/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 06:20:10,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 06:20:10,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 06:20:10,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 06:20:10,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 06:20:10,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 06:20:10,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 06:20:10,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 06:20:10,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 06:20:10,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 06:20:10,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 06:20:10,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 06:20:10,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 06:20:10,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 06:20:10,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 06:20:10,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 06:20:10,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 06:20:10,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 06:20:10,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 06:20:10,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 06:20:10,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 06:20:10,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 06:20:10,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 06:20:10,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 06:20:10,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 06:20:10,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 06:20:10,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 06:20:10,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 06:20:10,992 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 06:20:11,018 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 06:20:11,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 06:20:11,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 06:20:11,023 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 06:20:11,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 06:20:11,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 06:20:11,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 06:20:11,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 06:20:11,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 06:20:11,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 06:20:11,025 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 06:20:11,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 06:20:11,026 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 06:20:11,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 06:20:11,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 06:20:11,027 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 06:20:11,027 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 06:20:11,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 06:20:11,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 06:20:11,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 06:20:11,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 06:20:11,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 06:20:11,028 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 06:20:11,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 06:20:11,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 06:20:11,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 06:20:11,454 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 06:20:11,455 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 06:20:11,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-11-07 06:20:11,532 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1633c7857/0798d76525a34624904264fa5ad50889/FLAGe2e0897d5 [2020-11-07 06:20:12,235 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 06:20:12,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-11-07 06:20:12,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1633c7857/0798d76525a34624904264fa5ad50889/FLAGe2e0897d5 [2020-11-07 06:20:12,486 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1633c7857/0798d76525a34624904264fa5ad50889 [2020-11-07 06:20:12,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 06:20:12,502 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 06:20:12,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 06:20:12,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 06:20:12,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 06:20:12,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:20:12" (1/1) ... [2020-11-07 06:20:12,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62d463e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:20:12, skipping insertion in model container [2020-11-07 06:20:12,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:20:12" (1/1) ... [2020-11-07 06:20:12,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 06:20:12,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 06:20:13,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:20:13,081 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 06:20:13,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:20:13,291 INFO L208 MainTranslator]: Completed translation [2020-11-07 06:20:13,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:20:13 WrapperNode [2020-11-07 06:20:13,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 06:20:13,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 06:20:13,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 06:20:13,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 06:20:13,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:20:13" (1/1) ... [2020-11-07 06:20:13,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:20:13" (1/1) ... [2020-11-07 06:20:13,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:20:13" (1/1) ... [2020-11-07 06:20:13,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:20:13" (1/1) ... [2020-11-07 06:20:13,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:20:13" (1/1) ... [2020-11-07 06:20:13,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:20:13" (1/1) ... [2020-11-07 06:20:13,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:20:13" (1/1) ... [2020-11-07 06:20:13,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 06:20:13,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 06:20:13,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 06:20:13,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 06:20:13,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:20:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 06:20:13,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 06:20:13,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 06:20:13,518 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 06:20:13,518 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-11-07 06:20:13,518 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 06:20:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-11-07 06:20:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 06:20:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 06:20:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 06:20:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 06:20:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 06:20:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-07 06:20:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 06:20:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 06:20:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 06:20:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 06:20:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 06:20:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 06:20:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 06:20:15,003 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 06:20:15,004 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 06:20:15,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:20:15 BoogieIcfgContainer [2020-11-07 06:20:15,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 06:20:15,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 06:20:15,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 06:20:15,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 06:20:15,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:20:12" (1/3) ... [2020-11-07 06:20:15,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5667f7f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:20:15, skipping insertion in model container [2020-11-07 06:20:15,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:20:13" (2/3) ... [2020-11-07 06:20:15,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5667f7f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:20:15, skipping insertion in model container [2020-11-07 06:20:15,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:20:15" (3/3) ... [2020-11-07 06:20:15,016 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem10_label44.c [2020-11-07 06:20:15,032 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 06:20:15,037 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 06:20:15,049 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 06:20:15,074 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 06:20:15,075 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 06:20:15,075 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 06:20:15,075 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 06:20:15,075 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 06:20:15,075 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 06:20:15,075 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 06:20:15,076 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 06:20:15,100 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states. [2020-11-07 06:20:15,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-07 06:20:15,116 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:20:15,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:20:15,117 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:20:15,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:20:15,131 INFO L82 PathProgramCache]: Analyzing trace with hash 557729620, now seen corresponding path program 1 times [2020-11-07 06:20:15,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:20:15,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80333647] [2020-11-07 06:20:15,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:20:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:15,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:20:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:15,766 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 06:20:15,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80333647] [2020-11-07 06:20:15,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:20:15,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 06:20:15,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561534015] [2020-11-07 06:20:15,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 06:20:15,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:20:15,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 06:20:15,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-07 06:20:15,804 INFO L87 Difference]: Start difference. First operand 468 states. Second operand 5 states. [2020-11-07 06:20:19,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:20:19,213 INFO L93 Difference]: Finished difference Result 1239 states and 1811 transitions. [2020-11-07 06:20:19,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 06:20:19,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-11-07 06:20:19,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:20:19,267 INFO L225 Difference]: With dead ends: 1239 [2020-11-07 06:20:19,267 INFO L226 Difference]: Without dead ends: 716 [2020-11-07 06:20:19,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-07 06:20:19,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-11-07 06:20:19,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 704. [2020-11-07 06:20:19,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2020-11-07 06:20:19,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 935 transitions. [2020-11-07 06:20:19,562 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 935 transitions. Word has length 85 [2020-11-07 06:20:19,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:20:19,566 INFO L481 AbstractCegarLoop]: Abstraction has 704 states and 935 transitions. [2020-11-07 06:20:19,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 06:20:19,566 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 935 transitions. [2020-11-07 06:20:19,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-11-07 06:20:19,587 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:20:19,588 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-07 06:20:19,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 06:20:19,592 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:20:19,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:20:19,593 INFO L82 PathProgramCache]: Analyzing trace with hash 675192484, now seen corresponding path program 1 times [2020-11-07 06:20:19,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:20:19,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468253435] [2020-11-07 06:20:19,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:20:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:19,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:20:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:19,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 06:20:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:20,032 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:20:20,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468253435] [2020-11-07 06:20:20,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:20:20,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 06:20:20,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535892424] [2020-11-07 06:20:20,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 06:20:20,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:20:20,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 06:20:20,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-07 06:20:20,072 INFO L87 Difference]: Start difference. First operand 704 states and 935 transitions. Second operand 8 states. [2020-11-07 06:20:22,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:20:22,986 INFO L93 Difference]: Finished difference Result 1569 states and 2140 transitions. [2020-11-07 06:20:22,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 06:20:22,987 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 168 [2020-11-07 06:20:22,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:20:23,000 INFO L225 Difference]: With dead ends: 1569 [2020-11-07 06:20:23,001 INFO L226 Difference]: Without dead ends: 888 [2020-11-07 06:20:23,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-11-07 06:20:23,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2020-11-07 06:20:23,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 862. [2020-11-07 06:20:23,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 862 states. [2020-11-07 06:20:23,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1099 transitions. [2020-11-07 06:20:23,164 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1099 transitions. Word has length 168 [2020-11-07 06:20:23,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:20:23,165 INFO L481 AbstractCegarLoop]: Abstraction has 862 states and 1099 transitions. [2020-11-07 06:20:23,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 06:20:23,165 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1099 transitions. [2020-11-07 06:20:23,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-11-07 06:20:23,169 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:20:23,169 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-07 06:20:23,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 06:20:23,170 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:20:23,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:20:23,171 INFO L82 PathProgramCache]: Analyzing trace with hash 791724655, now seen corresponding path program 1 times [2020-11-07 06:20:23,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:20:23,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285587005] [2020-11-07 06:20:23,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:20:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:23,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:20:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:23,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 06:20:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:23,694 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 43 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:20:23,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285587005] [2020-11-07 06:20:23,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:20:23,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-11-07 06:20:23,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022989400] [2020-11-07 06:20:23,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-07 06:20:23,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:20:23,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-07 06:20:23,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-11-07 06:20:23,706 INFO L87 Difference]: Start difference. First operand 862 states and 1099 transitions. Second operand 13 states. [2020-11-07 06:20:27,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:20:27,895 INFO L93 Difference]: Finished difference Result 2544 states and 3505 transitions. [2020-11-07 06:20:27,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-07 06:20:27,897 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 174 [2020-11-07 06:20:27,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:20:27,926 INFO L225 Difference]: With dead ends: 2544 [2020-11-07 06:20:27,926 INFO L226 Difference]: Without dead ends: 1662 [2020-11-07 06:20:27,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2020-11-07 06:20:27,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2020-11-07 06:20:28,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1365. [2020-11-07 06:20:28,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1365 states. [2020-11-07 06:20:28,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1820 transitions. [2020-11-07 06:20:28,249 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1820 transitions. Word has length 174 [2020-11-07 06:20:28,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:20:28,251 INFO L481 AbstractCegarLoop]: Abstraction has 1365 states and 1820 transitions. [2020-11-07 06:20:28,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-07 06:20:28,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1820 transitions. [2020-11-07 06:20:28,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-11-07 06:20:28,256 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:20:28,256 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:20:28,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 06:20:28,257 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:20:28,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:20:28,257 INFO L82 PathProgramCache]: Analyzing trace with hash -944358045, now seen corresponding path program 1 times [2020-11-07 06:20:28,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:20:28,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938083186] [2020-11-07 06:20:28,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:20:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:28,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:20:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:28,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 06:20:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:28,514 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:20:28,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938083186] [2020-11-07 06:20:28,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:20:28,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-07 06:20:28,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234687476] [2020-11-07 06:20:28,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 06:20:28,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:20:28,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 06:20:28,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 06:20:28,517 INFO L87 Difference]: Start difference. First operand 1365 states and 1820 transitions. Second operand 7 states. [2020-11-07 06:20:31,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:20:31,662 INFO L93 Difference]: Finished difference Result 3403 states and 4719 transitions. [2020-11-07 06:20:31,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 06:20:31,663 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 183 [2020-11-07 06:20:31,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:20:31,684 INFO L225 Difference]: With dead ends: 3403 [2020-11-07 06:20:31,684 INFO L226 Difference]: Without dead ends: 2061 [2020-11-07 06:20:31,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-11-07 06:20:31,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2020-11-07 06:20:31,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 1851. [2020-11-07 06:20:31,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1851 states. [2020-11-07 06:20:31,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1851 states to 1851 states and 2406 transitions. [2020-11-07 06:20:31,999 INFO L78 Accepts]: Start accepts. Automaton has 1851 states and 2406 transitions. Word has length 183 [2020-11-07 06:20:32,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:20:32,000 INFO L481 AbstractCegarLoop]: Abstraction has 1851 states and 2406 transitions. [2020-11-07 06:20:32,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 06:20:32,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1851 states and 2406 transitions. [2020-11-07 06:20:32,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-11-07 06:20:32,006 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:20:32,007 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:20:32,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 06:20:32,007 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:20:32,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:20:32,008 INFO L82 PathProgramCache]: Analyzing trace with hash 54411606, now seen corresponding path program 1 times [2020-11-07 06:20:32,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:20:32,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198530499] [2020-11-07 06:20:32,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:20:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:32,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:20:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:32,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 06:20:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:32,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-11-07 06:20:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:32,333 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-07 06:20:32,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198530499] [2020-11-07 06:20:32,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:20:32,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 06:20:32,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871682977] [2020-11-07 06:20:32,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 06:20:32,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:20:32,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 06:20:32,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 06:20:32,338 INFO L87 Difference]: Start difference. First operand 1851 states and 2406 transitions. Second operand 7 states. [2020-11-07 06:20:36,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:20:36,175 INFO L93 Difference]: Finished difference Result 5119 states and 7026 transitions. [2020-11-07 06:20:36,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 06:20:36,175 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 253 [2020-11-07 06:20:36,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:20:36,207 INFO L225 Difference]: With dead ends: 5119 [2020-11-07 06:20:36,207 INFO L226 Difference]: Without dead ends: 3291 [2020-11-07 06:20:36,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-11-07 06:20:36,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3291 states. [2020-11-07 06:20:36,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3291 to 2785. [2020-11-07 06:20:36,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2785 states. [2020-11-07 06:20:36,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 3639 transitions. [2020-11-07 06:20:36,789 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 3639 transitions. Word has length 253 [2020-11-07 06:20:36,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:20:36,789 INFO L481 AbstractCegarLoop]: Abstraction has 2785 states and 3639 transitions. [2020-11-07 06:20:36,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 06:20:36,790 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 3639 transitions. [2020-11-07 06:20:36,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-11-07 06:20:36,798 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:20:36,798 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:20:36,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 06:20:36,799 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:20:36,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:20:36,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1636139253, now seen corresponding path program 1 times [2020-11-07 06:20:36,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:20:36,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932880925] [2020-11-07 06:20:36,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:20:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:36,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:20:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:37,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 06:20:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:37,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-11-07 06:20:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:37,297 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 120 proven. 72 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-07 06:20:37,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932880925] [2020-11-07 06:20:37,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:20:37,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 06:20:37,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392544518] [2020-11-07 06:20:37,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 06:20:37,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:20:37,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 06:20:37,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-11-07 06:20:37,317 INFO L87 Difference]: Start difference. First operand 2785 states and 3639 transitions. Second operand 11 states. [2020-11-07 06:20:37,952 WARN L194 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-11-07 06:20:38,938 WARN L194 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2020-11-07 06:20:39,754 WARN L194 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2020-11-07 06:20:42,475 WARN L194 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-11-07 06:20:43,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:20:43,158 INFO L93 Difference]: Finished difference Result 6848 states and 8725 transitions. [2020-11-07 06:20:43,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-07 06:20:43,160 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 260 [2020-11-07 06:20:43,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:20:43,190 INFO L225 Difference]: With dead ends: 6848 [2020-11-07 06:20:43,190 INFO L226 Difference]: Without dead ends: 4096 [2020-11-07 06:20:43,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2020-11-07 06:20:43,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4096 states. [2020-11-07 06:20:43,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4096 to 3502. [2020-11-07 06:20:43,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3502 states. [2020-11-07 06:20:43,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3502 states to 3502 states and 4303 transitions. [2020-11-07 06:20:43,943 INFO L78 Accepts]: Start accepts. Automaton has 3502 states and 4303 transitions. Word has length 260 [2020-11-07 06:20:43,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:20:43,944 INFO L481 AbstractCegarLoop]: Abstraction has 3502 states and 4303 transitions. [2020-11-07 06:20:43,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 06:20:43,944 INFO L276 IsEmpty]: Start isEmpty. Operand 3502 states and 4303 transitions. [2020-11-07 06:20:43,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-11-07 06:20:43,953 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:20:43,954 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:20:43,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 06:20:43,955 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:20:43,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:20:43,955 INFO L82 PathProgramCache]: Analyzing trace with hash -962322565, now seen corresponding path program 1 times [2020-11-07 06:20:43,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:20:43,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405074286] [2020-11-07 06:20:43,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:20:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:44,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:20:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:44,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 06:20:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:44,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-11-07 06:20:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:44,370 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-07 06:20:44,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405074286] [2020-11-07 06:20:44,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:20:44,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 06:20:44,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707210128] [2020-11-07 06:20:44,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 06:20:44,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:20:44,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 06:20:44,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 06:20:44,373 INFO L87 Difference]: Start difference. First operand 3502 states and 4303 transitions. Second operand 7 states. [2020-11-07 06:20:47,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:20:47,733 INFO L93 Difference]: Finished difference Result 7481 states and 9414 transitions. [2020-11-07 06:20:47,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 06:20:47,734 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 307 [2020-11-07 06:20:47,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:20:47,760 INFO L225 Difference]: With dead ends: 7481 [2020-11-07 06:20:47,761 INFO L226 Difference]: Without dead ends: 4152 [2020-11-07 06:20:47,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-11-07 06:20:47,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4152 states. [2020-11-07 06:20:48,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4152 to 4116. [2020-11-07 06:20:48,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4116 states. [2020-11-07 06:20:48,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4116 states to 4116 states and 4878 transitions. [2020-11-07 06:20:48,418 INFO L78 Accepts]: Start accepts. Automaton has 4116 states and 4878 transitions. Word has length 307 [2020-11-07 06:20:48,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:20:48,419 INFO L481 AbstractCegarLoop]: Abstraction has 4116 states and 4878 transitions. [2020-11-07 06:20:48,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 06:20:48,419 INFO L276 IsEmpty]: Start isEmpty. Operand 4116 states and 4878 transitions. [2020-11-07 06:20:48,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-11-07 06:20:48,431 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:20:48,432 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:20:48,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 06:20:48,432 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:20:48,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:20:48,433 INFO L82 PathProgramCache]: Analyzing trace with hash 966683625, now seen corresponding path program 1 times [2020-11-07 06:20:48,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:20:48,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112955419] [2020-11-07 06:20:48,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:20:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:48,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:20:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:48,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 06:20:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:48,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-11-07 06:20:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:48,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:20:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:49,312 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 146 proven. 70 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2020-11-07 06:20:49,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112955419] [2020-11-07 06:20:49,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:20:49,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-11-07 06:20:49,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015316103] [2020-11-07 06:20:49,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-07 06:20:49,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:20:49,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-07 06:20:49,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-11-07 06:20:49,315 INFO L87 Difference]: Start difference. First operand 4116 states and 4878 transitions. Second operand 17 states. [2020-11-07 06:20:49,521 WARN L194 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-11-07 06:20:50,187 WARN L194 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2020-11-07 06:20:50,868 WARN L194 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-11-07 06:20:51,334 WARN L194 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-11-07 06:20:58,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:20:58,135 INFO L93 Difference]: Finished difference Result 11589 states and 13971 transitions. [2020-11-07 06:20:58,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-07 06:20:58,135 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 348 [2020-11-07 06:20:58,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:20:58,244 INFO L225 Difference]: With dead ends: 11589 [2020-11-07 06:20:58,244 INFO L226 Difference]: Without dead ends: 7646 [2020-11-07 06:20:58,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=236, Invalid=694, Unknown=0, NotChecked=0, Total=930 [2020-11-07 06:20:58,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7646 states. [2020-11-07 06:20:59,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7646 to 6131. [2020-11-07 06:20:59,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6131 states. [2020-11-07 06:20:59,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6131 states to 6131 states and 7328 transitions. [2020-11-07 06:20:59,474 INFO L78 Accepts]: Start accepts. Automaton has 6131 states and 7328 transitions. Word has length 348 [2020-11-07 06:20:59,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:20:59,474 INFO L481 AbstractCegarLoop]: Abstraction has 6131 states and 7328 transitions. [2020-11-07 06:20:59,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-07 06:20:59,475 INFO L276 IsEmpty]: Start isEmpty. Operand 6131 states and 7328 transitions. [2020-11-07 06:20:59,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-11-07 06:20:59,485 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:20:59,485 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:20:59,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 06:20:59,486 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:20:59,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:20:59,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1742832483, now seen corresponding path program 1 times [2020-11-07 06:20:59,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:20:59,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594685260] [2020-11-07 06:20:59,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:20:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:59,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:20:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:59,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 06:20:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:20:59,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-11-07 06:20:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:21:00,107 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-11-07 06:21:00,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594685260] [2020-11-07 06:21:00,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:21:00,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 06:21:00,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17701250] [2020-11-07 06:21:00,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 06:21:00,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:21:00,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 06:21:00,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-07 06:21:00,110 INFO L87 Difference]: Start difference. First operand 6131 states and 7328 transitions. Second operand 10 states. [2020-11-07 06:21:03,998 WARN L194 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-11-07 06:21:08,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:21:08,309 INFO L93 Difference]: Finished difference Result 13550 states and 16482 transitions. [2020-11-07 06:21:08,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 06:21:08,315 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 360 [2020-11-07 06:21:08,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:21:08,359 INFO L225 Difference]: With dead ends: 13550 [2020-11-07 06:21:08,359 INFO L226 Difference]: Without dead ends: 7552 [2020-11-07 06:21:08,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=127, Invalid=253, Unknown=0, NotChecked=0, Total=380 [2020-11-07 06:21:08,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7552 states. [2020-11-07 06:21:10,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7552 to 6450. [2020-11-07 06:21:10,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6450 states. [2020-11-07 06:21:10,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6450 states to 6450 states and 7482 transitions. [2020-11-07 06:21:10,019 INFO L78 Accepts]: Start accepts. Automaton has 6450 states and 7482 transitions. Word has length 360 [2020-11-07 06:21:10,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:21:10,019 INFO L481 AbstractCegarLoop]: Abstraction has 6450 states and 7482 transitions. [2020-11-07 06:21:10,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 06:21:10,020 INFO L276 IsEmpty]: Start isEmpty. Operand 6450 states and 7482 transitions. [2020-11-07 06:21:10,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-11-07 06:21:10,032 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:21:10,033 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:21:10,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-07 06:21:10,033 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:21:10,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:21:10,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1817276868, now seen corresponding path program 1 times [2020-11-07 06:21:10,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:21:10,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588177541] [2020-11-07 06:21:10,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:21:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:21:10,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:21:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:21:10,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 06:21:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:21:10,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-11-07 06:21:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:21:10,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:21:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:21:10,461 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-11-07 06:21:10,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588177541] [2020-11-07 06:21:10,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:21:10,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 06:21:10,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103287832] [2020-11-07 06:21:10,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 06:21:10,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:21:10,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 06:21:10,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 06:21:10,465 INFO L87 Difference]: Start difference. First operand 6450 states and 7482 transitions. Second operand 7 states. [2020-11-07 06:21:15,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:21:15,025 INFO L93 Difference]: Finished difference Result 12121 states and 14134 transitions. [2020-11-07 06:21:15,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 06:21:15,033 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 402 [2020-11-07 06:21:15,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:21:15,077 INFO L225 Difference]: With dead ends: 12121 [2020-11-07 06:21:15,078 INFO L226 Difference]: Without dead ends: 6631 [2020-11-07 06:21:15,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-11-07 06:21:15,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6631 states. [2020-11-07 06:21:16,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6631 to 6461. [2020-11-07 06:21:16,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6461 states. [2020-11-07 06:21:16,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6461 states to 6461 states and 7239 transitions. [2020-11-07 06:21:16,491 INFO L78 Accepts]: Start accepts. Automaton has 6461 states and 7239 transitions. Word has length 402 [2020-11-07 06:21:16,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:21:16,492 INFO L481 AbstractCegarLoop]: Abstraction has 6461 states and 7239 transitions. [2020-11-07 06:21:16,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 06:21:16,492 INFO L276 IsEmpty]: Start isEmpty. Operand 6461 states and 7239 transitions. [2020-11-07 06:21:16,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-11-07 06:21:16,504 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:21:16,505 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:21:16,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-07 06:21:16,505 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:21:16,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:21:16,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1947850273, now seen corresponding path program 1 times [2020-11-07 06:21:16,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:21:16,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107654489] [2020-11-07 06:21:16,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:21:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:21:16,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:21:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:21:16,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 06:21:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:21:16,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-11-07 06:21:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:21:16,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-11-07 06:21:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:21:17,082 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 344 proven. 16 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-11-07 06:21:17,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107654489] [2020-11-07 06:21:17,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:21:17,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 06:21:17,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433532783] [2020-11-07 06:21:17,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 06:21:17,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:21:17,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 06:21:17,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-07 06:21:17,086 INFO L87 Difference]: Start difference. First operand 6461 states and 7239 transitions. Second operand 10 states. [2020-11-07 06:21:17,630 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-11-07 06:21:23,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:21:23,460 INFO L93 Difference]: Finished difference Result 14523 states and 16307 transitions. [2020-11-07 06:21:23,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-07 06:21:23,462 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 411 [2020-11-07 06:21:23,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:21:23,495 INFO L225 Difference]: With dead ends: 14523 [2020-11-07 06:21:23,495 INFO L226 Difference]: Without dead ends: 6639 [2020-11-07 06:21:23,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-11-07 06:21:23,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2020-11-07 06:21:24,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 5587. [2020-11-07 06:21:24,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5587 states. [2020-11-07 06:21:24,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5587 states to 5587 states and 6025 transitions. [2020-11-07 06:21:24,837 INFO L78 Accepts]: Start accepts. Automaton has 5587 states and 6025 transitions. Word has length 411 [2020-11-07 06:21:24,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:21:24,838 INFO L481 AbstractCegarLoop]: Abstraction has 5587 states and 6025 transitions. [2020-11-07 06:21:24,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 06:21:24,838 INFO L276 IsEmpty]: Start isEmpty. Operand 5587 states and 6025 transitions. [2020-11-07 06:21:24,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-11-07 06:21:24,849 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:21:24,849 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:21:24,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-07 06:21:24,850 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:21:24,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:21:24,850 INFO L82 PathProgramCache]: Analyzing trace with hash 759688640, now seen corresponding path program 1 times [2020-11-07 06:21:24,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:21:24,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880538916] [2020-11-07 06:21:24,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:21:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:21:25,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:21:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:21:25,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 06:21:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:21:25,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-11-07 06:21:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:21:25,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-11-07 06:21:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:21:25,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-11-07 06:21:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:21:25,564 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 525 proven. 42 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-11-07 06:21:25,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880538916] [2020-11-07 06:21:25,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:21:25,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-11-07 06:21:25,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947641550] [2020-11-07 06:21:25,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-07 06:21:25,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:21:25,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-07 06:21:25,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-11-07 06:21:25,567 INFO L87 Difference]: Start difference. First operand 5587 states and 6025 transitions. Second operand 15 states. [2020-11-07 06:21:33,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:21:33,062 INFO L93 Difference]: Finished difference Result 12567 states and 13623 transitions. [2020-11-07 06:21:33,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-07 06:21:33,063 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 431 [2020-11-07 06:21:33,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:21:33,103 INFO L225 Difference]: With dead ends: 12567 [2020-11-07 06:21:33,103 INFO L226 Difference]: Without dead ends: 7779 [2020-11-07 06:21:33,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2020-11-07 06:21:33,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7779 states. [2020-11-07 06:21:34,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7779 to 6520. [2020-11-07 06:21:34,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6520 states. [2020-11-07 06:21:34,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6520 states to 6520 states and 7053 transitions. [2020-11-07 06:21:34,471 INFO L78 Accepts]: Start accepts. Automaton has 6520 states and 7053 transitions. Word has length 431 [2020-11-07 06:21:34,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:21:34,472 INFO L481 AbstractCegarLoop]: Abstraction has 6520 states and 7053 transitions. [2020-11-07 06:21:34,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-07 06:21:34,472 INFO L276 IsEmpty]: Start isEmpty. Operand 6520 states and 7053 transitions. [2020-11-07 06:21:34,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2020-11-07 06:21:34,485 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:21:34,485 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:21:34,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-07 06:21:34,486 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:21:34,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:21:34,486 INFO L82 PathProgramCache]: Analyzing trace with hash -890341699, now seen corresponding path program 1 times [2020-11-07 06:21:34,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:21:34,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902239576] [2020-11-07 06:21:34,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:21:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:21:34,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:21:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:21:34,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 06:21:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:21:34,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-11-07 06:21:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:21:35,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:21:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:21:35,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2020-11-07 06:21:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:21:35,692 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 458 proven. 253 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-11-07 06:21:35,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902239576] [2020-11-07 06:21:35,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:21:35,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-11-07 06:21:35,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922844116] [2020-11-07 06:21:35,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-07 06:21:35,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:21:35,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-07 06:21:35,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2020-11-07 06:21:35,695 INFO L87 Difference]: Start difference. First operand 6520 states and 7053 transitions. Second operand 21 states. [2020-11-07 06:21:36,493 WARN L194 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2020-11-07 06:21:36,694 WARN L194 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-11-07 06:21:37,606 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-11-07 06:21:41,563 WARN L194 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-11-07 06:21:48,674 WARN L194 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-11-07 06:21:50,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:21:50,026 INFO L93 Difference]: Finished difference Result 15924 states and 17339 transitions. [2020-11-07 06:21:50,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-11-07 06:21:50,028 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 535 [2020-11-07 06:21:50,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:21:50,039 INFO L225 Difference]: With dead ends: 15924 [2020-11-07 06:21:50,039 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 06:21:50,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1656 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=939, Invalid=4173, Unknown=0, NotChecked=0, Total=5112 [2020-11-07 06:21:50,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 06:21:50,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 06:21:50,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 06:21:50,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 06:21:50,064 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 535 [2020-11-07 06:21:50,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:21:50,065 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 06:21:50,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-11-07 06:21:50,065 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 06:21:50,065 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 06:21:50,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-07 06:21:50,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 06:21:53,737 WARN L194 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2020-11-07 06:21:54,142 WARN L194 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-11-07 06:22:38,522 WARN L194 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 274 [2020-11-07 06:22:55,876 WARN L194 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 274 [2020-11-07 06:23:11,497 WARN L194 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 274 [2020-11-07 06:23:11,916 WARN L194 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 274 [2020-11-07 06:23:12,314 WARN L194 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 274 [2020-11-07 06:23:33,282 WARN L194 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 274 [2020-11-07 06:23:43,984 WARN L194 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 358 DAG size of output: 274 [2020-11-07 06:23:45,404 WARN L194 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 358 DAG size of output: 274 [2020-11-07 06:23:46,798 WARN L194 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 358 DAG size of output: 274 [2020-11-07 06:23:47,358 WARN L194 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 274 [2020-11-07 06:24:17,480 WARN L194 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 163 [2020-11-07 06:24:17,649 WARN L194 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 165 [2020-11-07 06:24:18,086 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 163 [2020-11-07 06:24:18,663 WARN L194 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 189 [2020-11-07 06:24:19,316 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 169 [2020-11-07 06:24:19,961 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 169 [2020-11-07 06:24:20,205 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 164 [2020-11-07 06:24:21,033 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 164 [2020-11-07 06:24:21,139 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 165 [2020-11-07 06:24:21,598 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 172 [2020-11-07 06:24:22,458 WARN L194 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 163 [2020-11-07 06:24:22,616 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 165 [2020-11-07 06:24:22,945 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 179 [2020-11-07 06:24:23,064 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 163 [2020-11-07 06:24:23,646 WARN L194 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 189 [2020-11-07 06:24:24,299 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 169 [2020-11-07 06:24:24,936 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 169 [2020-11-07 06:24:25,189 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 164 [2020-11-07 06:24:26,008 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 164 [2020-11-07 06:24:26,114 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 165 [2020-11-07 06:24:26,572 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 172 [2020-11-07 06:25:39,526 WARN L194 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 272 DAG size of output: 79 [2020-11-07 06:25:41,611 WARN L194 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 281 DAG size of output: 88 [2020-11-07 06:25:43,657 WARN L194 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 315 DAG size of output: 79 [2020-11-07 06:25:45,563 WARN L194 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 272 DAG size of output: 78 [2020-11-07 06:25:47,677 WARN L194 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 314 DAG size of output: 79 [2020-11-07 06:25:49,719 WARN L194 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 319 DAG size of output: 80 [2020-11-07 06:25:51,936 WARN L194 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 287 DAG size of output: 93 [2020-11-07 06:25:53,897 WARN L194 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 309 DAG size of output: 84 [2020-11-07 06:25:56,129 WARN L194 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 322 DAG size of output: 80 [2020-11-07 06:25:58,784 WARN L194 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 315 DAG size of output: 84 [2020-11-07 06:26:03,559 WARN L194 SmtUtils]: Spent 4.76 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:26:08,338 WARN L194 SmtUtils]: Spent 4.76 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:26:10,225 WARN L194 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 285 DAG size of output: 84 [2020-11-07 06:26:12,320 WARN L194 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 285 DAG size of output: 90 [2020-11-07 06:26:14,324 WARN L194 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 279 DAG size of output: 91 [2020-11-07 06:26:16,253 WARN L194 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 288 DAG size of output: 80 [2020-11-07 06:26:18,181 WARN L194 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 287 DAG size of output: 83 [2020-11-07 06:26:20,164 WARN L194 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 278 DAG size of output: 80 [2020-11-07 06:26:25,018 WARN L194 SmtUtils]: Spent 4.83 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:26:26,873 WARN L194 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 276 DAG size of output: 82 [2020-11-07 06:26:29,139 WARN L194 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 287 DAG size of output: 93 [2020-11-07 06:26:31,138 WARN L194 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 277 DAG size of output: 87 [2020-11-07 06:26:36,001 WARN L194 SmtUtils]: Spent 4.84 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:26:40,871 WARN L194 SmtUtils]: Spent 4.85 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:26:45,735 WARN L194 SmtUtils]: Spent 4.85 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:26:50,604 WARN L194 SmtUtils]: Spent 4.85 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:26:53,168 WARN L194 SmtUtils]: Spent 2.55 s on a formula simplification. DAG size of input: 324 DAG size of output: 79 [2020-11-07 06:26:55,462 WARN L194 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 281 DAG size of output: 85 [2020-11-07 06:26:57,795 WARN L194 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 279 DAG size of output: 90 [2020-11-07 06:26:59,832 WARN L194 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 284 DAG size of output: 83 [2020-11-07 06:27:02,175 WARN L194 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 274 DAG size of output: 83 [2020-11-07 06:27:04,778 WARN L194 SmtUtils]: Spent 2.59 s on a formula simplification. DAG size of input: 314 DAG size of output: 79 [2020-11-07 06:27:06,586 WARN L194 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 296 DAG size of output: 76 [2020-11-07 06:27:11,485 WARN L194 SmtUtils]: Spent 4.88 s on a formula simplification. DAG size of input: 530 DAG size of output: 97 [2020-11-07 06:27:16,226 WARN L194 SmtUtils]: Spent 4.72 s on a formula simplification. DAG size of input: 530 DAG size of output: 97 [2020-11-07 06:27:21,032 WARN L194 SmtUtils]: Spent 4.79 s on a formula simplification. DAG size of input: 530 DAG size of output: 97 [2020-11-07 06:27:22,686 WARN L194 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-11-07 06:27:24,285 WARN L194 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-11-07 06:27:25,852 WARN L194 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-11-07 06:27:30,588 WARN L194 SmtUtils]: Spent 4.72 s on a formula simplification. DAG size of input: 530 DAG size of output: 97 [2020-11-07 06:27:32,149 WARN L194 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-11-07 06:27:33,708 WARN L194 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-11-07 06:27:38,307 WARN L194 SmtUtils]: Spent 4.58 s on a formula simplification. DAG size of input: 533 DAG size of output: 92 [2020-11-07 06:27:39,944 WARN L194 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-11-07 06:27:44,560 WARN L194 SmtUtils]: Spent 4.60 s on a formula simplification. DAG size of input: 533 DAG size of output: 95 [2020-11-07 06:27:46,363 WARN L194 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 296 DAG size of output: 76 [2020-11-07 06:27:51,038 WARN L194 SmtUtils]: Spent 4.65 s on a formula simplification. DAG size of input: 530 DAG size of output: 97 [2020-11-07 06:27:55,961 WARN L194 SmtUtils]: Spent 4.87 s on a formula simplification. DAG size of input: 530 DAG size of output: 97 [2020-11-07 06:28:00,891 WARN L194 SmtUtils]: Spent 4.91 s on a formula simplification. DAG size of input: 530 DAG size of output: 97 [2020-11-07 06:28:02,548 WARN L194 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-11-07 06:28:04,204 WARN L194 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-11-07 06:28:05,817 WARN L194 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-11-07 06:28:10,706 WARN L194 SmtUtils]: Spent 4.87 s on a formula simplification. DAG size of input: 530 DAG size of output: 97 [2020-11-07 06:28:15,411 WARN L194 SmtUtils]: Spent 4.69 s on a formula simplification. DAG size of input: 533 DAG size of output: 92 [2020-11-07 06:28:18,020 WARN L194 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 284 DAG size of output: 89 [2020-11-07 06:28:20,760 WARN L194 SmtUtils]: Spent 2.72 s on a formula simplification. DAG size of input: 348 DAG size of output: 87 [2020-11-07 06:28:23,020 WARN L194 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 281 DAG size of output: 88 [2020-11-07 06:28:25,067 WARN L194 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 288 DAG size of output: 82 [2020-11-07 06:28:27,282 WARN L194 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 277 DAG size of output: 83 [2020-11-07 06:28:29,339 WARN L194 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 277 DAG size of output: 87 [2020-11-07 06:28:31,302 WARN L194 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 271 DAG size of output: 78 [2020-11-07 06:28:33,620 WARN L194 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 284 DAG size of output: 88 [2020-11-07 06:28:35,500 WARN L194 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 281 DAG size of output: 81 [2020-11-07 06:28:38,041 WARN L194 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 324 DAG size of output: 86 [2020-11-07 06:28:40,166 WARN L194 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 273 DAG size of output: 77 [2020-11-07 06:28:42,346 WARN L194 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 279 DAG size of output: 91 [2020-11-07 06:28:47,485 WARN L194 SmtUtils]: Spent 5.12 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:28:52,631 WARN L194 SmtUtils]: Spent 5.13 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:28:55,184 WARN L194 SmtUtils]: Spent 2.54 s on a formula simplification. DAG size of input: 318 DAG size of output: 80 [2020-11-07 06:28:57,398 WARN L194 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 281 DAG size of output: 88 [2020-11-07 06:29:02,463 WARN L194 SmtUtils]: Spent 5.05 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:29:04,516 WARN L194 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 316 DAG size of output: 79 [2020-11-07 06:29:09,511 WARN L194 SmtUtils]: Spent 4.97 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:29:11,865 WARN L194 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 322 DAG size of output: 80 [2020-11-07 06:29:16,876 WARN L194 SmtUtils]: Spent 4.99 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:29:19,106 WARN L194 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 322 DAG size of output: 85 [2020-11-07 06:29:21,553 WARN L194 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 280 DAG size of output: 92 [2020-11-07 06:29:24,118 WARN L194 SmtUtils]: Spent 2.55 s on a formula simplification. DAG size of input: 359 DAG size of output: 90 [2020-11-07 06:29:25,770 WARN L194 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 273 DAG size of output: 76 [2020-11-07 06:29:27,728 WARN L194 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 282 DAG size of output: 79 [2020-11-07 06:29:29,728 WARN L194 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 272 DAG size of output: 79 [2020-11-07 06:29:31,878 WARN L194 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 277 DAG size of output: 83 [2020-11-07 06:29:33,882 WARN L194 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 276 DAG size of output: 87 [2020-11-07 06:29:35,802 WARN L194 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 271 DAG size of output: 80 [2020-11-07 06:29:38,048 WARN L194 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 280 DAG size of output: 89 [2020-11-07 06:29:39,904 WARN L194 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 276 DAG size of output: 83 [2020-11-07 06:29:41,950 WARN L194 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 272 DAG size of output: 85 [2020-11-07 06:29:43,840 WARN L194 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 270 DAG size of output: 78 [2020-11-07 06:29:45,440 WARN L194 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-11-07 06:29:47,041 WARN L194 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-11-07 06:29:49,633 WARN L194 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 335 DAG size of output: 87 [2020-11-07 06:29:52,088 WARN L194 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 314 DAG size of output: 79 [2020-11-07 06:29:57,142 WARN L194 SmtUtils]: Spent 5.03 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:29:59,279 WARN L194 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 279 DAG size of output: 81 [2020-11-07 06:30:01,680 WARN L194 SmtUtils]: Spent 2.39 s on a formula simplification. DAG size of input: 284 DAG size of output: 98 [2020-11-07 06:30:03,746 WARN L194 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 280 DAG size of output: 88 [2020-11-07 06:30:05,767 WARN L194 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 307 DAG size of output: 79 [2020-11-07 06:30:07,861 WARN L194 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 273 DAG size of output: 77 [2020-11-07 06:30:10,515 WARN L194 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 333 DAG size of output: 79 [2020-11-07 06:30:13,207 WARN L194 SmtUtils]: Spent 2.68 s on a formula simplification. DAG size of input: 279 DAG size of output: 98 [2020-11-07 06:30:18,353 WARN L194 SmtUtils]: Spent 5.13 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:30:23,476 WARN L194 SmtUtils]: Spent 5.10 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:30:25,283 WARN L194 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 253 DAG size of output: 61 [2020-11-07 06:30:30,426 WARN L194 SmtUtils]: Spent 5.12 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:30:32,522 WARN L194 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 274 DAG size of output: 81 [2020-11-07 06:30:34,155 WARN L194 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-11-07 06:30:38,981 WARN L194 SmtUtils]: Spent 4.81 s on a formula simplification. DAG size of input: 530 DAG size of output: 97 [2020-11-07 06:30:44,148 WARN L194 SmtUtils]: Spent 5.15 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:30:46,104 WARN L194 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 305 DAG size of output: 83 [2020-11-07 06:30:51,310 WARN L194 SmtUtils]: Spent 5.19 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:30:56,459 WARN L194 SmtUtils]: Spent 5.13 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:30:58,684 WARN L194 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 319 DAG size of output: 80 [2020-11-07 06:31:00,907 WARN L194 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 287 DAG size of output: 81 [2020-11-07 06:31:03,578 WARN L194 SmtUtils]: Spent 2.66 s on a formula simplification. DAG size of input: 280 DAG size of output: 89 [2020-11-07 06:31:05,562 WARN L194 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 275 DAG size of output: 82 [2020-11-07 06:31:07,579 WARN L194 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 275 DAG size of output: 83 [2020-11-07 06:31:09,943 WARN L194 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 322 DAG size of output: 82 [2020-11-07 06:31:11,590 WARN L194 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-11-07 06:31:16,494 WARN L194 SmtUtils]: Spent 4.89 s on a formula simplification. DAG size of input: 530 DAG size of output: 97 [2020-11-07 06:31:21,324 WARN L194 SmtUtils]: Spent 4.81 s on a formula simplification. DAG size of input: 533 DAG size of output: 92 [2020-11-07 06:31:26,247 WARN L194 SmtUtils]: Spent 4.91 s on a formula simplification. DAG size of input: 530 DAG size of output: 97 [2020-11-07 06:31:28,055 WARN L194 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 296 DAG size of output: 76 [2020-11-07 06:31:29,712 WARN L194 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-11-07 06:31:31,389 WARN L194 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-11-07 06:31:36,367 WARN L194 SmtUtils]: Spent 4.96 s on a formula simplification. DAG size of input: 530 DAG size of output: 97 [2020-11-07 06:31:39,410 WARN L194 SmtUtils]: Spent 3.03 s on a formula simplification. DAG size of input: 363 DAG size of output: 88 [2020-11-07 06:31:44,743 WARN L194 SmtUtils]: Spent 5.31 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:31:46,815 WARN L194 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 274 DAG size of output: 81 [2020-11-07 06:31:49,370 WARN L194 SmtUtils]: Spent 2.54 s on a formula simplification. DAG size of input: 272 DAG size of output: 87 [2020-11-07 06:31:54,700 WARN L194 SmtUtils]: Spent 5.31 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:32:00,040 WARN L194 SmtUtils]: Spent 5.32 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:32:01,952 WARN L194 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 253 DAG size of output: 61 [2020-11-07 06:32:04,037 WARN L194 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 284 DAG size of output: 81 [2020-11-07 06:32:06,667 WARN L194 SmtUtils]: Spent 2.61 s on a formula simplification. DAG size of input: 283 DAG size of output: 95 [2020-11-07 06:32:09,187 WARN L194 SmtUtils]: Spent 2.50 s on a formula simplification. DAG size of input: 321 DAG size of output: 81 [2020-11-07 06:32:14,572 WARN L194 SmtUtils]: Spent 5.37 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:32:16,824 WARN L194 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 277 DAG size of output: 84 [2020-11-07 06:32:19,120 WARN L194 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 278 DAG size of output: 92 [2020-11-07 06:32:21,331 WARN L194 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 280 DAG size of output: 81 [2020-11-07 06:32:26,717 WARN L194 SmtUtils]: Spent 5.37 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:32:32,177 WARN L194 SmtUtils]: Spent 5.44 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:32:34,873 WARN L194 SmtUtils]: Spent 2.68 s on a formula simplification. DAG size of input: 279 DAG size of output: 88 [2020-11-07 06:32:40,380 WARN L194 SmtUtils]: Spent 5.49 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:32:45,857 WARN L194 SmtUtils]: Spent 5.46 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:32:48,057 WARN L194 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 274 DAG size of output: 87 [2020-11-07 06:32:50,421 WARN L194 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 290 DAG size of output: 84 [2020-11-07 06:32:52,629 WARN L194 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 280 DAG size of output: 83 [2020-11-07 06:32:55,301 WARN L194 SmtUtils]: Spent 2.66 s on a formula simplification. DAG size of input: 327 DAG size of output: 82 [2020-11-07 06:32:57,760 WARN L194 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 316 DAG size of output: 86 [2020-11-07 06:32:59,913 WARN L194 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 277 DAG size of output: 80 [2020-11-07 06:33:02,514 WARN L194 SmtUtils]: Spent 2.59 s on a formula simplification. DAG size of input: 291 DAG size of output: 91 [2020-11-07 06:33:08,067 WARN L194 SmtUtils]: Spent 5.54 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:33:10,764 WARN L194 SmtUtils]: Spent 2.68 s on a formula simplification. DAG size of input: 314 DAG size of output: 79 [2020-11-07 06:33:12,921 WARN L194 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 279 DAG size of output: 81 [2020-11-07 06:33:18,528 WARN L194 SmtUtils]: Spent 5.59 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:33:24,139 WARN L194 SmtUtils]: Spent 5.59 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-11-07 06:33:26,456 WARN L194 SmtUtils]: Spent 2.30 s on a formula simplification. DAG size of input: 278 DAG size of output: 86 [2020-11-07 06:33:32,097 WARN L194 SmtUtils]: Spent 5.62 s on a formula simplification. DAG size of input: 516 DAG size of output: 104