/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 01:29:07,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 01:29:07,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 01:29:08,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 01:29:08,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 01:29:08,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 01:29:08,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 01:29:08,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 01:29:08,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 01:29:08,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 01:29:08,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 01:29:08,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 01:29:08,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 01:29:08,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 01:29:08,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 01:29:08,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 01:29:08,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 01:29:08,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 01:29:08,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 01:29:08,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 01:29:08,133 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 01:29:08,156 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 01:29:08,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 01:29:08,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 01:29:08,162 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 01:29:08,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 01:29:08,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 01:29:08,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 01:29:08,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 01:29:08,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 01:29:08,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 01:29:08,164 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 01:29:08,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 01:29:08,164 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 01:29:08,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 01:29:08,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 01:29:08,165 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 01:29:08,165 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 01:29:08,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 01:29:08,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 01:29:08,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 01:29:08,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 01:29:08,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 01:29:08,166 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 01:29:08,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 01:29:08,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 01:29:08,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 01:29:08,632 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 01:29:08,633 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 01:29:08,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label05.c [2020-10-24 01:29:08,702 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0aa30e6c/c13694c64be240749781df3a034fd690/FLAG347ccd3b2 [2020-10-24 01:29:09,416 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 01:29:09,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label05.c [2020-10-24 01:29:09,439 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0aa30e6c/c13694c64be240749781df3a034fd690/FLAG347ccd3b2 [2020-10-24 01:29:09,685 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0aa30e6c/c13694c64be240749781df3a034fd690 [2020-10-24 01:29:09,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 01:29:09,697 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 01:29:09,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 01:29:09,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 01:29:09,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 01:29:09,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:29:09" (1/1) ... [2020-10-24 01:29:09,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9039352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:29:09, skipping insertion in model container [2020-10-24 01:29:09,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:29:09" (1/1) ... [2020-10-24 01:29:09,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 01:29:09,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 01:29:10,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:29:10,211 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 01:29:10,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:29:10,416 INFO L208 MainTranslator]: Completed translation [2020-10-24 01:29:10,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:29:10 WrapperNode [2020-10-24 01:29:10,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 01:29:10,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 01:29:10,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 01:29:10,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 01:29:10,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:29:10" (1/1) ... [2020-10-24 01:29:10,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:29:10" (1/1) ... [2020-10-24 01:29:10,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:29:10" (1/1) ... [2020-10-24 01:29:10,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:29:10" (1/1) ... [2020-10-24 01:29:10,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:29:10" (1/1) ... [2020-10-24 01:29:10,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:29:10" (1/1) ... [2020-10-24 01:29:10,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:29:10" (1/1) ... [2020-10-24 01:29:10,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 01:29:10,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 01:29:10,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 01:29:10,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 01:29:10,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:29:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 01:29:10,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 01:29:10,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 01:29:10,672 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 01:29:10,672 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-24 01:29:10,673 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 01:29:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-24 01:29:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 01:29:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 01:29:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 01:29:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 01:29:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 01:29:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-24 01:29:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 01:29:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 01:29:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 01:29:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 01:29:10,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 01:29:10,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 01:29:10,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 01:29:12,278 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 01:29:12,279 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-24 01:29:12,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:29:12 BoogieIcfgContainer [2020-10-24 01:29:12,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 01:29:12,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 01:29:12,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 01:29:12,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 01:29:12,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:29:09" (1/3) ... [2020-10-24 01:29:12,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@382f9eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:29:12, skipping insertion in model container [2020-10-24 01:29:12,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:29:10" (2/3) ... [2020-10-24 01:29:12,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@382f9eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:29:12, skipping insertion in model container [2020-10-24 01:29:12,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:29:12" (3/3) ... [2020-10-24 01:29:12,291 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label05.c [2020-10-24 01:29:12,303 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 01:29:12,308 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 01:29:12,322 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 01:29:12,347 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 01:29:12,347 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 01:29:12,348 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 01:29:12,348 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 01:29:12,348 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 01:29:12,348 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 01:29:12,348 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 01:29:12,348 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 01:29:12,374 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states. [2020-10-24 01:29:12,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-24 01:29:12,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:29:12,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:29:12,402 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:29:12,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:29:12,409 INFO L82 PathProgramCache]: Analyzing trace with hash -417910909, now seen corresponding path program 1 times [2020-10-24 01:29:12,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:29:12,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551249030] [2020-10-24 01:29:12,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:29:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:29:13,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:29:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:29:13,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:29:13,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551249030] [2020-10-24 01:29:13,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:29:13,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 01:29:13,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271651553] [2020-10-24 01:29:13,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 01:29:13,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:29:13,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 01:29:13,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 01:29:13,234 INFO L87 Difference]: Start difference. First operand 539 states. Second operand 4 states. [2020-10-24 01:29:13,448 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-24 01:29:16,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:29:16,502 INFO L93 Difference]: Finished difference Result 1409 states and 1864 transitions. [2020-10-24 01:29:16,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-24 01:29:16,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2020-10-24 01:29:16,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:29:16,531 INFO L225 Difference]: With dead ends: 1409 [2020-10-24 01:29:16,531 INFO L226 Difference]: Without dead ends: 797 [2020-10-24 01:29:16,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 01:29:16,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2020-10-24 01:29:16,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 674. [2020-10-24 01:29:16,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2020-10-24 01:29:16,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 822 transitions. [2020-10-24 01:29:16,775 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 822 transitions. Word has length 161 [2020-10-24 01:29:16,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:29:16,777 INFO L481 AbstractCegarLoop]: Abstraction has 674 states and 822 transitions. [2020-10-24 01:29:16,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 01:29:16,777 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 822 transitions. [2020-10-24 01:29:16,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-24 01:29:16,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:29:16,787 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:29:16,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 01:29:16,787 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:29:16,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:29:16,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1011658963, now seen corresponding path program 1 times [2020-10-24 01:29:16,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:29:16,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469732323] [2020-10-24 01:29:16,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:29:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:29:17,112 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-24 01:29:17,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:29:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:29:17,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 01:29:17,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:29:17,342 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:29:17,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469732323] [2020-10-24 01:29:17,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:29:17,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-24 01:29:17,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116979707] [2020-10-24 01:29:17,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 01:29:17,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:29:17,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 01:29:17,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-24 01:29:17,353 INFO L87 Difference]: Start difference. First operand 674 states and 822 transitions. Second operand 10 states. [2020-10-24 01:29:17,584 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-24 01:29:17,883 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-24 01:29:18,133 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-10-24 01:29:18,776 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-24 01:29:24,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:29:24,500 INFO L93 Difference]: Finished difference Result 2156 states and 2731 transitions. [2020-10-24 01:29:24,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-24 01:29:24,505 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 179 [2020-10-24 01:29:24,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:29:24,521 INFO L225 Difference]: With dead ends: 2156 [2020-10-24 01:29:24,522 INFO L226 Difference]: Without dead ends: 1512 [2020-10-24 01:29:24,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=216, Invalid=714, Unknown=0, NotChecked=0, Total=930 [2020-10-24 01:29:24,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2020-10-24 01:29:24,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1217. [2020-10-24 01:29:24,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1217 states. [2020-10-24 01:29:24,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1474 transitions. [2020-10-24 01:29:24,795 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1474 transitions. Word has length 179 [2020-10-24 01:29:24,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:29:24,796 INFO L481 AbstractCegarLoop]: Abstraction has 1217 states and 1474 transitions. [2020-10-24 01:29:24,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 01:29:24,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1474 transitions. [2020-10-24 01:29:24,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-24 01:29:24,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:29:24,807 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:29:24,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 01:29:24,807 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:29:24,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:29:24,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1041684603, now seen corresponding path program 1 times [2020-10-24 01:29:24,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:29:24,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294526915] [2020-10-24 01:29:24,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:29:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:29:25,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:29:25,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:29:25,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 01:29:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:29:25,184 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:29:25,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294526915] [2020-10-24 01:29:25,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:29:25,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 01:29:25,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970421646] [2020-10-24 01:29:25,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:29:25,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:29:25,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:29:25,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:29:25,187 INFO L87 Difference]: Start difference. First operand 1217 states and 1474 transitions. Second operand 7 states. [2020-10-24 01:29:25,560 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-10-24 01:29:30,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:29:30,370 INFO L93 Difference]: Finished difference Result 2854 states and 3550 transitions. [2020-10-24 01:29:30,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-24 01:29:30,371 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 183 [2020-10-24 01:29:30,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:29:30,383 INFO L225 Difference]: With dead ends: 2854 [2020-10-24 01:29:30,383 INFO L226 Difference]: Without dead ends: 1667 [2020-10-24 01:29:30,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-10-24 01:29:30,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2020-10-24 01:29:30,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1515. [2020-10-24 01:29:30,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1515 states. [2020-10-24 01:29:30,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 1897 transitions. [2020-10-24 01:29:30,662 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 1897 transitions. Word has length 183 [2020-10-24 01:29:30,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:29:30,663 INFO L481 AbstractCegarLoop]: Abstraction has 1515 states and 1897 transitions. [2020-10-24 01:29:30,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:29:30,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 1897 transitions. [2020-10-24 01:29:30,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-24 01:29:30,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:29:30,671 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:29:30,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 01:29:30,671 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:29:30,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:29:30,672 INFO L82 PathProgramCache]: Analyzing trace with hash 648403544, now seen corresponding path program 1 times [2020-10-24 01:29:30,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:29:30,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510460693] [2020-10-24 01:29:30,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:29:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:29:30,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:29:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:29:30,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 01:29:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:29:30,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-24 01:29:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:29:31,019 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-24 01:29:31,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510460693] [2020-10-24 01:29:31,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:29:31,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-24 01:29:31,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575460757] [2020-10-24 01:29:31,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-24 01:29:31,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:29:31,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-24 01:29:31,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-24 01:29:31,022 INFO L87 Difference]: Start difference. First operand 1515 states and 1897 transitions. Second operand 12 states. [2020-10-24 01:29:31,355 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2020-10-24 01:29:31,859 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2020-10-24 01:29:32,192 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-10-24 01:29:33,043 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-10-24 01:29:33,350 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2020-10-24 01:29:34,806 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-10-24 01:29:36,132 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-10-24 01:29:36,757 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-24 01:29:39,280 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2020-10-24 01:29:44,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:29:44,297 INFO L93 Difference]: Finished difference Result 5738 states and 7696 transitions. [2020-10-24 01:29:44,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-24 01:29:44,298 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 196 [2020-10-24 01:29:44,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:29:44,334 INFO L225 Difference]: With dead ends: 5738 [2020-10-24 01:29:44,335 INFO L226 Difference]: Without dead ends: 4253 [2020-10-24 01:29:44,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=610, Invalid=2582, Unknown=0, NotChecked=0, Total=3192 [2020-10-24 01:29:44,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4253 states. [2020-10-24 01:29:45,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4253 to 3574. [2020-10-24 01:29:45,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3574 states. [2020-10-24 01:29:45,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 4505 transitions. [2020-10-24 01:29:45,094 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 4505 transitions. Word has length 196 [2020-10-24 01:29:45,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:29:45,094 INFO L481 AbstractCegarLoop]: Abstraction has 3574 states and 4505 transitions. [2020-10-24 01:29:45,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-24 01:29:45,095 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 4505 transitions. [2020-10-24 01:29:45,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-24 01:29:45,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:29:45,110 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:29:45,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 01:29:45,111 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:29:45,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:29:45,111 INFO L82 PathProgramCache]: Analyzing trace with hash -486613281, now seen corresponding path program 1 times [2020-10-24 01:29:45,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:29:45,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724888048] [2020-10-24 01:29:45,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:29:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:29:45,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:29:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:29:45,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 01:29:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:29:45,361 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:29:45,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724888048] [2020-10-24 01:29:45,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:29:45,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-24 01:29:45,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400478284] [2020-10-24 01:29:45,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:29:45,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:29:45,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:29:45,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:29:45,364 INFO L87 Difference]: Start difference. First operand 3574 states and 4505 transitions. Second operand 7 states. [2020-10-24 01:29:45,553 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-24 01:29:48,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:29:48,844 INFO L93 Difference]: Finished difference Result 9305 states and 12483 transitions. [2020-10-24 01:29:48,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-24 01:29:48,845 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 199 [2020-10-24 01:29:48,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:29:48,897 INFO L225 Difference]: With dead ends: 9305 [2020-10-24 01:29:48,897 INFO L226 Difference]: Without dead ends: 5761 [2020-10-24 01:29:48,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-24 01:29:48,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5761 states. [2020-10-24 01:29:49,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5761 to 5419. [2020-10-24 01:29:49,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5419 states. [2020-10-24 01:29:49,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5419 states to 5419 states and 6779 transitions. [2020-10-24 01:29:49,856 INFO L78 Accepts]: Start accepts. Automaton has 5419 states and 6779 transitions. Word has length 199 [2020-10-24 01:29:49,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:29:49,857 INFO L481 AbstractCegarLoop]: Abstraction has 5419 states and 6779 transitions. [2020-10-24 01:29:49,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:29:49,857 INFO L276 IsEmpty]: Start isEmpty. Operand 5419 states and 6779 transitions. [2020-10-24 01:29:49,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-24 01:29:49,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:29:49,876 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:29:49,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 01:29:49,876 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:29:49,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:29:49,877 INFO L82 PathProgramCache]: Analyzing trace with hash 249916501, now seen corresponding path program 1 times [2020-10-24 01:29:49,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:29:49,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825879392] [2020-10-24 01:29:49,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:29:49,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:29:50,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:29:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:29:50,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 01:29:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:29:50,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-24 01:29:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:29:50,243 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-24 01:29:50,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825879392] [2020-10-24 01:29:50,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:29:50,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-24 01:29:50,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608286169] [2020-10-24 01:29:50,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 01:29:50,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:29:50,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 01:29:50,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-24 01:29:50,246 INFO L87 Difference]: Start difference. First operand 5419 states and 6779 transitions. Second operand 9 states. [2020-10-24 01:29:51,172 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-10-24 01:29:52,719 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-24 01:29:56,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:29:56,246 INFO L93 Difference]: Finished difference Result 12021 states and 15263 transitions. [2020-10-24 01:29:56,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-24 01:29:56,246 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 201 [2020-10-24 01:29:56,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:29:56,294 INFO L225 Difference]: With dead ends: 12021 [2020-10-24 01:29:56,294 INFO L226 Difference]: Without dead ends: 6782 [2020-10-24 01:29:56,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2020-10-24 01:29:56,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6782 states. [2020-10-24 01:29:57,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6782 to 5978. [2020-10-24 01:29:57,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5978 states. [2020-10-24 01:29:57,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 7541 transitions. [2020-10-24 01:29:57,399 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 7541 transitions. Word has length 201 [2020-10-24 01:29:57,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:29:57,400 INFO L481 AbstractCegarLoop]: Abstraction has 5978 states and 7541 transitions. [2020-10-24 01:29:57,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 01:29:57,400 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 7541 transitions. [2020-10-24 01:29:57,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-24 01:29:57,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:29:57,420 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:29:57,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-24 01:29:57,421 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:29:57,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:29:57,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1954566493, now seen corresponding path program 1 times [2020-10-24 01:29:57,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:29:57,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928645541] [2020-10-24 01:29:57,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:29:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:29:57,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:29:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:29:57,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 01:29:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:29:57,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-24 01:29:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:29:57,903 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-24 01:29:57,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928645541] [2020-10-24 01:29:57,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:29:57,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 01:29:57,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795542162] [2020-10-24 01:29:57,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 01:29:57,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:29:57,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 01:29:57,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-24 01:29:57,906 INFO L87 Difference]: Start difference. First operand 5978 states and 7541 transitions. Second operand 10 states. [2020-10-24 01:29:59,278 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-24 01:30:01,194 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-24 01:30:05,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:30:05,292 INFO L93 Difference]: Finished difference Result 15130 states and 19280 transitions. [2020-10-24 01:30:05,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-24 01:30:05,293 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 222 [2020-10-24 01:30:05,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:30:05,350 INFO L225 Difference]: With dead ends: 15130 [2020-10-24 01:30:05,350 INFO L226 Difference]: Without dead ends: 8986 [2020-10-24 01:30:05,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2020-10-24 01:30:05,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8986 states. [2020-10-24 01:30:06,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8986 to 6274. [2020-10-24 01:30:06,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6274 states. [2020-10-24 01:30:06,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6274 states to 6274 states and 7794 transitions. [2020-10-24 01:30:06,628 INFO L78 Accepts]: Start accepts. Automaton has 6274 states and 7794 transitions. Word has length 222 [2020-10-24 01:30:06,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:30:06,629 INFO L481 AbstractCegarLoop]: Abstraction has 6274 states and 7794 transitions. [2020-10-24 01:30:06,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 01:30:06,629 INFO L276 IsEmpty]: Start isEmpty. Operand 6274 states and 7794 transitions. [2020-10-24 01:30:06,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-24 01:30:06,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:30:06,647 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:30:06,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-24 01:30:06,648 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:30:06,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:30:06,649 INFO L82 PathProgramCache]: Analyzing trace with hash -2015852022, now seen corresponding path program 1 times [2020-10-24 01:30:06,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:30:06,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646545669] [2020-10-24 01:30:06,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:30:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:06,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:30:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:06,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 01:30:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:06,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-24 01:30:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:06,903 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-24 01:30:06,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646545669] [2020-10-24 01:30:06,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:30:06,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 01:30:06,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996139385] [2020-10-24 01:30:06,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:30:06,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:30:06,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:30:06,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:30:06,906 INFO L87 Difference]: Start difference. First operand 6274 states and 7794 transitions. Second operand 8 states. [2020-10-24 01:30:10,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:30:10,025 INFO L93 Difference]: Finished difference Result 12393 states and 15457 transitions. [2020-10-24 01:30:10,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-24 01:30:10,025 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 224 [2020-10-24 01:30:10,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:30:10,055 INFO L225 Difference]: With dead ends: 12393 [2020-10-24 01:30:10,056 INFO L226 Difference]: Without dead ends: 6299 [2020-10-24 01:30:10,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-24 01:30:10,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6299 states. [2020-10-24 01:30:11,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6299 to 6274. [2020-10-24 01:30:11,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6274 states. [2020-10-24 01:30:11,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6274 states to 6274 states and 7535 transitions. [2020-10-24 01:30:11,691 INFO L78 Accepts]: Start accepts. Automaton has 6274 states and 7535 transitions. Word has length 224 [2020-10-24 01:30:11,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:30:11,691 INFO L481 AbstractCegarLoop]: Abstraction has 6274 states and 7535 transitions. [2020-10-24 01:30:11,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:30:11,692 INFO L276 IsEmpty]: Start isEmpty. Operand 6274 states and 7535 transitions. [2020-10-24 01:30:11,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-24 01:30:11,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:30:11,709 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:30:11,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-24 01:30:11,710 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:30:11,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:30:11,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1487199842, now seen corresponding path program 1 times [2020-10-24 01:30:11,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:30:11,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050603592] [2020-10-24 01:30:11,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:30:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:11,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:30:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:11,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 01:30:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:11,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-24 01:30:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:11,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-24 01:30:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:12,125 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-24 01:30:12,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050603592] [2020-10-24 01:30:12,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:30:12,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 01:30:12,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695865820] [2020-10-24 01:30:12,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:30:12,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:30:12,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:30:12,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:30:12,129 INFO L87 Difference]: Start difference. First operand 6274 states and 7535 transitions. Second operand 7 states. [2020-10-24 01:30:17,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:30:17,133 INFO L93 Difference]: Finished difference Result 16102 states and 19321 transitions. [2020-10-24 01:30:17,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-24 01:30:17,133 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 278 [2020-10-24 01:30:17,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:30:17,172 INFO L225 Difference]: With dead ends: 16102 [2020-10-24 01:30:17,172 INFO L226 Difference]: Without dead ends: 8741 [2020-10-24 01:30:17,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-24 01:30:17,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8741 states. [2020-10-24 01:30:18,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8741 to 5275. [2020-10-24 01:30:18,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5275 states. [2020-10-24 01:30:18,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5275 states to 5275 states and 6004 transitions. [2020-10-24 01:30:18,369 INFO L78 Accepts]: Start accepts. Automaton has 5275 states and 6004 transitions. Word has length 278 [2020-10-24 01:30:18,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:30:18,369 INFO L481 AbstractCegarLoop]: Abstraction has 5275 states and 6004 transitions. [2020-10-24 01:30:18,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:30:18,369 INFO L276 IsEmpty]: Start isEmpty. Operand 5275 states and 6004 transitions. [2020-10-24 01:30:18,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-24 01:30:18,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:30:18,382 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:30:18,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-24 01:30:18,382 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:30:18,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:30:18,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1586652350, now seen corresponding path program 1 times [2020-10-24 01:30:18,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:30:18,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977963161] [2020-10-24 01:30:18,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:30:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:18,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:30:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:18,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 01:30:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:18,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-24 01:30:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:19,012 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 104 proven. 16 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-24 01:30:19,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977963161] [2020-10-24 01:30:19,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:30:19,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-24 01:30:19,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070755371] [2020-10-24 01:30:19,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-24 01:30:19,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:30:19,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-24 01:30:19,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-24 01:30:19,014 INFO L87 Difference]: Start difference. First operand 5275 states and 6004 transitions. Second operand 13 states. [2020-10-24 01:30:20,602 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-24 01:30:24,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:30:24,226 INFO L93 Difference]: Finished difference Result 10622 states and 12119 transitions. [2020-10-24 01:30:24,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-24 01:30:24,227 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 288 [2020-10-24 01:30:24,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:30:24,250 INFO L225 Difference]: With dead ends: 10622 [2020-10-24 01:30:24,250 INFO L226 Difference]: Without dead ends: 5270 [2020-10-24 01:30:24,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-24 01:30:24,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5270 states. [2020-10-24 01:30:25,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5270 to 5260. [2020-10-24 01:30:25,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5260 states. [2020-10-24 01:30:25,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 5969 transitions. [2020-10-24 01:30:25,515 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 5969 transitions. Word has length 288 [2020-10-24 01:30:25,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:30:25,515 INFO L481 AbstractCegarLoop]: Abstraction has 5260 states and 5969 transitions. [2020-10-24 01:30:25,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-24 01:30:25,515 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 5969 transitions. [2020-10-24 01:30:25,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-24 01:30:25,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:30:25,526 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:30:25,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-24 01:30:25,527 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:30:25,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:30:25,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1192600396, now seen corresponding path program 1 times [2020-10-24 01:30:25,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:30:25,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626898246] [2020-10-24 01:30:25,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:30:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:25,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:30:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:25,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 01:30:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:25,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-24 01:30:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:25,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-24 01:30:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:25,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-24 01:30:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:26,067 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 173 proven. 55 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-24 01:30:26,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626898246] [2020-10-24 01:30:26,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:30:26,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-24 01:30:26,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466406286] [2020-10-24 01:30:26,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-24 01:30:26,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:30:26,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-24 01:30:26,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-24 01:30:26,071 INFO L87 Difference]: Start difference. First operand 5260 states and 5969 transitions. Second operand 13 states. [2020-10-24 01:30:26,513 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 92 [2020-10-24 01:30:26,977 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 92 [2020-10-24 01:30:28,186 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-10-24 01:30:28,736 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-24 01:30:29,471 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-24 01:30:33,682 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-10-24 01:30:34,278 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-10-24 01:30:35,711 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-10-24 01:30:40,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:30:40,574 INFO L93 Difference]: Finished difference Result 11648 states and 13283 transitions. [2020-10-24 01:30:40,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-24 01:30:40,575 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 310 [2020-10-24 01:30:40,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:30:40,599 INFO L225 Difference]: With dead ends: 11648 [2020-10-24 01:30:40,599 INFO L226 Difference]: Without dead ends: 4715 [2020-10-24 01:30:40,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1534 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=803, Invalid=4027, Unknown=0, NotChecked=0, Total=4830 [2020-10-24 01:30:40,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4715 states. [2020-10-24 01:30:41,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4715 to 4184. [2020-10-24 01:30:41,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4184 states. [2020-10-24 01:30:41,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4184 states to 4184 states and 4581 transitions. [2020-10-24 01:30:41,686 INFO L78 Accepts]: Start accepts. Automaton has 4184 states and 4581 transitions. Word has length 310 [2020-10-24 01:30:41,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:30:41,686 INFO L481 AbstractCegarLoop]: Abstraction has 4184 states and 4581 transitions. [2020-10-24 01:30:41,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-24 01:30:41,686 INFO L276 IsEmpty]: Start isEmpty. Operand 4184 states and 4581 transitions. [2020-10-24 01:30:41,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-24 01:30:41,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:30:41,693 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:30:41,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-24 01:30:41,694 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:30:41,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:30:41,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1380175551, now seen corresponding path program 1 times [2020-10-24 01:30:41,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:30:41,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885963671] [2020-10-24 01:30:41,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:30:41,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:41,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:30:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:41,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 01:30:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:41,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-24 01:30:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:41,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-24 01:30:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:42,023 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 172 proven. 10 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-24 01:30:42,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885963671] [2020-10-24 01:30:42,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:30:42,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 01:30:42,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128966065] [2020-10-24 01:30:42,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:30:42,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:30:42,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:30:42,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:30:42,025 INFO L87 Difference]: Start difference. First operand 4184 states and 4581 transitions. Second operand 7 states. [2020-10-24 01:30:45,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:30:45,843 INFO L93 Difference]: Finished difference Result 8247 states and 9011 transitions. [2020-10-24 01:30:45,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-24 01:30:45,843 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 311 [2020-10-24 01:30:45,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:30:45,859 INFO L225 Difference]: With dead ends: 8247 [2020-10-24 01:30:45,859 INFO L226 Difference]: Without dead ends: 3891 [2020-10-24 01:30:45,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-24 01:30:45,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3891 states. [2020-10-24 01:30:46,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3891 to 3720. [2020-10-24 01:30:46,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3720 states. [2020-10-24 01:30:46,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 3986 transitions. [2020-10-24 01:30:46,697 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 3986 transitions. Word has length 311 [2020-10-24 01:30:46,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:30:46,697 INFO L481 AbstractCegarLoop]: Abstraction has 3720 states and 3986 transitions. [2020-10-24 01:30:46,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:30:46,697 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 3986 transitions. [2020-10-24 01:30:46,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-24 01:30:46,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:30:46,702 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:30:46,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-24 01:30:46,702 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:30:46,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:30:46,703 INFO L82 PathProgramCache]: Analyzing trace with hash -439154888, now seen corresponding path program 1 times [2020-10-24 01:30:46,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:30:46,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318615523] [2020-10-24 01:30:46,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:30:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:46,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:30:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:46,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 01:30:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:47,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-24 01:30:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:47,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-24 01:30:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:47,476 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 234 proven. 18 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-24 01:30:47,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318615523] [2020-10-24 01:30:47,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:30:47,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-24 01:30:47,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723248503] [2020-10-24 01:30:47,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-24 01:30:47,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:30:47,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-24 01:30:47,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-24 01:30:47,478 INFO L87 Difference]: Start difference. First operand 3720 states and 3986 transitions. Second operand 14 states. [2020-10-24 01:30:47,818 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-10-24 01:30:48,220 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 98 [2020-10-24 01:30:48,573 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2020-10-24 01:30:49,087 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-10-24 01:30:49,561 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2020-10-24 01:30:49,940 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 92 [2020-10-24 01:30:50,498 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-10-24 01:30:50,958 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 95 [2020-10-24 01:30:52,519 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-24 01:30:53,619 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-10-24 01:30:54,520 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 96 [2020-10-24 01:30:55,589 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-10-24 01:30:56,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:30:56,895 INFO L93 Difference]: Finished difference Result 7361 states and 7929 transitions. [2020-10-24 01:30:56,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-24 01:30:56,896 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 333 [2020-10-24 01:30:56,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:30:56,910 INFO L225 Difference]: With dead ends: 7361 [2020-10-24 01:30:56,910 INFO L226 Difference]: Without dead ends: 3495 [2020-10-24 01:30:56,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=452, Invalid=1440, Unknown=0, NotChecked=0, Total=1892 [2020-10-24 01:30:56,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3495 states. [2020-10-24 01:30:57,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3495 to 3183. [2020-10-24 01:30:57,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3183 states. [2020-10-24 01:30:57,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3183 states to 3183 states and 3387 transitions. [2020-10-24 01:30:57,848 INFO L78 Accepts]: Start accepts. Automaton has 3183 states and 3387 transitions. Word has length 333 [2020-10-24 01:30:57,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:30:57,849 INFO L481 AbstractCegarLoop]: Abstraction has 3183 states and 3387 transitions. [2020-10-24 01:30:57,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-24 01:30:57,849 INFO L276 IsEmpty]: Start isEmpty. Operand 3183 states and 3387 transitions. [2020-10-24 01:30:57,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-24 01:30:57,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:30:57,854 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:30:57,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-24 01:30:57,854 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:30:57,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:30:57,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1601746571, now seen corresponding path program 1 times [2020-10-24 01:30:57,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:30:57,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186597989] [2020-10-24 01:30:57,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:30:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:58,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:30:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:58,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 01:30:58,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:58,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 01:30:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:58,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-24 01:30:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:30:58,418 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 164 proven. 3 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-24 01:30:58,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186597989] [2020-10-24 01:30:58,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:30:58,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 01:30:58,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105260137] [2020-10-24 01:30:58,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 01:30:58,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:30:58,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 01:30:58,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-24 01:30:58,421 INFO L87 Difference]: Start difference. First operand 3183 states and 3387 transitions. Second operand 10 states. [2020-10-24 01:30:59,833 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-24 01:31:00,212 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-24 01:31:02,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:31:02,538 INFO L93 Difference]: Finished difference Result 6413 states and 6872 transitions. [2020-10-24 01:31:02,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-24 01:31:02,539 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 344 [2020-10-24 01:31:02,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:31:02,551 INFO L225 Difference]: With dead ends: 6413 [2020-10-24 01:31:02,551 INFO L226 Difference]: Without dead ends: 3455 [2020-10-24 01:31:02,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2020-10-24 01:31:02,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3455 states. [2020-10-24 01:31:03,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3455 to 3145. [2020-10-24 01:31:03,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3145 states. [2020-10-24 01:31:03,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3145 states to 3145 states and 3342 transitions. [2020-10-24 01:31:03,779 INFO L78 Accepts]: Start accepts. Automaton has 3145 states and 3342 transitions. Word has length 344 [2020-10-24 01:31:03,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:31:03,779 INFO L481 AbstractCegarLoop]: Abstraction has 3145 states and 3342 transitions. [2020-10-24 01:31:03,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 01:31:03,779 INFO L276 IsEmpty]: Start isEmpty. Operand 3145 states and 3342 transitions. [2020-10-24 01:31:03,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-10-24 01:31:03,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:31:03,784 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:31:03,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-24 01:31:03,784 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:31:03,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:31:03,784 INFO L82 PathProgramCache]: Analyzing trace with hash -301344389, now seen corresponding path program 1 times [2020-10-24 01:31:03,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:31:03,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999212982] [2020-10-24 01:31:03,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:31:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:31:03,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:31:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:31:03,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 01:31:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:31:04,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 01:31:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:31:04,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-24 01:31:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:31:04,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-24 01:31:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:31:04,176 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 174 proven. 6 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-24 01:31:04,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999212982] [2020-10-24 01:31:04,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:31:04,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-24 01:31:04,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760646666] [2020-10-24 01:31:04,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 01:31:04,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:31:04,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 01:31:04,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-24 01:31:04,183 INFO L87 Difference]: Start difference. First operand 3145 states and 3342 transitions. Second operand 9 states. [2020-10-24 01:31:06,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:31:06,252 INFO L93 Difference]: Finished difference Result 5435 states and 5803 transitions. [2020-10-24 01:31:06,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-24 01:31:06,252 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 349 [2020-10-24 01:31:06,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:31:06,260 INFO L225 Difference]: With dead ends: 5435 [2020-10-24 01:31:06,260 INFO L226 Difference]: Without dead ends: 2264 [2020-10-24 01:31:06,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-24 01:31:06,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2020-10-24 01:31:07,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 2256. [2020-10-24 01:31:07,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2256 states. [2020-10-24 01:31:07,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 2384 transitions. [2020-10-24 01:31:07,062 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 2384 transitions. Word has length 349 [2020-10-24 01:31:07,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:31:07,063 INFO L481 AbstractCegarLoop]: Abstraction has 2256 states and 2384 transitions. [2020-10-24 01:31:07,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 01:31:07,063 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 2384 transitions. [2020-10-24 01:31:07,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-10-24 01:31:07,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:31:07,067 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:31:07,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-24 01:31:07,067 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:31:07,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:31:07,068 INFO L82 PathProgramCache]: Analyzing trace with hash 546736561, now seen corresponding path program 1 times [2020-10-24 01:31:07,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:31:07,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578545142] [2020-10-24 01:31:07,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:31:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:31:07,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:31:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:31:07,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-24 01:31:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:31:07,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 01:31:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:31:07,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-24 01:31:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:31:07,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-24 01:31:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:31:07,509 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 276 proven. 23 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-24 01:31:07,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578545142] [2020-10-24 01:31:07,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:31:07,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 01:31:07,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688761482] [2020-10-24 01:31:07,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 01:31:07,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:31:07,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 01:31:07,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-24 01:31:07,511 INFO L87 Difference]: Start difference. First operand 2256 states and 2384 transitions. Second operand 10 states. [2020-10-24 01:31:09,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:31:09,312 INFO L93 Difference]: Finished difference Result 2890 states and 3048 transitions. [2020-10-24 01:31:09,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-24 01:31:09,312 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 375 [2020-10-24 01:31:09,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:31:09,314 INFO L225 Difference]: With dead ends: 2890 [2020-10-24 01:31:09,314 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 01:31:09,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-24 01:31:09,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 01:31:09,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 01:31:09,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 01:31:09,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 01:31:09,320 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 375 [2020-10-24 01:31:09,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:31:09,320 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 01:31:09,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 01:31:09,320 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 01:31:09,320 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 01:31:09,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-24 01:31:09,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 01:31:12,632 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 54 [2020-10-24 01:31:13,005 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-24 01:31:53,850 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 217 [2020-10-24 01:32:32,948 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 217 [2020-10-24 01:33:20,061 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 217 [2020-10-24 01:33:20,209 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 217 [2020-10-24 01:33:20,357 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 217 [2020-10-24 01:33:20,509 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 217 [2020-10-24 01:33:22,301 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 188 [2020-10-24 01:33:24,277 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 188 [2020-10-24 01:33:38,363 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 217 [2020-10-24 01:33:38,514 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 217 [2020-10-24 01:33:38,665 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 217 [2020-10-24 01:33:59,210 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 217 [2020-10-24 01:34:17,390 WARN L193 SmtUtils]: Spent 2.63 s on a formula simplification. DAG size of input: 268 DAG size of output: 84 [2020-10-24 01:34:19,254 WARN L193 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 276 DAG size of output: 82 [2020-10-24 01:34:24,426 WARN L193 SmtUtils]: Spent 5.16 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-10-24 01:34:26,415 WARN L193 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 288 DAG size of output: 83 [2020-10-24 01:34:29,022 WARN L193 SmtUtils]: Spent 2.60 s on a formula simplification. DAG size of input: 268 DAG size of output: 84 [2020-10-24 01:34:34,193 WARN L193 SmtUtils]: Spent 5.16 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-10-24 01:34:39,360 WARN L193 SmtUtils]: Spent 5.16 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-10-24 01:34:44,579 WARN L193 SmtUtils]: Spent 5.21 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-10-24 01:34:47,220 WARN L193 SmtUtils]: Spent 2.63 s on a formula simplification. DAG size of input: 268 DAG size of output: 84 [2020-10-24 01:34:49,870 WARN L193 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 268 DAG size of output: 84 [2020-10-24 01:34:52,445 WARN L193 SmtUtils]: Spent 2.56 s on a formula simplification. DAG size of input: 266 DAG size of output: 89 [2020-10-24 01:34:57,661 WARN L193 SmtUtils]: Spent 5.21 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-10-24 01:34:59,339 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-10-24 01:35:01,579 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 284 DAG size of output: 85 [2020-10-24 01:35:03,482 WARN L193 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 279 DAG size of output: 84 [2020-10-24 01:35:05,166 WARN L193 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-10-24 01:35:06,977 WARN L193 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 227 DAG size of output: 84 [2020-10-24 01:35:08,646 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-10-24 01:35:10,637 WARN L193 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 230 DAG size of output: 89 [2020-10-24 01:35:12,307 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-10-24 01:35:14,005 WARN L193 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 230 DAG size of output: 71 [2020-10-24 01:35:18,870 WARN L193 SmtUtils]: Spent 4.85 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-10-24 01:35:23,710 WARN L193 SmtUtils]: Spent 4.83 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-10-24 01:35:25,773 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 249 DAG size of output: 85 [2020-10-24 01:35:27,461 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-10-24 01:35:30,175 WARN L193 SmtUtils]: Spent 2.68 s on a formula simplification. DAG size of input: 268 DAG size of output: 84 [2020-10-24 01:35:32,854 WARN L193 SmtUtils]: Spent 2.67 s on a formula simplification. DAG size of input: 268 DAG size of output: 84 [2020-10-24 01:35:38,152 WARN L193 SmtUtils]: Spent 5.29 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-10-24 01:35:40,296 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 292 DAG size of output: 86 [2020-10-24 01:35:42,949 WARN L193 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 284 DAG size of output: 88 [2020-10-24 01:35:47,878 WARN L193 SmtUtils]: Spent 4.92 s on a formula simplification. DAG size of input: 369 DAG size of output: 108 [2020-10-24 01:35:50,053 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 287 DAG size of output: 85 [2020-10-24 01:35:51,965 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 235 DAG size of output: 84 [2020-10-24 01:35:54,141 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 278 DAG size of output: 84 [2020-10-24 01:35:55,940 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 226 DAG size of output: 81 [2020-10-24 01:35:57,866 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 227 DAG size of output: 83 [2020-10-24 01:36:02,763 WARN L193 SmtUtils]: Spent 4.89 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-10-24 01:36:04,493 WARN L193 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-10-24 01:36:06,210 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-10-24 01:36:11,157 WARN L193 SmtUtils]: Spent 4.94 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-10-24 01:36:13,404 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 278 DAG size of output: 84 [2020-10-24 01:36:15,654 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 276 DAG size of output: 83 [2020-10-24 01:36:20,982 WARN L193 SmtUtils]: Spent 5.32 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-10-24 01:36:23,054 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 235 DAG size of output: 85 [2020-10-24 01:36:25,808 WARN L193 SmtUtils]: Spent 2.74 s on a formula simplification. DAG size of input: 282 DAG size of output: 90 [2020-10-24 01:36:31,019 WARN L193 SmtUtils]: Spent 5.20 s on a formula simplification. DAG size of input: 369 DAG size of output: 108 [2020-10-24 01:36:36,339 WARN L193 SmtUtils]: Spent 5.31 s on a formula simplification. DAG size of input: 369 DAG size of output: 108 [2020-10-24 01:36:38,242 WARN L193 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 233 DAG size of output: 83 [2020-10-24 01:36:40,374 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 274 DAG size of output: 83 [2020-10-24 01:36:42,416 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 248 DAG size of output: 86 [2020-10-24 01:36:44,475 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 232 DAG size of output: 84 [2020-10-24 01:36:46,281 WARN L193 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-10-24 01:36:48,181 WARN L193 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 235 DAG size of output: 84 [2020-10-24 01:36:49,985 WARN L193 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 226 DAG size of output: 82 [2020-10-24 01:36:51,978 WARN L193 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 249 DAG size of output: 83 [2020-10-24 01:36:53,689 WARN L193 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-10-24 01:36:55,637 WARN L193 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 233 DAG size of output: 83 [2020-10-24 01:37:00,561 WARN L193 SmtUtils]: Spent 4.91 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-10-24 01:37:05,459 WARN L193 SmtUtils]: Spent 4.89 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-10-24 01:37:10,496 WARN L193 SmtUtils]: Spent 5.01 s on a formula simplification. DAG size of input: 377 DAG size of output: 116 [2020-10-24 01:37:12,854 WARN L193 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 295 DAG size of output: 93 [2020-10-24 01:37:14,806 WARN L193 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 276 DAG size of output: 82 [2020-10-24 01:37:19,735 WARN L193 SmtUtils]: Spent 4.92 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-10-24 01:37:22,013 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 284 DAG size of output: 85 [2020-10-24 01:37:24,688 WARN L193 SmtUtils]: Spent 2.66 s on a formula simplification. DAG size of input: 266 DAG size of output: 89 [2020-10-24 01:37:26,682 WARN L193 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 235 DAG size of output: 84 [2020-10-24 01:37:32,042 WARN L193 SmtUtils]: Spent 5.35 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-10-24 01:37:34,691 WARN L193 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 266 DAG size of output: 89 [2020-10-24 01:37:40,060 WARN L193 SmtUtils]: Spent 5.36 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-10-24 01:37:45,413 WARN L193 SmtUtils]: Spent 5.34 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-10-24 01:37:50,812 WARN L193 SmtUtils]: Spent 5.39 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-10-24 01:37:53,497 WARN L193 SmtUtils]: Spent 2.68 s on a formula simplification. DAG size of input: 266 DAG size of output: 89 [2020-10-24 01:37:55,349 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 233 DAG size of output: 83 [2020-10-24 01:38:00,316 WARN L193 SmtUtils]: Spent 4.96 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-10-24 01:38:02,974 WARN L193 SmtUtils]: Spent 2.65 s on a formula simplification. DAG size of input: 288 DAG size of output: 92 [2020-10-24 01:38:05,378 WARN L193 SmtUtils]: Spent 2.39 s on a formula simplification. DAG size of input: 311 DAG size of output: 87 [2020-10-24 01:38:07,131 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-10-24 01:38:08,875 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-10-24 01:38:10,759 WARN L193 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 232 DAG size of output: 83 [2020-10-24 01:38:12,505 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-10-24 01:38:14,261 WARN L193 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-10-24 01:38:19,265 WARN L193 SmtUtils]: Spent 4.99 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-10-24 01:38:24,418 WARN L193 SmtUtils]: Spent 5.14 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-10-24 01:38:26,676 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 225 DAG size of output: 87 [2020-10-24 01:38:28,740 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 231 DAG size of output: 83 [2020-10-24 01:38:30,670 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 229 DAG size of output: 71 [2020-10-24 01:38:32,755 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 230 DAG size of output: 83 [2020-10-24 01:38:35,162 WARN L193 SmtUtils]: Spent 2.40 s on a formula simplification. DAG size of input: 290 DAG size of output: 85 [2020-10-24 01:38:41,002 WARN L193 SmtUtils]: Spent 5.82 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-10-24 01:38:46,407 WARN L193 SmtUtils]: Spent 5.39 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-10-24 01:38:51,715 WARN L193 SmtUtils]: Spent 5.30 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-10-24 01:38:53,859 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 234 DAG size of output: 87 [2020-10-24 01:38:56,769 WARN L193 SmtUtils]: Spent 2.90 s on a formula simplification. DAG size of input: 266 DAG size of output: 89 [2020-10-24 01:38:59,696 WARN L193 SmtUtils]: Spent 2.92 s on a formula simplification. DAG size of input: 266 DAG size of output: 89 [2020-10-24 01:39:05,474 WARN L193 SmtUtils]: Spent 5.77 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-10-24 01:39:08,552 WARN L193 SmtUtils]: Spent 3.07 s on a formula simplification. DAG size of input: 268 DAG size of output: 84 [2020-10-24 01:39:14,384 WARN L193 SmtUtils]: Spent 5.82 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-10-24 01:39:20,197 WARN L193 SmtUtils]: Spent 5.80 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-10-24 01:39:22,264 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 232 DAG size of output: 83 [2020-10-24 01:39:24,335 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 277 DAG size of output: 91 [2020-10-24 01:39:26,401 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 277 DAG size of output: 71 [2020-10-24 01:39:28,258 WARN L193 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-10-24 01:39:30,104 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-10-24 01:39:35,360 WARN L193 SmtUtils]: Spent 5.24 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-10-24 01:39:37,207 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-10-24 01:39:42,354 WARN L193 SmtUtils]: Spent 5.14 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-10-24 01:39:43,561 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 188 DAG size of output: 66 [2020-10-24 01:39:45,351 WARN L193 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-10-24 01:39:47,142 WARN L193 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 276 DAG size of output: 85 [2020-10-24 01:39:52,261 WARN L193 SmtUtils]: Spent 5.11 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-10-24 01:39:57,387 WARN L193 SmtUtils]: Spent 5.12 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-10-24 01:40:02,493 WARN L193 SmtUtils]: Spent 5.10 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-10-24 01:40:04,291 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 230 DAG size of output: 71 [2020-10-24 01:40:06,357 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 276 DAG size of output: 85 [2020-10-24 01:40:08,158 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-10-24 01:40:13,719 WARN L193 SmtUtils]: Spent 5.55 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-10-24 01:40:16,585 WARN L193 SmtUtils]: Spent 2.86 s on a formula simplification. DAG size of input: 268 DAG size of output: 84 [2020-10-24 01:40:19,370 WARN L193 SmtUtils]: Spent 2.78 s on a formula simplification. DAG size of input: 266 DAG size of output: 89 [2020-10-24 01:40:22,214 WARN L193 SmtUtils]: Spent 2.83 s on a formula simplification. DAG size of input: 268 DAG size of output: 84 [2020-10-24 01:40:24,428 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 289 DAG size of output: 86 [2020-10-24 01:40:26,142 WARN L193 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 233 DAG size of output: 84 [2020-10-24 01:40:27,959 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-10-24 01:40:30,156 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 281 DAG size of output: 86 [2020-10-24 01:40:32,012 WARN L193 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 225 DAG size of output: 71 [2020-10-24 01:40:34,008 WARN L193 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 278 DAG size of output: 82 [2020-10-24 01:40:36,041 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 276 DAG size of output: 82 [2020-10-24 01:40:37,858 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-10-24 01:40:39,935 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 231 DAG size of output: 84 [2020-10-24 01:40:41,907 WARN L193 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 232 DAG size of output: 71 [2020-10-24 01:40:47,033 WARN L193 SmtUtils]: Spent 5.12 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-10-24 01:40:49,286 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 275 DAG size of output: 71 [2020-10-24 01:40:54,463 WARN L193 SmtUtils]: Spent 5.17 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-10-24 01:40:59,611 WARN L193 SmtUtils]: Spent 5.14 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-10-24 01:41:01,427 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-10-24 01:41:03,535 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 227 DAG size of output: 87 [2020-10-24 01:41:05,560 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 230 DAG size of output: 88 [2020-10-24 01:41:07,950 WARN L193 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 284 DAG size of output: 85 [2020-10-24 01:41:10,002 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 240 DAG size of output: 84 [2020-10-24 01:41:12,075 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 235 DAG size of output: 84 [2020-10-24 01:41:14,013 WARN L193 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 228 DAG size of output: 80 [2020-10-24 01:41:16,141 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 228 DAG size of output: 88 [2020-10-24 01:41:18,190 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 275 DAG size of output: 84 [2020-10-24 01:41:20,035 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-10-24 01:41:22,871 WARN L193 SmtUtils]: Spent 2.83 s on a formula simplification. DAG size of input: 266 DAG size of output: 89 [2020-10-24 01:41:25,695 WARN L193 SmtUtils]: Spent 2.82 s on a formula simplification. DAG size of input: 266 DAG size of output: 89 [2020-10-24 01:41:31,389 WARN L193 SmtUtils]: Spent 5.68 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-10-24 01:41:34,241 WARN L193 SmtUtils]: Spent 2.84 s on a formula simplification. DAG size of input: 266 DAG size of output: 89 [2020-10-24 01:41:39,932 WARN L193 SmtUtils]: Spent 5.68 s on a formula simplification. DAG size of input: 374 DAG size of output: 119 [2020-10-24 01:41:42,773 WARN L193 SmtUtils]: Spent 2.82 s on a formula simplification. DAG size of input: 266 DAG size of output: 89 [2020-10-24 01:41:45,266 WARN L193 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 292 DAG size of output: 88 [2020-10-24 01:41:47,553 WARN L193 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 226 DAG size of output: 89 [2020-10-24 01:41:49,394 WARN L193 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-10-24 01:41:54,616 WARN L193 SmtUtils]: Spent 5.21 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-10-24 01:41:56,626 WARN L193 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 230 DAG size of output: 71 [2020-10-24 01:41:58,597 WARN L193 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 230 DAG size of output: 80 [2020-10-24 01:42:00,450 WARN L193 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 212 DAG size of output: 71 [2020-10-24 01:42:05,717 WARN L193 SmtUtils]: Spent 5.26 s on a formula simplification. DAG size of input: 378 DAG size of output: 113 [2020-10-24 01:42:08,581 WARN L193 SmtUtils]: Spent 2.86 s on a formula simplification. DAG size of input: 266 DAG size of output: 89 [2020-10-24 01:42:14,320 WARN L193 SmtUtils]: Spent 5.73 s on a formula simplification. DAG size of input: 374 DAG size of output: 119