/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/Problem01_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 05:35:14,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 05:35:14,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 05:35:14,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 05:35:14,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 05:35:14,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 05:35:14,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 05:35:14,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 05:35:14,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 05:35:14,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 05:35:14,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 05:35:14,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 05:35:14,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 05:35:14,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 05:35:14,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 05:35:14,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 05:35:14,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 05:35:14,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 05:35:14,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 05:35:14,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 05:35:14,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 05:35:14,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 05:35:14,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 05:35:14,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 05:35:14,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 05:35:14,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 05:35:14,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 05:35:14,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 05:35:14,460 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 05:35:14,473 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 05:35:14,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 05:35:14,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 05:35:14,476 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 05:35:14,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 05:35:14,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 05:35:14,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 05:35:14,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 05:35:14,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 05:35:14,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 05:35:14,478 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 05:35:14,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 05:35:14,478 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 05:35:14,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 05:35:14,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 05:35:14,479 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 05:35:14,479 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 05:35:14,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 05:35:14,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:35:14,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 05:35:14,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 05:35:14,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 05:35:14,481 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 05:35:14,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 05:35:14,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 05:35:14,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 05:35:14,907 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 05:35:14,908 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 05:35:14,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label54.c [2020-11-07 05:35:15,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ae1406ee/69b99731324e490d9d72b5e622b0967a/FLAG6d986c522 [2020-11-07 05:35:15,718 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 05:35:15,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label54.c [2020-11-07 05:35:15,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ae1406ee/69b99731324e490d9d72b5e622b0967a/FLAG6d986c522 [2020-11-07 05:35:15,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ae1406ee/69b99731324e490d9d72b5e622b0967a [2020-11-07 05:35:15,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 05:35:15,905 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 05:35:15,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 05:35:15,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 05:35:15,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 05:35:15,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:35:15" (1/1) ... [2020-11-07 05:35:15,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b9f3ff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:35:15, skipping insertion in model container [2020-11-07 05:35:15,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:35:15" (1/1) ... [2020-11-07 05:35:15,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 05:35:16,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 05:35:16,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:35:16,558 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 05:35:16,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:35:16,741 INFO L208 MainTranslator]: Completed translation [2020-11-07 05:35:16,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:35:16 WrapperNode [2020-11-07 05:35:16,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 05:35:16,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 05:35:16,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 05:35:16,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 05:35:16,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:35:16" (1/1) ... [2020-11-07 05:35:16,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:35:16" (1/1) ... [2020-11-07 05:35:16,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:35:16" (1/1) ... [2020-11-07 05:35:16,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:35:16" (1/1) ... [2020-11-07 05:35:16,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:35:16" (1/1) ... [2020-11-07 05:35:16,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:35:16" (1/1) ... [2020-11-07 05:35:16,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:35:16" (1/1) ... [2020-11-07 05:35:16,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 05:35:16,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 05:35:16,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 05:35:16,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 05:35:16,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:35:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:35:16,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 05:35:16,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 05:35:16,954 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 05:35:16,954 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-11-07 05:35:16,954 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 05:35:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-11-07 05:35:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 05:35:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 05:35:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 05:35:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 05:35:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 05:35:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-07 05:35:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 05:35:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 05:35:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 05:35:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 05:35:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 05:35:16,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 05:35:16,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 05:35:18,312 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 05:35:18,312 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 05:35:18,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:35:18 BoogieIcfgContainer [2020-11-07 05:35:18,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 05:35:18,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 05:35:18,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 05:35:18,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 05:35:18,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:35:15" (1/3) ... [2020-11-07 05:35:18,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca59e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:35:18, skipping insertion in model container [2020-11-07 05:35:18,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:35:16" (2/3) ... [2020-11-07 05:35:18,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca59e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:35:18, skipping insertion in model container [2020-11-07 05:35:18,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:35:18" (3/3) ... [2020-11-07 05:35:18,331 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label54.c [2020-11-07 05:35:18,356 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 05:35:18,360 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 05:35:18,374 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 05:35:18,401 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 05:35:18,402 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 05:35:18,402 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 05:35:18,402 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 05:35:18,402 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 05:35:18,402 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 05:35:18,403 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 05:35:18,403 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 05:35:18,465 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states. [2020-11-07 05:35:18,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-11-07 05:35:18,510 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:35:18,511 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] [2020-11-07 05:35:18,511 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:35:18,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:35:18,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1998046302, now seen corresponding path program 1 times [2020-11-07 05:35:18,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:35:18,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990598112] [2020-11-07 05:35:18,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:35:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:19,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:35:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:19,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:35:19,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990598112] [2020-11-07 05:35:19,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:35:19,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:35:19,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746883565] [2020-11-07 05:35:19,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:35:19,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:35:19,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:35:19,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:35:19,410 INFO L87 Difference]: Start difference. First operand 537 states. Second operand 4 states. [2020-11-07 05:35:22,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:35:22,376 INFO L93 Difference]: Finished difference Result 1248 states and 1647 transitions. [2020-11-07 05:35:22,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-07 05:35:22,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2020-11-07 05:35:22,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:35:22,415 INFO L225 Difference]: With dead ends: 1248 [2020-11-07 05:35:22,415 INFO L226 Difference]: Without dead ends: 670 [2020-11-07 05:35:22,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:35:22,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-11-07 05:35:22,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 614. [2020-11-07 05:35:22,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2020-11-07 05:35:22,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 724 transitions. [2020-11-07 05:35:22,689 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 724 transitions. Word has length 159 [2020-11-07 05:35:22,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:35:22,691 INFO L481 AbstractCegarLoop]: Abstraction has 614 states and 724 transitions. [2020-11-07 05:35:22,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:35:22,691 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 724 transitions. [2020-11-07 05:35:22,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-11-07 05:35:22,698 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:35:22,699 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] [2020-11-07 05:35:22,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 05:35:22,699 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:35:22,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:35:22,700 INFO L82 PathProgramCache]: Analyzing trace with hash -142564658, now seen corresponding path program 1 times [2020-11-07 05:35:22,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:35:22,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832170099] [2020-11-07 05:35:22,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:35:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:23,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:35:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:23,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:35:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:23,230 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-07 05:35:23,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832170099] [2020-11-07 05:35:23,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:35:23,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 05:35:23,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704220144] [2020-11-07 05:35:23,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:35:23,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:35:23,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:35:23,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:35:23,239 INFO L87 Difference]: Start difference. First operand 614 states and 724 transitions. Second operand 7 states. [2020-11-07 05:35:23,477 WARN L194 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:35:23,850 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 05:35:26,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:35:26,921 INFO L93 Difference]: Finished difference Result 1801 states and 2280 transitions. [2020-11-07 05:35:26,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-07 05:35:26,925 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-11-07 05:35:26,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:35:26,940 INFO L225 Difference]: With dead ends: 1801 [2020-11-07 05:35:26,941 INFO L226 Difference]: Without dead ends: 1219 [2020-11-07 05:35:26,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-07 05:35:26,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2020-11-07 05:35:27,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1043. [2020-11-07 05:35:27,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2020-11-07 05:35:27,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1310 transitions. [2020-11-07 05:35:27,180 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1310 transitions. Word has length 176 [2020-11-07 05:35:27,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:35:27,181 INFO L481 AbstractCegarLoop]: Abstraction has 1043 states and 1310 transitions. [2020-11-07 05:35:27,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:35:27,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1310 transitions. [2020-11-07 05:35:27,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-11-07 05:35:27,190 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:35:27,190 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:35:27,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 05:35:27,191 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:35:27,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:35:27,192 INFO L82 PathProgramCache]: Analyzing trace with hash 797546010, now seen corresponding path program 1 times [2020-11-07 05:35:27,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:35:27,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353550265] [2020-11-07 05:35:27,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:35:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:27,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:35:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:27,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:35:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:27,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 05:35:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:27,755 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-07 05:35:27,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353550265] [2020-11-07 05:35:27,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:35:27,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 05:35:27,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909954099] [2020-11-07 05:35:27,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:35:27,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:35:27,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:35:27,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:35:27,771 INFO L87 Difference]: Start difference. First operand 1043 states and 1310 transitions. Second operand 7 states. [2020-11-07 05:35:28,012 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:35:30,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:35:30,897 INFO L93 Difference]: Finished difference Result 2450 states and 3177 transitions. [2020-11-07 05:35:30,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 05:35:30,898 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 236 [2020-11-07 05:35:30,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:35:30,918 INFO L225 Difference]: With dead ends: 2450 [2020-11-07 05:35:30,918 INFO L226 Difference]: Without dead ends: 1439 [2020-11-07 05:35:30,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-11-07 05:35:30,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2020-11-07 05:35:31,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1229. [2020-11-07 05:35:31,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1229 states. [2020-11-07 05:35:31,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1534 transitions. [2020-11-07 05:35:31,165 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1534 transitions. Word has length 236 [2020-11-07 05:35:31,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:35:31,166 INFO L481 AbstractCegarLoop]: Abstraction has 1229 states and 1534 transitions. [2020-11-07 05:35:31,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:35:31,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1534 transitions. [2020-11-07 05:35:31,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-11-07 05:35:31,174 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:35:31,174 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:35:31,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 05:35:31,174 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:35:31,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:35:31,175 INFO L82 PathProgramCache]: Analyzing trace with hash 356832449, now seen corresponding path program 1 times [2020-11-07 05:35:31,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:35:31,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514194515] [2020-11-07 05:35:31,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:35:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:31,357 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 05:35:31,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:35:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:31,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:35:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:31,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-11-07 05:35:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:31,650 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-07 05:35:31,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514194515] [2020-11-07 05:35:31,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:35:31,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 05:35:31,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060878322] [2020-11-07 05:35:31,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:35:31,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:35:31,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:35:31,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:35:31,654 INFO L87 Difference]: Start difference. First operand 1229 states and 1534 transitions. Second operand 8 states. [2020-11-07 05:35:32,416 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:35:33,389 WARN L194 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-07 05:35:36,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:35:36,074 INFO L93 Difference]: Finished difference Result 3322 states and 4240 transitions. [2020-11-07 05:35:36,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-07 05:35:36,075 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 243 [2020-11-07 05:35:36,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:35:36,090 INFO L225 Difference]: With dead ends: 3322 [2020-11-07 05:35:36,091 INFO L226 Difference]: Without dead ends: 2125 [2020-11-07 05:35:36,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-11-07 05:35:36,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2020-11-07 05:35:36,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 1877. [2020-11-07 05:35:36,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1877 states. [2020-11-07 05:35:36,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 2285 transitions. [2020-11-07 05:35:36,551 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 2285 transitions. Word has length 243 [2020-11-07 05:35:36,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:35:36,551 INFO L481 AbstractCegarLoop]: Abstraction has 1877 states and 2285 transitions. [2020-11-07 05:35:36,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:35:36,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 2285 transitions. [2020-11-07 05:35:36,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-11-07 05:35:36,564 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:35:36,564 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:35:36,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 05:35:36,565 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:35:36,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:35:36,565 INFO L82 PathProgramCache]: Analyzing trace with hash 2136345987, now seen corresponding path program 1 times [2020-11-07 05:35:36,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:35:36,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805447533] [2020-11-07 05:35:36,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:35:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:36,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:35:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:36,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:35:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:36,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-11-07 05:35:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:36,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 05:35:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:36,963 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 80 proven. 24 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-11-07 05:35:36,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805447533] [2020-11-07 05:35:36,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:35:36,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 05:35:36,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886191318] [2020-11-07 05:35:36,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:35:36,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:35:36,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:35:36,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:35:36,967 INFO L87 Difference]: Start difference. First operand 1877 states and 2285 transitions. Second operand 8 states. [2020-11-07 05:35:37,693 WARN L194 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-07 05:35:41,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:35:41,380 INFO L93 Difference]: Finished difference Result 4127 states and 5040 transitions. [2020-11-07 05:35:41,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-07 05:35:41,381 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 272 [2020-11-07 05:35:41,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:35:41,400 INFO L225 Difference]: With dead ends: 4127 [2020-11-07 05:35:41,400 INFO L226 Difference]: Without dead ends: 2282 [2020-11-07 05:35:41,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-11-07 05:35:41,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2020-11-07 05:35:41,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2194. [2020-11-07 05:35:41,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2194 states. [2020-11-07 05:35:41,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2194 states to 2194 states and 2641 transitions. [2020-11-07 05:35:41,898 INFO L78 Accepts]: Start accepts. Automaton has 2194 states and 2641 transitions. Word has length 272 [2020-11-07 05:35:41,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:35:41,899 INFO L481 AbstractCegarLoop]: Abstraction has 2194 states and 2641 transitions. [2020-11-07 05:35:41,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:35:41,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2194 states and 2641 transitions. [2020-11-07 05:35:41,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-11-07 05:35:41,912 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:35:41,912 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:35:41,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 05:35:41,913 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:35:41,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:35:41,913 INFO L82 PathProgramCache]: Analyzing trace with hash -538595882, now seen corresponding path program 1 times [2020-11-07 05:35:41,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:35:41,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266657825] [2020-11-07 05:35:41,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:35:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:42,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:35:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:42,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:35:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:42,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:35:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:42,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-11-07 05:35:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:42,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 05:35:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:42,259 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 114 proven. 22 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-11-07 05:35:42,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266657825] [2020-11-07 05:35:42,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:35:42,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 05:35:42,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982455777] [2020-11-07 05:35:42,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:35:42,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:35:42,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:35:42,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:35:42,263 INFO L87 Difference]: Start difference. First operand 2194 states and 2641 transitions. Second operand 7 states. [2020-11-07 05:35:43,283 WARN L194 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:35:45,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:35:45,126 INFO L93 Difference]: Finished difference Result 5467 states and 6783 transitions. [2020-11-07 05:35:45,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 05:35:45,136 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2020-11-07 05:35:45,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:35:45,162 INFO L225 Difference]: With dead ends: 5467 [2020-11-07 05:35:45,162 INFO L226 Difference]: Without dead ends: 3305 [2020-11-07 05:35:45,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-11-07 05:35:45,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3305 states. [2020-11-07 05:35:46,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3305 to 3079. [2020-11-07 05:35:46,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3079 states. [2020-11-07 05:35:46,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3079 states to 3079 states and 3727 transitions. [2020-11-07 05:35:46,136 INFO L78 Accepts]: Start accepts. Automaton has 3079 states and 3727 transitions. Word has length 281 [2020-11-07 05:35:46,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:35:46,137 INFO L481 AbstractCegarLoop]: Abstraction has 3079 states and 3727 transitions. [2020-11-07 05:35:46,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:35:46,137 INFO L276 IsEmpty]: Start isEmpty. Operand 3079 states and 3727 transitions. [2020-11-07 05:35:46,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-11-07 05:35:46,152 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:35:46,153 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:35:46,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 05:35:46,153 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:35:46,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:35:46,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1947132653, now seen corresponding path program 1 times [2020-11-07 05:35:46,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:35:46,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169334288] [2020-11-07 05:35:46,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:35:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:46,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:35:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:46,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:35:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:46,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:35:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:46,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-11-07 05:35:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:46,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-11-07 05:35:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:46,553 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 138 proven. 28 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-11-07 05:35:46,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169334288] [2020-11-07 05:35:46,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:35:46,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 05:35:46,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659326153] [2020-11-07 05:35:46,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 05:35:46,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:35:46,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 05:35:46,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:35:46,556 INFO L87 Difference]: Start difference. First operand 3079 states and 3727 transitions. Second operand 10 states. [2020-11-07 05:35:46,978 WARN L194 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-11-07 05:35:47,553 WARN L194 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-11-07 05:35:47,899 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:35:48,723 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:35:49,763 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:35:50,598 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:35:54,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:35:54,104 INFO L93 Difference]: Finished difference Result 8643 states and 10482 transitions. [2020-11-07 05:35:54,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-07 05:35:54,105 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 289 [2020-11-07 05:35:54,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:35:54,139 INFO L225 Difference]: With dead ends: 8643 [2020-11-07 05:35:54,139 INFO L226 Difference]: Without dead ends: 5737 [2020-11-07 05:35:54,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=312, Invalid=1170, Unknown=0, NotChecked=0, Total=1482 [2020-11-07 05:35:54,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5737 states. [2020-11-07 05:35:55,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5737 to 5243. [2020-11-07 05:35:55,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5243 states. [2020-11-07 05:35:55,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5243 states to 5243 states and 6301 transitions. [2020-11-07 05:35:55,449 INFO L78 Accepts]: Start accepts. Automaton has 5243 states and 6301 transitions. Word has length 289 [2020-11-07 05:35:55,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:35:55,449 INFO L481 AbstractCegarLoop]: Abstraction has 5243 states and 6301 transitions. [2020-11-07 05:35:55,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 05:35:55,450 INFO L276 IsEmpty]: Start isEmpty. Operand 5243 states and 6301 transitions. [2020-11-07 05:35:55,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-11-07 05:35:55,472 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:35:55,473 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-11-07 05:35:55,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 05:35:55,473 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:35:55,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:35:55,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1784667156, now seen corresponding path program 1 times [2020-11-07 05:35:55,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:35:55,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644192806] [2020-11-07 05:35:55,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:35:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:55,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:35:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:55,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:35:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:55,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:35:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:55,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-11-07 05:35:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:55,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-11-07 05:35:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:35:55,875 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 134 proven. 44 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-11-07 05:35:55,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644192806] [2020-11-07 05:35:55,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:35:55,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 05:35:55,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143384837] [2020-11-07 05:35:55,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:35:55,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:35:55,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:35:55,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:35:55,878 INFO L87 Difference]: Start difference. First operand 5243 states and 6301 transitions. Second operand 8 states. [2020-11-07 05:35:57,023 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 05:35:57,727 WARN L194 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-07 05:36:00,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:36:00,656 INFO L93 Difference]: Finished difference Result 10688 states and 12864 transitions. [2020-11-07 05:36:00,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 05:36:00,656 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 303 [2020-11-07 05:36:00,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:36:00,691 INFO L225 Difference]: With dead ends: 10688 [2020-11-07 05:36:00,691 INFO L226 Difference]: Without dead ends: 5618 [2020-11-07 05:36:00,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-11-07 05:36:00,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5618 states. [2020-11-07 05:36:01,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5618 to 5537. [2020-11-07 05:36:01,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5537 states. [2020-11-07 05:36:01,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5537 states to 5537 states and 6620 transitions. [2020-11-07 05:36:01,776 INFO L78 Accepts]: Start accepts. Automaton has 5537 states and 6620 transitions. Word has length 303 [2020-11-07 05:36:01,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:36:01,777 INFO L481 AbstractCegarLoop]: Abstraction has 5537 states and 6620 transitions. [2020-11-07 05:36:01,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:36:01,777 INFO L276 IsEmpty]: Start isEmpty. Operand 5537 states and 6620 transitions. [2020-11-07 05:36:01,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-11-07 05:36:01,800 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:36:01,800 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:36:01,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 05:36:01,801 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:36:01,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:36:01,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1767054547, now seen corresponding path program 1 times [2020-11-07 05:36:01,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:36:01,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216503571] [2020-11-07 05:36:01,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:36:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:01,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:36:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:01,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:36:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:02,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 05:36:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:02,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-11-07 05:36:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:02,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-11-07 05:36:02,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:02,151 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 170 proven. 33 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-11-07 05:36:02,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216503571] [2020-11-07 05:36:02,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:36:02,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 05:36:02,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763629877] [2020-11-07 05:36:02,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:36:02,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:36:02,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:36:02,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:36:02,154 INFO L87 Difference]: Start difference. First operand 5537 states and 6620 transitions. Second operand 7 states. [2020-11-07 05:36:03,523 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:36:06,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:36:06,781 INFO L93 Difference]: Finished difference Result 12345 states and 14907 transitions. [2020-11-07 05:36:06,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 05:36:06,786 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 325 [2020-11-07 05:36:06,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:36:06,827 INFO L225 Difference]: With dead ends: 12345 [2020-11-07 05:36:06,827 INFO L226 Difference]: Without dead ends: 6981 [2020-11-07 05:36:06,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-11-07 05:36:06,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6981 states. [2020-11-07 05:36:08,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6981 to 6881. [2020-11-07 05:36:08,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6881 states. [2020-11-07 05:36:08,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6881 states to 6881 states and 8228 transitions. [2020-11-07 05:36:08,142 INFO L78 Accepts]: Start accepts. Automaton has 6881 states and 8228 transitions. Word has length 325 [2020-11-07 05:36:08,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:36:08,142 INFO L481 AbstractCegarLoop]: Abstraction has 6881 states and 8228 transitions. [2020-11-07 05:36:08,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:36:08,143 INFO L276 IsEmpty]: Start isEmpty. Operand 6881 states and 8228 transitions. [2020-11-07 05:36:08,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-11-07 05:36:08,167 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:36:08,167 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:36:08,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-07 05:36:08,168 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:36:08,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:36:08,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1072816840, now seen corresponding path program 1 times [2020-11-07 05:36:08,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:36:08,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918772969] [2020-11-07 05:36:08,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:36:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:08,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:36:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:08,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:36:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:08,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 05:36:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:08,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 05:36:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:08,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-11-07 05:36:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:08,718 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 192 proven. 28 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-11-07 05:36:08,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918772969] [2020-11-07 05:36:08,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:36:08,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 05:36:08,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873440077] [2020-11-07 05:36:08,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 05:36:08,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:36:08,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 05:36:08,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:36:08,721 INFO L87 Difference]: Start difference. First operand 6881 states and 8228 transitions. Second operand 10 states. [2020-11-07 05:36:09,045 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:36:10,859 WARN L194 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2020-11-07 05:36:11,054 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 05:36:11,315 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:36:12,056 WARN L194 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-07 05:36:13,200 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:36:13,838 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 05:36:17,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:36:17,353 INFO L93 Difference]: Finished difference Result 14470 states and 17386 transitions. [2020-11-07 05:36:17,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-07 05:36:17,355 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 336 [2020-11-07 05:36:17,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:36:17,388 INFO L225 Difference]: With dead ends: 14470 [2020-11-07 05:36:17,388 INFO L226 Difference]: Without dead ends: 7303 [2020-11-07 05:36:17,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=279, Invalid=1053, Unknown=0, NotChecked=0, Total=1332 [2020-11-07 05:36:17,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7303 states. [2020-11-07 05:36:19,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7303 to 6597. [2020-11-07 05:36:19,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6597 states. [2020-11-07 05:36:19,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6597 states to 6597 states and 7288 transitions. [2020-11-07 05:36:19,035 INFO L78 Accepts]: Start accepts. Automaton has 6597 states and 7288 transitions. Word has length 336 [2020-11-07 05:36:19,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:36:19,035 INFO L481 AbstractCegarLoop]: Abstraction has 6597 states and 7288 transitions. [2020-11-07 05:36:19,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 05:36:19,036 INFO L276 IsEmpty]: Start isEmpty. Operand 6597 states and 7288 transitions. [2020-11-07 05:36:19,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-11-07 05:36:19,050 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:36:19,050 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-07 05:36:19,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-07 05:36:19,051 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:36:19,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:36:19,051 INFO L82 PathProgramCache]: Analyzing trace with hash -399839654, now seen corresponding path program 1 times [2020-11-07 05:36:19,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:36:19,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274302591] [2020-11-07 05:36:19,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:36:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:19,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:36:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:19,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:36:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:19,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 05:36:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:19,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 05:36:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:19,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-11-07 05:36:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:19,491 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 240 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-11-07 05:36:19,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274302591] [2020-11-07 05:36:19,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:36:19,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 05:36:19,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239614060] [2020-11-07 05:36:19,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:36:19,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:36:19,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:36:19,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:36:19,494 INFO L87 Difference]: Start difference. First operand 6597 states and 7288 transitions. Second operand 8 states. [2020-11-07 05:36:19,827 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 05:36:20,440 WARN L194 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-07 05:36:24,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:36:24,069 INFO L93 Difference]: Finished difference Result 13443 states and 14874 transitions. [2020-11-07 05:36:24,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 05:36:24,070 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 346 [2020-11-07 05:36:24,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:36:24,103 INFO L225 Difference]: With dead ends: 13443 [2020-11-07 05:36:24,103 INFO L226 Difference]: Without dead ends: 6800 [2020-11-07 05:36:24,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-11-07 05:36:24,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6800 states. [2020-11-07 05:36:25,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6800 to 6578. [2020-11-07 05:36:25,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6578 states. [2020-11-07 05:36:25,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6578 states to 6578 states and 7177 transitions. [2020-11-07 05:36:25,491 INFO L78 Accepts]: Start accepts. Automaton has 6578 states and 7177 transitions. Word has length 346 [2020-11-07 05:36:25,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:36:25,492 INFO L481 AbstractCegarLoop]: Abstraction has 6578 states and 7177 transitions. [2020-11-07 05:36:25,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:36:25,492 INFO L276 IsEmpty]: Start isEmpty. Operand 6578 states and 7177 transitions. [2020-11-07 05:36:25,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2020-11-07 05:36:25,505 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:36:25,505 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:36:25,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-07 05:36:25,505 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:36:25,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:36:25,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1440132470, now seen corresponding path program 1 times [2020-11-07 05:36:25,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:36:25,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239819345] [2020-11-07 05:36:25,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:36:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:25,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:36:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:25,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:36:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:25,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-11-07 05:36:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:25,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-11-07 05:36:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:26,035 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 322 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-11-07 05:36:26,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239819345] [2020-11-07 05:36:26,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:36:26,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 05:36:26,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682958210] [2020-11-07 05:36:26,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:36:26,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:36:26,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:36:26,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:36:26,037 INFO L87 Difference]: Start difference. First operand 6578 states and 7177 transitions. Second operand 8 states. [2020-11-07 05:36:27,350 WARN L194 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-11-07 05:36:29,077 WARN L194 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:36:30,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:36:30,620 INFO L93 Difference]: Finished difference Result 14061 states and 15399 transitions. [2020-11-07 05:36:30,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-07 05:36:30,622 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 378 [2020-11-07 05:36:30,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:36:30,657 INFO L225 Difference]: With dead ends: 14061 [2020-11-07 05:36:30,658 INFO L226 Difference]: Without dead ends: 7656 [2020-11-07 05:36:30,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-11-07 05:36:30,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7656 states. [2020-11-07 05:36:32,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7656 to 6594. [2020-11-07 05:36:32,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6594 states. [2020-11-07 05:36:32,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6594 states to 6594 states and 7182 transitions. [2020-11-07 05:36:32,059 INFO L78 Accepts]: Start accepts. Automaton has 6594 states and 7182 transitions. Word has length 378 [2020-11-07 05:36:32,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:36:32,059 INFO L481 AbstractCegarLoop]: Abstraction has 6594 states and 7182 transitions. [2020-11-07 05:36:32,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:36:32,059 INFO L276 IsEmpty]: Start isEmpty. Operand 6594 states and 7182 transitions. [2020-11-07 05:36:32,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-11-07 05:36:32,073 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:36:32,074 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2020-11-07 05:36:32,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-07 05:36:32,074 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:36:32,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:36:32,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1996313723, now seen corresponding path program 1 times [2020-11-07 05:36:32,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:36:32,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398195437] [2020-11-07 05:36:32,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:36:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:32,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:36:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:32,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:36:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:32,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-11-07 05:36:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:32,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-11-07 05:36:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:32,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-11-07 05:36:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:32,853 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 215 proven. 4 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-11-07 05:36:32,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398195437] [2020-11-07 05:36:32,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:36:32,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-07 05:36:32,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231211264] [2020-11-07 05:36:32,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 05:36:32,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:36:32,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 05:36:32,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:36:32,856 INFO L87 Difference]: Start difference. First operand 6594 states and 7182 transitions. Second operand 5 states. [2020-11-07 05:36:35,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:36:35,954 INFO L93 Difference]: Finished difference Result 11709 states and 12794 transitions. [2020-11-07 05:36:35,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 05:36:35,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 399 [2020-11-07 05:36:35,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:36:35,973 INFO L225 Difference]: With dead ends: 11709 [2020-11-07 05:36:35,973 INFO L226 Difference]: Without dead ends: 4333 [2020-11-07 05:36:35,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-07 05:36:35,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4333 states. [2020-11-07 05:36:36,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4333 to 4320. [2020-11-07 05:36:36,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4320 states. [2020-11-07 05:36:36,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4320 states to 4320 states and 4616 transitions. [2020-11-07 05:36:36,963 INFO L78 Accepts]: Start accepts. Automaton has 4320 states and 4616 transitions. Word has length 399 [2020-11-07 05:36:36,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:36:36,964 INFO L481 AbstractCegarLoop]: Abstraction has 4320 states and 4616 transitions. [2020-11-07 05:36:36,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 05:36:36,964 INFO L276 IsEmpty]: Start isEmpty. Operand 4320 states and 4616 transitions. [2020-11-07 05:36:36,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-11-07 05:36:36,973 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:36:36,974 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-07 05:36:36,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-07 05:36:36,974 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:36:36,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:36:36,975 INFO L82 PathProgramCache]: Analyzing trace with hash -2043114662, now seen corresponding path program 1 times [2020-11-07 05:36:36,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:36:36,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806546021] [2020-11-07 05:36:36,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:36:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:37,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:36:37,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:37,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 05:36:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:37,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-11-07 05:36:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:37,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-11-07 05:36:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:37,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-11-07 05:36:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:37,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-11-07 05:36:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:36:37,704 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 225 proven. 40 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2020-11-07 05:36:37,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806546021] [2020-11-07 05:36:37,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:36:37,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-07 05:36:37,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647275959] [2020-11-07 05:36:37,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 05:36:37,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:36:37,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 05:36:37,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:36:37,707 INFO L87 Difference]: Start difference. First operand 4320 states and 4616 transitions. Second operand 7 states. [2020-11-07 05:36:41,131 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 05:36:41,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:36:41,647 INFO L93 Difference]: Finished difference Result 8520 states and 9107 transitions. [2020-11-07 05:36:41,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-07 05:36:41,647 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 423 [2020-11-07 05:36:41,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:36:41,651 INFO L225 Difference]: With dead ends: 8520 [2020-11-07 05:36:41,652 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 05:36:41,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-11-07 05:36:41,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 05:36:41,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 05:36:41,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 05:36:41,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 05:36:41,660 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 423 [2020-11-07 05:36:41,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:36:41,660 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 05:36:41,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 05:36:41,660 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 05:36:41,660 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 05:36:41,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-07 05:36:41,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 05:36:43,217 WARN L194 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 05:36:54,302 WARN L194 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 146 [2020-11-07 05:36:54,516 WARN L194 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 136 [2020-11-07 05:36:54,795 WARN L194 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 142 [2020-11-07 05:37:06,731 WARN L194 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 193 [2020-11-07 05:37:31,290 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 193 [2020-11-07 05:37:32,214 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 193 [2020-11-07 05:37:32,331 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 193 [2020-11-07 05:37:45,077 WARN L194 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 193 [2020-11-07 05:38:10,627 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 142 [2020-11-07 05:38:10,803 WARN L194 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 139 [2020-11-07 05:38:10,959 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 142 [2020-11-07 05:38:11,112 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 139 [2020-11-07 05:38:11,230 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 142 [2020-11-07 05:38:11,342 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 142 [2020-11-07 05:38:14,965 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 130 [2020-11-07 05:38:37,802 WARN L194 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 193 [2020-11-07 05:38:38,331 WARN L194 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 159 [2020-11-07 05:38:52,722 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 145 [2020-11-07 05:39:13,485 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 193 [2020-11-07 05:39:13,616 WARN L194 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 193 [2020-11-07 05:39:13,763 WARN L194 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 193 [2020-11-07 05:39:15,452 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 193 [2020-11-07 05:39:23,851 WARN L194 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 146 [2020-11-07 05:39:23,980 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 136 [2020-11-07 05:39:24,165 WARN L194 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 142 [2020-11-07 05:39:25,546 WARN L194 SmtUtils]: Spent 872.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-11-07 05:39:28,685 WARN L194 SmtUtils]: Spent 3.11 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:39:31,820 WARN L194 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:39:34,873 WARN L194 SmtUtils]: Spent 3.04 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:39:35,788 WARN L194 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-11-07 05:39:36,674 WARN L194 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-11-07 05:39:37,537 WARN L194 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-11-07 05:39:40,637 WARN L194 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:39:41,564 WARN L194 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-11-07 05:39:44,676 WARN L194 SmtUtils]: Spent 3.10 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:39:45,758 WARN L194 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 176 DAG size of output: 71 [2020-11-07 05:39:46,746 WARN L194 SmtUtils]: Spent 979.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 71 [2020-11-07 05:39:47,465 WARN L194 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 69 [2020-11-07 05:39:48,209 WARN L194 SmtUtils]: Spent 735.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 70 [2020-11-07 05:39:48,898 WARN L194 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 68 [2020-11-07 05:39:50,581 WARN L194 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 176 DAG size of output: 73 [2020-11-07 05:39:53,708 WARN L194 SmtUtils]: Spent 3.12 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:39:55,326 WARN L194 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 225 DAG size of output: 72 [2020-11-07 05:39:56,107 WARN L194 SmtUtils]: Spent 772.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 69 [2020-11-07 05:39:59,243 WARN L194 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:40:02,368 WARN L194 SmtUtils]: Spent 3.12 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:40:03,256 WARN L194 SmtUtils]: Spent 881.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 66 [2020-11-07 05:40:03,984 WARN L194 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 69 [2020-11-07 05:40:05,265 WARN L194 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 114 DAG size of output: 62 [2020-11-07 05:40:06,636 WARN L194 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 165 DAG size of output: 71 [2020-11-07 05:40:09,788 WARN L194 SmtUtils]: Spent 3.14 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:40:10,449 WARN L194 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 68 [2020-11-07 05:40:11,416 WARN L194 SmtUtils]: Spent 930.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-11-07 05:40:12,105 WARN L194 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 69 [2020-11-07 05:40:13,132 WARN L194 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 165 DAG size of output: 68 [2020-11-07 05:40:14,037 WARN L194 SmtUtils]: Spent 898.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 66 [2020-11-07 05:40:14,849 WARN L194 SmtUtils]: Spent 805.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 74 [2020-11-07 05:40:17,947 WARN L194 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:40:18,936 WARN L194 SmtUtils]: Spent 980.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 71 [2020-11-07 05:40:22,082 WARN L194 SmtUtils]: Spent 3.14 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:40:22,817 WARN L194 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 69 [2020-11-07 05:40:23,616 WARN L194 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 70 [2020-11-07 05:40:24,356 WARN L194 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 68 [2020-11-07 05:40:27,445 WARN L194 SmtUtils]: Spent 3.08 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:40:28,402 WARN L194 SmtUtils]: Spent 951.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 68 [2020-11-07 05:40:29,306 WARN L194 SmtUtils]: Spent 895.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 66 [2020-11-07 05:40:30,264 WARN L194 SmtUtils]: Spent 949.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 67 [2020-11-07 05:40:31,762 WARN L194 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 141 DAG size of output: 72 [2020-11-07 05:40:33,024 WARN L194 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 137 DAG size of output: 74 [2020-11-07 05:40:33,774 WARN L194 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 68 [2020-11-07 05:40:34,532 WARN L194 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 70 [2020-11-07 05:40:37,645 WARN L194 SmtUtils]: Spent 3.10 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:40:38,557 WARN L194 SmtUtils]: Spent 906.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 67 [2020-11-07 05:40:39,617 WARN L194 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 174 DAG size of output: 72 [2020-11-07 05:40:40,484 WARN L194 SmtUtils]: Spent 818.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 73 [2020-11-07 05:40:41,164 WARN L194 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 69 [2020-11-07 05:40:41,904 WARN L194 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 67 [2020-11-07 05:40:42,659 WARN L194 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 68 [2020-11-07 05:40:43,305 WARN L194 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 66 [2020-11-07 05:40:44,435 WARN L194 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 176 DAG size of output: 71 [2020-11-07 05:40:45,200 WARN L194 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 68 [2020-11-07 05:40:46,639 WARN L194 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 135 DAG size of output: 72 [2020-11-07 05:40:49,764 WARN L194 SmtUtils]: Spent 3.12 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:40:50,539 WARN L194 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 68 [2020-11-07 05:40:51,550 WARN L194 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 168 DAG size of output: 63 [2020-11-07 05:40:52,513 WARN L194 SmtUtils]: Spent 940.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-11-07 05:40:53,181 WARN L194 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 68 [2020-11-07 05:40:56,367 WARN L194 SmtUtils]: Spent 3.18 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:40:57,021 WARN L194 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 68 [2020-11-07 05:40:57,930 WARN L194 SmtUtils]: Spent 901.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-11-07 05:41:01,054 WARN L194 SmtUtils]: Spent 3.12 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:41:04,192 WARN L194 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:41:07,308 WARN L194 SmtUtils]: Spent 3.11 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:41:08,259 WARN L194 SmtUtils]: Spent 942.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-11-07 05:41:09,220 WARN L194 SmtUtils]: Spent 954.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-11-07 05:41:10,165 WARN L194 SmtUtils]: Spent 936.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-11-07 05:41:13,343 WARN L194 SmtUtils]: Spent 3.17 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:41:16,524 WARN L194 SmtUtils]: Spent 3.17 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:41:17,191 WARN L194 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 68 [2020-11-07 05:41:18,418 WARN L194 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 129 DAG size of output: 69 [2020-11-07 05:41:21,581 WARN L194 SmtUtils]: Spent 3.15 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:41:22,411 WARN L194 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 70 [2020-11-07 05:41:23,577 WARN L194 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 173 DAG size of output: 70 [2020-11-07 05:41:24,308 WARN L194 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 69 [2020-11-07 05:41:25,304 WARN L194 SmtUtils]: Spent 988.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 70 [2020-11-07 05:41:26,973 WARN L194 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 177 DAG size of output: 77 [2020-11-07 05:41:27,698 WARN L194 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 68 [2020-11-07 05:41:29,159 WARN L194 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 225 DAG size of output: 76 [2020-11-07 05:41:30,080 WARN L194 SmtUtils]: Spent 913.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 67 [2020-11-07 05:41:31,470 WARN L194 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 182 DAG size of output: 72 [2020-11-07 05:41:32,501 WARN L194 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 117 DAG size of output: 68 [2020-11-07 05:41:35,522 WARN L194 SmtUtils]: Spent 3.01 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:41:36,192 WARN L194 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 68 [2020-11-07 05:41:37,485 WARN L194 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 118 DAG size of output: 69 [2020-11-07 05:41:38,132 WARN L194 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 68 [2020-11-07 05:41:38,805 WARN L194 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 68 [2020-11-07 05:41:39,559 WARN L194 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 69 [2020-11-07 05:41:40,465 WARN L194 SmtUtils]: Spent 897.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-11-07 05:41:41,090 WARN L194 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2020-11-07 05:41:44,104 WARN L194 SmtUtils]: Spent 3.01 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:41:47,126 WARN L194 SmtUtils]: Spent 3.01 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:41:48,031 WARN L194 SmtUtils]: Spent 897.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-11-07 05:41:51,046 WARN L194 SmtUtils]: Spent 3.01 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:41:54,074 WARN L194 SmtUtils]: Spent 3.02 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:41:57,100 WARN L194 SmtUtils]: Spent 3.02 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:41:57,969 WARN L194 SmtUtils]: Spent 862.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-11-07 05:41:59,350 WARN L194 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 135 DAG size of output: 73 [2020-11-07 05:42:00,495 WARN L194 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 128 DAG size of output: 67 [2020-11-07 05:42:03,519 WARN L194 SmtUtils]: Spent 3.02 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:42:04,257 WARN L194 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 69 [2020-11-07 05:42:04,886 WARN L194 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 65 [2020-11-07 05:42:05,605 WARN L194 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2020-11-07 05:42:07,114 WARN L194 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 196 DAG size of output: 73 [2020-11-07 05:42:08,141 WARN L194 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 167 DAG size of output: 72 [2020-11-07 05:42:09,024 WARN L194 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 65 [2020-11-07 05:42:10,351 WARN L194 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 171 DAG size of output: 75 [2020-11-07 05:42:11,322 WARN L194 SmtUtils]: Spent 964.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 71 [2020-11-07 05:42:12,029 WARN L194 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 67 [2020-11-07 05:42:12,970 WARN L194 SmtUtils]: Spent 933.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 69 [2020-11-07 05:42:16,015 WARN L194 SmtUtils]: Spent 3.04 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:42:17,124 WARN L194 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 176 DAG size of output: 71 [2020-11-07 05:42:20,169 WARN L194 SmtUtils]: Spent 3.04 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:42:21,366 WARN L194 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 123 DAG size of output: 69 [2020-11-07 05:42:22,277 WARN L194 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-11-07 05:42:23,142 WARN L194 SmtUtils]: Spent 857.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-11-07 05:42:26,182 WARN L194 SmtUtils]: Spent 3.03 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:42:27,411 WARN L194 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 183 DAG size of output: 73 [2020-11-07 05:42:28,435 WARN L194 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 119 DAG size of output: 65 [2020-11-07 05:42:31,480 WARN L194 SmtUtils]: Spent 3.04 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:42:32,266 WARN L194 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2020-11-07 05:42:33,248 WARN L194 SmtUtils]: Spent 975.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 67 [2020-11-07 05:42:34,156 WARN L194 SmtUtils]: Spent 901.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 68 [2020-11-07 05:42:34,838 WARN L194 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 68 [2020-11-07 05:42:35,724 WARN L194 SmtUtils]: Spent 878.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 67 [2020-11-07 05:42:36,612 WARN L194 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 66 [2020-11-07 05:42:39,659 WARN L194 SmtUtils]: Spent 3.04 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:42:40,776 WARN L194 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 172 DAG size of output: 71 [2020-11-07 05:42:41,525 WARN L194 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 65 [2020-11-07 05:42:42,761 WARN L194 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 124 DAG size of output: 71 [2020-11-07 05:42:43,660 WARN L194 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2020-11-07 05:42:44,370 WARN L194 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 69 [2020-11-07 05:42:45,448 WARN L194 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 168 DAG size of output: 71 [2020-11-07 05:42:46,338 WARN L194 SmtUtils]: Spent 883.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 67 [2020-11-07 05:42:47,375 WARN L194 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 119 DAG size of output: 66 [2020-11-07 05:42:48,522 WARN L194 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 136 DAG size of output: 71 [2020-11-07 05:42:49,637 WARN L194 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 139 DAG size of output: 69 [2020-11-07 05:42:51,003 WARN L194 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 192 DAG size of output: 74 [2020-11-07 05:42:51,681 WARN L194 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 68 [2020-11-07 05:42:52,481 WARN L194 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 72 [2020-11-07 05:42:53,237 WARN L194 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 69 [2020-11-07 05:42:54,512 WARN L194 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 153 DAG size of output: 76 [2020-11-07 05:42:55,837 WARN L194 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 118 DAG size of output: 69 [2020-11-07 05:42:56,716 WARN L194 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-11-07 05:42:57,691 WARN L194 SmtUtils]: Spent 972.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 63 [2020-11-07 05:43:00,753 WARN L194 SmtUtils]: Spent 3.05 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:43:03,823 WARN L194 SmtUtils]: Spent 3.06 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:43:04,805 WARN L194 SmtUtils]: Spent 979.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 63 [2020-11-07 05:43:05,781 WARN L194 SmtUtils]: Spent 973.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 63 [2020-11-07 05:43:06,668 WARN L194 SmtUtils]: Spent 879.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-11-07 05:43:07,828 WARN L194 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 121 DAG size of output: 72 [2020-11-07 05:43:10,905 WARN L194 SmtUtils]: Spent 3.07 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:43:11,806 WARN L194 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 65 [2020-11-07 05:43:12,707 WARN L194 SmtUtils]: Spent 896.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 67 [2020-11-07 05:43:13,857 WARN L194 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 136 DAG size of output: 69 [2020-11-07 05:43:16,926 WARN L194 SmtUtils]: Spent 3.06 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:43:20,009 WARN L194 SmtUtils]: Spent 3.07 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:43:20,722 WARN L194 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 67 [2020-11-07 05:43:21,706 WARN L194 SmtUtils]: Spent 978.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 71 [2020-11-07 05:43:24,797 WARN L194 SmtUtils]: Spent 3.08 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:43:25,715 WARN L194 SmtUtils]: Spent 909.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-11-07 05:43:26,640 WARN L194 SmtUtils]: Spent 917.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-11-07 05:43:27,523 WARN L194 SmtUtils]: Spent 876.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-11-07 05:43:30,605 WARN L194 SmtUtils]: Spent 3.07 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:43:31,529 WARN L194 SmtUtils]: Spent 916.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-11-07 05:43:32,448 WARN L194 SmtUtils]: Spent 912.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-11-07 05:43:35,530 WARN L194 SmtUtils]: Spent 3.07 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:43:36,418 WARN L194 SmtUtils]: Spent 881.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-11-07 05:43:39,500 WARN L194 SmtUtils]: Spent 3.07 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:43:40,426 WARN L194 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-11-07 05:43:41,328 WARN L194 SmtUtils]: Spent 895.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 68 [2020-11-07 05:43:42,229 WARN L194 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 66 [2020-11-07 05:43:43,174 WARN L194 SmtUtils]: Spent 937.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 66 [2020-11-07 05:43:46,268 WARN L194 SmtUtils]: Spent 3.08 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:43:46,990 WARN L194 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 67 [2020-11-07 05:43:50,082 WARN L194 SmtUtils]: Spent 3.08 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:43:51,042 WARN L194 SmtUtils]: Spent 952.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 68 [2020-11-07 05:43:51,833 WARN L194 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 71 [2020-11-07 05:43:52,723 WARN L194 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-11-07 05:43:55,827 WARN L194 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:43:58,924 WARN L194 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:43:59,858 WARN L194 SmtUtils]: Spent 928.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 69 [2020-11-07 05:44:01,238 WARN L194 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 133 DAG size of output: 66 [2020-11-07 05:44:04,340 WARN L194 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:44:05,235 WARN L194 SmtUtils]: Spent 887.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-11-07 05:44:06,285 WARN L194 SmtUtils]: Spent 992.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 63 [2020-11-07 05:44:07,087 WARN L194 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 68 [2020-11-07 05:44:08,110 WARN L194 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 165 DAG size of output: 68 [2020-11-07 05:44:09,049 WARN L194 SmtUtils]: Spent 932.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 66 [2020-11-07 05:44:09,796 WARN L194 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 70 [2020-11-07 05:44:12,909 WARN L194 SmtUtils]: Spent 3.10 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:44:16,034 WARN L194 SmtUtils]: Spent 3.12 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:44:16,857 WARN L194 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2020-11-07 05:44:17,644 WARN L194 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 71 [2020-11-07 05:44:18,576 WARN L194 SmtUtils]: Spent 924.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 69 [2020-11-07 05:44:19,250 WARN L194 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 68 [2020-11-07 05:44:20,164 WARN L194 SmtUtils]: Spent 906.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 67 [2020-11-07 05:44:21,172 WARN L194 SmtUtils]: Spent 1000.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 68 [2020-11-07 05:44:21,896 WARN L194 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 67 [2020-11-07 05:44:22,603 WARN L194 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 66 [2020-11-07 05:44:23,291 WARN L194 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 65 [2020-11-07 05:44:24,207 WARN L194 SmtUtils]: Spent 909.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 66 [2020-11-07 05:44:25,121 WARN L194 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 67 [2020-11-07 05:44:26,004 WARN L194 SmtUtils]: Spent 876.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 74 [2020-11-07 05:44:29,139 WARN L194 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:44:30,311 WARN L194 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 142 DAG size of output: 71 [2020-11-07 05:44:31,547 WARN L194 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 128 DAG size of output: 70 [2020-11-07 05:44:32,206 WARN L194 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 67 [2020-11-07 05:44:33,327 WARN L194 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 121 DAG size of output: 67 [2020-11-07 05:44:36,453 WARN L194 SmtUtils]: Spent 3.12 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:44:37,395 WARN L194 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 67 [2020-11-07 05:44:40,535 WARN L194 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:44:41,671 WARN L194 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2020-11-07 05:44:42,602 WARN L194 SmtUtils]: Spent 924.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 67 [2020-11-07 05:44:43,686 WARN L194 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 117 DAG size of output: 69 [2020-11-07 05:44:46,830 WARN L194 SmtUtils]: Spent 3.14 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:44:47,519 WARN L194 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 66 [2020-11-07 05:44:49,201 WARN L194 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 229 DAG size of output: 78 [2020-11-07 05:44:50,131 WARN L194 SmtUtils]: Spent 923.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 65 [2020-11-07 05:44:50,900 WARN L194 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 69 [2020-11-07 05:44:52,404 WARN L194 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 203 DAG size of output: 76 [2020-11-07 05:44:53,099 WARN L194 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 67 [2020-11-07 05:44:56,239 WARN L194 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:44:56,925 WARN L194 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 68 [2020-11-07 05:45:00,080 WARN L194 SmtUtils]: Spent 3.15 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:45:00,972 WARN L194 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 73 [2020-11-07 05:45:01,648 WARN L194 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 68 [2020-11-07 05:45:02,575 WARN L194 SmtUtils]: Spent 921.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 65 [2020-11-07 05:45:04,047 WARN L194 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 182 DAG size of output: 72 [2020-11-07 05:45:07,200 WARN L194 SmtUtils]: Spent 3.14 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:45:08,144 WARN L194 SmtUtils]: Spent 936.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-11-07 05:45:09,062 WARN L194 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-11-07 05:45:09,678 WARN L194 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 54 [2020-11-07 05:45:10,586 WARN L194 SmtUtils]: Spent 901.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-11-07 05:45:13,749 WARN L194 SmtUtils]: Spent 3.15 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:45:14,383 WARN L194 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 54 [2020-11-07 05:45:17,537 WARN L194 SmtUtils]: Spent 3.15 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:45:20,692 WARN L194 SmtUtils]: Spent 3.15 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:45:21,384 WARN L194 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 66 [2020-11-07 05:45:24,550 WARN L194 SmtUtils]: Spent 3.16 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:45:25,209 WARN L194 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 67 [2020-11-07 05:45:26,139 WARN L194 SmtUtils]: Spent 924.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 66 [2020-11-07 05:45:29,311 WARN L194 SmtUtils]: Spent 3.16 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:45:31,181 WARN L194 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 206 DAG size of output: 78 [2020-11-07 05:45:32,110 WARN L194 SmtUtils]: Spent 922.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 66 [2020-11-07 05:45:32,856 WARN L194 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 69 [2020-11-07 05:45:36,036 WARN L194 SmtUtils]: Spent 3.17 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:45:36,816 WARN L194 SmtUtils]: Spent 772.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 68 [2020-11-07 05:45:40,006 WARN L194 SmtUtils]: Spent 3.18 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:45:40,921 WARN L194 SmtUtils]: Spent 909.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-11-07 05:45:44,103 WARN L194 SmtUtils]: Spent 3.17 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:45:47,289 WARN L194 SmtUtils]: Spent 3.18 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:45:48,696 WARN L194 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 125 DAG size of output: 62 [2020-11-07 05:45:49,446 WARN L194 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 67 [2020-11-07 05:45:50,207 WARN L194 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2020-11-07 05:45:53,392 WARN L194 SmtUtils]: Spent 3.18 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:45:54,217 WARN L194 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 69 [2020-11-07 05:45:57,408 WARN L194 SmtUtils]: Spent 3.18 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:45:58,165 WARN L194 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 69 [2020-11-07 05:45:59,191 WARN L194 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 163 DAG size of output: 67 [2020-11-07 05:46:02,376 WARN L194 SmtUtils]: Spent 3.18 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:46:03,120 WARN L194 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 67 [2020-11-07 05:46:04,363 WARN L194 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 144 DAG size of output: 74 [2020-11-07 05:46:06,145 WARN L194 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 177 DAG size of output: 77 [2020-11-07 05:46:07,082 WARN L194 SmtUtils]: Spent 930.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 72 [2020-11-07 05:46:10,269 WARN L194 SmtUtils]: Spent 3.18 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:46:13,453 WARN L194 SmtUtils]: Spent 3.18 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:46:14,413 WARN L194 SmtUtils]: Spent 952.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 69 [2020-11-07 05:46:15,243 WARN L194 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 70 [2020-11-07 05:46:18,434 WARN L194 SmtUtils]: Spent 3.18 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:46:21,624 WARN L194 SmtUtils]: Spent 3.18 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:46:23,387 WARN L194 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 204 DAG size of output: 72 [2020-11-07 05:46:24,918 WARN L194 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 216 DAG size of output: 75 [2020-11-07 05:46:28,110 WARN L194 SmtUtils]: Spent 3.18 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:46:28,791 WARN L194 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 67 [2020-11-07 05:46:30,055 WARN L194 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 144 DAG size of output: 73 [2020-11-07 05:46:31,428 WARN L194 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 183 DAG size of output: 74 [2020-11-07 05:46:32,477 WARN L194 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 165 DAG size of output: 68 [2020-11-07 05:46:35,676 WARN L194 SmtUtils]: Spent 3.19 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:46:38,889 WARN L194 SmtUtils]: Spent 3.20 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:46:40,538 WARN L194 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 206 DAG size of output: 74 [2020-11-07 05:46:41,971 WARN L194 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 119 DAG size of output: 68 [2020-11-07 05:46:45,179 WARN L194 SmtUtils]: Spent 3.20 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:46:45,951 WARN L194 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 69 [2020-11-07 05:46:49,173 WARN L194 SmtUtils]: Spent 3.21 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:46:49,837 WARN L194 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 63 [2020-11-07 05:46:50,566 WARN L194 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 68 [2020-11-07 05:46:51,744 WARN L194 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 125 DAG size of output: 67 [2020-11-07 05:46:52,403 WARN L194 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 63 [2020-11-07 05:46:53,185 WARN L194 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 69 [2020-11-07 05:46:56,388 WARN L194 SmtUtils]: Spent 3.20 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:46:57,568 WARN L194 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 176 DAG size of output: 71 [2020-11-07 05:46:58,675 WARN L194 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 174 DAG size of output: 72 [2020-11-07 05:47:00,214 WARN L194 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 123 DAG size of output: 70 [2020-11-07 05:47:01,162 WARN L194 SmtUtils]: Spent 941.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 67 [2020-11-07 05:47:01,850 WARN L194 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2020-11-07 05:47:05,264 WARN L194 SmtUtils]: Spent 3.40 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:47:08,497 WARN L194 SmtUtils]: Spent 3.22 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:47:09,857 WARN L194 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 130 DAG size of output: 74 [2020-11-07 05:47:10,901 WARN L194 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 163 DAG size of output: 67 [2020-11-07 05:47:11,687 WARN L194 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 68 [2020-11-07 05:47:14,927 WARN L194 SmtUtils]: Spent 3.23 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:47:16,115 WARN L194 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 176 DAG size of output: 71 [2020-11-07 05:47:16,923 WARN L194 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 69 [2020-11-07 05:47:17,718 WARN L194 SmtUtils]: Spent 789.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2020-11-07 05:47:20,969 WARN L194 SmtUtils]: Spent 3.24 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:47:21,116 WARN L194 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 36 [2020-11-07 05:47:24,373 WARN L194 SmtUtils]: Spent 3.25 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:47:27,629 WARN L194 SmtUtils]: Spent 3.25 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:47:28,806 WARN L194 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 167 DAG size of output: 71 [2020-11-07 05:47:30,741 WARN L194 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 226 DAG size of output: 77 [2020-11-07 05:47:32,172 WARN L194 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 165 DAG size of output: 71 [2020-11-07 05:47:33,421 WARN L194 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 138 DAG size of output: 70 [2020-11-07 05:47:34,740 WARN L194 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 156 DAG size of output: 74 [2020-11-07 05:47:35,725 WARN L194 SmtUtils]: Spent 979.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 67 [2020-11-07 05:47:36,758 WARN L194 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 167 DAG size of output: 71 [2020-11-07 05:47:38,059 WARN L194 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 183 DAG size of output: 73 [2020-11-07 05:47:39,193 WARN L194 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 130 DAG size of output: 73 [2020-11-07 05:47:42,451 WARN L194 SmtUtils]: Spent 3.25 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:47:45,723 WARN L194 SmtUtils]: Spent 3.26 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:47:46,466 WARN L194 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 66 [2020-11-07 05:47:48,046 WARN L194 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 210 DAG size of output: 71 [2020-11-07 05:47:48,998 WARN L194 SmtUtils]: Spent 944.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-11-07 05:47:52,275 WARN L194 SmtUtils]: Spent 3.27 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:47:53,561 WARN L194 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 144 DAG size of output: 72 [2020-11-07 05:47:54,547 WARN L194 SmtUtils]: Spent 976.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-11-07 05:47:55,547 WARN L194 SmtUtils]: Spent 978.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-11-07 05:47:56,489 WARN L194 SmtUtils]: Spent 934.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-11-07 05:47:59,774 WARN L194 SmtUtils]: Spent 3.28 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-11-07 05:48:00,763 WARN L194 SmtUtils]: Spent 981.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-11-07 05:48:04,048 WARN L194 SmtUtils]: Spent 3.28 s on a formula simplification. DAG size of input: 207 DAG size of output: 84