/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/Problem02_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 01:47:23,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 01:47:23,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 01:47:23,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 01:47:23,951 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 01:47:23,974 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 01:47:23,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 01:47:23,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 01:47:23,979 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 01:47:23,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 01:47:23,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 01:47:23,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 01:47:23,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 01:47:23,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 01:47:23,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 01:47:23,982 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 01:47:23,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 01:47:23,982 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 01:47:23,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 01:47:23,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 01:47:23,983 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 01:47:23,983 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 01:47:23,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 01:47:23,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 01:47:23,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 01:47:23,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 01:47:23,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 01:47:23,984 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 01:47:24,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 01:47:24,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 01:47:24,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 01:47:24,428 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 01:47:24,429 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 01:47:24,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label42.c [2020-10-24 01:47:24,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee00b41d5/866f3a24f69b47ac8da00c2f1652c4d8/FLAGa74a98040 [2020-10-24 01:47:25,190 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 01:47:25,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label42.c [2020-10-24 01:47:25,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee00b41d5/866f3a24f69b47ac8da00c2f1652c4d8/FLAGa74a98040 [2020-10-24 01:47:25,452 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee00b41d5/866f3a24f69b47ac8da00c2f1652c4d8 [2020-10-24 01:47:25,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 01:47:25,464 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 01:47:25,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 01:47:25,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 01:47:25,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 01:47:25,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:47:25" (1/1) ... [2020-10-24 01:47:25,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3616b79a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:47:25, skipping insertion in model container [2020-10-24 01:47:25,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:47:25" (1/1) ... [2020-10-24 01:47:25,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 01:47:25,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 01:47:26,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:47:26,075 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 01:47:26,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:47:26,250 INFO L208 MainTranslator]: Completed translation [2020-10-24 01:47:26,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:47:26 WrapperNode [2020-10-24 01:47:26,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 01:47:26,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 01:47:26,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 01:47:26,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 01:47:26,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:47:26" (1/1) ... [2020-10-24 01:47:26,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:47:26" (1/1) ... [2020-10-24 01:47:26,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:47:26" (1/1) ... [2020-10-24 01:47:26,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:47:26" (1/1) ... [2020-10-24 01:47:26,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:47:26" (1/1) ... [2020-10-24 01:47:26,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:47:26" (1/1) ... [2020-10-24 01:47:26,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:47:26" (1/1) ... [2020-10-24 01:47:26,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 01:47:26,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 01:47:26,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 01:47:26,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 01:47:26,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:47:26" (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 01:47:26,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 01:47:26,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 01:47:26,502 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 01:47:26,502 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-24 01:47:26,502 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 01:47:26,502 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-24 01:47:26,502 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 01:47:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 01:47:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 01:47:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 01:47:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 01:47:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-24 01:47:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 01:47:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 01:47:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 01:47:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 01:47:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 01:47:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 01:47:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 01:47:27,837 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 01:47:27,838 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-24 01:47:27,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:47:27 BoogieIcfgContainer [2020-10-24 01:47:27,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 01:47:27,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 01:47:27,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 01:47:27,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 01:47:27,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:47:25" (1/3) ... [2020-10-24 01:47:27,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@239a9da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:47:27, skipping insertion in model container [2020-10-24 01:47:27,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:47:26" (2/3) ... [2020-10-24 01:47:27,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@239a9da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:47:27, skipping insertion in model container [2020-10-24 01:47:27,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:47:27" (3/3) ... [2020-10-24 01:47:27,856 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label42.c [2020-10-24 01:47:27,868 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 01:47:27,874 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 01:47:27,888 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 01:47:27,925 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 01:47:27,926 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 01:47:27,926 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 01:47:27,926 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 01:47:27,926 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 01:47:27,926 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 01:47:27,926 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 01:47:27,927 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 01:47:27,964 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states. [2020-10-24 01:47:28,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-24 01:47:28,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:47:28,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:28,011 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:47:28,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:47:28,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1131555461, now seen corresponding path program 1 times [2020-10-24 01:47:28,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:47:28,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468002266] [2020-10-24 01:47:28,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:47:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:47:28,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:47:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:47:28,805 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 01:47:28,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468002266] [2020-10-24 01:47:28,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:47:28,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-24 01:47:28,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535601835] [2020-10-24 01:47:28,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 01:47:28,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:47:28,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 01:47:28,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-24 01:47:28,839 INFO L87 Difference]: Start difference. First operand 539 states. Second operand 5 states. [2020-10-24 01:47:33,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:47:33,641 INFO L93 Difference]: Finished difference Result 1674 states and 2279 transitions. [2020-10-24 01:47:33,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-24 01:47:33,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-10-24 01:47:33,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:47:33,671 INFO L225 Difference]: With dead ends: 1674 [2020-10-24 01:47:33,672 INFO L226 Difference]: Without dead ends: 1048 [2020-10-24 01:47:33,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-24 01:47:33,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2020-10-24 01:47:33,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 875. [2020-10-24 01:47:33,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 875 states. [2020-10-24 01:47:33,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1075 transitions. [2020-10-24 01:47:33,915 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1075 transitions. Word has length 135 [2020-10-24 01:47:33,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:47:33,916 INFO L481 AbstractCegarLoop]: Abstraction has 875 states and 1075 transitions. [2020-10-24 01:47:33,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 01:47:33,917 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1075 transitions. [2020-10-24 01:47:33,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-24 01:47:33,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:47:33,937 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 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 01:47:33,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 01:47:33,937 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:47:33,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:47:33,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1773820619, now seen corresponding path program 1 times [2020-10-24 01:47:33,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:47:33,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058571836] [2020-10-24 01:47:33,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:47:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:47:34,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:47:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:47:34,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 01:47:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:47:34,388 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:47:34,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058571836] [2020-10-24 01:47:34,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:47:34,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-24 01:47:34,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175333271] [2020-10-24 01:47:34,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 01:47:34,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:47:34,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 01:47:34,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-24 01:47:34,392 INFO L87 Difference]: Start difference. First operand 875 states and 1075 transitions. Second operand 10 states. [2020-10-24 01:47:34,632 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-24 01:47:35,201 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-10-24 01:47:41,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:47:41,774 INFO L93 Difference]: Finished difference Result 2360 states and 2927 transitions. [2020-10-24 01:47:41,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-24 01:47:41,775 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 153 [2020-10-24 01:47:41,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:47:41,787 INFO L225 Difference]: With dead ends: 2360 [2020-10-24 01:47:41,788 INFO L226 Difference]: Without dead ends: 1515 [2020-10-24 01:47:41,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=207, Invalid=663, Unknown=0, NotChecked=0, Total=870 [2020-10-24 01:47:41,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2020-10-24 01:47:42,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1217. [2020-10-24 01:47:42,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1217 states. [2020-10-24 01:47:42,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1475 transitions. [2020-10-24 01:47:42,044 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1475 transitions. Word has length 153 [2020-10-24 01:47:42,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:47:42,046 INFO L481 AbstractCegarLoop]: Abstraction has 1217 states and 1475 transitions. [2020-10-24 01:47:42,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 01:47:42,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1475 transitions. [2020-10-24 01:47:42,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-24 01:47:42,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:47:42,054 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:47:42,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 01:47:42,054 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:47:42,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:47:42,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1805437949, now seen corresponding path program 1 times [2020-10-24 01:47:42,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:47:42,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395520009] [2020-10-24 01:47:42,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:47:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:47:42,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:47:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:47:42,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 01:47:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:47:42,387 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:47:42,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395520009] [2020-10-24 01:47:42,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:47:42,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-24 01:47:42,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574949432] [2020-10-24 01:47:42,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 01:47:42,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:47:42,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 01:47:42,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 01:47:42,396 INFO L87 Difference]: Start difference. First operand 1217 states and 1475 transitions. Second operand 5 states. [2020-10-24 01:47:45,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:47:45,206 INFO L93 Difference]: Finished difference Result 2452 states and 2978 transitions. [2020-10-24 01:47:45,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 01:47:45,207 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-24 01:47:45,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:47:45,216 INFO L225 Difference]: With dead ends: 2452 [2020-10-24 01:47:45,217 INFO L226 Difference]: Without dead ends: 1265 [2020-10-24 01:47:45,221 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 01:47:45,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2020-10-24 01:47:45,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1179. [2020-10-24 01:47:45,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1179 states. [2020-10-24 01:47:45,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1407 transitions. [2020-10-24 01:47:45,485 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1407 transitions. Word has length 157 [2020-10-24 01:47:45,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:47:45,486 INFO L481 AbstractCegarLoop]: Abstraction has 1179 states and 1407 transitions. [2020-10-24 01:47:45,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 01:47:45,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1407 transitions. [2020-10-24 01:47:45,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-24 01:47:45,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:47:45,491 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:47:45,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 01:47:45,492 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:47:45,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:47:45,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1276118528, now seen corresponding path program 1 times [2020-10-24 01:47:45,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:47:45,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430831239] [2020-10-24 01:47:45,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:47:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:47:45,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:47:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:47:45,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 01:47:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:47:45,708 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:47:45,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430831239] [2020-10-24 01:47:45,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:47:45,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-24 01:47:45,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459111458] [2020-10-24 01:47:45,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:47:45,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:47:45,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:47:45,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:47:45,712 INFO L87 Difference]: Start difference. First operand 1179 states and 1407 transitions. Second operand 7 states. [2020-10-24 01:47:45,921 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-24 01:47:48,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:47:48,803 INFO L93 Difference]: Finished difference Result 3151 states and 3959 transitions. [2020-10-24 01:47:48,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-24 01:47:48,803 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 159 [2020-10-24 01:47:48,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:47:48,820 INFO L225 Difference]: With dead ends: 3151 [2020-10-24 01:47:48,820 INFO L226 Difference]: Without dead ends: 2002 [2020-10-24 01:47:48,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-24 01:47:48,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2020-10-24 01:47:49,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1948. [2020-10-24 01:47:49,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1948 states. [2020-10-24 01:47:49,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2350 transitions. [2020-10-24 01:47:49,226 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2350 transitions. Word has length 159 [2020-10-24 01:47:49,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:47:49,226 INFO L481 AbstractCegarLoop]: Abstraction has 1948 states and 2350 transitions. [2020-10-24 01:47:49,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:47:49,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2350 transitions. [2020-10-24 01:47:49,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-24 01:47:49,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:47:49,234 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:49,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 01:47:49,235 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:47:49,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:47:49,236 INFO L82 PathProgramCache]: Analyzing trace with hash -146615717, now seen corresponding path program 1 times [2020-10-24 01:47:49,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:47:49,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628979824] [2020-10-24 01:47:49,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:47:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:47:49,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:47:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:47:49,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 01:47:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:47:49,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-24 01:47:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:47:49,497 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 42 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-24 01:47:49,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628979824] [2020-10-24 01:47:49,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:47:49,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 01:47:49,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262001108] [2020-10-24 01:47:49,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:47:49,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:47:49,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:47:49,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:47:49,502 INFO L87 Difference]: Start difference. First operand 1948 states and 2350 transitions. Second operand 8 states. [2020-10-24 01:47:53,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:47:53,799 INFO L93 Difference]: Finished difference Result 5289 states and 6713 transitions. [2020-10-24 01:47:53,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-24 01:47:53,801 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 177 [2020-10-24 01:47:53,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:47:53,831 INFO L225 Difference]: With dead ends: 5289 [2020-10-24 01:47:53,831 INFO L226 Difference]: Without dead ends: 3521 [2020-10-24 01:47:53,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-24 01:47:53,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3521 states. [2020-10-24 01:47:54,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3521 to 3499. [2020-10-24 01:47:54,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3499 states. [2020-10-24 01:47:54,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3499 states to 3499 states and 4305 transitions. [2020-10-24 01:47:54,442 INFO L78 Accepts]: Start accepts. Automaton has 3499 states and 4305 transitions. Word has length 177 [2020-10-24 01:47:54,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:47:54,443 INFO L481 AbstractCegarLoop]: Abstraction has 3499 states and 4305 transitions. [2020-10-24 01:47:54,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:47:54,443 INFO L276 IsEmpty]: Start isEmpty. Operand 3499 states and 4305 transitions. [2020-10-24 01:47:54,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-24 01:47:54,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:47:54,456 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:54,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 01:47:54,456 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:47:54,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:47:54,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1540730415, now seen corresponding path program 1 times [2020-10-24 01:47:54,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:47:54,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266196448] [2020-10-24 01:47:54,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:47:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:47:54,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:47:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:47:54,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 01:47:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:47:54,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-24 01:47:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:47:54,786 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 19 proven. 16 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-24 01:47:54,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266196448] [2020-10-24 01:47:54,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:47:54,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 01:47:54,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457096715] [2020-10-24 01:47:54,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:47:54,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:47:54,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:47:54,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:47:54,800 INFO L87 Difference]: Start difference. First operand 3499 states and 4305 transitions. Second operand 7 states. [2020-10-24 01:47:55,054 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-10-24 01:48:00,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:48:00,277 INFO L93 Difference]: Finished difference Result 7994 states and 10053 transitions. [2020-10-24 01:48:00,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-24 01:48:00,284 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 186 [2020-10-24 01:48:00,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:48:00,317 INFO L225 Difference]: With dead ends: 7994 [2020-10-24 01:48:00,317 INFO L226 Difference]: Without dead ends: 4675 [2020-10-24 01:48:00,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-24 01:48:00,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4675 states. [2020-10-24 01:48:01,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4675 to 4555. [2020-10-24 01:48:01,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4555 states. [2020-10-24 01:48:01,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4555 states to 4555 states and 5634 transitions. [2020-10-24 01:48:01,402 INFO L78 Accepts]: Start accepts. Automaton has 4555 states and 5634 transitions. Word has length 186 [2020-10-24 01:48:01,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:48:01,403 INFO L481 AbstractCegarLoop]: Abstraction has 4555 states and 5634 transitions. [2020-10-24 01:48:01,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:48:01,403 INFO L276 IsEmpty]: Start isEmpty. Operand 4555 states and 5634 transitions. [2020-10-24 01:48:01,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-24 01:48:01,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:48:01,417 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:01,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-24 01:48:01,418 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:48:01,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:48:01,418 INFO L82 PathProgramCache]: Analyzing trace with hash -2108550011, now seen corresponding path program 1 times [2020-10-24 01:48:01,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:48:01,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921333552] [2020-10-24 01:48:01,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:48:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:48:01,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:48:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:48:01,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 01:48:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:48:01,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-24 01:48:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:48:01,653 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-24 01:48:01,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921333552] [2020-10-24 01:48:01,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:48:01,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 01:48:01,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527070260] [2020-10-24 01:48:01,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:48:01,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:48:01,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:48:01,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:48:01,656 INFO L87 Difference]: Start difference. First operand 4555 states and 5634 transitions. Second operand 8 states. [2020-10-24 01:48:05,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:48:05,069 INFO L93 Difference]: Finished difference Result 8959 states and 11139 transitions. [2020-10-24 01:48:05,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-24 01:48:05,070 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 190 [2020-10-24 01:48:05,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:48:05,099 INFO L225 Difference]: With dead ends: 8959 [2020-10-24 01:48:05,099 INFO L226 Difference]: Without dead ends: 4584 [2020-10-24 01:48:05,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-24 01:48:05,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4584 states. [2020-10-24 01:48:05,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4584 to 4413. [2020-10-24 01:48:05,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4413 states. [2020-10-24 01:48:05,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4413 states to 4413 states and 5306 transitions. [2020-10-24 01:48:05,829 INFO L78 Accepts]: Start accepts. Automaton has 4413 states and 5306 transitions. Word has length 190 [2020-10-24 01:48:05,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:48:05,830 INFO L481 AbstractCegarLoop]: Abstraction has 4413 states and 5306 transitions. [2020-10-24 01:48:05,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:48:05,830 INFO L276 IsEmpty]: Start isEmpty. Operand 4413 states and 5306 transitions. [2020-10-24 01:48:05,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-24 01:48:05,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:48:05,843 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:05,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-24 01:48:05,843 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:48:05,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:48:05,844 INFO L82 PathProgramCache]: Analyzing trace with hash -721391226, now seen corresponding path program 1 times [2020-10-24 01:48:05,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:48:05,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610504586] [2020-10-24 01:48:05,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:48:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:48:06,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:48:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:48:06,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 01:48:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:48:06,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-24 01:48:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:48:06,376 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 33 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-24 01:48:06,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610504586] [2020-10-24 01:48:06,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:48:06,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-24 01:48:06,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065058471] [2020-10-24 01:48:06,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-24 01:48:06,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:48:06,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-24 01:48:06,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-24 01:48:06,379 INFO L87 Difference]: Start difference. First operand 4413 states and 5306 transitions. Second operand 13 states. [2020-10-24 01:48:07,628 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2020-10-24 01:48:07,842 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-24 01:48:09,357 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 88 [2020-10-24 01:48:12,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:48:12,386 INFO L93 Difference]: Finished difference Result 9725 states and 11819 transitions. [2020-10-24 01:48:12,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-24 01:48:12,390 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 191 [2020-10-24 01:48:12,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:48:12,415 INFO L225 Difference]: With dead ends: 9725 [2020-10-24 01:48:12,415 INFO L226 Difference]: Without dead ends: 3912 [2020-10-24 01:48:12,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2020-10-24 01:48:12,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3912 states. [2020-10-24 01:48:13,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3912 to 3857. [2020-10-24 01:48:13,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3857 states. [2020-10-24 01:48:13,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3857 states to 3857 states and 4481 transitions. [2020-10-24 01:48:13,111 INFO L78 Accepts]: Start accepts. Automaton has 3857 states and 4481 transitions. Word has length 191 [2020-10-24 01:48:13,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:48:13,112 INFO L481 AbstractCegarLoop]: Abstraction has 3857 states and 4481 transitions. [2020-10-24 01:48:13,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-24 01:48:13,112 INFO L276 IsEmpty]: Start isEmpty. Operand 3857 states and 4481 transitions. [2020-10-24 01:48:13,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-24 01:48:13,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:48:13,125 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:13,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-24 01:48:13,125 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:48:13,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:48:13,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1031494938, now seen corresponding path program 1 times [2020-10-24 01:48:13,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:48:13,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321105381] [2020-10-24 01:48:13,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:48:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:48:13,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:48:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:48:13,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 01:48:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:48:13,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-24 01:48:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:48:13,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-24 01:48:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:48:13,431 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 58 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-24 01:48:13,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321105381] [2020-10-24 01:48:13,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:48:13,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-24 01:48:13,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341332751] [2020-10-24 01:48:13,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 01:48:13,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:48:13,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 01:48:13,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-24 01:48:13,434 INFO L87 Difference]: Start difference. First operand 3857 states and 4481 transitions. Second operand 9 states. [2020-10-24 01:48:15,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:48:15,190 INFO L93 Difference]: Finished difference Result 6984 states and 8173 transitions. [2020-10-24 01:48:15,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-24 01:48:15,194 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 208 [2020-10-24 01:48:15,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:48:15,213 INFO L225 Difference]: With dead ends: 6984 [2020-10-24 01:48:15,213 INFO L226 Difference]: Without dead ends: 3307 [2020-10-24 01:48:15,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-24 01:48:15,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3307 states. [2020-10-24 01:48:15,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3307 to 3151. [2020-10-24 01:48:15,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3151 states. [2020-10-24 01:48:15,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3151 states to 3151 states and 3632 transitions. [2020-10-24 01:48:15,780 INFO L78 Accepts]: Start accepts. Automaton has 3151 states and 3632 transitions. Word has length 208 [2020-10-24 01:48:15,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:48:15,780 INFO L481 AbstractCegarLoop]: Abstraction has 3151 states and 3632 transitions. [2020-10-24 01:48:15,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 01:48:15,781 INFO L276 IsEmpty]: Start isEmpty. Operand 3151 states and 3632 transitions. [2020-10-24 01:48:15,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-24 01:48:15,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:48:15,792 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:15,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-24 01:48:15,792 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:48:15,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:48:15,793 INFO L82 PathProgramCache]: Analyzing trace with hash 2635168, now seen corresponding path program 1 times [2020-10-24 01:48:15,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:48:15,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740908656] [2020-10-24 01:48:15,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:48:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:48:16,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:48:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:48:16,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 01:48:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:48:16,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-24 01:48:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:48:16,402 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 80 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-24 01:48:16,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740908656] [2020-10-24 01:48:16,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:48:16,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-24 01:48:16,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950005205] [2020-10-24 01:48:16,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-24 01:48:16,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:48:16,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-24 01:48:16,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-24 01:48:16,405 INFO L87 Difference]: Start difference. First operand 3151 states and 3632 transitions. Second operand 12 states. [2020-10-24 01:48:17,187 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-24 01:48:17,757 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-24 01:48:19,355 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-24 01:48:20,028 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-24 01:48:23,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:48:23,411 INFO L93 Difference]: Finished difference Result 7408 states and 8560 transitions. [2020-10-24 01:48:23,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-24 01:48:23,412 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 236 [2020-10-24 01:48:23,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:48:23,432 INFO L225 Difference]: With dead ends: 7408 [2020-10-24 01:48:23,432 INFO L226 Difference]: Without dead ends: 4232 [2020-10-24 01:48:23,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-10-24 01:48:23,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4232 states. [2020-10-24 01:48:24,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4232 to 3443. [2020-10-24 01:48:24,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3443 states. [2020-10-24 01:48:24,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3443 states to 3443 states and 3901 transitions. [2020-10-24 01:48:24,101 INFO L78 Accepts]: Start accepts. Automaton has 3443 states and 3901 transitions. Word has length 236 [2020-10-24 01:48:24,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:48:24,101 INFO L481 AbstractCegarLoop]: Abstraction has 3443 states and 3901 transitions. [2020-10-24 01:48:24,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-24 01:48:24,101 INFO L276 IsEmpty]: Start isEmpty. Operand 3443 states and 3901 transitions. [2020-10-24 01:48:24,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-24 01:48:24,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:48:24,110 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:24,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-24 01:48:24,110 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:48:24,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:48:24,111 INFO L82 PathProgramCache]: Analyzing trace with hash -2142153373, now seen corresponding path program 1 times [2020-10-24 01:48:24,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:48:24,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179891991] [2020-10-24 01:48:24,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:48:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:48:24,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:48:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:48:24,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 01:48:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:48:24,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-24 01:48:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:48:24,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-24 01:48:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:48:24,445 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 125 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-24 01:48:24,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179891991] [2020-10-24 01:48:24,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:48:24,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 01:48:24,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057452456] [2020-10-24 01:48:24,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:48:24,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:48:24,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:48:24,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:48:24,447 INFO L87 Difference]: Start difference. First operand 3443 states and 3901 transitions. Second operand 8 states. [2020-10-24 01:48:27,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:48:27,584 INFO L93 Difference]: Finished difference Result 6547 states and 7420 transitions. [2020-10-24 01:48:27,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-24 01:48:27,590 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 262 [2020-10-24 01:48:27,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:48:27,603 INFO L225 Difference]: With dead ends: 6547 [2020-10-24 01:48:27,603 INFO L226 Difference]: Without dead ends: 2253 [2020-10-24 01:48:27,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-24 01:48:27,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2020-10-24 01:48:28,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 2101. [2020-10-24 01:48:28,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2101 states. [2020-10-24 01:48:28,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 2226 transitions. [2020-10-24 01:48:28,089 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 2226 transitions. Word has length 262 [2020-10-24 01:48:28,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:48:28,089 INFO L481 AbstractCegarLoop]: Abstraction has 2101 states and 2226 transitions. [2020-10-24 01:48:28,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:48:28,089 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 2226 transitions. [2020-10-24 01:48:28,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-24 01:48:28,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:48:28,094 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-24 01:48:28,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-24 01:48:28,094 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:48:28,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:48:28,095 INFO L82 PathProgramCache]: Analyzing trace with hash -755241556, now seen corresponding path program 1 times [2020-10-24 01:48:28,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:48:28,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359410997] [2020-10-24 01:48:28,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:48:28,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:48:28,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:48:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:48:28,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 01:48:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:48:28,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 01:48:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:48:28,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-24 01:48:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:48:28,773 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 155 proven. 26 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-24 01:48:28,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359410997] [2020-10-24 01:48:28,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:48:28,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-24 01:48:28,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800138801] [2020-10-24 01:48:28,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-24 01:48:28,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:48:28,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-24 01:48:28,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-24 01:48:28,775 INFO L87 Difference]: Start difference. First operand 2101 states and 2226 transitions. Second operand 13 states. [2020-10-24 01:48:30,418 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-10-24 01:48:31,067 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-10-24 01:48:31,898 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-10-24 01:48:34,120 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-10-24 01:48:34,705 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-10-24 01:48:35,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:48:35,132 INFO L93 Difference]: Finished difference Result 5637 states and 6029 transitions. [2020-10-24 01:48:35,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-24 01:48:35,136 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 304 [2020-10-24 01:48:35,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:48:35,142 INFO L225 Difference]: With dead ends: 5637 [2020-10-24 01:48:35,142 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 01:48:35,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=219, Invalid=593, Unknown=0, NotChecked=0, Total=812 [2020-10-24 01:48:35,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 01:48:35,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 01:48:35,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 01:48:35,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 01:48:35,158 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 304 [2020-10-24 01:48:35,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:48:35,158 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 01:48:35,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-24 01:48:35,158 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 01:48:35,158 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 01:48:35,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-24 01:48:35,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 01:48:36,334 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-24 01:48:44,709 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 116 [2020-10-24 01:48:49,088 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 111 [2020-10-24 01:48:52,181 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 115 [2020-10-24 01:48:56,382 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 106 [2020-10-24 01:48:59,997 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 104 [2020-10-24 01:50:06,828 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 161 DAG size of output: 74 [2020-10-24 01:50:07,744 WARN L193 SmtUtils]: Spent 906.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 80 [2020-10-24 01:50:10,394 WARN L193 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:50:12,232 WARN L193 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 174 DAG size of output: 77 [2020-10-24 01:50:13,673 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 163 DAG size of output: 69 [2020-10-24 01:50:16,286 WARN L193 SmtUtils]: Spent 2.60 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:50:18,908 WARN L193 SmtUtils]: Spent 2.61 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:50:21,533 WARN L193 SmtUtils]: Spent 2.62 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:50:22,976 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 163 DAG size of output: 69 [2020-10-24 01:50:24,410 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 163 DAG size of output: 69 [2020-10-24 01:50:25,486 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:50:28,140 WARN L193 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 218 DAG size of output: 82 [2020-10-24 01:50:28,778 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:50:29,678 WARN L193 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 67 [2020-10-24 01:50:31,073 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 176 DAG size of output: 71 [2020-10-24 01:50:31,933 WARN L193 SmtUtils]: Spent 853.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 75 [2020-10-24 01:50:33,071 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 125 DAG size of output: 76 [2020-10-24 01:50:33,735 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:50:34,504 WARN L193 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 68 [2020-10-24 01:50:35,144 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:50:35,783 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:50:38,873 WARN L193 SmtUtils]: Spent 3.08 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:50:41,989 WARN L193 SmtUtils]: Spent 3.11 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:50:43,053 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 130 DAG size of output: 77 [2020-10-24 01:50:43,699 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:50:45,243 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 161 DAG size of output: 74 [2020-10-24 01:50:46,683 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 163 DAG size of output: 69 [2020-10-24 01:50:49,337 WARN L193 SmtUtils]: Spent 2.65 s on a formula simplification. DAG size of input: 218 DAG size of output: 82 [2020-10-24 01:50:50,561 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 176 DAG size of output: 71 [2020-10-24 01:50:52,007 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 172 DAG size of output: 73 [2020-10-24 01:50:55,146 WARN L193 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:50:56,249 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 173 DAG size of output: 77 [2020-10-24 01:50:57,294 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 127 DAG size of output: 72 [2020-10-24 01:50:58,071 WARN L193 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 67 [2020-10-24 01:50:58,771 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 67 [2020-10-24 01:50:59,669 WARN L193 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 77 [2020-10-24 01:51:02,796 WARN L193 SmtUtils]: Spent 3.12 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:51:03,447 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:51:04,188 WARN L193 SmtUtils]: Spent 735.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 70 [2020-10-24 01:51:07,312 WARN L193 SmtUtils]: Spent 3.12 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:51:08,084 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 67 [2020-10-24 01:51:08,732 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:51:11,865 WARN L193 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:51:12,992 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 122 DAG size of output: 73 [2020-10-24 01:51:14,381 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 171 DAG size of output: 74 [2020-10-24 01:51:17,518 WARN L193 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:51:20,659 WARN L193 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:51:21,368 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 69 [2020-10-24 01:51:22,640 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 167 DAG size of output: 71 [2020-10-24 01:51:23,723 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 131 DAG size of output: 74 [2020-10-24 01:51:24,459 WARN L193 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 70 [2020-10-24 01:51:25,113 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:51:26,210 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 123 DAG size of output: 74 [2020-10-24 01:51:26,911 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 67 [2020-10-24 01:51:27,669 WARN L193 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 72 [2020-10-24 01:51:28,334 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:51:28,989 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:51:32,125 WARN L193 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:51:35,275 WARN L193 SmtUtils]: Spent 3.14 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:51:38,305 WARN L193 SmtUtils]: Spent 3.01 s on a formula simplification. DAG size of input: 220 DAG size of output: 85 [2020-10-24 01:51:39,548 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 174 DAG size of output: 67 [2020-10-24 01:51:40,424 WARN L193 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 79 [2020-10-24 01:51:43,588 WARN L193 SmtUtils]: Spent 3.16 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:51:44,513 WARN L193 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 67 [2020-10-24 01:51:45,563 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 160 DAG size of output: 68 [2020-10-24 01:51:47,129 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2020-10-24 01:51:49,817 WARN L193 SmtUtils]: Spent 2.68 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:51:50,930 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:51:53,626 WARN L193 SmtUtils]: Spent 2.69 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:51:56,363 WARN L193 SmtUtils]: Spent 2.73 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:51:59,297 WARN L193 SmtUtils]: Spent 2.93 s on a formula simplification. DAG size of input: 218 DAG size of output: 82 [2020-10-24 01:52:00,424 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 160 DAG size of output: 68 [2020-10-24 01:52:01,202 WARN L193 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 69 [2020-10-24 01:52:04,635 WARN L193 SmtUtils]: Spent 3.43 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:52:06,070 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 172 DAG size of output: 77 [2020-10-24 01:52:08,296 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 178 DAG size of output: 79 [2020-10-24 01:52:08,986 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:52:09,699 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:52:10,872 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 126 DAG size of output: 72 [2020-10-24 01:52:11,582 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:52:12,273 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:52:15,641 WARN L193 SmtUtils]: Spent 3.36 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:52:18,915 WARN L193 SmtUtils]: Spent 3.27 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:52:19,687 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 67 [2020-10-24 01:52:20,786 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 117 DAG size of output: 70 [2020-10-24 01:52:21,477 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:52:22,574 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 119 DAG size of output: 69 [2020-10-24 01:52:24,335 WARN L193 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 174 DAG size of output: 78 [2020-10-24 01:52:27,176 WARN L193 SmtUtils]: Spent 2.83 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:52:30,544 WARN L193 SmtUtils]: Spent 3.36 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:52:33,846 WARN L193 SmtUtils]: Spent 3.29 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:52:34,696 WARN L193 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 69 [2020-10-24 01:52:35,855 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:52:36,957 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 160 DAG size of output: 68 [2020-10-24 01:52:39,884 WARN L193 SmtUtils]: Spent 2.92 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:52:41,572 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 161 DAG size of output: 74 [2020-10-24 01:52:44,434 WARN L193 SmtUtils]: Spent 2.85 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:52:47,335 WARN L193 SmtUtils]: Spent 2.89 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:52:48,039 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:52:49,325 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 167 DAG size of output: 72 [2020-10-24 01:52:50,023 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:52:50,724 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:52:52,085 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 170 DAG size of output: 71 [2020-10-24 01:52:55,405 WARN L193 SmtUtils]: Spent 3.31 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:52:56,105 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:52:59,425 WARN L193 SmtUtils]: Spent 3.31 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:52:59,994 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2020-10-24 01:53:00,693 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:53:02,120 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 170 DAG size of output: 71 [2020-10-24 01:53:05,460 WARN L193 SmtUtils]: Spent 3.33 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:53:08,822 WARN L193 SmtUtils]: Spent 3.35 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:53:12,130 WARN L193 SmtUtils]: Spent 3.30 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:53:12,827 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:53:14,530 WARN L193 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 172 DAG size of output: 71 [2020-10-24 01:53:15,238 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:53:18,045 WARN L193 SmtUtils]: Spent 2.80 s on a formula simplification. DAG size of input: 218 DAG size of output: 82 [2020-10-24 01:53:19,634 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 161 DAG size of output: 74 [2020-10-24 01:53:20,720 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 160 DAG size of output: 68 [2020-10-24 01:53:22,235 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 163 DAG size of output: 69 [2020-10-24 01:53:23,362 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 173 DAG size of output: 69 [2020-10-24 01:53:24,635 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 123 DAG size of output: 80 [2020-10-24 01:53:25,771 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 169 DAG size of output: 70 [2020-10-24 01:53:27,266 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 180 DAG size of output: 72 [2020-10-24 01:53:27,946 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:53:29,331 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 174 DAG size of output: 66 [2020-10-24 01:53:30,374 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 166 DAG size of output: 67 [2020-10-24 01:53:31,058 WARN L193 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:53:32,113 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 120 DAG size of output: 70 [2020-10-24 01:53:32,787 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:53:36,000 WARN L193 SmtUtils]: Spent 3.20 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:53:36,680 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:53:39,903 WARN L193 SmtUtils]: Spent 3.22 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:53:43,128 WARN L193 SmtUtils]: Spent 3.22 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:53:44,380 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 173 DAG size of output: 67 [2020-10-24 01:53:45,056 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:53:46,127 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 122 DAG size of output: 73 [2020-10-24 01:53:47,069 WARN L193 SmtUtils]: Spent 936.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 67 [2020-10-24 01:53:48,605 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 178 DAG size of output: 79 [2020-10-24 01:53:49,869 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2020-10-24 01:53:50,861 WARN L193 SmtUtils]: Spent 986.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 68 [2020-10-24 01:53:51,533 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:53:52,327 WARN L193 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 67 [2020-10-24 01:53:53,004 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:53:54,086 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 160 DAG size of output: 68 [2020-10-24 01:53:55,167 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 160 DAG size of output: 68 [2020-10-24 01:53:57,907 WARN L193 SmtUtils]: Spent 2.73 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:53:58,986 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 160 DAG size of output: 68 [2020-10-24 01:54:01,734 WARN L193 SmtUtils]: Spent 2.74 s on a formula simplification. DAG size of input: 218 DAG size of output: 82 [2020-10-24 01:54:02,889 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:54:04,242 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 170 DAG size of output: 71 [2020-10-24 01:54:04,978 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 67 [2020-10-24 01:54:05,666 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:54:08,905 WARN L193 SmtUtils]: Spent 3.23 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:54:09,842 WARN L193 SmtUtils]: Spent 930.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 62 [2020-10-24 01:54:10,993 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 127 DAG size of output: 71 [2020-10-24 01:54:11,675 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:54:14,906 WARN L193 SmtUtils]: Spent 3.22 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:54:15,991 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 160 DAG size of output: 68 [2020-10-24 01:54:18,761 WARN L193 SmtUtils]: Spent 2.76 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:54:21,530 WARN L193 SmtUtils]: Spent 2.76 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:54:22,341 WARN L193 SmtUtils]: Spent 804.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 67 [2020-10-24 01:54:25,112 WARN L193 SmtUtils]: Spent 2.76 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:54:26,635 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 163 DAG size of output: 69 [2020-10-24 01:54:29,405 WARN L193 SmtUtils]: Spent 2.76 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:54:31,027 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 161 DAG size of output: 74 [2020-10-24 01:54:32,653 WARN L193 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 161 DAG size of output: 74 [2020-10-24 01:54:34,283 WARN L193 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 161 DAG size of output: 74 [2020-10-24 01:54:37,069 WARN L193 SmtUtils]: Spent 2.78 s on a formula simplification. DAG size of input: 218 DAG size of output: 82 [2020-10-24 01:54:38,229 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:54:41,004 WARN L193 SmtUtils]: Spent 2.77 s on a formula simplification. DAG size of input: 218 DAG size of output: 82 [2020-10-24 01:54:41,692 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:54:43,309 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 179 DAG size of output: 72 [2020-10-24 01:54:44,000 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:54:47,259 WARN L193 SmtUtils]: Spent 3.25 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:54:47,945 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:54:48,634 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:54:49,442 WARN L193 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 66 [2020-10-24 01:54:52,716 WARN L193 SmtUtils]: Spent 3.27 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:54:55,987 WARN L193 SmtUtils]: Spent 3.26 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:54:57,413 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 170 DAG size of output: 71 [2020-10-24 01:55:00,544 WARN L193 SmtUtils]: Spent 3.12 s on a formula simplification. DAG size of input: 220 DAG size of output: 85 [2020-10-24 01:55:01,646 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 160 DAG size of output: 68 [2020-10-24 01:55:04,437 WARN L193 SmtUtils]: Spent 2.78 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:55:07,230 WARN L193 SmtUtils]: Spent 2.79 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:55:10,608 WARN L193 SmtUtils]: Spent 3.28 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:55:11,452 WARN L193 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 74 [2020-10-24 01:55:12,141 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:55:15,444 WARN L193 SmtUtils]: Spent 3.29 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:55:17,031 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 122 DAG size of output: 78 [2020-10-24 01:55:20,313 WARN L193 SmtUtils]: Spent 3.27 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:55:21,720 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 129 DAG size of output: 74 [2020-10-24 01:55:22,741 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 124 DAG size of output: 69 [2020-10-24 01:55:23,437 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:55:24,138 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:55:25,167 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 123 DAG size of output: 67 [2020-10-24 01:55:25,866 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:55:26,986 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 117 DAG size of output: 71 [2020-10-24 01:55:28,254 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 175 DAG size of output: 69 [2020-10-24 01:55:29,163 WARN L193 SmtUtils]: Spent 902.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 55 [2020-10-24 01:55:29,856 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:55:30,560 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:55:31,324 WARN L193 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 65 [2020-10-24 01:55:34,614 WARN L193 SmtUtils]: Spent 3.28 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:55:35,366 WARN L193 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 68 [2020-10-24 01:55:37,034 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2020-10-24 01:55:37,897 WARN L193 SmtUtils]: Spent 856.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 67 [2020-10-24 01:55:38,648 WARN L193 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 68 [2020-10-24 01:55:41,932 WARN L193 SmtUtils]: Spent 3.28 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:55:45,243 WARN L193 SmtUtils]: Spent 3.30 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:55:46,073 WARN L193 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2020-10-24 01:55:47,074 WARN L193 SmtUtils]: Spent 994.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2020-10-24 01:55:48,336 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 172 DAG size of output: 72 [2020-10-24 01:55:48,914 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2020-10-24 01:55:49,614 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:55:51,061 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 174 DAG size of output: 66 [2020-10-24 01:55:51,810 WARN L193 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 67 [2020-10-24 01:55:52,884 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 122 DAG size of output: 68 [2020-10-24 01:55:56,191 WARN L193 SmtUtils]: Spent 3.30 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:55:59,510 WARN L193 SmtUtils]: Spent 3.31 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:56:00,953 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 130 DAG size of output: 72 [2020-10-24 01:56:04,268 WARN L193 SmtUtils]: Spent 3.31 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:56:07,593 WARN L193 SmtUtils]: Spent 3.32 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:56:08,384 WARN L193 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 66 [2020-10-24 01:56:11,699 WARN L193 SmtUtils]: Spent 3.31 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:56:13,148 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 174 DAG size of output: 72 [2020-10-24 01:56:16,467 WARN L193 SmtUtils]: Spent 3.31 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:56:17,661 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:56:20,502 WARN L193 SmtUtils]: Spent 2.83 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:56:23,349 WARN L193 SmtUtils]: Spent 2.84 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:56:26,210 WARN L193 SmtUtils]: Spent 2.85 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:56:27,362 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 160 DAG size of output: 68 [2020-10-24 01:56:29,055 WARN L193 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 161 DAG size of output: 74 [2020-10-24 01:56:30,250 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:56:33,103 WARN L193 SmtUtils]: Spent 2.85 s on a formula simplification. DAG size of input: 218 DAG size of output: 82 [2020-10-24 01:56:34,235 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 160 DAG size of output: 68 [2020-10-24 01:56:35,475 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 126 DAG size of output: 72 [2020-10-24 01:56:36,651 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 129 DAG size of output: 72 [2020-10-24 01:56:37,362 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:56:38,787 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 116 DAG size of output: 70 [2020-10-24 01:56:39,494 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:56:40,203 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:56:40,918 WARN L193 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:56:41,627 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:56:42,332 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:56:43,776 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 121 DAG size of output: 73 [2020-10-24 01:56:44,638 WARN L193 SmtUtils]: Spent 855.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 68 [2020-10-24 01:56:45,667 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 173 DAG size of output: 76 [2020-10-24 01:56:48,245 WARN L193 SmtUtils]: Spent 2.57 s on a formula simplification. DAG size of input: 174 DAG size of output: 76 [2020-10-24 01:56:49,437 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:56:52,430 WARN L193 SmtUtils]: Spent 2.99 s on a formula simplification. DAG size of input: 218 DAG size of output: 84 [2020-10-24 01:56:53,796 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 174 DAG size of output: 71 [2020-10-24 01:56:54,674 WARN L193 SmtUtils]: Spent 872.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 75 [2020-10-24 01:56:55,761 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 120 DAG size of output: 68 [2020-10-24 01:56:59,115 WARN L193 SmtUtils]: Spent 3.35 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:57:00,605 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 175 DAG size of output: 77 [2020-10-24 01:57:02,004 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 167 DAG size of output: 71 [2020-10-24 01:57:02,721 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:57:03,560 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 67 [2020-10-24 01:57:04,782 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 126 DAG size of output: 75 [2020-10-24 01:57:05,493 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:57:06,208 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:57:07,812 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 172 DAG size of output: 73 [2020-10-24 01:57:08,521 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:57:09,360 WARN L193 SmtUtils]: Spent 833.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 67 [2020-10-24 01:57:12,721 WARN L193 SmtUtils]: Spent 3.35 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:57:16,073 WARN L193 SmtUtils]: Spent 3.34 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:57:17,091 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 170 DAG size of output: 55 [2020-10-24 01:57:20,458 WARN L193 SmtUtils]: Spent 3.36 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:57:23,343 WARN L193 SmtUtils]: Spent 2.88 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:57:24,465 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 165 DAG size of output: 66 [2020-10-24 01:57:25,672 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 114 DAG size of output: 68 [2020-10-24 01:57:26,386 WARN L193 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:57:27,109 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:57:28,247 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 120 DAG size of output: 68 [2020-10-24 01:57:29,248 WARN L193 SmtUtils]: Spent 994.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 67 [2020-10-24 01:57:32,625 WARN L193 SmtUtils]: Spent 3.37 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:57:33,343 WARN L193 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:57:34,061 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:57:37,446 WARN L193 SmtUtils]: Spent 3.38 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:57:38,161 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:57:41,528 WARN L193 SmtUtils]: Spent 3.36 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:57:42,326 WARN L193 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 63 [2020-10-24 01:57:43,051 WARN L193 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:57:46,440 WARN L193 SmtUtils]: Spent 3.38 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:57:47,286 WARN L193 SmtUtils]: Spent 841.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 70 [2020-10-24 01:57:48,335 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 119 DAG size of output: 64 [2020-10-24 01:57:49,462 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 118 DAG size of output: 67 [2020-10-24 01:57:50,336 WARN L193 SmtUtils]: Spent 867.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2020-10-24 01:57:51,210 WARN L193 SmtUtils]: Spent 867.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 75 [2020-10-24 01:57:53,393 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 178 DAG size of output: 79 [2020-10-24 01:57:54,120 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:57:55,653 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 171 DAG size of output: 74 [2020-10-24 01:57:56,883 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 125 DAG size of output: 77 [2020-10-24 01:57:58,247 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 167 DAG size of output: 71 [2020-10-24 01:57:58,968 WARN L193 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:58:00,593 WARN L193 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 172 DAG size of output: 73 [2020-10-24 01:58:01,317 WARN L193 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:58:02,050 WARN L193 SmtUtils]: Spent 725.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:58:03,648 WARN L193 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 116 DAG size of output: 70 [2020-10-24 01:58:04,642 WARN L193 SmtUtils]: Spent 987.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 68 [2020-10-24 01:58:05,431 WARN L193 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 68 [2020-10-24 01:58:08,837 WARN L193 SmtUtils]: Spent 3.40 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:58:09,014 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 34 [2020-10-24 01:58:12,442 WARN L193 SmtUtils]: Spent 3.42 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:58:13,173 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:58:14,557 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 175 DAG size of output: 79 [2020-10-24 01:58:15,293 WARN L193 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:58:16,017 WARN L193 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:58:17,765 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 178 DAG size of output: 71 [2020-10-24 01:58:18,492 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:58:19,292 WARN L193 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 66 [2020-10-24 01:58:20,429 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 166 DAG size of output: 67 [2020-10-24 01:58:21,163 WARN L193 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:58:22,948 WARN L193 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 172 DAG size of output: 71 [2020-10-24 01:58:24,005 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 121 DAG size of output: 66 [2020-10-24 01:58:24,741 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:58:28,166 WARN L193 SmtUtils]: Spent 3.42 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:58:29,397 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:58:30,461 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 119 DAG size of output: 64 [2020-10-24 01:58:33,423 WARN L193 SmtUtils]: Spent 2.92 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:58:36,707 WARN L193 SmtUtils]: Spent 3.28 s on a formula simplification. DAG size of input: 220 DAG size of output: 85 [2020-10-24 01:58:38,201 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 174 DAG size of output: 66 [2020-10-24 01:58:41,148 WARN L193 SmtUtils]: Spent 2.93 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:58:42,896 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 161 DAG size of output: 74 [2020-10-24 01:58:43,631 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:58:44,802 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 160 DAG size of output: 68 [2020-10-24 01:58:45,536 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:58:48,478 WARN L193 SmtUtils]: Spent 2.93 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:58:50,225 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 161 DAG size of output: 74 [2020-10-24 01:58:53,150 WARN L193 SmtUtils]: Spent 2.92 s on a formula simplification. DAG size of input: 218 DAG size of output: 82 [2020-10-24 01:58:56,078 WARN L193 SmtUtils]: Spent 2.92 s on a formula simplification. DAG size of input: 218 DAG size of output: 82 [2020-10-24 01:58:57,254 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 160 DAG size of output: 68 [2020-10-24 01:59:00,201 WARN L193 SmtUtils]: Spent 2.94 s on a formula simplification. DAG size of input: 218 DAG size of output: 82 [2020-10-24 01:59:03,163 WARN L193 SmtUtils]: Spent 2.95 s on a formula simplification. DAG size of input: 218 DAG size of output: 82 [2020-10-24 01:59:04,906 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 161 DAG size of output: 74 [2020-10-24 01:59:06,172 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 115 DAG size of output: 69 [2020-10-24 01:59:07,327 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 165 DAG size of output: 66 [2020-10-24 01:59:08,127 WARN L193 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 67 [2020-10-24 01:59:08,858 WARN L193 SmtUtils]: Spent 725.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-24 01:59:10,038 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 160 DAG size of output: 68 [2020-10-24 01:59:12,987 WARN L193 SmtUtils]: Spent 2.94 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:59:16,218 WARN L193 SmtUtils]: Spent 3.22 s on a formula simplification. DAG size of input: 219 DAG size of output: 86 [2020-10-24 01:59:17,150 WARN L193 SmtUtils]: Spent 926.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 66 [2020-10-24 01:59:20,620 WARN L193 SmtUtils]: Spent 3.46 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 01:59:23,587 WARN L193 SmtUtils]: Spent 2.96 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:59:25,356 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 161 DAG size of output: 74 [2020-10-24 01:59:27,126 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 161 DAG size of output: 74 [2020-10-24 01:59:28,897 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 161 DAG size of output: 74 [2020-10-24 01:59:31,884 WARN L193 SmtUtils]: Spent 2.98 s on a formula simplification. DAG size of input: 217 DAG size of output: 82 [2020-10-24 01:59:32,504 WARN L193 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2020-10-24 01:59:33,121 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2020-10-24 01:59:33,739 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2020-10-24 01:59:34,402 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2020-10-24 01:59:48,887 WARN L193 SmtUtils]: Spent 14.47 s on a formula simplification. DAG size of input: 303 DAG size of output: 157 [2020-10-24 02:00:03,815 WARN L193 SmtUtils]: Spent 14.87 s on a formula simplification. DAG size of input: 303 DAG size of output: 157 [2020-10-24 02:00:07,327 WARN L193 SmtUtils]: Spent 3.50 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 02:00:09,515 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 126 DAG size of output: 75 [2020-10-24 02:00:11,528 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 172 DAG size of output: 71 [2020-10-24 02:00:15,374 WARN L193 SmtUtils]: Spent 3.84 s on a formula simplification. DAG size of input: 221 DAG size of output: 86 [2020-10-24 02:00:16,383 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 124 DAG size of output: 75 [2020-10-24 02:00:20,208 WARN L193 SmtUtils]: Spent 3.82 s on a formula simplification. DAG size of input: 221 DAG size of output: 86