/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 02:09:08,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 02:09:08,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 02:09:08,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 02:09:08,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 02:09:08,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 02:09:08,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 02:09:08,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 02:09:08,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 02:09:08,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 02:09:08,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 02:09:08,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 02:09:08,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 02:09:08,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 02:09:08,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 02:09:08,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 02:09:08,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 02:09:08,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 02:09:08,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 02:09:08,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 02:09:08,527 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 02:09:08,539 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 02:09:08,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 02:09:08,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 02:09:08,542 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 02:09:08,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 02:09:08,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 02:09:08,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 02:09:08,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 02:09:08,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 02:09:08,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 02:09:08,543 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 02:09:08,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 02:09:08,544 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 02:09:08,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 02:09:08,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 02:09:08,544 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 02:09:08,545 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 02:09:08,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 02:09:08,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 02:09:08,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 02:09:08,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 02:09:08,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 02:09:08,546 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 02:09:08,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 02:09:08,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 02:09:08,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 02:09:08,966 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 02:09:08,967 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 02:09:08,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label45.c [2020-10-24 02:09:09,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9192f7a9/7413c9f3bfd747bdb61017021f6181ff/FLAG58a506f09 [2020-10-24 02:09:09,953 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 02:09:09,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label45.c [2020-10-24 02:09:09,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9192f7a9/7413c9f3bfd747bdb61017021f6181ff/FLAG58a506f09 [2020-10-24 02:09:10,141 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9192f7a9/7413c9f3bfd747bdb61017021f6181ff [2020-10-24 02:09:10,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 02:09:10,151 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 02:09:10,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 02:09:10,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 02:09:10,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 02:09:10,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:09:10" (1/1) ... [2020-10-24 02:09:10,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23fecc52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:10, skipping insertion in model container [2020-10-24 02:09:10,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:09:10" (1/1) ... [2020-10-24 02:09:10,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 02:09:10,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 02:09:10,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:09:10,782 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 02:09:11,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:09:11,055 INFO L208 MainTranslator]: Completed translation [2020-10-24 02:09:11,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:11 WrapperNode [2020-10-24 02:09:11,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 02:09:11,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 02:09:11,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 02:09:11,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 02:09:11,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:11" (1/1) ... [2020-10-24 02:09:11,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:11" (1/1) ... [2020-10-24 02:09:11,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:11" (1/1) ... [2020-10-24 02:09:11,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:11" (1/1) ... [2020-10-24 02:09:11,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:11" (1/1) ... [2020-10-24 02:09:11,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:11" (1/1) ... [2020-10-24 02:09:11,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:11" (1/1) ... [2020-10-24 02:09:11,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 02:09:11,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 02:09:11,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 02:09:11,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 02:09:11,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:11" (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 [2020-10-24 02:09:11,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 02:09:11,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 02:09:11,326 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 02:09:11,327 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-24 02:09:11,327 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 02:09:11,327 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-24 02:09:11,328 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 02:09:11,328 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 02:09:11,328 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 02:09:11,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 02:09:11,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 02:09:11,329 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-24 02:09:11,329 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 02:09:11,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 02:09:11,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 02:09:11,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 02:09:11,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 02:09:11,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 02:09:11,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 02:09:13,043 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 02:09:13,043 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-24 02:09:13,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:09:13 BoogieIcfgContainer [2020-10-24 02:09:13,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 02:09:13,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 02:09:13,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 02:09:13,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 02:09:13,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:09:10" (1/3) ... [2020-10-24 02:09:13,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b5a71fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:09:13, skipping insertion in model container [2020-10-24 02:09:13,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:11" (2/3) ... [2020-10-24 02:09:13,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b5a71fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:09:13, skipping insertion in model container [2020-10-24 02:09:13,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:09:13" (3/3) ... [2020-10-24 02:09:13,064 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem10_label45.c [2020-10-24 02:09:13,077 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 02:09:13,084 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 02:09:13,098 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 02:09:13,137 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 02:09:13,138 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 02:09:13,138 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 02:09:13,138 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 02:09:13,138 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 02:09:13,138 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 02:09:13,138 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 02:09:13,139 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 02:09:13,167 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states. [2020-10-24 02:09:13,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-24 02:09:13,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:09:13,181 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] [2020-10-24 02:09:13,182 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:09:13,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:09:13,189 INFO L82 PathProgramCache]: Analyzing trace with hash -2120148208, now seen corresponding path program 1 times [2020-10-24 02:09:13,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:09:13,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019937508] [2020-10-24 02:09:13,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:09:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:13,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:09:13,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:13,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:09:13,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019937508] [2020-10-24 02:09:13,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:09:13,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 02:09:13,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662562295] [2020-10-24 02:09:13,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 02:09:13,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:09:13,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 02:09:13,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 02:09:13,784 INFO L87 Difference]: Start difference. First operand 468 states. Second operand 4 states. [2020-10-24 02:09:16,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:09:16,513 INFO L93 Difference]: Finished difference Result 1102 states and 1528 transitions. [2020-10-24 02:09:16,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-24 02:09:16,516 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-24 02:09:16,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:09:16,541 INFO L225 Difference]: With dead ends: 1102 [2020-10-24 02:09:16,541 INFO L226 Difference]: Without dead ends: 584 [2020-10-24 02:09:16,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 02:09:16,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2020-10-24 02:09:16,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 554. [2020-10-24 02:09:16,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2020-10-24 02:09:16,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 651 transitions. [2020-10-24 02:09:16,750 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 651 transitions. Word has length 66 [2020-10-24 02:09:16,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:09:16,751 INFO L481 AbstractCegarLoop]: Abstraction has 554 states and 651 transitions. [2020-10-24 02:09:16,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 02:09:16,751 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 651 transitions. [2020-10-24 02:09:16,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-24 02:09:16,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:09:16,759 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:09:16,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 02:09:16,759 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:09:16,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:09:16,760 INFO L82 PathProgramCache]: Analyzing trace with hash -2113440394, now seen corresponding path program 1 times [2020-10-24 02:09:16,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:09:16,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019639609] [2020-10-24 02:09:16,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:09:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:17,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:09:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:17,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:09:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:17,131 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:09:17,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019639609] [2020-10-24 02:09:17,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:09:17,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-24 02:09:17,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017177609] [2020-10-24 02:09:17,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 02:09:17,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:09:17,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 02:09:17,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 02:09:17,138 INFO L87 Difference]: Start difference. First operand 554 states and 651 transitions. Second operand 5 states. [2020-10-24 02:09:19,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:09:19,634 INFO L93 Difference]: Finished difference Result 1257 states and 1537 transitions. [2020-10-24 02:09:19,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 02:09:19,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-24 02:09:19,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:09:19,648 INFO L225 Difference]: With dead ends: 1257 [2020-10-24 02:09:19,649 INFO L226 Difference]: Without dead ends: 726 [2020-10-24 02:09:19,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-24 02:09:19,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2020-10-24 02:09:19,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 706. [2020-10-24 02:09:19,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-10-24 02:09:19,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 816 transitions. [2020-10-24 02:09:19,798 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 816 transitions. Word has length 145 [2020-10-24 02:09:19,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:09:19,802 INFO L481 AbstractCegarLoop]: Abstraction has 706 states and 816 transitions. [2020-10-24 02:09:19,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 02:09:19,802 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 816 transitions. [2020-10-24 02:09:19,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-24 02:09:19,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:09:19,814 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:09:19,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 02:09:19,815 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:09:19,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:09:19,816 INFO L82 PathProgramCache]: Analyzing trace with hash -2063857481, now seen corresponding path program 1 times [2020-10-24 02:09:19,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:09:19,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773023772] [2020-10-24 02:09:19,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:09:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:20,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:09:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:20,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:09:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:20,368 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:09:20,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773023772] [2020-10-24 02:09:20,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:09:20,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-24 02:09:20,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445448742] [2020-10-24 02:09:20,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-24 02:09:20,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:09:20,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-24 02:09:20,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-24 02:09:20,371 INFO L87 Difference]: Start difference. First operand 706 states and 816 transitions. Second operand 11 states. [2020-10-24 02:09:20,965 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-24 02:09:21,836 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2020-10-24 02:09:22,340 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2020-10-24 02:09:25,122 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-24 02:09:25,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:09:25,741 INFO L93 Difference]: Finished difference Result 2336 states and 2763 transitions. [2020-10-24 02:09:25,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-24 02:09:25,742 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 152 [2020-10-24 02:09:25,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:09:25,757 INFO L225 Difference]: With dead ends: 2336 [2020-10-24 02:09:25,758 INFO L226 Difference]: Without dead ends: 1653 [2020-10-24 02:09:25,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2020-10-24 02:09:25,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2020-10-24 02:09:26,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1219. [2020-10-24 02:09:26,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1219 states. [2020-10-24 02:09:26,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1439 transitions. [2020-10-24 02:09:26,049 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1439 transitions. Word has length 152 [2020-10-24 02:09:26,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:09:26,051 INFO L481 AbstractCegarLoop]: Abstraction has 1219 states and 1439 transitions. [2020-10-24 02:09:26,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-24 02:09:26,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1439 transitions. [2020-10-24 02:09:26,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-24 02:09:26,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:09:26,055 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:09:26,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 02:09:26,055 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:09:26,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:09:26,056 INFO L82 PathProgramCache]: Analyzing trace with hash -777975276, now seen corresponding path program 1 times [2020-10-24 02:09:26,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:09:26,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746417921] [2020-10-24 02:09:26,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:09:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:26,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:09:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:26,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:09:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:26,565 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 24 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:09:26,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746417921] [2020-10-24 02:09:26,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:09:26,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-24 02:09:26,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898796902] [2020-10-24 02:09:26,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-24 02:09:26,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:09:26,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-24 02:09:26,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-24 02:09:26,569 INFO L87 Difference]: Start difference. First operand 1219 states and 1439 transitions. Second operand 13 states. [2020-10-24 02:09:30,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:09:30,967 INFO L93 Difference]: Finished difference Result 3196 states and 3884 transitions. [2020-10-24 02:09:30,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-24 02:09:30,968 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 155 [2020-10-24 02:09:30,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:09:30,991 INFO L225 Difference]: With dead ends: 3196 [2020-10-24 02:09:30,991 INFO L226 Difference]: Without dead ends: 1957 [2020-10-24 02:09:30,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2020-10-24 02:09:31,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2020-10-24 02:09:31,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 1870. [2020-10-24 02:09:31,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1870 states. [2020-10-24 02:09:31,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 2247 transitions. [2020-10-24 02:09:31,401 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 2247 transitions. Word has length 155 [2020-10-24 02:09:31,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:09:31,401 INFO L481 AbstractCegarLoop]: Abstraction has 1870 states and 2247 transitions. [2020-10-24 02:09:31,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-24 02:09:31,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 2247 transitions. [2020-10-24 02:09:31,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-24 02:09:31,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:09:31,405 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:09:31,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 02:09:31,405 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:09:31,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:09:31,406 INFO L82 PathProgramCache]: Analyzing trace with hash 468898254, now seen corresponding path program 1 times [2020-10-24 02:09:31,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:09:31,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128583010] [2020-10-24 02:09:31,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:09:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:31,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:09:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:31,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:09:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:31,704 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:09:31,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128583010] [2020-10-24 02:09:31,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:09:31,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-24 02:09:31,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974450650] [2020-10-24 02:09:31,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 02:09:31,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:09:31,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 02:09:31,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 02:09:31,707 INFO L87 Difference]: Start difference. First operand 1870 states and 2247 transitions. Second operand 8 states. [2020-10-24 02:09:34,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:09:34,617 INFO L93 Difference]: Finished difference Result 4441 states and 5703 transitions. [2020-10-24 02:09:34,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-24 02:09:34,618 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 171 [2020-10-24 02:09:34,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:09:34,644 INFO L225 Difference]: With dead ends: 4441 [2020-10-24 02:09:34,644 INFO L226 Difference]: Without dead ends: 2744 [2020-10-24 02:09:34,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-24 02:09:34,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2744 states. [2020-10-24 02:09:35,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2744 to 2654. [2020-10-24 02:09:35,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2654 states. [2020-10-24 02:09:35,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2654 states to 2654 states and 3254 transitions. [2020-10-24 02:09:35,231 INFO L78 Accepts]: Start accepts. Automaton has 2654 states and 3254 transitions. Word has length 171 [2020-10-24 02:09:35,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:09:35,231 INFO L481 AbstractCegarLoop]: Abstraction has 2654 states and 3254 transitions. [2020-10-24 02:09:35,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 02:09:35,232 INFO L276 IsEmpty]: Start isEmpty. Operand 2654 states and 3254 transitions. [2020-10-24 02:09:35,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-24 02:09:35,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:09:35,235 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:09:35,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 02:09:35,235 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:09:35,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:09:35,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1798854823, now seen corresponding path program 1 times [2020-10-24 02:09:35,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:09:35,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449450296] [2020-10-24 02:09:35,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:09:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:35,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:09:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:35,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:09:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:35,519 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-24 02:09:35,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449450296] [2020-10-24 02:09:35,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:09:35,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 02:09:35,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340520326] [2020-10-24 02:09:35,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 02:09:35,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:09:35,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 02:09:35,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-24 02:09:35,534 INFO L87 Difference]: Start difference. First operand 2654 states and 3254 transitions. Second operand 7 states. [2020-10-24 02:09:39,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:09:39,785 INFO L93 Difference]: Finished difference Result 4177 states and 5191 transitions. [2020-10-24 02:09:39,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-24 02:09:39,787 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-10-24 02:09:39,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:09:39,816 INFO L225 Difference]: With dead ends: 4177 [2020-10-24 02:09:39,816 INFO L226 Difference]: Without dead ends: 4174 [2020-10-24 02:09:39,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:09:39,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4174 states. [2020-10-24 02:09:40,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4174 to 3120. [2020-10-24 02:09:40,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3120 states. [2020-10-24 02:09:40,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 3955 transitions. [2020-10-24 02:09:40,442 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 3955 transitions. Word has length 190 [2020-10-24 02:09:40,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:09:40,442 INFO L481 AbstractCegarLoop]: Abstraction has 3120 states and 3955 transitions. [2020-10-24 02:09:40,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 02:09:40,443 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 3955 transitions. [2020-10-24 02:09:40,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-24 02:09:40,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:09:40,453 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:09:40,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-24 02:09:40,453 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:09:40,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:09:40,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1009004533, now seen corresponding path program 1 times [2020-10-24 02:09:40,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:09:40,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999570509] [2020-10-24 02:09:40,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:09:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:40,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:09:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:40,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:09:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:40,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-24 02:09:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:40,887 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-24 02:09:40,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999570509] [2020-10-24 02:09:40,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:09:40,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 02:09:40,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160838745] [2020-10-24 02:09:40,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 02:09:40,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:09:40,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 02:09:40,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-24 02:09:40,891 INFO L87 Difference]: Start difference. First operand 3120 states and 3955 transitions. Second operand 7 states. [2020-10-24 02:09:44,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:09:44,587 INFO L93 Difference]: Finished difference Result 6733 states and 8753 transitions. [2020-10-24 02:09:44,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-24 02:09:44,587 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 288 [2020-10-24 02:09:44,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:09:44,616 INFO L225 Difference]: With dead ends: 6733 [2020-10-24 02:09:44,616 INFO L226 Difference]: Without dead ends: 3786 [2020-10-24 02:09:44,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-24 02:09:44,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2020-10-24 02:09:45,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 3738. [2020-10-24 02:09:45,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3738 states. [2020-10-24 02:09:45,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3738 states to 3738 states and 4484 transitions. [2020-10-24 02:09:45,294 INFO L78 Accepts]: Start accepts. Automaton has 3738 states and 4484 transitions. Word has length 288 [2020-10-24 02:09:45,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:09:45,295 INFO L481 AbstractCegarLoop]: Abstraction has 3738 states and 4484 transitions. [2020-10-24 02:09:45,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 02:09:45,295 INFO L276 IsEmpty]: Start isEmpty. Operand 3738 states and 4484 transitions. [2020-10-24 02:09:45,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-24 02:09:45,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:09:45,307 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-24 02:09:45,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-24 02:09:45,307 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:09:45,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:09:45,308 INFO L82 PathProgramCache]: Analyzing trace with hash 563058874, now seen corresponding path program 1 times [2020-10-24 02:09:45,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:09:45,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006587514] [2020-10-24 02:09:45,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:09:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:45,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:09:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:45,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:09:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:45,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-24 02:09:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:45,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:09:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:46,208 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 89 proven. 70 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2020-10-24 02:09:46,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006587514] [2020-10-24 02:09:46,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:09:46,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-24 02:09:46,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770968681] [2020-10-24 02:09:46,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-24 02:09:46,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:09:46,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-24 02:09:46,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-24 02:09:46,211 INFO L87 Difference]: Start difference. First operand 3738 states and 4484 transitions. Second operand 17 states. [2020-10-24 02:09:46,419 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-10-24 02:09:47,131 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2020-10-24 02:09:47,875 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-10-24 02:09:48,382 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-10-24 02:09:55,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:09:55,286 INFO L93 Difference]: Finished difference Result 10646 states and 13011 transitions. [2020-10-24 02:09:55,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-24 02:09:55,287 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 329 [2020-10-24 02:09:55,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:09:55,334 INFO L225 Difference]: With dead ends: 10646 [2020-10-24 02:09:55,335 INFO L226 Difference]: Without dead ends: 7081 [2020-10-24 02:09:55,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=236, Invalid=694, Unknown=0, NotChecked=0, Total=930 [2020-10-24 02:09:55,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7081 states. [2020-10-24 02:09:56,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7081 to 5593. [2020-10-24 02:09:56,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5593 states. [2020-10-24 02:09:56,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5593 states to 5593 states and 6772 transitions. [2020-10-24 02:09:56,564 INFO L78 Accepts]: Start accepts. Automaton has 5593 states and 6772 transitions. Word has length 329 [2020-10-24 02:09:56,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:09:56,565 INFO L481 AbstractCegarLoop]: Abstraction has 5593 states and 6772 transitions. [2020-10-24 02:09:56,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-24 02:09:56,565 INFO L276 IsEmpty]: Start isEmpty. Operand 5593 states and 6772 transitions. [2020-10-24 02:09:56,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-24 02:09:56,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:09:56,574 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:09:56,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-24 02:09:56,575 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:09:56,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:09:56,576 INFO L82 PathProgramCache]: Analyzing trace with hash -271678491, now seen corresponding path program 1 times [2020-10-24 02:09:56,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:09:56,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432698788] [2020-10-24 02:09:56,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:09:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:56,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:09:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:56,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:09:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:56,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-24 02:09:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:57,007 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-24 02:09:57,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432698788] [2020-10-24 02:09:57,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:09:57,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-24 02:09:57,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156834751] [2020-10-24 02:09:57,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 02:09:57,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:09:57,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 02:09:57,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 02:09:57,010 INFO L87 Difference]: Start difference. First operand 5593 states and 6772 transitions. Second operand 5 states. [2020-10-24 02:09:59,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:09:59,974 INFO L93 Difference]: Finished difference Result 11328 states and 14030 transitions. [2020-10-24 02:09:59,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 02:09:59,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 341 [2020-10-24 02:09:59,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:10:00,015 INFO L225 Difference]: With dead ends: 11328 [2020-10-24 02:10:00,016 INFO L226 Difference]: Without dead ends: 6211 [2020-10-24 02:10:00,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-24 02:10:00,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6211 states. [2020-10-24 02:10:01,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6211 to 5597. [2020-10-24 02:10:01,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5597 states. [2020-10-24 02:10:01,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5597 states to 5597 states and 6614 transitions. [2020-10-24 02:10:01,320 INFO L78 Accepts]: Start accepts. Automaton has 5597 states and 6614 transitions. Word has length 341 [2020-10-24 02:10:01,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:10:01,321 INFO L481 AbstractCegarLoop]: Abstraction has 5597 states and 6614 transitions. [2020-10-24 02:10:01,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 02:10:01,322 INFO L276 IsEmpty]: Start isEmpty. Operand 5597 states and 6614 transitions. [2020-10-24 02:10:01,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-10-24 02:10:01,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:10:01,334 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:10:01,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-24 02:10:01,334 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:10:01,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:10:01,335 INFO L82 PathProgramCache]: Analyzing trace with hash -618012515, now seen corresponding path program 1 times [2020-10-24 02:10:01,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:10:01,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423571591] [2020-10-24 02:10:01,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:10:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:01,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:10:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:01,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:10:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:01,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-24 02:10:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:01,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:10:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:01,802 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-24 02:10:01,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423571591] [2020-10-24 02:10:01,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:10:01,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 02:10:01,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054335605] [2020-10-24 02:10:01,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 02:10:01,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:10:01,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 02:10:01,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-24 02:10:01,805 INFO L87 Difference]: Start difference. First operand 5597 states and 6614 transitions. Second operand 7 states. [2020-10-24 02:10:06,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:10:06,426 INFO L93 Difference]: Finished difference Result 11577 states and 13679 transitions. [2020-10-24 02:10:06,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-24 02:10:06,427 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 383 [2020-10-24 02:10:06,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:10:06,460 INFO L225 Difference]: With dead ends: 11577 [2020-10-24 02:10:06,460 INFO L226 Difference]: Without dead ends: 6456 [2020-10-24 02:10:06,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-24 02:10:06,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2020-10-24 02:10:07,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 6282. [2020-10-24 02:10:07,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6282 states. [2020-10-24 02:10:07,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6282 states to 6282 states and 7099 transitions. [2020-10-24 02:10:07,751 INFO L78 Accepts]: Start accepts. Automaton has 6282 states and 7099 transitions. Word has length 383 [2020-10-24 02:10:07,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:10:07,752 INFO L481 AbstractCegarLoop]: Abstraction has 6282 states and 7099 transitions. [2020-10-24 02:10:07,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 02:10:07,752 INFO L276 IsEmpty]: Start isEmpty. Operand 6282 states and 7099 transitions. [2020-10-24 02:10:07,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-10-24 02:10:07,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:10:07,763 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:10:07,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-24 02:10:07,764 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:10:07,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:10:07,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1749640740, now seen corresponding path program 1 times [2020-10-24 02:10:07,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:10:07,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727014934] [2020-10-24 02:10:07,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:10:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:07,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:10:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:07,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:10:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:08,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-24 02:10:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:08,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-24 02:10:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:08,206 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 287 proven. 16 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-24 02:10:08,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727014934] [2020-10-24 02:10:08,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:10:08,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 02:10:08,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91877670] [2020-10-24 02:10:08,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 02:10:08,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:10:08,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 02:10:08,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:10:08,208 INFO L87 Difference]: Start difference. First operand 6282 states and 7099 transitions. Second operand 10 states. [2020-10-24 02:10:08,822 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-24 02:10:14,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:10:14,199 INFO L93 Difference]: Finished difference Result 14643 states and 16587 transitions. [2020-10-24 02:10:14,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-24 02:10:14,206 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 392 [2020-10-24 02:10:14,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:10:14,238 INFO L225 Difference]: With dead ends: 14643 [2020-10-24 02:10:14,238 INFO L226 Difference]: Without dead ends: 6311 [2020-10-24 02:10:14,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-24 02:10:14,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6311 states. [2020-10-24 02:10:15,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6311 to 5405. [2020-10-24 02:10:15,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5405 states. [2020-10-24 02:10:15,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5405 states to 5405 states and 5833 transitions. [2020-10-24 02:10:15,483 INFO L78 Accepts]: Start accepts. Automaton has 5405 states and 5833 transitions. Word has length 392 [2020-10-24 02:10:15,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:10:15,484 INFO L481 AbstractCegarLoop]: Abstraction has 5405 states and 5833 transitions. [2020-10-24 02:10:15,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 02:10:15,484 INFO L276 IsEmpty]: Start isEmpty. Operand 5405 states and 5833 transitions. [2020-10-24 02:10:15,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-10-24 02:10:15,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:10:15,495 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2020-10-24 02:10:15,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-24 02:10:15,495 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:10:15,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:10:15,496 INFO L82 PathProgramCache]: Analyzing trace with hash -974221724, now seen corresponding path program 1 times [2020-10-24 02:10:15,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:10:15,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064382722] [2020-10-24 02:10:15,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:10:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:15,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:10:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:15,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:10:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:15,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-24 02:10:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:15,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-24 02:10:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:15,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-10-24 02:10:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:16,435 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 449 proven. 42 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-24 02:10:16,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064382722] [2020-10-24 02:10:16,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:10:16,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-24 02:10:16,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031498069] [2020-10-24 02:10:16,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-24 02:10:16,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:10:16,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-24 02:10:16,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-24 02:10:16,440 INFO L87 Difference]: Start difference. First operand 5405 states and 5833 transitions. Second operand 15 states. [2020-10-24 02:10:22,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:10:22,635 INFO L93 Difference]: Finished difference Result 12224 states and 13277 transitions. [2020-10-24 02:10:22,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-24 02:10:22,636 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 412 [2020-10-24 02:10:22,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:10:22,670 INFO L225 Difference]: With dead ends: 12224 [2020-10-24 02:10:22,670 INFO L226 Difference]: Without dead ends: 7445 [2020-10-24 02:10:22,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2020-10-24 02:10:22,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7445 states. [2020-10-24 02:10:24,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7445 to 6340. [2020-10-24 02:10:24,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6340 states. [2020-10-24 02:10:24,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6340 states to 6340 states and 6862 transitions. [2020-10-24 02:10:24,094 INFO L78 Accepts]: Start accepts. Automaton has 6340 states and 6862 transitions. Word has length 412 [2020-10-24 02:10:24,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:10:24,095 INFO L481 AbstractCegarLoop]: Abstraction has 6340 states and 6862 transitions. [2020-10-24 02:10:24,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-24 02:10:24,096 INFO L276 IsEmpty]: Start isEmpty. Operand 6340 states and 6862 transitions. [2020-10-24 02:10:24,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2020-10-24 02:10:24,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:10:24,112 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:10:24,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-24 02:10:24,113 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:10:24,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:10:24,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1446303913, now seen corresponding path program 1 times [2020-10-24 02:10:24,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:10:24,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301796610] [2020-10-24 02:10:24,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:10:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:24,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:10:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:24,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:10:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:24,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-24 02:10:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:24,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:10:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:24,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2020-10-24 02:10:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:25,409 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 382 proven. 253 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-24 02:10:25,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301796610] [2020-10-24 02:10:25,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:10:25,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-24 02:10:25,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512807722] [2020-10-24 02:10:25,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-24 02:10:25,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:10:25,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-24 02:10:25,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2020-10-24 02:10:25,413 INFO L87 Difference]: Start difference. First operand 6340 states and 6862 transitions. Second operand 21 states. [2020-10-24 02:10:26,243 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2020-10-24 02:10:26,446 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-10-24 02:10:31,234 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-10-24 02:10:37,953 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-24 02:10:39,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:10:39,372 INFO L93 Difference]: Finished difference Result 15893 states and 17390 transitions. [2020-10-24 02:10:39,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-24 02:10:39,372 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 516 [2020-10-24 02:10:39,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:10:39,382 INFO L225 Difference]: With dead ends: 15893 [2020-10-24 02:10:39,382 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 02:10:39,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1655 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=939, Invalid=4173, Unknown=0, NotChecked=0, Total=5112 [2020-10-24 02:10:39,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 02:10:39,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 02:10:39,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 02:10:39,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 02:10:39,407 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 516 [2020-10-24 02:10:39,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:10:39,408 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 02:10:39,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-24 02:10:39,408 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 02:10:39,408 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 02:10:39,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-24 02:10:39,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 02:10:42,845 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-24 02:10:45,002 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 98 [2020-10-24 02:11:22,485 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 350 DAG size of output: 246 [2020-10-24 02:11:37,351 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 350 DAG size of output: 246 [2020-10-24 02:11:50,523 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 350 DAG size of output: 246 [2020-10-24 02:11:50,728 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 350 DAG size of output: 246 [2020-10-24 02:11:50,933 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 350 DAG size of output: 246 [2020-10-24 02:12:10,034 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 350 DAG size of output: 246 [2020-10-24 02:12:18,872 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 348 DAG size of output: 235 [2020-10-24 02:12:19,877 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 348 DAG size of output: 235 [2020-10-24 02:12:20,876 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 348 DAG size of output: 235 [2020-10-24 02:12:21,422 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 350 DAG size of output: 246 [2020-10-24 02:12:48,608 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 169 [2020-10-24 02:12:49,209 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 170 [2020-10-24 02:12:49,666 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 169 [2020-10-24 02:12:50,186 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 170 [2020-10-24 02:12:51,086 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 169 [2020-10-24 02:12:51,932 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 169 [2020-10-24 02:12:52,532 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 170 [2020-10-24 02:12:52,970 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 169 [2020-10-24 02:12:53,483 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 170 [2020-10-24 02:12:54,375 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 169 [2020-10-24 02:13:58,913 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 250 DAG size of output: 77 [2020-10-24 02:14:00,903 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 259 DAG size of output: 88 [2020-10-24 02:14:02,675 WARN L193 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 291 DAG size of output: 78 [2020-10-24 02:14:04,226 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 249 DAG size of output: 75 [2020-10-24 02:14:05,740 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 285 DAG size of output: 76 [2020-10-24 02:14:07,567 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 295 DAG size of output: 77 [2020-10-24 02:14:09,604 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 261 DAG size of output: 88 [2020-10-24 02:14:11,310 WARN L193 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 286 DAG size of output: 85 [2020-10-24 02:14:13,224 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 297 DAG size of output: 77 [2020-10-24 02:14:15,218 WARN L193 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 294 DAG size of output: 84 [2020-10-24 02:14:19,162 WARN L193 SmtUtils]: Spent 3.93 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:14:23,081 WARN L193 SmtUtils]: Spent 3.90 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:14:24,626 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 255 DAG size of output: 81 [2020-10-24 02:14:26,702 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 262 DAG size of output: 85 [2020-10-24 02:14:28,345 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 256 DAG size of output: 82 [2020-10-24 02:14:30,169 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 265 DAG size of output: 77 [2020-10-24 02:14:31,910 WARN L193 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 264 DAG size of output: 81 [2020-10-24 02:14:33,731 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 255 DAG size of output: 77 [2020-10-24 02:14:37,984 WARN L193 SmtUtils]: Spent 4.23 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:14:39,803 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 254 DAG size of output: 78 [2020-10-24 02:14:42,010 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 261 DAG size of output: 88 [2020-10-24 02:14:43,721 WARN L193 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 254 DAG size of output: 82 [2020-10-24 02:14:47,812 WARN L193 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:14:51,959 WARN L193 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:14:56,045 WARN L193 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:15:00,137 WARN L193 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:15:01,976 WARN L193 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 294 DAG size of output: 80 [2020-10-24 02:15:03,866 WARN L193 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 259 DAG size of output: 84 [2020-10-24 02:15:05,752 WARN L193 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 256 DAG size of output: 89 [2020-10-24 02:15:07,291 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 254 DAG size of output: 81 [2020-10-24 02:15:08,891 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 250 DAG size of output: 76 [2020-10-24 02:15:11,066 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 308 DAG size of output: 77 [2020-10-24 02:15:12,897 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 281 DAG size of output: 76 [2020-10-24 02:15:16,912 WARN L193 SmtUtils]: Spent 4.00 s on a formula simplification. DAG size of input: 437 DAG size of output: 79 [2020-10-24 02:15:20,778 WARN L193 SmtUtils]: Spent 3.85 s on a formula simplification. DAG size of input: 437 DAG size of output: 79 [2020-10-24 02:15:24,597 WARN L193 SmtUtils]: Spent 3.80 s on a formula simplification. DAG size of input: 437 DAG size of output: 79 [2020-10-24 02:15:26,551 WARN L193 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 281 DAG size of output: 76 [2020-10-24 02:15:28,498 WARN L193 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 281 DAG size of output: 76 [2020-10-24 02:15:30,435 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 281 DAG size of output: 76 [2020-10-24 02:15:34,420 WARN L193 SmtUtils]: Spent 3.97 s on a formula simplification. DAG size of input: 437 DAG size of output: 79 [2020-10-24 02:15:36,300 WARN L193 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 281 DAG size of output: 76 [2020-10-24 02:15:38,198 WARN L193 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 281 DAG size of output: 76 [2020-10-24 02:15:42,155 WARN L193 SmtUtils]: Spent 3.94 s on a formula simplification. DAG size of input: 439 DAG size of output: 74 [2020-10-24 02:15:44,022 WARN L193 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 281 DAG size of output: 76 [2020-10-24 02:15:47,919 WARN L193 SmtUtils]: Spent 3.88 s on a formula simplification. DAG size of input: 439 DAG size of output: 74 [2020-10-24 02:15:49,705 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 282 DAG size of output: 76 [2020-10-24 02:15:53,679 WARN L193 SmtUtils]: Spent 3.96 s on a formula simplification. DAG size of input: 437 DAG size of output: 79 [2020-10-24 02:15:57,599 WARN L193 SmtUtils]: Spent 3.87 s on a formula simplification. DAG size of input: 437 DAG size of output: 79 [2020-10-24 02:16:01,441 WARN L193 SmtUtils]: Spent 3.83 s on a formula simplification. DAG size of input: 437 DAG size of output: 79 [2020-10-24 02:16:03,168 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 282 DAG size of output: 76 [2020-10-24 02:16:04,938 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 282 DAG size of output: 76 [2020-10-24 02:16:06,749 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 281 DAG size of output: 76 [2020-10-24 02:16:10,583 WARN L193 SmtUtils]: Spent 3.82 s on a formula simplification. DAG size of input: 437 DAG size of output: 79 [2020-10-24 02:16:14,406 WARN L193 SmtUtils]: Spent 3.81 s on a formula simplification. DAG size of input: 439 DAG size of output: 74 [2020-10-24 02:16:16,331 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 256 DAG size of output: 89 [2020-10-24 02:16:18,402 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 290 DAG size of output: 75 [2020-10-24 02:16:20,448 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 259 DAG size of output: 88 [2020-10-24 02:16:22,162 WARN L193 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 264 DAG size of output: 80 [2020-10-24 02:16:23,858 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 253 DAG size of output: 84 [2020-10-24 02:16:25,542 WARN L193 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 255 DAG size of output: 85 [2020-10-24 02:16:27,326 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 248 DAG size of output: 75 [2020-10-24 02:16:29,387 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 262 DAG size of output: 85 [2020-10-24 02:16:31,033 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 259 DAG size of output: 76 [2020-10-24 02:16:32,862 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 291 DAG size of output: 79 [2020-10-24 02:16:34,612 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 251 DAG size of output: 78 [2020-10-24 02:16:36,436 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 257 DAG size of output: 88 [2020-10-24 02:16:40,487 WARN L193 SmtUtils]: Spent 4.03 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:16:44,527 WARN L193 SmtUtils]: Spent 4.02 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:16:46,641 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 295 DAG size of output: 80 [2020-10-24 02:16:48,711 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 259 DAG size of output: 88 [2020-10-24 02:16:52,734 WARN L193 SmtUtils]: Spent 4.01 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:16:54,427 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 287 DAG size of output: 78 [2020-10-24 02:16:58,461 WARN L193 SmtUtils]: Spent 4.02 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:17:00,447 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 297 DAG size of output: 77 [2020-10-24 02:17:04,481 WARN L193 SmtUtils]: Spent 4.02 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:17:06,461 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 294 DAG size of output: 80 [2020-10-24 02:17:08,436 WARN L193 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 257 DAG size of output: 90 [2020-10-24 02:17:10,584 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 291 DAG size of output: 87 [2020-10-24 02:17:12,177 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 250 DAG size of output: 75 [2020-10-24 02:17:13,853 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 258 DAG size of output: 78 [2020-10-24 02:17:15,469 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 249 DAG size of output: 77 [2020-10-24 02:17:17,166 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 254 DAG size of output: 75 [2020-10-24 02:17:18,880 WARN L193 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 254 DAG size of output: 87 [2020-10-24 02:17:20,520 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 249 DAG size of output: 77 [2020-10-24 02:17:22,639 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 258 DAG size of output: 86 [2020-10-24 02:17:24,361 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 252 DAG size of output: 86 [2020-10-24 02:17:26,059 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 254 DAG size of output: 81 [2020-10-24 02:17:27,624 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 247 DAG size of output: 76 [2020-10-24 02:17:29,478 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 281 DAG size of output: 76 [2020-10-24 02:17:31,329 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 281 DAG size of output: 76 [2020-10-24 02:17:33,565 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 296 DAG size of output: 85 [2020-10-24 02:17:35,677 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 308 DAG size of output: 77 [2020-10-24 02:17:39,757 WARN L193 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:17:41,478 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 257 DAG size of output: 78 [2020-10-24 02:17:43,408 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 262 DAG size of output: 99 [2020-10-24 02:17:45,176 WARN L193 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 257 DAG size of output: 82 [2020-10-24 02:17:46,898 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 283 DAG size of output: 78 [2020-10-24 02:17:48,669 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 251 DAG size of output: 78 [2020-10-24 02:17:50,887 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 310 DAG size of output: 80 [2020-10-24 02:17:53,380 WARN L193 SmtUtils]: Spent 2.48 s on a formula simplification. DAG size of input: 260 DAG size of output: 93 [2020-10-24 02:17:57,501 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:18:01,631 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:18:02,646 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 216 DAG size of output: 57 [2020-10-24 02:18:06,747 WARN L193 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:18:08,472 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 252 DAG size of output: 79 [2020-10-24 02:18:10,345 WARN L193 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 281 DAG size of output: 76 [2020-10-24 02:18:14,330 WARN L193 SmtUtils]: Spent 3.97 s on a formula simplification. DAG size of input: 437 DAG size of output: 79 [2020-10-24 02:18:18,476 WARN L193 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:18:20,279 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 282 DAG size of output: 76 [2020-10-24 02:18:24,400 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:18:28,548 WARN L193 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:18:30,456 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 295 DAG size of output: 77 [2020-10-24 02:18:32,240 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 265 DAG size of output: 77 [2020-10-24 02:18:34,219 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 257 DAG size of output: 90 [2020-10-24 02:18:35,826 WARN L193 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 253 DAG size of output: 79 [2020-10-24 02:18:37,503 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 252 DAG size of output: 83 [2020-10-24 02:18:39,504 WARN L193 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 299 DAG size of output: 78 [2020-10-24 02:18:41,380 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 281 DAG size of output: 76 [2020-10-24 02:18:45,503 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 437 DAG size of output: 79 [2020-10-24 02:18:49,426 WARN L193 SmtUtils]: Spent 3.91 s on a formula simplification. DAG size of input: 439 DAG size of output: 74 [2020-10-24 02:18:53,459 WARN L193 SmtUtils]: Spent 4.02 s on a formula simplification. DAG size of input: 437 DAG size of output: 79 [2020-10-24 02:18:55,360 WARN L193 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 281 DAG size of output: 76 [2020-10-24 02:18:57,248 WARN L193 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 281 DAG size of output: 76 [2020-10-24 02:18:59,150 WARN L193 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 281 DAG size of output: 76 [2020-10-24 02:19:03,173 WARN L193 SmtUtils]: Spent 4.01 s on a formula simplification. DAG size of input: 437 DAG size of output: 79 [2020-10-24 02:19:05,882 WARN L193 SmtUtils]: Spent 2.70 s on a formula simplification. DAG size of input: 336 DAG size of output: 87 [2020-10-24 02:19:10,092 WARN L193 SmtUtils]: Spent 4.19 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:19:11,800 WARN L193 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 252 DAG size of output: 81 [2020-10-24 02:19:13,521 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 247 DAG size of output: 77 [2020-10-24 02:19:17,731 WARN L193 SmtUtils]: Spent 4.19 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:19:21,941 WARN L193 SmtUtils]: Spent 4.19 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:19:22,985 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 216 DAG size of output: 57 [2020-10-24 02:19:24,703 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 261 DAG size of output: 79 [2020-10-24 02:19:26,744 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 256 DAG size of output: 90 [2020-10-24 02:19:28,943 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 298 DAG size of output: 77 [2020-10-24 02:19:33,142 WARN L193 SmtUtils]: Spent 4.18 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:19:35,224 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 254 DAG size of output: 83 [2020-10-24 02:19:37,170 WARN L193 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 256 DAG size of output: 93 [2020-10-24 02:19:39,313 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 258 DAG size of output: 78 [2020-10-24 02:19:43,557 WARN L193 SmtUtils]: Spent 4.23 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:19:47,823 WARN L193 SmtUtils]: Spent 4.25 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:19:49,633 WARN L193 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 255 DAG size of output: 91 [2020-10-24 02:19:53,879 WARN L193 SmtUtils]: Spent 4.23 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:19:58,129 WARN L193 SmtUtils]: Spent 4.23 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:19:59,902 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 250 DAG size of output: 85 [2020-10-24 02:20:01,743 WARN L193 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 265 DAG size of output: 74 [2020-10-24 02:20:03,525 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 258 DAG size of output: 81 [2020-10-24 02:20:05,503 WARN L193 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 298 DAG size of output: 77 [2020-10-24 02:20:07,569 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 295 DAG size of output: 79 [2020-10-24 02:20:09,300 WARN L193 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 253 DAG size of output: 77 [2020-10-24 02:20:11,660 WARN L193 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 265 DAG size of output: 87 [2020-10-24 02:20:15,960 WARN L193 SmtUtils]: Spent 4.28 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:20:18,190 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 308 DAG size of output: 77 [2020-10-24 02:20:20,024 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 256 DAG size of output: 77 [2020-10-24 02:20:24,364 WARN L193 SmtUtils]: Spent 4.32 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:20:28,655 WARN L193 SmtUtils]: Spent 4.27 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:20:30,500 WARN L193 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 255 DAG size of output: 82 [2020-10-24 02:20:34,829 WARN L193 SmtUtils]: Spent 4.31 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:20:36,753 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 288 DAG size of output: 76 [2020-10-24 02:20:38,491 WARN L193 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 247 DAG size of output: 75 [2020-10-24 02:20:42,818 WARN L193 SmtUtils]: Spent 4.31 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:20:44,704 WARN L193 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 254 DAG size of output: 82 [2020-10-24 02:20:46,795 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 300 DAG size of output: 80 [2020-10-24 02:20:49,656 WARN L193 SmtUtils]: Spent 2.85 s on a formula simplification. DAG size of input: 336 DAG size of output: 87 [2020-10-24 02:20:50,767 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 216 DAG size of output: 57 [2020-10-24 02:20:51,855 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 216 DAG size of output: 57 [2020-10-24 02:20:52,954 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 216 DAG size of output: 57 [2020-10-24 02:20:54,913 WARN L193 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 282 DAG size of output: 76 [2020-10-24 02:20:56,907 WARN L193 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 281 DAG size of output: 76 [2020-10-24 02:21:01,139 WARN L193 SmtUtils]: Spent 4.21 s on a formula simplification. DAG size of input: 437 DAG size of output: 79 [2020-10-24 02:21:03,132 WARN L193 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 281 DAG size of output: 76 [2020-10-24 02:21:07,390 WARN L193 SmtUtils]: Spent 4.24 s on a formula simplification. DAG size of input: 437 DAG size of output: 79 [2020-10-24 02:21:09,679 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 298 DAG size of output: 77 [2020-10-24 02:21:11,487 WARN L193 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 265 DAG size of output: 81 [2020-10-24 02:21:13,635 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 295 DAG size of output: 79 [2020-10-24 02:21:15,892 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 300 DAG size of output: 76 [2020-10-24 02:21:20,302 WARN L193 SmtUtils]: Spent 4.39 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:21:24,748 WARN L193 SmtUtils]: Spent 4.43 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:21:26,896 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 294 DAG size of output: 80 [2020-10-24 02:21:31,124 WARN L193 SmtUtils]: Spent 4.21 s on a formula simplification. DAG size of input: 439 DAG size of output: 74 [2020-10-24 02:21:33,150 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 281 DAG size of output: 76 [2020-10-24 02:21:37,420 WARN L193 SmtUtils]: Spent 4.25 s on a formula simplification. DAG size of input: 437 DAG size of output: 79 [2020-10-24 02:21:41,601 WARN L193 SmtUtils]: Spent 4.17 s on a formula simplification. DAG size of input: 439 DAG size of output: 74 [2020-10-24 02:21:45,860 WARN L193 SmtUtils]: Spent 4.24 s on a formula simplification. DAG size of input: 437 DAG size of output: 79 [2020-10-24 02:21:47,886 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 281 DAG size of output: 76 [2020-10-24 02:21:52,178 WARN L193 SmtUtils]: Spent 4.28 s on a formula simplification. DAG size of input: 437 DAG size of output: 79 [2020-10-24 02:21:54,127 WARN L193 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 282 DAG size of output: 76 [2020-10-24 02:21:56,135 WARN L193 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 281 DAG size of output: 76 [2020-10-24 02:21:58,167 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 281 DAG size of output: 76 [2020-10-24 02:22:02,491 WARN L193 SmtUtils]: Spent 4.31 s on a formula simplification. DAG size of input: 437 DAG size of output: 79 [2020-10-24 02:22:04,505 WARN L193 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 281 DAG size of output: 76 [2020-10-24 02:22:08,997 WARN L193 SmtUtils]: Spent 4.48 s on a formula simplification. DAG size of input: 502 DAG size of output: 87 [2020-10-24 02:22:11,374 WARN L193 SmtUtils]: Spent 2.37 s on a formula simplification. DAG size of input: 291 DAG size of output: 87 [2020-10-24 02:22:13,435 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 258 DAG size of output: 88 [2020-10-24 02:22:15,492 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 281 DAG size of output: 76 [2020-10-24 02:22:19,816 WARN L193 SmtUtils]: Spent 4.31 s on a formula simplification. DAG size of input: 439 DAG size of output: 74