 06:29:50,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-12-22 06:29:50,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20196 states. [2020-12-22 06:29:51,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20196 to 19949. [2020-12-22 06:29:51,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19949 states. [2020-12-22 06:29:51,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19949 states to 19949 states and 35927 transitions. [2020-12-22 06:29:51,920 INFO L78 Accepts]: Start accepts. Automaton has 19949 states and 35927 transitions. Word has length 88 [2020-12-22 06:29:51,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:51,920 INFO L481 AbstractCegarLoop]: Abstraction has 19949 states and 35927 transitions. [2020-12-22 06:29:51,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:29:51,921 INFO L276 IsEmpty]: Start isEmpty. Operand 19949 states and 35927 transitions. [2020-12-22 06:29:51,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 06:29:51,943 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:51,943 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:51,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:29:51,944 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:51,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:51,944 INFO L82 PathProgramCache]: Analyzing trace with hash 417854871, now seen corresponding path program 1 times [2020-12-22 06:29:51,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:51,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841855609] [2020-12-22 06:29:51,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:52,069 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:29:52,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841855609] [2020-12-22 06:29:52,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:52,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 06:29:52,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143957458] [2020-12-22 06:29:52,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 06:29:52,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:52,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 06:29:52,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:29:52,072 INFO L87 Difference]: Start difference. First operand 19949 states and 35927 transitions. Second operand 9 states. [2020-12-22 06:29:54,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:54,897 INFO L93 Difference]: Finished difference Result 41990 states and 75255 transitions. [2020-12-22 06:29:54,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 06:29:54,897 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-12-22 06:29:54,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:54,998 INFO L225 Difference]: With dead ends: 41990 [2020-12-22 06:29:54,999 INFO L226 Difference]: Without dead ends: 41568 [2020-12-22 06:29:55,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2020-12-22 06:29:55,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41568 states. [2020-12-22 06:29:56,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41568 to 39664. [2020-12-22 06:29:56,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39664 states. [2020-12-22 06:29:57,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39664 states to 39664 states and 71456 transitions. [2020-12-22 06:29:57,009 INFO L78 Accepts]: Start accepts. Automaton has 39664 states and 71456 transitions. Word has length 88 [2020-12-22 06:29:57,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:57,010 INFO L481 AbstractCegarLoop]: Abstraction has 39664 states and 71456 transitions. [2020-12-22 06:29:57,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 06:29:57,010 INFO L276 IsEmpty]: Start isEmpty. Operand 39664 states and 71456 transitions. [2020-12-22 06:29:57,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 06:29:57,047 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:57,048 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:57,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:29:57,048 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:57,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:57,049 INFO L82 PathProgramCache]: Analyzing trace with hash 440487125, now seen corresponding path program 1 times [2020-12-22 06:29:57,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:57,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117304797] [2020-12-22 06:29:57,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:57,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:57,173 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:29:57,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117304797] [2020-12-22 06:29:57,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:57,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 06:29:57,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803919579] [2020-12-22 06:29:57,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 06:29:57,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:57,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 06:29:57,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:29:57,176 INFO L87 Difference]: Start difference. First operand 39664 states and 71456 transitions. Second operand 9 states. [2020-12-22 06:30:00,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:00,010 INFO L93 Difference]: Finished difference Result 43708 states and 78066 transitions. [2020-12-22 06:30:00,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 06:30:00,011 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-12-22 06:30:00,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:00,093 INFO L225 Difference]: With dead ends: 43708 [2020-12-22 06:30:00,093 INFO L226 Difference]: Without dead ends: 42972 [2020-12-22 06:30:00,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2020-12-22 06:30:00,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42972 states. [2020-12-22 06:30:01,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42972 to 39811. [2020-12-22 06:30:01,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39811 states. [2020-12-22 06:30:02,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39811 states to 39811 states and 71682 transitions. [2020-12-22 06:30:02,002 INFO L78 Accepts]: Start accepts. Automaton has 39811 states and 71682 transitions. Word has length 88 [2020-12-22 06:30:02,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:02,003 INFO L481 AbstractCegarLoop]: Abstraction has 39811 states and 71682 transitions. [2020-12-22 06:30:02,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 06:30:02,003 INFO L276 IsEmpty]: Start isEmpty. Operand 39811 states and 71682 transitions. [2020-12-22 06:30:02,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 06:30:02,029 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:02,029 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:30:02,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:30:02,030 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:30:02,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:02,030 INFO L82 PathProgramCache]: Analyzing trace with hash -947583578, now seen corresponding path program 1 times [2020-12-22 06:30:02,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:02,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270482014] [2020-12-22 06:30:02,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:02,140 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:30:02,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270482014] [2020-12-22 06:30:02,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:02,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:30:02,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476284110] [2020-12-22 06:30:02,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:30:02,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:02,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:30:02,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:30:02,143 INFO L87 Difference]: Start difference. First operand 39811 states and 71682 transitions. Second operand 5 states. [2020-12-22 06:30:04,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:04,522 INFO L93 Difference]: Finished difference Result 45163 states and 80440 transitions. [2020-12-22 06:30:04,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:30:04,523 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-12-22 06:30:04,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:04,597 INFO L225 Difference]: With dead ends: 45163 [2020-12-22 06:30:04,598 INFO L226 Difference]: Without dead ends: 44410 [2020-12-22 06:30:04,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:30:04,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44410 states. [2020-12-22 06:30:06,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44410 to 40753. [2020-12-22 06:30:06,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40753 states. [2020-12-22 06:30:07,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40753 states to 40753 states and 73207 transitions. [2020-12-22 06:30:07,059 INFO L78 Accepts]: Start accepts. Automaton has 40753 states and 73207 transitions. Word has length 89 [2020-12-22 06:30:07,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:07,059 INFO L481 AbstractCegarLoop]: Abstraction has 40753 states and 73207 transitions. [2020-12-22 06:30:07,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:30:07,060 INFO L276 IsEmpty]: Start isEmpty. Operand 40753 states and 73207 transitions. [2020-12-22 06:30:07,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 06:30:07,081 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:07,081 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:30:07,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:30:07,082 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:30:07,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:07,082 INFO L82 PathProgramCache]: Analyzing trace with hash -59818570, now seen corresponding path program 1 times [2020-12-22 06:30:07,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:07,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822960697] [2020-12-22 06:30:07,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:07,232 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:30:07,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822960697] [2020-12-22 06:30:07,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:07,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 06:30:07,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393109280] [2020-12-22 06:30:07,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 06:30:07,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:07,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 06:30:07,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-22 06:30:07,234 INFO L87 Difference]: Start difference. First operand 40753 states and 73207 transitions. Second operand 10 states. [2020-12-22 06:30:09,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:09,355 INFO L93 Difference]: Finished difference Result 43124 states and 77007 transitions. [2020-12-22 06:30:09,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 06:30:09,356 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-12-22 06:30:09,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:09,416 INFO L225 Difference]: With dead ends: 43124 [2020-12-22 06:30:09,416 INFO L226 Difference]: Without dead ends: 41419 [2020-12-22 06:30:09,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=454, Unknown=0, NotChecked=0, Total=650 [2020-12-22 06:30:09,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41419 states. [2020-12-22 06:30:11,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41419 to 40713. [2020-12-22 06:30:11,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40713 states. [2020-12-22 06:30:11,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40713 states to 40713 states and 73122 transitions. [2020-12-22 06:30:11,472 INFO L78 Accepts]: Start accepts. Automaton has 40713 states and 73122 transitions. Word has length 90 [2020-12-22 06:30:11,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:11,472 INFO L481 AbstractCegarLoop]: Abstraction has 40713 states and 73122 transitions. [2020-12-22 06:30:11,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 06:30:11,473 INFO L276 IsEmpty]: Start isEmpty. Operand 40713 states and 73122 transitions. [2020-12-22 06:30:11,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 06:30:11,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:11,501 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:30:11,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:30:11,501 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:30:11,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:11,502 INFO L82 PathProgramCache]: Analyzing trace with hash 706949873, now seen corresponding path program 1 times [2020-12-22 06:30:11,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:11,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986730487] [2020-12-22 06:30:11,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:11,581 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:30:11,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986730487] [2020-12-22 06:30:11,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:11,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:30:11,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770712912] [2020-12-22 06:30:11,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:30:11,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:11,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:30:11,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:30:11,583 INFO L87 Difference]: Start difference. First operand 40713 states and 73122 transitions. Second operand 5 states. [2020-12-22 06:30:13,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:13,664 INFO L93 Difference]: Finished difference Result 43653 states and 77835 transitions. [2020-12-22 06:30:13,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:30:13,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-12-22 06:30:13,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:13,749 INFO L225 Difference]: With dead ends: 43653 [2020-12-22 06:30:13,750 INFO L226 Difference]: Without dead ends: 42478 [2020-12-22 06:30:13,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:30:13,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42478 states. [2020-12-22 06:30:15,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42478 to 40725. [2020-12-22 06:30:15,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40725 states. [2020-12-22 06:30:15,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40725 states to 40725 states and 73129 transitions. [2020-12-22 06:30:15,795 INFO L78 Accepts]: Start accepts. Automaton has 40725 states and 73129 transitions. Word has length 90 [2020-12-22 06:30:15,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:15,795 INFO L481 AbstractCegarLoop]: Abstraction has 40725 states and 73129 transitions. [2020-12-22 06:30:15,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:30:15,795 INFO L276 IsEmpty]: Start isEmpty. Operand 40725 states and 73129 transitions. [2020-12-22 06:30:15,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 06:30:15,975 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:15,976 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:30:15,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:30:15,976 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:30:15,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:15,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1253259295, now seen corresponding path program 1 times [2020-12-22 06:30:15,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:15,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37775503] [2020-12-22 06:30:15,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:16,063 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:30:16,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37775503] [2020-12-22 06:30:16,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:16,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:30:16,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170900447] [2020-12-22 06:30:16,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:30:16,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:16,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:30:16,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:30:16,065 INFO L87 Difference]: Start difference. First operand 40725 states and 73129 transitions. Second operand 4 states. [2020-12-22 06:30:18,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:18,666 INFO L93 Difference]: Finished difference Result 46634 states and 82515 transitions. [2020-12-22 06:30:18,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:30:18,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-12-22 06:30:18,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:18,720 INFO L225 Difference]: With dead ends: 46634 [2020-12-22 06:30:18,721 INFO L226 Difference]: Without dead ends: 44742 [2020-12-22 06:30:18,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:30:18,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44742 states. [2020-12-22 06:30:20,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44742 to 40743. [2020-12-22 06:30:20,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40743 states. [2020-12-22 06:30:20,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40743 states to 40743 states and 73147 transitions. [2020-12-22 06:30:20,643 INFO L78 Accepts]: Start accepts. Automaton has 40743 states and 73147 transitions. Word has length 92 [2020-12-22 06:30:20,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:20,643 INFO L481 AbstractCegarLoop]: Abstraction has 40743 states and 73147 transitions. [2020-12-22 06:30:20,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:30:20,643 INFO L276 IsEmpty]: Start isEmpty. Operand 40743 states and 73147 transitions. [2020-12-22 06:30:20,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 06:30:20,665 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:20,666 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:30:20,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:30:20,666 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:30:20,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:20,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1170904418, now seen corresponding path program 1 times [2020-12-22 06:30:20,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:20,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67599159] [2020-12-22 06:30:20,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:20,748 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:30:20,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67599159] [2020-12-22 06:30:20,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:20,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:30:20,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711183116] [2020-12-22 06:30:20,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:30:20,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:20,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:30:20,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:30:20,751 INFO L87 Difference]: Start difference. First operand 40743 states and 73147 transitions. Second operand 6 states. [2020-12-22 06:30:22,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:22,803 INFO L93 Difference]: Finished difference Result 44298 states and 78863 transitions. [2020-12-22 06:30:22,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:30:22,804 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2020-12-22 06:30:22,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:22,863 INFO L225 Difference]: With dead ends: 44298 [2020-12-22 06:30:22,863 INFO L226 Difference]: Without dead ends: 42353 [2020-12-22 06:30:22,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-22 06:30:22,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42353 states. [2020-12-22 06:30:24,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42353 to 40690. [2020-12-22 06:30:24,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40690 states. [2020-12-22 06:30:24,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40690 states to 40690 states and 73055 transitions. [2020-12-22 06:30:24,637 INFO L78 Accepts]: Start accepts. Automaton has 40690 states and 73055 transitions. Word has length 92 [2020-12-22 06:30:24,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:24,637 INFO L481 AbstractCegarLoop]: Abstraction has 40690 states and 73055 transitions. [2020-12-22 06:30:24,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:30:24,637 INFO L276 IsEmpty]: Start isEmpty. Operand 40690 states and 73055 transitions. [2020-12-22 06:30:24,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 06:30:24,659 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:24,659 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:30:24,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 06:30:24,660 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:30:24,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:24,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1713920702, now seen corresponding path program 1 times [2020-12-22 06:30:24,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:24,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346644281] [2020-12-22 06:30:24,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:24,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:24,729 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:30:24,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346644281] [2020-12-22 06:30:24,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:24,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:30:24,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601527404] [2020-12-22 06:30:24,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:30:24,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:24,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:30:24,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:30:24,731 INFO L87 Difference]: Start difference. First operand 40690 states and 73055 transitions. Second operand 4 states. [2020-12-22 06:30:26,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:26,597 INFO L93 Difference]: Finished difference Result 41801 states and 74834 transitions. [2020-12-22 06:30:26,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:30:26,598 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-12-22 06:30:26,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:26,651 INFO L225 Difference]: With dead ends: 41801 [2020-12-22 06:30:26,651 INFO L226 Difference]: Without dead ends: 40796 [2020-12-22 06:30:26,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:30:26,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40796 states. [2020-12-22 06:30:28,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40796 to 40469. [2020-12-22 06:30:28,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40469 states. [2020-12-22 06:30:28,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40469 states to 40469 states and 72685 transitions. [2020-12-22 06:30:28,689 INFO L78 Accepts]: Start accepts. Automaton has 40469 states and 72685 transitions. Word has length 92 [2020-12-22 06:30:28,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:28,690 INFO L481 AbstractCegarLoop]: Abstraction has 40469 states and 72685 transitions. [2020-12-22 06:30:28,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:30:28,690 INFO L276 IsEmpty]: Start isEmpty. Operand 40469 states and 72685 transitions. [2020-12-22 06:30:28,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 06:30:28,719 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:28,724 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:30:28,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 06:30:28,724 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:30:28,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:28,725 INFO L82 PathProgramCache]: Analyzing trace with hash -233782895, now seen corresponding path program 1 times [2020-12-22 06:30:28,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:28,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431473768] [2020-12-22 06:30:28,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:28,846 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:30:28,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431473768] [2020-12-22 06:30:28,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:28,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:30:28,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950645639] [2020-12-22 06:30:28,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:30:28,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:28,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:30:28,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:30:28,849 INFO L87 Difference]: Start difference. First operand 40469 states and 72685 transitions. Second operand 5 states. [2020-12-22 06:30:31,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:31,698 INFO L93 Difference]: Finished difference Result 47437 states and 83635 transitions. [2020-12-22 06:30:31,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:30:31,699 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-12-22 06:30:31,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:31,753 INFO L225 Difference]: With dead ends: 47437 [2020-12-22 06:30:31,753 INFO L226 Difference]: Without dead ends: 46342 [2020-12-22 06:30:31,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:30:31,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46342 states. [2020-12-22 06:30:34,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46342 to 41611. [2020-12-22 06:30:34,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41611 states. [2020-12-22 06:30:34,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41611 states to 41611 states and 74487 transitions. [2020-12-22 06:30:34,105 INFO L78 Accepts]: Start accepts. Automaton has 41611 states and 74487 transitions. Word has length 93 [2020-12-22 06:30:34,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:34,105 INFO L481 AbstractCegarLoop]: Abstraction has 41611 states and 74487 transitions. [2020-12-22 06:30:34,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:30:34,105 INFO L276 IsEmpty]: Start isEmpty. Operand 41611 states and 74487 transitions. [2020-12-22 06:30:34,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 06:30:34,132 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:34,132 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:30:34,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 06:30:34,133 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:30:34,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:34,133 INFO L82 PathProgramCache]: Analyzing trace with hash -758730678, now seen corresponding path program 1 times [2020-12-22 06:30:34,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:34,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425659837] [2020-12-22 06:30:34,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:34,276 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:30:34,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425659837] [2020-12-22 06:30:34,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:34,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 06:30:34,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099770636] [2020-12-22 06:30:34,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 06:30:34,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:34,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 06:30:34,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:30:34,279 INFO L87 Difference]: Start difference. First operand 41611 states and 74487 transitions. Second operand 11 states. [2020-12-22 06:30:36,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:36,984 INFO L93 Difference]: Finished difference Result 44640 states and 79252 transitions. [2020-12-22 06:30:36,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 06:30:36,984 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 94 [2020-12-22 06:30:36,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:37,040 INFO L225 Difference]: With dead ends: 44640 [2020-12-22 06:30:37,040 INFO L226 Difference]: Without dead ends: 42399 [2020-12-22 06:30:37,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=254, Invalid=616, Unknown=0, NotChecked=0, Total=870 [2020-12-22 06:30:37,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42399 states. [2020-12-22 06:30:38,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42399 to 41451. [2020-12-22 06:30:38,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41451 states. [2020-12-22 06:30:39,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41451 states to 41451 states and 74191 transitions. [2020-12-22 06:30:39,005 INFO L78 Accepts]: Start accepts. Automaton has 41451 states and 74191 transitions. Word has length 94 [2020-12-22 06:30:39,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:39,006 INFO L481 AbstractCegarLoop]: Abstraction has 41451 states and 74191 transitions. [2020-12-22 06:30:39,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 06:30:39,006 INFO L276 IsEmpty]: Start isEmpty. Operand 41451 states and 74191 transitions. [2020-12-22 06:30:39,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 06:30:39,220 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:39,220 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:30:39,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 06:30:39,221 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:30:39,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:39,221 INFO L82 PathProgramCache]: Analyzing trace with hash -670819567, now seen corresponding path program 1 times [2020-12-22 06:30:39,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:39,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688744913] [2020-12-22 06:30:39,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:39,314 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:30:39,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688744913] [2020-12-22 06:30:39,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:39,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:30:39,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098909372] [2020-12-22 06:30:39,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:30:39,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:39,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:30:39,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:30:39,316 INFO L87 Difference]: Start difference. First operand 41451 states and 74191 transitions. Second operand 5 states. [2020-12-22 06:30:42,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:42,948 INFO L93 Difference]: Finished difference Result 52458 states and 91360 transitions. [2020-12-22 06:30:42,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:30:42,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-12-22 06:30:42,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:43,009 INFO L225 Difference]: With dead ends: 52458 [2020-12-22 06:30:43,010 INFO L226 Difference]: Without dead ends: 50153 [2020-12-22 06:30:43,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:30:43,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50153 states. [2020-12-22 06:30:45,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50153 to 44108. [2020-12-22 06:30:45,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44108 states. [2020-12-22 06:30:45,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44108 states to 44108 states and 78352 transitions. [2020-12-22 06:30:45,678 INFO L78 Accepts]: Start accepts. Automaton has 44108 states and 78352 transitions. Word has length 106 [2020-12-22 06:30:45,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:45,679 INFO L481 AbstractCegarLoop]: Abstraction has 44108 states and 78352 transitions. [2020-12-22 06:30:45,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:30:45,679 INFO L276 IsEmpty]: Start isEmpty. Operand 44108 states and 78352 transitions. [2020-12-22 06:30:45,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 06:30:45,712 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:45,712 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:30:45,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 06:30:45,712 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:30:45,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:45,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1497056763, now seen corresponding path program 1 times [2020-12-22 06:30:45,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:45,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083794420] [2020-12-22 06:30:45,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:45,856 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:30:45,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083794420] [2020-12-22 06:30:45,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:45,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 06:30:45,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904933555] [2020-12-22 06:30:45,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 06:30:45,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:45,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 06:30:45,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:30:45,858 INFO L87 Difference]: Start difference. First operand 44108 states and 78352 transitions. Second operand 11 states. [2020-12-22 06:30:49,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:49,180 INFO L93 Difference]: Finished difference Result 49463 states and 86711 transitions. [2020-12-22 06:30:49,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 06:30:49,180 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 107 [2020-12-22 06:30:49,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:49,232 INFO L225 Difference]: With dead ends: 49463 [2020-12-22 06:30:49,232 INFO L226 Difference]: Without dead ends: 44848 [2020-12-22 06:30:49,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=254, Invalid=616, Unknown=0, NotChecked=0, Total=870 [2020-12-22 06:30:49,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44848 states. [2020-12-22 06:30:51,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44848 to 42795. [2020-12-22 06:30:51,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42795 states. [2020-12-22 06:30:51,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42795 states to 42795 states and 76223 transitions. [2020-12-22 06:30:51,581 INFO L78 Accepts]: Start accepts. Automaton has 42795 states and 76223 transitions. Word has length 107 [2020-12-22 06:30:51,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:51,582 INFO L481 AbstractCegarLoop]: Abstraction has 42795 states and 76223 transitions. [2020-12-22 06:30:51,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 06:30:51,582 INFO L276 IsEmpty]: Start isEmpty. Operand 42795 states and 76223 transitions. [2020-12-22 06:30:51,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 06:30:51,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:51,616 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:30:51,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 06:30:51,617 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:30:51,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:51,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1504811654, now seen corresponding path program 1 times [2020-12-22 06:30:51,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:51,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863720763] [2020-12-22 06:30:51,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:51,769 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:30:51,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863720763] [2020-12-22 06:30:51,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:51,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 06:30:51,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675788526] [2020-12-22 06:30:51,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 06:30:51,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:51,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 06:30:51,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:30:51,771 INFO L87 Difference]: Start difference. First operand 42795 states and 76223 transitions. Second operand 11 states. [2020-12-22 06:30:59,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:59,908 INFO L93 Difference]: Finished difference Result 65342 states and 111338 transitions. [2020-12-22 06:30:59,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-12-22 06:30:59,908 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 109 [2020-12-22 06:30:59,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:59,978 INFO L225 Difference]: With dead ends: 65342 [2020-12-22 06:30:59,979 INFO L226 Difference]: Without dead ends: 63121 [2020-12-22 06:30:59,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=575, Invalid=1777, Unknown=0, NotChecked=0, Total=2352 [2020-12-22 06:31:00,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63121 states. [2020-12-22 06:31:02,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63121 to 43240. [2020-12-22 06:31:02,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43240 states. [2020-12-22 06:31:02,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43240 states to 43240 states and 76909 transitions. [2020-12-22 06:31:02,578 INFO L78 Accepts]: Start accepts. Automaton has 43240 states and 76909 transitions. Word has length 109 [2020-12-22 06:31:02,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:31:02,578 INFO L481 AbstractCegarLoop]: Abstraction has 43240 states and 76909 transitions. [2020-12-22 06:31:02,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 06:31:02,578 INFO L276 IsEmpty]: Start isEmpty. Operand 43240 states and 76909 transitions. [2020-12-22 06:31:02,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 06:31:02,609 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:31:02,610 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:31:02,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 06:31:02,610 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:31:02,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:31:02,610 INFO L82 PathProgramCache]: Analyzing trace with hash -408798828, now seen corresponding path program 1 times [2020-12-22 06:31:02,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:31:02,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918670735] [2020-12-22 06:31:02,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:31:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:31:02,715 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:31:02,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918670735] [2020-12-22 06:31:02,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:31:02,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 06:31:02,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565192823] [2020-12-22 06:31:02,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 06:31:02,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:31:02,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 06:31:02,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:31:02,717 INFO L87 Difference]: Start difference. First operand 43240 states and 76909 transitions. Second operand 8 states. [2020-12-22 06:31:05,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:31:05,983 INFO L93 Difference]: Finished difference Result 49510 states and 86616 transitions. [2020-12-22 06:31:05,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 06:31:05,983 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 109 [2020-12-22 06:31:05,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:31:06,036 INFO L225 Difference]: With dead ends: 49510 [2020-12-22 06:31:06,036 INFO L226 Difference]: Without dead ends: 45277 [2020-12-22 06:31:06,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2020-12-22 06:31:06,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45277 states. [2020-12-22 06:31:08,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45277 to 42918. [2020-12-22 06:31:08,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42918 states. [2020-12-22 06:31:08,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42918 states to 42918 states and 76396 transitions. [2020-12-22 06:31:08,473 INFO L78 Accepts]: Start accepts. Automaton has 42918 states and 76396 transitions. Word has length 109 [2020-12-22 06:31:08,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:31:08,473 INFO L481 AbstractCegarLoop]: Abstraction has 42918 states and 76396 transitions. [2020-12-22 06:31:08,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 06:31:08,473 INFO L276 IsEmpty]: Start isEmpty. Operand 42918 states and 76396 transitions. [2020-12-22 06:31:08,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 06:31:08,508 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:31:08,508 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:31:08,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 06:31:08,508 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:31:08,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:31:08,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1470534065, now seen corresponding path program 1 times [2020-12-22 06:31:08,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:31:08,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728219856] [2020-12-22 06:31:08,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:31:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:31:08,682 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:31:08,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728219856] [2020-12-22 06:31:08,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:31:08,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 06:31:08,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081286463] [2020-12-22 06:31:08,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 06:31:08,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:31:08,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 06:31:08,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-22 06:31:08,684 INFO L87 Difference]: Start difference. First operand 42918 states and 76396 transitions. Second operand 10 states. [2020-12-22 06:31:14,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:31:14,132 INFO L93 Difference]: Finished difference Result 53437 states and 92836 transitions. [2020-12-22 06:31:14,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-22 06:31:14,132 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 110 [2020-12-22 06:31:14,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:31:14,196 INFO L225 Difference]: With dead ends: 53437 [2020-12-22 06:31:14,196 INFO L226 Difference]: Without dead ends: 51082 [2020-12-22 06:31:14,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=383, Invalid=949, Unknown=0, NotChecked=0, Total=1332 [2020-12-22 06:31:14,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51082 states. [2020-12-22 06:31:16,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51082 to 43089. [2020-12-22 06:31:16,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43089 states. [2020-12-22 06:31:16,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43089 states to 43089 states and 76651 transitions. [2020-12-22 06:31:16,775 INFO L78 Accepts]: Start accepts. Automaton has 43089 states and 76651 transitions. Word has length 110 [2020-12-22 06:31:16,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:31:16,776 INFO L481 AbstractCegarLoop]: Abstraction has 43089 states and 76651 transitions. [2020-12-22 06:31:16,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 06:31:16,776 INFO L276 IsEmpty]: Start isEmpty. Operand 43089 states and 76651 transitions. [2020-12-22 06:31:16,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 06:31:16,810 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:31:16,811 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:31:16,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 06:31:16,811 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:31:16,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:31:16,811 INFO L82 PathProgramCache]: Analyzing trace with hash 156169917, now seen corresponding path program 1 times [2020-12-22 06:31:16,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:31:16,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317741146] [2020-12-22 06:31:16,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:31:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:31:17,005 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:31:17,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317741146] [2020-12-22 06:31:17,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424979981] [2020-12-22 06:31:17,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 06:31:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:31:17,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 1190 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 06:31:17,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 06:31:17,789 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2020-12-22 06:31:17,841 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:31:17,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 06:31:17,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 15 [2020-12-22 06:31:17,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178748313] [2020-12-22 06:31:17,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 06:31:17,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:31:17,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 06:31:17,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-12-22 06:31:17,843 INFO L87 Difference]: Start difference. First operand 43089 states and 76651 transitions. Second operand 15 states.