/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_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 05:41:14,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 05:41:14,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 05:41:14,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 05:41:14,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 05:41:14,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 05:41:14,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 05:41:14,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 05:41:14,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 05:41:14,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 05:41:14,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 05:41:14,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 05:41:14,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 05:41:14,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 05:41:14,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 05:41:14,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 05:41:14,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 05:41:14,824 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 05:41:14,847 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 05:41:14,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 05:41:14,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 05:41:14,853 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 05:41:14,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 05:41:14,854 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 05:41:14,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 05:41:14,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 05:41:14,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 05:41:14,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 05:41:14,856 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 05:41:14,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 05:41:14,856 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 05:41:14,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 05:41:14,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 05:41:14,857 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 05:41:14,857 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 05:41:14,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 05:41:14,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:41:14,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 05:41:14,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 05:41:14,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 05:41:14,858 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 05:41:15,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 05:41:15,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 05:41:15,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 05:41:15,337 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 05:41:15,338 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 05:41:15,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label05.c [2020-11-07 05:41:15,413 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f0282af6/bdbeeab35afb4962863bf9a578fdcc6a/FLAG4cfdf57e3 [2020-11-07 05:41:16,083 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 05:41:16,095 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label05.c [2020-11-07 05:41:16,122 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f0282af6/bdbeeab35afb4962863bf9a578fdcc6a/FLAG4cfdf57e3 [2020-11-07 05:41:16,330 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f0282af6/bdbeeab35afb4962863bf9a578fdcc6a [2020-11-07 05:41:16,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 05:41:16,340 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 05:41:16,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 05:41:16,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 05:41:16,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 05:41:16,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:41:16" (1/1) ... [2020-11-07 05:41:16,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e9e0f68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:41:16, skipping insertion in model container [2020-11-07 05:41:16,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:41:16" (1/1) ... [2020-11-07 05:41:16,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 05:41:16,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 05:41:16,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:41:16,828 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 05:41:16,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:41:16,955 INFO L208 MainTranslator]: Completed translation [2020-11-07 05:41:16,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:41:16 WrapperNode [2020-11-07 05:41:16,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 05:41:16,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 05:41:16,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 05:41:16,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 05:41:16,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:41:16" (1/1) ... [2020-11-07 05:41:16,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:41:16" (1/1) ... [2020-11-07 05:41:17,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:41:16" (1/1) ... [2020-11-07 05:41:17,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:41:16" (1/1) ... [2020-11-07 05:41:17,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:41:16" (1/1) ... [2020-11-07 05:41:17,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:41:16" (1/1) ... [2020-11-07 05:41:17,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:41:16" (1/1) ... [2020-11-07 05:41:17,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 05:41:17,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 05:41:17,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 05:41:17,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 05:41:17,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:41:16" (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 [2020-11-07 05:41:17,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 05:41:17,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 05:41:17,191 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 05:41:17,191 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-11-07 05:41:17,191 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 05:41:17,191 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-11-07 05:41:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 05:41:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 05:41:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 05:41:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 05:41:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 05:41:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-07 05:41:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 05:41:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 05:41:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 05:41:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 05:41:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 05:41:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 05:41:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 05:41:18,673 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 05:41:18,674 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 05:41:18,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:41:18 BoogieIcfgContainer [2020-11-07 05:41:18,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 05:41:18,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 05:41:18,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 05:41:18,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 05:41:18,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:41:16" (1/3) ... [2020-11-07 05:41:18,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fed42c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:41:18, skipping insertion in model container [2020-11-07 05:41:18,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:41:16" (2/3) ... [2020-11-07 05:41:18,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fed42c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:41:18, skipping insertion in model container [2020-11-07 05:41:18,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:41:18" (3/3) ... [2020-11-07 05:41:18,704 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label05.c [2020-11-07 05:41:18,721 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 05:41:18,725 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 05:41:18,738 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 05:41:18,764 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 05:41:18,764 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 05:41:18,764 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 05:41:18,764 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 05:41:18,764 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 05:41:18,765 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 05:41:18,765 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 05:41:18,765 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 05:41:18,795 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states. [2020-11-07 05:41:18,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-11-07 05:41:18,823 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:41:18,824 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:41:18,824 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:41:18,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:41:18,831 INFO L82 PathProgramCache]: Analyzing trace with hash -417910909, now seen corresponding path program 1 times [2020-11-07 05:41:18,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:41:18,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638510244] [2020-11-07 05:41:18,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:41:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:41:19,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:41:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:41:19,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:41:19,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638510244] [2020-11-07 05:41:19,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:41:19,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:41:19,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578363071] [2020-11-07 05:41:19,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:41:19,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:41:19,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:41:19,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:41:19,594 INFO L87 Difference]: Start difference. First operand 539 states. Second operand 4 states. [2020-11-07 05:41:22,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:41:22,708 INFO L93 Difference]: Finished difference Result 1409 states and 1864 transitions. [2020-11-07 05:41:22,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-07 05:41:22,711 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2020-11-07 05:41:22,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:41:22,737 INFO L225 Difference]: With dead ends: 1409 [2020-11-07 05:41:22,738 INFO L226 Difference]: Without dead ends: 797 [2020-11-07 05:41:22,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:41:22,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2020-11-07 05:41:23,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 674. [2020-11-07 05:41:23,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2020-11-07 05:41:23,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 822 transitions. [2020-11-07 05:41:23,059 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 822 transitions. Word has length 161 [2020-11-07 05:41:23,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:41:23,064 INFO L481 AbstractCegarLoop]: Abstraction has 674 states and 822 transitions. [2020-11-07 05:41:23,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:41:23,064 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 822 transitions. [2020-11-07 05:41:23,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-11-07 05:41:23,081 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:41:23,081 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:41:23,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 05:41:23,085 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:41:23,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:41:23,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1011658963, now seen corresponding path program 1 times [2020-11-07 05:41:23,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:41:23,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763921011] [2020-11-07 05:41:23,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:41:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:41:23,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:41:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:41:23,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-07 05:41:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:41:23,574 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:41:23,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763921011] [2020-11-07 05:41:23,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:41:23,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-07 05:41:23,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755843824] [2020-11-07 05:41:23,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 05:41:23,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:41:23,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 05:41:23,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:41:23,585 INFO L87 Difference]: Start difference. First operand 674 states and 822 transitions. Second operand 10 states. [2020-11-07 05:41:23,825 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-11-07 05:41:24,401 WARN L194 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-11-07 05:41:31,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:41:31,009 INFO L93 Difference]: Finished difference Result 2156 states and 2731 transitions. [2020-11-07 05:41:31,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-07 05:41:31,015 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 179 [2020-11-07 05:41:31,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:41:31,032 INFO L225 Difference]: With dead ends: 2156 [2020-11-07 05:41:31,032 INFO L226 Difference]: Without dead ends: 1512 [2020-11-07 05:41:31,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=216, Invalid=714, Unknown=0, NotChecked=0, Total=930 [2020-11-07 05:41:31,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2020-11-07 05:41:31,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1217. [2020-11-07 05:41:31,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1217 states. [2020-11-07 05:41:31,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1474 transitions. [2020-11-07 05:41:31,334 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1474 transitions. Word has length 179 [2020-11-07 05:41:31,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:41:31,335 INFO L481 AbstractCegarLoop]: Abstraction has 1217 states and 1474 transitions. [2020-11-07 05:41:31,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 05:41:31,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1474 transitions. [2020-11-07 05:41:31,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-11-07 05:41:31,341 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:41:31,341 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:41:31,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 05:41:31,342 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:41:31,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:41:31,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1041684603, now seen corresponding path program 1 times [2020-11-07 05:41:31,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:41:31,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559342471] [2020-11-07 05:41:31,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:41:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:41:31,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:41:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:41:31,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-07 05:41:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:41:31,780 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:41:31,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559342471] [2020-11-07 05:41:31,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:41:31,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 05:41:31,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749249267] [2020-11-07 05:41:31,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:41:31,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:41:31,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:41:31,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:41:31,799 INFO L87 Difference]: Start difference. First operand 1217 states and 1474 transitions. Second operand 7 states. [2020-11-07 05:41:32,138 WARN L194 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-11-07 05:41:32,489 WARN L194 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-07 05:41:37,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:41:37,109 INFO L93 Difference]: Finished difference Result 2854 states and 3550 transitions. [2020-11-07 05:41:37,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-07 05:41:37,113 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 183 [2020-11-07 05:41:37,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:41:37,126 INFO L225 Difference]: With dead ends: 2854 [2020-11-07 05:41:37,126 INFO L226 Difference]: Without dead ends: 1667 [2020-11-07 05:41:37,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-11-07 05:41:37,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2020-11-07 05:41:37,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1515. [2020-11-07 05:41:37,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1515 states. [2020-11-07 05:41:37,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 1897 transitions. [2020-11-07 05:41:37,503 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 1897 transitions. Word has length 183 [2020-11-07 05:41:37,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:41:37,505 INFO L481 AbstractCegarLoop]: Abstraction has 1515 states and 1897 transitions. [2020-11-07 05:41:37,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:41:37,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 1897 transitions. [2020-11-07 05:41:37,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-11-07 05:41:37,513 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:41:37,514 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:41:37,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 05:41:37,514 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:41:37,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:41:37,515 INFO L82 PathProgramCache]: Analyzing trace with hash 648403544, now seen corresponding path program 1 times [2020-11-07 05:41:37,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:41:37,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018098690] [2020-11-07 05:41:37,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:41:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:41:37,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:41:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:41:37,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-07 05:41:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:41:37,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-07 05:41:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:41:37,895 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-07 05:41:37,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018098690] [2020-11-07 05:41:37,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:41:37,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-11-07 05:41:37,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799056166] [2020-11-07 05:41:37,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 05:41:37,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:41:37,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 05:41:37,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-07 05:41:37,898 INFO L87 Difference]: Start difference. First operand 1515 states and 1897 transitions. Second operand 12 states. [2020-11-07 05:41:38,243 WARN L194 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2020-11-07 05:41:38,734 WARN L194 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2020-11-07 05:41:39,092 WARN L194 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-11-07 05:41:39,953 WARN L194 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-11-07 05:41:40,265 WARN L194 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2020-11-07 05:41:41,786 WARN L194 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-11-07 05:41:43,176 WARN L194 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-11-07 05:41:43,833 WARN L194 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-11-07 05:41:46,398 WARN L194 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2020-11-07 05:41:51,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:41:51,586 INFO L93 Difference]: Finished difference Result 5738 states and 7696 transitions. [2020-11-07 05:41:51,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-11-07 05:41:51,587 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 196 [2020-11-07 05:41:51,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:41:51,616 INFO L225 Difference]: With dead ends: 5738 [2020-11-07 05:41:51,616 INFO L226 Difference]: Without dead ends: 4253 [2020-11-07 05:41:51,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=610, Invalid=2582, Unknown=0, NotChecked=0, Total=3192 [2020-11-07 05:41:51,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4253 states. [2020-11-07 05:41:52,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4253 to 3574. [2020-11-07 05:41:52,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3574 states. [2020-11-07 05:41:52,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 4505 transitions. [2020-11-07 05:41:52,514 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 4505 transitions. Word has length 196 [2020-11-07 05:41:52,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:41:52,514 INFO L481 AbstractCegarLoop]: Abstraction has 3574 states and 4505 transitions. [2020-11-07 05:41:52,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 05:41:52,514 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 4505 transitions. [2020-11-07 05:41:52,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-11-07 05:41:52,530 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:41:52,530 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:41:52,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 05:41:52,531 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:41:52,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:41:52,532 INFO L82 PathProgramCache]: Analyzing trace with hash -486613281, now seen corresponding path program 1 times [2020-11-07 05:41:52,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:41:52,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467955375] [2020-11-07 05:41:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:41:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:41:52,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:41:52,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:41:52,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-07 05:41:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:41:52,821 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:41:52,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467955375] [2020-11-07 05:41:52,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:41:52,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-07 05:41:52,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940133856] [2020-11-07 05:41:52,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:41:52,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:41:52,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:41:52,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:41:52,824 INFO L87 Difference]: Start difference. First operand 3574 states and 4505 transitions. Second operand 7 states. [2020-11-07 05:41:56,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:41:56,089 INFO L93 Difference]: Finished difference Result 9305 states and 12483 transitions. [2020-11-07 05:41:56,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 05:41:56,095 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 199 [2020-11-07 05:41:56,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:41:56,147 INFO L225 Difference]: With dead ends: 9305 [2020-11-07 05:41:56,147 INFO L226 Difference]: Without dead ends: 5761 [2020-11-07 05:41:56,170 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 [2020-11-07 05:41:56,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5761 states. [2020-11-07 05:41:57,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5761 to 5419. [2020-11-07 05:41:57,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5419 states. [2020-11-07 05:41:57,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5419 states to 5419 states and 6779 transitions. [2020-11-07 05:41:57,308 INFO L78 Accepts]: Start accepts. Automaton has 5419 states and 6779 transitions. Word has length 199 [2020-11-07 05:41:57,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:41:57,309 INFO L481 AbstractCegarLoop]: Abstraction has 5419 states and 6779 transitions. [2020-11-07 05:41:57,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:41:57,309 INFO L276 IsEmpty]: Start isEmpty. Operand 5419 states and 6779 transitions. [2020-11-07 05:41:57,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-11-07 05:41:57,327 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:41:57,327 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:41:57,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 05:41:57,328 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:41:57,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:41:57,328 INFO L82 PathProgramCache]: Analyzing trace with hash 249916501, now seen corresponding path program 1 times [2020-11-07 05:41:57,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:41:57,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184882772] [2020-11-07 05:41:57,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:41:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:41:57,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:41:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:41:57,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-07 05:41:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:41:57,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-11-07 05:41:57,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:41:57,627 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-07 05:41:57,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184882772] [2020-11-07 05:41:57,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:41:57,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-07 05:41:57,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638024538] [2020-11-07 05:41:57,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 05:41:57,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:41:57,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 05:41:57,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-11-07 05:41:57,636 INFO L87 Difference]: Start difference. First operand 5419 states and 6779 transitions. Second operand 9 states. [2020-11-07 05:41:58,589 WARN L194 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-11-07 05:42:03,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:42:03,868 INFO L93 Difference]: Finished difference Result 12021 states and 15263 transitions. [2020-11-07 05:42:03,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-07 05:42:03,868 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 201 [2020-11-07 05:42:03,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:42:03,919 INFO L225 Difference]: With dead ends: 12021 [2020-11-07 05:42:03,920 INFO L226 Difference]: Without dead ends: 6782 [2020-11-07 05:42:03,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2020-11-07 05:42:03,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6782 states. [2020-11-07 05:42:05,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6782 to 5978. [2020-11-07 05:42:05,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5978 states. [2020-11-07 05:42:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 7541 transitions. [2020-11-07 05:42:05,062 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 7541 transitions. Word has length 201 [2020-11-07 05:42:05,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:42:05,062 INFO L481 AbstractCegarLoop]: Abstraction has 5978 states and 7541 transitions. [2020-11-07 05:42:05,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 05:42:05,062 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 7541 transitions. [2020-11-07 05:42:05,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-11-07 05:42:05,085 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:42:05,086 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:42:05,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 05:42:05,086 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:42:05,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:42:05,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1954566493, now seen corresponding path program 1 times [2020-11-07 05:42:05,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:42:05,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162349229] [2020-11-07 05:42:05,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:42:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:05,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:42:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:05,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-07 05:42:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:05,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-11-07 05:42:05,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:05,660 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-07 05:42:05,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162349229] [2020-11-07 05:42:05,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:42:05,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 05:42:05,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079980814] [2020-11-07 05:42:05,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 05:42:05,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:42:05,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 05:42:05,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:42:05,664 INFO L87 Difference]: Start difference. First operand 5978 states and 7541 transitions. Second operand 10 states. [2020-11-07 05:42:06,880 WARN L194 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-07 05:42:07,061 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 05:42:09,024 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:42:13,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:42:13,247 INFO L93 Difference]: Finished difference Result 15130 states and 19280 transitions. [2020-11-07 05:42:13,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-07 05:42:13,248 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 222 [2020-11-07 05:42:13,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:42:13,312 INFO L225 Difference]: With dead ends: 15130 [2020-11-07 05:42:13,312 INFO L226 Difference]: Without dead ends: 8986 [2020-11-07 05:42:13,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2020-11-07 05:42:13,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8986 states. [2020-11-07 05:42:14,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8986 to 6274. [2020-11-07 05:42:14,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6274 states. [2020-11-07 05:42:14,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6274 states to 6274 states and 7794 transitions. [2020-11-07 05:42:14,638 INFO L78 Accepts]: Start accepts. Automaton has 6274 states and 7794 transitions. Word has length 222 [2020-11-07 05:42:14,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:42:14,638 INFO L481 AbstractCegarLoop]: Abstraction has 6274 states and 7794 transitions. [2020-11-07 05:42:14,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 05:42:14,638 INFO L276 IsEmpty]: Start isEmpty. Operand 6274 states and 7794 transitions. [2020-11-07 05:42:14,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-11-07 05:42:14,661 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:42:14,661 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, 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] [2020-11-07 05:42:14,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 05:42:14,661 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:42:14,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:42:14,662 INFO L82 PathProgramCache]: Analyzing trace with hash -2015852022, now seen corresponding path program 1 times [2020-11-07 05:42:14,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:42:14,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402845269] [2020-11-07 05:42:14,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:42:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:14,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:42:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:14,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-07 05:42:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:14,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-07 05:42:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:14,931 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-07 05:42:14,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402845269] [2020-11-07 05:42:14,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:42:14,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 05:42:14,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104869414] [2020-11-07 05:42:14,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:42:14,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:42:14,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:42:14,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:42:14,934 INFO L87 Difference]: Start difference. First operand 6274 states and 7794 transitions. Second operand 8 states. [2020-11-07 05:42:18,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:42:18,157 INFO L93 Difference]: Finished difference Result 12393 states and 15457 transitions. [2020-11-07 05:42:18,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 05:42:18,161 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 224 [2020-11-07 05:42:18,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:42:18,190 INFO L225 Difference]: With dead ends: 12393 [2020-11-07 05:42:18,190 INFO L226 Difference]: Without dead ends: 6299 [2020-11-07 05:42:18,211 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 [2020-11-07 05:42:18,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6299 states. [2020-11-07 05:42:19,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6299 to 6274. [2020-11-07 05:42:19,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6274 states. [2020-11-07 05:42:19,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6274 states to 6274 states and 7535 transitions. [2020-11-07 05:42:19,504 INFO L78 Accepts]: Start accepts. Automaton has 6274 states and 7535 transitions. Word has length 224 [2020-11-07 05:42:19,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:42:19,504 INFO L481 AbstractCegarLoop]: Abstraction has 6274 states and 7535 transitions. [2020-11-07 05:42:19,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:42:19,504 INFO L276 IsEmpty]: Start isEmpty. Operand 6274 states and 7535 transitions. [2020-11-07 05:42:19,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-11-07 05:42:19,524 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:42:19,525 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:42:19,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 05:42:19,525 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:42:19,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:42:19,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1487199842, now seen corresponding path program 1 times [2020-11-07 05:42:19,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:42:19,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690652215] [2020-11-07 05:42:19,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:42:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:19,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:42:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:19,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-07 05:42:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:19,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-11-07 05:42:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:19,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-07 05:42:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:19,815 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-07 05:42:19,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690652215] [2020-11-07 05:42:19,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:42:19,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 05:42:19,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251968881] [2020-11-07 05:42:19,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:42:19,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:42:19,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:42:19,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:42:19,817 INFO L87 Difference]: Start difference. First operand 6274 states and 7535 transitions. Second operand 7 states. [2020-11-07 05:42:24,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:42:24,813 INFO L93 Difference]: Finished difference Result 16102 states and 19321 transitions. [2020-11-07 05:42:24,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 05:42:24,813 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 278 [2020-11-07 05:42:24,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:42:24,853 INFO L225 Difference]: With dead ends: 16102 [2020-11-07 05:42:24,854 INFO L226 Difference]: Without dead ends: 8741 [2020-11-07 05:42:24,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-11-07 05:42:24,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8741 states. [2020-11-07 05:42:25,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8741 to 5275. [2020-11-07 05:42:25,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5275 states. [2020-11-07 05:42:25,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5275 states to 5275 states and 6004 transitions. [2020-11-07 05:42:25,999 INFO L78 Accepts]: Start accepts. Automaton has 5275 states and 6004 transitions. Word has length 278 [2020-11-07 05:42:25,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:42:26,000 INFO L481 AbstractCegarLoop]: Abstraction has 5275 states and 6004 transitions. [2020-11-07 05:42:26,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:42:26,000 INFO L276 IsEmpty]: Start isEmpty. Operand 5275 states and 6004 transitions. [2020-11-07 05:42:26,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-11-07 05:42:26,015 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:42:26,015 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-07 05:42:26,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-07 05:42:26,016 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:42:26,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:42:26,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1586652350, now seen corresponding path program 1 times [2020-11-07 05:42:26,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:42:26,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890641783] [2020-11-07 05:42:26,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:42:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:26,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:42:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:26,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-07 05:42:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:26,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-11-07 05:42:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:26,764 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 104 proven. 16 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-11-07 05:42:26,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890641783] [2020-11-07 05:42:26,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:42:26,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-11-07 05:42:26,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923037713] [2020-11-07 05:42:26,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-07 05:42:26,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:42:26,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-07 05:42:26,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-11-07 05:42:26,766 INFO L87 Difference]: Start difference. First operand 5275 states and 6004 transitions. Second operand 13 states. [2020-11-07 05:42:28,391 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:42:32,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:42:32,112 INFO L93 Difference]: Finished difference Result 10622 states and 12119 transitions. [2020-11-07 05:42:32,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-07 05:42:32,114 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 288 [2020-11-07 05:42:32,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:42:32,136 INFO L225 Difference]: With dead ends: 10622 [2020-11-07 05:42:32,137 INFO L226 Difference]: Without dead ends: 5270 [2020-11-07 05:42:32,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-11-07 05:42:32,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5270 states. [2020-11-07 05:42:33,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5270 to 5260. [2020-11-07 05:42:33,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5260 states. [2020-11-07 05:42:33,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 5969 transitions. [2020-11-07 05:42:33,544 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 5969 transitions. Word has length 288 [2020-11-07 05:42:33,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:42:33,544 INFO L481 AbstractCegarLoop]: Abstraction has 5260 states and 5969 transitions. [2020-11-07 05:42:33,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-07 05:42:33,545 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 5969 transitions. [2020-11-07 05:42:33,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-11-07 05:42:33,558 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:42:33,559 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:42:33,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-07 05:42:33,559 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:42:33,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:42:33,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1192600396, now seen corresponding path program 1 times [2020-11-07 05:42:33,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:42:33,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507758796] [2020-11-07 05:42:33,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:42:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:33,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:42:33,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:33,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-07 05:42:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:33,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-07 05:42:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:33,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-11-07 05:42:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:33,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-11-07 05:42:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:34,048 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 173 proven. 55 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-11-07 05:42:34,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507758796] [2020-11-07 05:42:34,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:42:34,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-11-07 05:42:34,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959812527] [2020-11-07 05:42:34,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-07 05:42:34,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:42:34,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-07 05:42:34,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-11-07 05:42:34,051 INFO L87 Difference]: Start difference. First operand 5260 states and 5969 transitions. Second operand 13 states. [2020-11-07 05:42:34,475 WARN L194 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 92 [2020-11-07 05:42:34,909 WARN L194 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 92 [2020-11-07 05:42:36,218 WARN L194 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-11-07 05:42:36,608 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-11-07 05:42:36,836 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:42:37,600 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:42:41,844 WARN L194 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-11-07 05:42:42,501 WARN L194 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-11-07 05:42:43,967 WARN L194 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-11-07 05:42:45,295 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-11-07 05:42:47,162 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:42:49,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:42:49,056 INFO L93 Difference]: Finished difference Result 11648 states and 13283 transitions. [2020-11-07 05:42:49,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-11-07 05:42:49,057 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 310 [2020-11-07 05:42:49,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:42:49,081 INFO L225 Difference]: With dead ends: 11648 [2020-11-07 05:42:49,081 INFO L226 Difference]: Without dead ends: 4715 [2020-11-07 05:42:49,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1534 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=803, Invalid=4027, Unknown=0, NotChecked=0, Total=4830 [2020-11-07 05:42:49,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4715 states. [2020-11-07 05:42:50,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4715 to 4184. [2020-11-07 05:42:50,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4184 states. [2020-11-07 05:42:50,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4184 states to 4184 states and 4581 transitions. [2020-11-07 05:42:50,227 INFO L78 Accepts]: Start accepts. Automaton has 4184 states and 4581 transitions. Word has length 310 [2020-11-07 05:42:50,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:42:50,227 INFO L481 AbstractCegarLoop]: Abstraction has 4184 states and 4581 transitions. [2020-11-07 05:42:50,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-07 05:42:50,227 INFO L276 IsEmpty]: Start isEmpty. Operand 4184 states and 4581 transitions. [2020-11-07 05:42:50,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-11-07 05:42:50,235 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:42:50,235 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-07 05:42:50,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-07 05:42:50,236 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:42:50,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:42:50,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1380175551, now seen corresponding path program 1 times [2020-11-07 05:42:50,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:42:50,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289413282] [2020-11-07 05:42:50,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:42:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:50,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:42:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:50,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-07 05:42:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:50,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-11-07 05:42:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:50,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-11-07 05:42:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:50,579 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 172 proven. 10 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-07 05:42:50,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289413282] [2020-11-07 05:42:50,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:42:50,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 05:42:50,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274722562] [2020-11-07 05:42:50,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:42:50,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:42:50,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:42:50,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:42:50,582 INFO L87 Difference]: Start difference. First operand 4184 states and 4581 transitions. Second operand 7 states. [2020-11-07 05:42:54,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:42:54,510 INFO L93 Difference]: Finished difference Result 8247 states and 9011 transitions. [2020-11-07 05:42:54,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 05:42:54,511 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 311 [2020-11-07 05:42:54,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:42:54,526 INFO L225 Difference]: With dead ends: 8247 [2020-11-07 05:42:54,526 INFO L226 Difference]: Without dead ends: 3891 [2020-11-07 05:42:54,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-11-07 05:42:54,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3891 states. [2020-11-07 05:42:55,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3891 to 3720. [2020-11-07 05:42:55,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3720 states. [2020-11-07 05:42:55,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 3986 transitions. [2020-11-07 05:42:55,649 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 3986 transitions. Word has length 311 [2020-11-07 05:42:55,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:42:55,649 INFO L481 AbstractCegarLoop]: Abstraction has 3720 states and 3986 transitions. [2020-11-07 05:42:55,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:42:55,650 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 3986 transitions. [2020-11-07 05:42:55,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-11-07 05:42:55,655 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:42:55,655 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:42:55,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-07 05:42:55,655 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:42:55,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:42:55,656 INFO L82 PathProgramCache]: Analyzing trace with hash -439154888, now seen corresponding path program 1 times [2020-11-07 05:42:55,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:42:55,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852317911] [2020-11-07 05:42:55,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:42:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:55,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:42:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:55,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-07 05:42:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:55,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-11-07 05:42:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:56,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-11-07 05:42:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:42:56,478 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 234 proven. 18 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-11-07 05:42:56,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852317911] [2020-11-07 05:42:56,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:42:56,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-11-07 05:42:56,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531421218] [2020-11-07 05:42:56,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-07 05:42:56,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:42:56,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-07 05:42:56,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-11-07 05:42:56,481 INFO L87 Difference]: Start difference. First operand 3720 states and 3986 transitions. Second operand 14 states. [2020-11-07 05:42:56,823 WARN L194 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-11-07 05:42:57,252 WARN L194 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 98 [2020-11-07 05:42:57,610 WARN L194 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2020-11-07 05:42:58,170 WARN L194 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-11-07 05:42:58,705 WARN L194 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2020-11-07 05:42:59,131 WARN L194 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 92 [2020-11-07 05:42:59,783 WARN L194 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-11-07 05:43:00,296 WARN L194 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 95 [2020-11-07 05:43:02,050 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 05:43:03,221 WARN L194 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-11-07 05:43:04,262 WARN L194 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 96 [2020-11-07 05:43:05,454 WARN L194 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-11-07 05:43:06,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:43:06,878 INFO L93 Difference]: Finished difference Result 7361 states and 7929 transitions. [2020-11-07 05:43:06,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-07 05:43:06,879 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 333 [2020-11-07 05:43:06,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:43:06,894 INFO L225 Difference]: With dead ends: 7361 [2020-11-07 05:43:06,894 INFO L226 Difference]: Without dead ends: 3495 [2020-11-07 05:43:06,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=452, Invalid=1440, Unknown=0, NotChecked=0, Total=1892 [2020-11-07 05:43:06,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3495 states. [2020-11-07 05:43:07,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3495 to 3183. [2020-11-07 05:43:07,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3183 states. [2020-11-07 05:43:07,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3183 states to 3183 states and 3387 transitions. [2020-11-07 05:43:07,852 INFO L78 Accepts]: Start accepts. Automaton has 3183 states and 3387 transitions. Word has length 333 [2020-11-07 05:43:07,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:43:07,852 INFO L481 AbstractCegarLoop]: Abstraction has 3183 states and 3387 transitions. [2020-11-07 05:43:07,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-07 05:43:07,852 INFO L276 IsEmpty]: Start isEmpty. Operand 3183 states and 3387 transitions. [2020-11-07 05:43:07,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-11-07 05:43:07,858 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:43:07,858 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:43:07,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-07 05:43:07,858 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:43:07,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:43:07,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1601746571, now seen corresponding path program 1 times [2020-11-07 05:43:07,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:43:07,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019712936] [2020-11-07 05:43:07,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:43:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:43:08,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:43:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:43:08,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-07 05:43:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:43:08,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 05:43:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:43:08,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-11-07 05:43:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:43:08,557 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 164 proven. 3 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-11-07 05:43:08,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019712936] [2020-11-07 05:43:08,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:43:08,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 05:43:08,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947242207] [2020-11-07 05:43:08,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 05:43:08,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:43:08,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 05:43:08,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:43:08,562 INFO L87 Difference]: Start difference. First operand 3183 states and 3387 transitions. Second operand 10 states. [2020-11-07 05:43:10,061 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:43:10,412 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-11-07 05:43:12,175 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 05:43:12,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:43:12,964 INFO L93 Difference]: Finished difference Result 6413 states and 6872 transitions. [2020-11-07 05:43:12,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-07 05:43:12,965 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 344 [2020-11-07 05:43:12,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:43:12,978 INFO L225 Difference]: With dead ends: 6413 [2020-11-07 05:43:12,979 INFO L226 Difference]: Without dead ends: 3455 [2020-11-07 05:43:12,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2020-11-07 05:43:12,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3455 states. [2020-11-07 05:43:13,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3455 to 3145. [2020-11-07 05:43:13,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3145 states. [2020-11-07 05:43:13,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3145 states to 3145 states and 3342 transitions. [2020-11-07 05:43:13,946 INFO L78 Accepts]: Start accepts. Automaton has 3145 states and 3342 transitions. Word has length 344 [2020-11-07 05:43:13,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:43:13,947 INFO L481 AbstractCegarLoop]: Abstraction has 3145 states and 3342 transitions. [2020-11-07 05:43:13,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 05:43:13,947 INFO L276 IsEmpty]: Start isEmpty. Operand 3145 states and 3342 transitions. [2020-11-07 05:43:13,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-11-07 05:43:13,951 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:43:13,952 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 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] [2020-11-07 05:43:13,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-07 05:43:13,952 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:43:13,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:43:13,953 INFO L82 PathProgramCache]: Analyzing trace with hash -301344389, now seen corresponding path program 1 times [2020-11-07 05:43:13,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:43:13,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989273518] [2020-11-07 05:43:13,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:43:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:43:14,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:43:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:43:14,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-07 05:43:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:43:14,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 05:43:14,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:43:14,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-11-07 05:43:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:43:14,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-11-07 05:43:14,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:43:14,334 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 174 proven. 6 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-11-07 05:43:14,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989273518] [2020-11-07 05:43:14,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:43:14,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-07 05:43:14,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126478413] [2020-11-07 05:43:14,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 05:43:14,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:43:14,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 05:43:14,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-07 05:43:14,337 INFO L87 Difference]: Start difference. First operand 3145 states and 3342 transitions. Second operand 9 states. [2020-11-07 05:43:16,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:43:16,559 INFO L93 Difference]: Finished difference Result 5435 states and 5803 transitions. [2020-11-07 05:43:16,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 05:43:16,559 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 349 [2020-11-07 05:43:16,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:43:16,565 INFO L225 Difference]: With dead ends: 5435 [2020-11-07 05:43:16,565 INFO L226 Difference]: Without dead ends: 2264 [2020-11-07 05:43:16,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-11-07 05:43:16,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2020-11-07 05:43:17,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 2256. [2020-11-07 05:43:17,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2256 states. [2020-11-07 05:43:17,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 2384 transitions. [2020-11-07 05:43:17,141 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 2384 transitions. Word has length 349 [2020-11-07 05:43:17,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:43:17,141 INFO L481 AbstractCegarLoop]: Abstraction has 2256 states and 2384 transitions. [2020-11-07 05:43:17,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 05:43:17,141 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 2384 transitions. [2020-11-07 05:43:17,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-11-07 05:43:17,146 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:43:17,146 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:43:17,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-07 05:43:17,146 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:43:17,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:43:17,147 INFO L82 PathProgramCache]: Analyzing trace with hash 546736561, now seen corresponding path program 1 times [2020-11-07 05:43:17,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:43:17,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958644491] [2020-11-07 05:43:17,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:43:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:43:17,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:43:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:43:17,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-07 05:43:17,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:43:17,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 05:43:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:43:17,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-11-07 05:43:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:43:17,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-11-07 05:43:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:43:17,550 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 276 proven. 23 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-11-07 05:43:17,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958644491] [2020-11-07 05:43:17,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:43:17,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 05:43:17,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714517894] [2020-11-07 05:43:17,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 05:43:17,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:43:17,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 05:43:17,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:43:17,553 INFO L87 Difference]: Start difference. First operand 2256 states and 2384 transitions. Second operand 10 states. [2020-11-07 05:43:19,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:43:19,501 INFO L93 Difference]: Finished difference Result 2890 states and 3048 transitions. [2020-11-07 05:43:19,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-07 05:43:19,501 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 375 [2020-11-07 05:43:19,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:43:19,503 INFO L225 Difference]: With dead ends: 2890 [2020-11-07 05:43:19,503 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 05:43:19,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-11-07 05:43:19,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 05:43:19,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 05:43:19,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 05:43:19,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 05:43:19,508 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 375 [2020-11-07 05:43:19,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:43:19,508 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 05:43:19,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 05:43:19,508 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 05:43:19,509 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 05:43:19,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-07 05:43:19,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 05:43:19,973 WARN L194 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-11-07 05:44:05,048 WARN L194 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 217 [2020-11-07 05:44:44,526 WARN L194 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 217 [2020-11-07 05:45:31,608 WARN L194 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 217 [2020-11-07 05:45:31,754 WARN L194 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 217 [2020-11-07 05:45:31,899 WARN L194 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 217 [2020-11-07 05:45:32,049 WARN L194 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 217 [2020-11-07 05:45:33,677 WARN L194 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 188 [2020-11-07 05:45:35,599 WARN L194 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 188 [2020-11-07 05:45:49,592 WARN L194 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 217 [2020-11-07 05:45:49,742 WARN L194 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 217 [2020-11-07 05:45:49,894 WARN L194 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 217 [2020-11-07 05:46:10,320 WARN L194 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 217 [2020-11-07 05:46:28,300 WARN L194 SmtUtils]: Spent 2.62 s on a formula simplification. DAG size of input: 268 DAG size of output: 84 [2020-11-07 05:46:30,162 WARN L194 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 276 DAG size of output: 82 [2020-11-07 05:46:35,387 WARN L194 SmtUtils]: Spent 5.21 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-11-07 05:46:37,394 WARN L194 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 288 DAG size of output: 83 [2020-11-07 05:46:40,015 WARN L194 SmtUtils]: Spent 2.61 s on a formula simplification. DAG size of input: 268 DAG size of output: 84 [2020-11-07 05:46:45,222 WARN L194 SmtUtils]: Spent 5.20 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-11-07 05:46:50,413 WARN L194 SmtUtils]: Spent 5.18 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-11-07 05:46:55,610 WARN L194 SmtUtils]: Spent 5.19 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-11-07 05:46:58,268 WARN L194 SmtUtils]: Spent 2.65 s on a formula simplification. DAG size of input: 268 DAG size of output: 84 [2020-11-07 05:47:00,945 WARN L194 SmtUtils]: Spent 2.67 s on a formula simplification. DAG size of input: 268 DAG size of output: 84 [2020-11-07 05:47:03,517 WARN L194 SmtUtils]: Spent 2.56 s on a formula simplification. DAG size of input: 266 DAG size of output: 89 [2020-11-07 05:47:08,753 WARN L194 SmtUtils]: Spent 5.23 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-11-07 05:47:10,430 WARN L194 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-11-07 05:47:12,657 WARN L194 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 284 DAG size of output: 85 [2020-11-07 05:47:14,573 WARN L194 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 279 DAG size of output: 84 [2020-11-07 05:47:16,243 WARN L194 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-11-07 05:47:18,071 WARN L194 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 227 DAG size of output: 84 [2020-11-07 05:47:19,759 WARN L194 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-11-07 05:47:21,739 WARN L194 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 230 DAG size of output: 89 [2020-11-07 05:47:23,409 WARN L194 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-11-07 05:47:25,098 WARN L194 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 230 DAG size of output: 71 [2020-11-07 05:47:29,941 WARN L194 SmtUtils]: Spent 4.83 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-11-07 05:47:34,787 WARN L194 SmtUtils]: Spent 4.84 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-11-07 05:47:36,858 WARN L194 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 249 DAG size of output: 85 [2020-11-07 05:47:38,540 WARN L194 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-11-07 05:47:41,255 WARN L194 SmtUtils]: Spent 2.68 s on a formula simplification. DAG size of input: 268 DAG size of output: 84 [2020-11-07 05:47:43,934 WARN L194 SmtUtils]: Spent 2.67 s on a formula simplification. DAG size of input: 268 DAG size of output: 84 [2020-11-07 05:47:49,237 WARN L194 SmtUtils]: Spent 5.29 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-11-07 05:47:51,379 WARN L194 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 292 DAG size of output: 86 [2020-11-07 05:47:54,035 WARN L194 SmtUtils]: Spent 2.65 s on a formula simplification. DAG size of input: 284 DAG size of output: 88 [2020-11-07 05:47:58,955 WARN L194 SmtUtils]: Spent 4.91 s on a formula simplification. DAG size of input: 369 DAG size of output: 108 [2020-11-07 05:48:01,134 WARN L194 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 287 DAG size of output: 85 [2020-11-07 05:48:03,036 WARN L194 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 235 DAG size of output: 84 [2020-11-07 05:48:05,202 WARN L194 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 278 DAG size of output: 84 [2020-11-07 05:48:06,986 WARN L194 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 226 DAG size of output: 81 [2020-11-07 05:48:08,900 WARN L194 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 227 DAG size of output: 83 [2020-11-07 05:48:13,835 WARN L194 SmtUtils]: Spent 4.92 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-11-07 05:48:15,543 WARN L194 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-11-07 05:48:17,265 WARN L194 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-11-07 05:48:22,199 WARN L194 SmtUtils]: Spent 4.92 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-11-07 05:48:24,402 WARN L194 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 278 DAG size of output: 84 [2020-11-07 05:48:26,507 WARN L194 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 276 DAG size of output: 83 [2020-11-07 05:48:31,452 WARN L194 SmtUtils]: Spent 4.93 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-11-07 05:48:33,417 WARN L194 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 235 DAG size of output: 85 [2020-11-07 05:48:36,069 WARN L194 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 282 DAG size of output: 90 [2020-11-07 05:48:41,086 WARN L194 SmtUtils]: Spent 5.01 s on a formula simplification. DAG size of input: 369 DAG size of output: 108 [2020-11-07 05:48:46,080 WARN L194 SmtUtils]: Spent 4.98 s on a formula simplification. DAG size of input: 369 DAG size of output: 108 [2020-11-07 05:48:47,931 WARN L194 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 233 DAG size of output: 83 [2020-11-07 05:48:49,989 WARN L194 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 274 DAG size of output: 83 [2020-11-07 05:48:51,952 WARN L194 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 248 DAG size of output: 86 [2020-11-07 05:48:53,912 WARN L194 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 232 DAG size of output: 84 [2020-11-07 05:48:55,654 WARN L194 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-11-07 05:48:57,579 WARN L194 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 235 DAG size of output: 84 [2020-11-07 05:48:59,419 WARN L194 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 226 DAG size of output: 82 [2020-11-07 05:49:01,457 WARN L194 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 249 DAG size of output: 83 [2020-11-07 05:49:03,186 WARN L194 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-11-07 05:49:05,142 WARN L194 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 233 DAG size of output: 83 [2020-11-07 05:49:10,190 WARN L194 SmtUtils]: Spent 5.04 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-11-07 05:49:15,239 WARN L194 SmtUtils]: Spent 5.04 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-11-07 05:49:20,472 WARN L194 SmtUtils]: Spent 5.21 s on a formula simplification. DAG size of input: 377 DAG size of output: 116 [2020-11-07 05:49:22,895 WARN L194 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 295 DAG size of output: 93 [2020-11-07 05:49:24,891 WARN L194 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 276 DAG size of output: 82 [2020-11-07 05:49:29,980 WARN L194 SmtUtils]: Spent 5.08 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-11-07 05:49:32,318 WARN L194 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 284 DAG size of output: 85 [2020-11-07 05:49:35,054 WARN L194 SmtUtils]: Spent 2.72 s on a formula simplification. DAG size of input: 266 DAG size of output: 89 [2020-11-07 05:49:37,141 WARN L194 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 235 DAG size of output: 84 [2020-11-07 05:49:42,651 WARN L194 SmtUtils]: Spent 5.50 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-11-07 05:49:45,404 WARN L194 SmtUtils]: Spent 2.74 s on a formula simplification. DAG size of input: 266 DAG size of output: 89 [2020-11-07 05:49:50,981 WARN L194 SmtUtils]: Spent 5.57 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-11-07 05:49:56,565 WARN L194 SmtUtils]: Spent 5.57 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-11-07 05:50:02,135 WARN L194 SmtUtils]: Spent 5.56 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-11-07 05:50:04,898 WARN L194 SmtUtils]: Spent 2.75 s on a formula simplification. DAG size of input: 266 DAG size of output: 89 [2020-11-07 05:50:06,812 WARN L194 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 233 DAG size of output: 83 [2020-11-07 05:50:11,949 WARN L194 SmtUtils]: Spent 5.13 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-11-07 05:50:14,723 WARN L194 SmtUtils]: Spent 2.76 s on a formula simplification. DAG size of input: 288 DAG size of output: 92 [2020-11-07 05:50:17,222 WARN L194 SmtUtils]: Spent 2.49 s on a formula simplification. DAG size of input: 311 DAG size of output: 87 [2020-11-07 05:50:19,020 WARN L194 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-11-07 05:50:20,830 WARN L194 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-11-07 05:50:22,772 WARN L194 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 232 DAG size of output: 83 [2020-11-07 05:50:24,557 WARN L194 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-11-07 05:50:26,379 WARN L194 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-11-07 05:50:31,520 WARN L194 SmtUtils]: Spent 5.13 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-11-07 05:50:36,687 WARN L194 SmtUtils]: Spent 5.16 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-11-07 05:50:38,797 WARN L194 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 225 DAG size of output: 87 [2020-11-07 05:50:40,755 WARN L194 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 231 DAG size of output: 83 [2020-11-07 05:50:42,575 WARN L194 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 229 DAG size of output: 71 [2020-11-07 05:50:44,519 WARN L194 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 230 DAG size of output: 83 [2020-11-07 05:50:46,797 WARN L194 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 290 DAG size of output: 85 [2020-11-07 05:50:52,406 WARN L194 SmtUtils]: Spent 5.60 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-11-07 05:50:57,598 WARN L194 SmtUtils]: Spent 5.18 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-11-07 05:51:02,816 WARN L194 SmtUtils]: Spent 5.21 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-11-07 05:51:04,971 WARN L194 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 234 DAG size of output: 87 [2020-11-07 05:51:07,789 WARN L194 SmtUtils]: Spent 2.81 s on a formula simplification. DAG size of input: 266 DAG size of output: 89 [2020-11-07 05:51:10,619 WARN L194 SmtUtils]: Spent 2.82 s on a formula simplification. DAG size of input: 266 DAG size of output: 89 [2020-11-07 05:51:16,308 WARN L194 SmtUtils]: Spent 5.68 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-11-07 05:51:19,322 WARN L194 SmtUtils]: Spent 3.01 s on a formula simplification. DAG size of input: 268 DAG size of output: 84 [2020-11-07 05:51:25,471 WARN L194 SmtUtils]: Spent 6.14 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-11-07 05:51:31,528 WARN L194 SmtUtils]: Spent 6.05 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-11-07 05:51:33,700 WARN L194 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 232 DAG size of output: 83 [2020-11-07 05:51:35,892 WARN L194 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 277 DAG size of output: 91 [2020-11-07 05:51:37,984 WARN L194 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 277 DAG size of output: 71 [2020-11-07 05:51:39,953 WARN L194 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-11-07 05:51:41,906 WARN L194 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-11-07 05:51:47,382 WARN L194 SmtUtils]: Spent 5.47 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-11-07 05:51:49,357 WARN L194 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-11-07 05:51:54,760 WARN L194 SmtUtils]: Spent 5.39 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-11-07 05:51:56,017 WARN L194 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 188 DAG size of output: 66 [2020-11-07 05:51:57,990 WARN L194 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-11-07 05:51:59,861 WARN L194 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 276 DAG size of output: 85 [2020-11-07 05:52:05,168 WARN L194 SmtUtils]: Spent 5.30 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-11-07 05:52:10,534 WARN L194 SmtUtils]: Spent 5.36 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-11-07 05:52:15,880 WARN L194 SmtUtils]: Spent 5.34 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-11-07 05:52:17,784 WARN L194 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 230 DAG size of output: 71 [2020-11-07 05:52:19,951 WARN L194 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 276 DAG size of output: 85 [2020-11-07 05:52:21,887 WARN L194 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-11-07 05:52:27,727 WARN L194 SmtUtils]: Spent 5.83 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-11-07 05:52:30,863 WARN L194 SmtUtils]: Spent 3.12 s on a formula simplification. DAG size of input: 268 DAG size of output: 84 [2020-11-07 05:52:33,948 WARN L194 SmtUtils]: Spent 3.08 s on a formula simplification. DAG size of input: 266 DAG size of output: 89 [2020-11-07 05:52:37,077 WARN L194 SmtUtils]: Spent 3.12 s on a formula simplification. DAG size of input: 268 DAG size of output: 84 [2020-11-07 05:52:39,507 WARN L194 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 289 DAG size of output: 86 [2020-11-07 05:52:41,356 WARN L194 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 233 DAG size of output: 84 [2020-11-07 05:52:43,307 WARN L194 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-11-07 05:52:45,677 WARN L194 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 281 DAG size of output: 86 [2020-11-07 05:52:47,673 WARN L194 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 225 DAG size of output: 71 [2020-11-07 05:52:49,837 WARN L194 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 278 DAG size of output: 82 [2020-11-07 05:52:52,011 WARN L194 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 276 DAG size of output: 82 [2020-11-07 05:52:53,948 WARN L194 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-11-07 05:52:56,157 WARN L194 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 231 DAG size of output: 84 [2020-11-07 05:52:58,247 WARN L194 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 232 DAG size of output: 71 [2020-11-07 05:53:03,763 WARN L194 SmtUtils]: Spent 5.51 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-11-07 05:53:06,133 WARN L194 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 275 DAG size of output: 71 [2020-11-07 05:53:11,643 WARN L194 SmtUtils]: Spent 5.50 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-11-07 05:53:17,202 WARN L194 SmtUtils]: Spent 5.55 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-11-07 05:53:19,130 WARN L194 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-11-07 05:53:21,368 WARN L194 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 227 DAG size of output: 87 [2020-11-07 05:53:23,497 WARN L194 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 230 DAG size of output: 88 [2020-11-07 05:53:26,048 WARN L194 SmtUtils]: Spent 2.54 s on a formula simplification. DAG size of input: 284 DAG size of output: 85 [2020-11-07 05:53:28,200 WARN L194 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 240 DAG size of output: 84 [2020-11-07 05:53:30,385 WARN L194 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 235 DAG size of output: 84 [2020-11-07 05:53:32,456 WARN L194 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 228 DAG size of output: 80 [2020-11-07 05:53:34,652 WARN L194 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 228 DAG size of output: 88 [2020-11-07 05:53:36,742 WARN L194 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 275 DAG size of output: 84 [2020-11-07 05:53:38,604 WARN L194 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-11-07 05:53:41,470 WARN L194 SmtUtils]: Spent 2.86 s on a formula simplification. DAG size of input: 266 DAG size of output: 89 [2020-11-07 05:53:44,348 WARN L194 SmtUtils]: Spent 2.87 s on a formula simplification. DAG size of input: 266 DAG size of output: 89 [2020-11-07 05:53:50,148 WARN L194 SmtUtils]: Spent 5.79 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-11-07 05:53:53,062 WARN L194 SmtUtils]: Spent 2.90 s on a formula simplification. DAG size of input: 266 DAG size of output: 89 [2020-11-07 05:53:58,849 WARN L194 SmtUtils]: Spent 5.78 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-11-07 05:54:01,746 WARN L194 SmtUtils]: Spent 2.88 s on a formula simplification. DAG size of input: 266 DAG size of output: 89 [2020-11-07 05:54:04,286 WARN L194 SmtUtils]: Spent 2.50 s on a formula simplification. DAG size of input: 292 DAG size of output: 88 [2020-11-07 05:54:06,595 WARN L194 SmtUtils]: Spent 2.30 s on a formula simplification. DAG size of input: 226 DAG size of output: 89 [2020-11-07 05:54:08,480 WARN L194 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-11-07 05:54:13,823 WARN L194 SmtUtils]: Spent 5.33 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-11-07 05:54:15,834 WARN L194 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 230 DAG size of output: 71 [2020-11-07 05:54:17,817 WARN L194 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 230 DAG size of output: 80 [2020-11-07 05:54:19,704 WARN L194 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 212 DAG size of output: 71