/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 02:08:13,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 02:08:13,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 02:08:13,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 02:08:13,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 02:08:13,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 02:08:13,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 02:08:13,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 02:08:13,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 02:08:13,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 02:08:13,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 02:08:13,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 02:08:13,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 02:08:13,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 02:08:13,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 02:08:13,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 02:08:13,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 02:08:13,318 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 02:08:13,330 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 02:08:13,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 02:08:13,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 02:08:13,333 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 02:08:13,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 02:08:13,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 02:08:13,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 02:08:13,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 02:08:13,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 02:08:13,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 02:08:13,335 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 02:08:13,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 02:08:13,335 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 02:08:13,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 02:08:13,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 02:08:13,336 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 02:08:13,336 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 02:08:13,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 02:08:13,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 02:08:13,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 02:08:13,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 02:08:13,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 02:08:13,338 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 02:08:13,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 02:08:13,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 02:08:13,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 02:08:13,829 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 02:08:13,829 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 02:08:13,830 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label39.c [2020-10-24 02:08:13,908 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5aa64a49/84289b74ceff41699d927cdb5e477f50/FLAGef75aef10 [2020-10-24 02:08:14,571 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 02:08:14,572 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label39.c [2020-10-24 02:08:14,597 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5aa64a49/84289b74ceff41699d927cdb5e477f50/FLAGef75aef10 [2020-10-24 02:08:14,861 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5aa64a49/84289b74ceff41699d927cdb5e477f50 [2020-10-24 02:08:14,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 02:08:14,874 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 02:08:14,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 02:08:14,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 02:08:14,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 02:08:14,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:08:14" (1/1) ... [2020-10-24 02:08:14,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38b0b290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:14, skipping insertion in model container [2020-10-24 02:08:14,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:08:14" (1/1) ... [2020-10-24 02:08:14,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 02:08:14,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 02:08:15,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:08:15,529 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 02:08:15,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:08:15,738 INFO L208 MainTranslator]: Completed translation [2020-10-24 02:08:15,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:15 WrapperNode [2020-10-24 02:08:15,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 02:08:15,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 02:08:15,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 02:08:15,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 02:08:15,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:15" (1/1) ... [2020-10-24 02:08:15,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:15" (1/1) ... [2020-10-24 02:08:15,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:15" (1/1) ... [2020-10-24 02:08:15,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:15" (1/1) ... [2020-10-24 02:08:15,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:15" (1/1) ... [2020-10-24 02:08:15,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:15" (1/1) ... [2020-10-24 02:08:15,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:15" (1/1) ... [2020-10-24 02:08:15,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 02:08:15,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 02:08:15,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 02:08:15,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 02:08:15,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 02:08:15,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 02:08:15,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 02:08:15,986 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 02:08:15,986 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-24 02:08:15,987 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 02:08:15,987 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-24 02:08:15,988 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 02:08:15,988 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 02:08:15,988 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 02:08:15,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 02:08:15,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 02:08:15,988 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-24 02:08:15,989 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 02:08:15,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 02:08:15,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 02:08:15,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 02:08:15,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 02:08:15,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 02:08:15,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 02:08:17,727 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 02:08:17,728 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-24 02:08:17,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:08:17 BoogieIcfgContainer [2020-10-24 02:08:17,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 02:08:17,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 02:08:17,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 02:08:17,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 02:08:17,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:08:14" (1/3) ... [2020-10-24 02:08:17,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6364b58b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:08:17, skipping insertion in model container [2020-10-24 02:08:17,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:15" (2/3) ... [2020-10-24 02:08:17,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6364b58b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:08:17, skipping insertion in model container [2020-10-24 02:08:17,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:08:17" (3/3) ... [2020-10-24 02:08:17,740 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem10_label39.c [2020-10-24 02:08:17,752 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 02:08:17,757 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 02:08:17,769 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 02:08:17,791 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 02:08:17,791 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 02:08:17,791 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 02:08:17,791 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 02:08:17,792 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 02:08:17,792 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 02:08:17,792 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 02:08:17,792 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 02:08:17,821 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states. [2020-10-24 02:08:17,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-24 02:08:17,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:08:17,834 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] [2020-10-24 02:08:17,834 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:08:17,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:08:17,841 INFO L82 PathProgramCache]: Analyzing trace with hash -68466208, now seen corresponding path program 1 times [2020-10-24 02:08:17,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:08:17,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261916472] [2020-10-24 02:08:17,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:08:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:08:18,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:08:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:08:18,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:08:18,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261916472] [2020-10-24 02:08:18,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:08:18,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-24 02:08:18,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116134323] [2020-10-24 02:08:18,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 02:08:18,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:08:18,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 02:08:18,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 02:08:18,360 INFO L87 Difference]: Start difference. First operand 468 states. Second operand 5 states. [2020-10-24 02:08:21,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:08:21,799 INFO L93 Difference]: Finished difference Result 1239 states and 1811 transitions. [2020-10-24 02:08:21,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 02:08:21,802 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-24 02:08:21,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:08:21,827 INFO L225 Difference]: With dead ends: 1239 [2020-10-24 02:08:21,828 INFO L226 Difference]: Without dead ends: 716 [2020-10-24 02:08:21,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-24 02:08:21,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-10-24 02:08:22,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 704. [2020-10-24 02:08:22,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2020-10-24 02:08:22,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 935 transitions. [2020-10-24 02:08:22,132 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 935 transitions. Word has length 54 [2020-10-24 02:08:22,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:08:22,133 INFO L481 AbstractCegarLoop]: Abstraction has 704 states and 935 transitions. [2020-10-24 02:08:22,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 02:08:22,133 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 935 transitions. [2020-10-24 02:08:22,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-24 02:08:22,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:08:22,151 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:08:22,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 02:08:22,152 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:08:22,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:08:22,153 INFO L82 PathProgramCache]: Analyzing trace with hash 397085007, now seen corresponding path program 1 times [2020-10-24 02:08:22,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:08:22,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110669470] [2020-10-24 02:08:22,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:08:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:08:22,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:08:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:08:22,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:08:22,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:08:22,596 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:08:22,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110669470] [2020-10-24 02:08:22,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:08:22,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-24 02:08:22,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551264344] [2020-10-24 02:08:22,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 02:08:22,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:08:22,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 02:08:22,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 02:08:22,604 INFO L87 Difference]: Start difference. First operand 704 states and 935 transitions. Second operand 8 states. [2020-10-24 02:08:25,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:08:25,388 INFO L93 Difference]: Finished difference Result 1569 states and 2140 transitions. [2020-10-24 02:08:25,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-24 02:08:25,389 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 137 [2020-10-24 02:08:25,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:08:25,399 INFO L225 Difference]: With dead ends: 1569 [2020-10-24 02:08:25,399 INFO L226 Difference]: Without dead ends: 888 [2020-10-24 02:08:25,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-24 02:08:25,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2020-10-24 02:08:25,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 862. [2020-10-24 02:08:25,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 862 states. [2020-10-24 02:08:25,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1099 transitions. [2020-10-24 02:08:25,585 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1099 transitions. Word has length 137 [2020-10-24 02:08:25,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:08:25,586 INFO L481 AbstractCegarLoop]: Abstraction has 862 states and 1099 transitions. [2020-10-24 02:08:25,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 02:08:25,587 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1099 transitions. [2020-10-24 02:08:25,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-24 02:08:25,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:08:25,590 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:08:25,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 02:08:25,591 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:08:25,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:08:25,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1553344420, now seen corresponding path program 1 times [2020-10-24 02:08:25,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:08:25,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429169920] [2020-10-24 02:08:25,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:08:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:08:25,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:08:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:08:25,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:08:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:08:25,846 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:08:25,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429169920] [2020-10-24 02:08:25,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:08:25,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-24 02:08:25,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522304067] [2020-10-24 02:08:25,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 02:08:25,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:08:25,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 02:08:25,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 02:08:25,849 INFO L87 Difference]: Start difference. First operand 862 states and 1099 transitions. Second operand 5 states. [2020-10-24 02:08:28,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:08:28,383 INFO L93 Difference]: Finished difference Result 2359 states and 3137 transitions. [2020-10-24 02:08:28,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 02:08:28,385 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-24 02:08:28,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:08:28,404 INFO L225 Difference]: With dead ends: 2359 [2020-10-24 02:08:28,404 INFO L226 Difference]: Without dead ends: 1520 [2020-10-24 02:08:28,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-24 02:08:28,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2020-10-24 02:08:28,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1326. [2020-10-24 02:08:28,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1326 states. [2020-10-24 02:08:28,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1664 transitions. [2020-10-24 02:08:28,627 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1664 transitions. Word has length 143 [2020-10-24 02:08:28,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:08:28,628 INFO L481 AbstractCegarLoop]: Abstraction has 1326 states and 1664 transitions. [2020-10-24 02:08:28,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 02:08:28,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1664 transitions. [2020-10-24 02:08:28,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-24 02:08:28,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:08:28,631 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:08:28,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 02:08:28,632 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:08:28,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:08:28,633 INFO L82 PathProgramCache]: Analyzing trace with hash 817772306, now seen corresponding path program 1 times [2020-10-24 02:08:28,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:08:28,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082699489] [2020-10-24 02:08:28,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:08:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:08:28,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:08:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:08:28,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:08:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:08:28,938 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:08:28,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082699489] [2020-10-24 02:08:28,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:08:28,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-24 02:08:28,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517159780] [2020-10-24 02:08:28,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 02:08:28,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:08:28,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 02:08:28,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-24 02:08:28,941 INFO L87 Difference]: Start difference. First operand 1326 states and 1664 transitions. Second operand 7 states. [2020-10-24 02:08:31,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:08:31,891 INFO L93 Difference]: Finished difference Result 3161 states and 4104 transitions. [2020-10-24 02:08:31,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-24 02:08:31,892 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-10-24 02:08:31,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:08:31,909 INFO L225 Difference]: With dead ends: 3161 [2020-10-24 02:08:31,910 INFO L226 Difference]: Without dead ends: 1858 [2020-10-24 02:08:31,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-24 02:08:31,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2020-10-24 02:08:32,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1496. [2020-10-24 02:08:32,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1496 states. [2020-10-24 02:08:32,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 1750 transitions. [2020-10-24 02:08:32,183 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 1750 transitions. Word has length 152 [2020-10-24 02:08:32,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:08:32,184 INFO L481 AbstractCegarLoop]: Abstraction has 1496 states and 1750 transitions. [2020-10-24 02:08:32,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 02:08:32,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 1750 transitions. [2020-10-24 02:08:32,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-24 02:08:32,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:08:32,187 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:08:32,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 02:08:32,187 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:08:32,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:08:32,188 INFO L82 PathProgramCache]: Analyzing trace with hash -866404089, now seen corresponding path program 1 times [2020-10-24 02:08:32,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:08:32,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881493923] [2020-10-24 02:08:32,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:08:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:08:32,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:08:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:08:32,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:08:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:08:32,866 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:08:32,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881493923] [2020-10-24 02:08:32,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:08:32,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-24 02:08:32,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051353374] [2020-10-24 02:08:32,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-24 02:08:32,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:08:32,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-24 02:08:32,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-24 02:08:32,869 INFO L87 Difference]: Start difference. First operand 1496 states and 1750 transitions. Second operand 12 states. [2020-10-24 02:08:33,567 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2020-10-24 02:08:33,795 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2020-10-24 02:08:34,293 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-24 02:08:35,172 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-10-24 02:08:35,439 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2020-10-24 02:08:35,645 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2020-10-24 02:08:36,110 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-10-24 02:08:36,305 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2020-10-24 02:08:38,496 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-10-24 02:08:38,725 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2020-10-24 02:08:40,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:08:40,635 INFO L93 Difference]: Finished difference Result 4697 states and 5605 transitions. [2020-10-24 02:08:40,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-24 02:08:40,636 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 181 [2020-10-24 02:08:40,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:08:40,660 INFO L225 Difference]: With dead ends: 4697 [2020-10-24 02:08:40,661 INFO L226 Difference]: Without dead ends: 3224 [2020-10-24 02:08:40,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=265, Invalid=857, Unknown=0, NotChecked=0, Total=1122 [2020-10-24 02:08:40,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3224 states. [2020-10-24 02:08:41,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3224 to 2473. [2020-10-24 02:08:41,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2473 states. [2020-10-24 02:08:41,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 2924 transitions. [2020-10-24 02:08:41,173 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 2924 transitions. Word has length 181 [2020-10-24 02:08:41,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:08:41,174 INFO L481 AbstractCegarLoop]: Abstraction has 2473 states and 2924 transitions. [2020-10-24 02:08:41,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-24 02:08:41,174 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 2924 transitions. [2020-10-24 02:08:41,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-24 02:08:41,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:08:41,180 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-24 02:08:41,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 02:08:41,181 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:08:41,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:08:41,181 INFO L82 PathProgramCache]: Analyzing trace with hash 352163714, now seen corresponding path program 1 times [2020-10-24 02:08:41,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:08:41,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468562499] [2020-10-24 02:08:41,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:08:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:08:41,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:08:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:08:41,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:08:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:08:41,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-24 02:08:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:08:41,541 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-24 02:08:41,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468562499] [2020-10-24 02:08:41,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:08:41,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-24 02:08:41,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735618653] [2020-10-24 02:08:41,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 02:08:41,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:08:41,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 02:08:41,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 02:08:41,545 INFO L87 Difference]: Start difference. First operand 2473 states and 2924 transitions. Second operand 5 states. [2020-10-24 02:08:44,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:08:44,522 INFO L93 Difference]: Finished difference Result 5925 states and 7106 transitions. [2020-10-24 02:08:44,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 02:08:44,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 255 [2020-10-24 02:08:44,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:08:44,551 INFO L225 Difference]: With dead ends: 5925 [2020-10-24 02:08:44,551 INFO L226 Difference]: Without dead ends: 3475 [2020-10-24 02:08:44,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-24 02:08:44,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3475 states. [2020-10-24 02:08:45,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3475 to 3126. [2020-10-24 02:08:45,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3126 states. [2020-10-24 02:08:45,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3126 states to 3126 states and 3741 transitions. [2020-10-24 02:08:45,345 INFO L78 Accepts]: Start accepts. Automaton has 3126 states and 3741 transitions. Word has length 255 [2020-10-24 02:08:45,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:08:45,346 INFO L481 AbstractCegarLoop]: Abstraction has 3126 states and 3741 transitions. [2020-10-24 02:08:45,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 02:08:45,346 INFO L276 IsEmpty]: Start isEmpty. Operand 3126 states and 3741 transitions. [2020-10-24 02:08:45,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-24 02:08:45,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:08:45,353 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-24 02:08:45,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-24 02:08:45,354 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:08:45,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:08:45,354 INFO L82 PathProgramCache]: Analyzing trace with hash 31932449, now seen corresponding path program 1 times [2020-10-24 02:08:45,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:08:45,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071548076] [2020-10-24 02:08:45,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:08:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:08:45,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:08:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:08:45,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:08:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:08:45,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-24 02:08:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:08:46,092 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-24 02:08:46,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071548076] [2020-10-24 02:08:46,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:08:46,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-24 02:08:46,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573467102] [2020-10-24 02:08:46,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-24 02:08:46,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:08:46,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-24 02:08:46,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-24 02:08:46,096 INFO L87 Difference]: Start difference. First operand 3126 states and 3741 transitions. Second operand 11 states. [2020-10-24 02:08:46,873 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2020-10-24 02:08:47,329 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-24 02:08:48,383 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2020-10-24 02:08:49,738 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-24 02:08:50,416 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2020-10-24 02:08:52,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:08:52,219 INFO L93 Difference]: Finished difference Result 7935 states and 9721 transitions. [2020-10-24 02:08:52,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-24 02:08:52,220 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 260 [2020-10-24 02:08:52,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:08:52,255 INFO L225 Difference]: With dead ends: 7935 [2020-10-24 02:08:52,255 INFO L226 Difference]: Without dead ends: 4832 [2020-10-24 02:08:52,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2020-10-24 02:08:52,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4832 states. [2020-10-24 02:08:53,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4832 to 3594. [2020-10-24 02:08:53,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3594 states. [2020-10-24 02:08:53,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 4258 transitions. [2020-10-24 02:08:53,048 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 4258 transitions. Word has length 260 [2020-10-24 02:08:53,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:08:53,048 INFO L481 AbstractCegarLoop]: Abstraction has 3594 states and 4258 transitions. [2020-10-24 02:08:53,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-24 02:08:53,049 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 4258 transitions. [2020-10-24 02:08:53,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-24 02:08:53,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:08:53,055 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-24 02:08:53,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-24 02:08:53,056 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:08:53,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:08:53,056 INFO L82 PathProgramCache]: Analyzing trace with hash 2036617923, now seen corresponding path program 1 times [2020-10-24 02:08:53,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:08:53,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371613658] [2020-10-24 02:08:53,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:08:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:08:53,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:08:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:08:53,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:08:53,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:08:53,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-24 02:08:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:08:53,591 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-24 02:08:53,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371613658] [2020-10-24 02:08:53,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:08:53,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 02:08:53,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146057629] [2020-10-24 02:08:53,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 02:08:53,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:08:53,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 02:08:53,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:08:53,600 INFO L87 Difference]: Start difference. First operand 3594 states and 4258 transitions. Second operand 10 states. [2020-10-24 02:08:59,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:08:59,539 INFO L93 Difference]: Finished difference Result 8555 states and 10241 transitions. [2020-10-24 02:08:59,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-24 02:08:59,540 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 270 [2020-10-24 02:08:59,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:08:59,566 INFO L225 Difference]: With dead ends: 8555 [2020-10-24 02:08:59,566 INFO L226 Difference]: Without dead ends: 4672 [2020-10-24 02:08:59,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2020-10-24 02:08:59,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4672 states. [2020-10-24 02:09:00,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4672 to 3584. [2020-10-24 02:09:00,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3584 states. [2020-10-24 02:09:00,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3584 states to 3584 states and 4227 transitions. [2020-10-24 02:09:00,309 INFO L78 Accepts]: Start accepts. Automaton has 3584 states and 4227 transitions. Word has length 270 [2020-10-24 02:09:00,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:09:00,309 INFO L481 AbstractCegarLoop]: Abstraction has 3584 states and 4227 transitions. [2020-10-24 02:09:00,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 02:09:00,310 INFO L276 IsEmpty]: Start isEmpty. Operand 3584 states and 4227 transitions. [2020-10-24 02:09:00,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-24 02:09:00,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:09:00,317 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-24 02:09:00,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-24 02:09:00,318 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:09:00,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:09:00,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1068313890, now seen corresponding path program 1 times [2020-10-24 02:09:00,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:09:00,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224846168] [2020-10-24 02:09:00,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:09:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:00,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:09:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:00,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:09:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:00,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-24 02:09:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:01,160 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 84 proven. 94 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-24 02:09:01,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224846168] [2020-10-24 02:09:01,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:09:01,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-24 02:09:01,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957820856] [2020-10-24 02:09:01,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-24 02:09:01,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:09:01,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-24 02:09:01,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-10-24 02:09:01,163 INFO L87 Difference]: Start difference. First operand 3584 states and 4227 transitions. Second operand 16 states. [2020-10-24 02:09:02,364 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-24 02:09:03,848 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-24 02:09:05,327 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2020-10-24 02:09:06,176 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-10-24 02:09:06,372 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2020-10-24 02:09:06,802 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-10-24 02:09:09,048 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-24 02:09:11,338 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2020-10-24 02:09:11,823 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2020-10-24 02:09:12,258 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-24 02:09:13,686 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-10-24 02:09:14,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:09:14,995 INFO L93 Difference]: Finished difference Result 10206 states and 12311 transitions. [2020-10-24 02:09:14,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-24 02:09:14,996 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 305 [2020-10-24 02:09:14,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:09:15,031 INFO L225 Difference]: With dead ends: 10206 [2020-10-24 02:09:15,031 INFO L226 Difference]: Without dead ends: 6645 [2020-10-24 02:09:15,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 948 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=660, Invalid=2532, Unknown=0, NotChecked=0, Total=3192 [2020-10-24 02:09:15,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6645 states. [2020-10-24 02:09:16,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6645 to 5175. [2020-10-24 02:09:16,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5175 states. [2020-10-24 02:09:16,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5175 states to 5175 states and 6117 transitions. [2020-10-24 02:09:16,315 INFO L78 Accepts]: Start accepts. Automaton has 5175 states and 6117 transitions. Word has length 305 [2020-10-24 02:09:16,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:09:16,316 INFO L481 AbstractCegarLoop]: Abstraction has 5175 states and 6117 transitions. [2020-10-24 02:09:16,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-24 02:09:16,316 INFO L276 IsEmpty]: Start isEmpty. Operand 5175 states and 6117 transitions. [2020-10-24 02:09:16,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-24 02:09:16,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:09:16,327 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:09:16,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-24 02:09:16,327 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:09:16,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:09:16,328 INFO L82 PathProgramCache]: Analyzing trace with hash -345023563, now seen corresponding path program 1 times [2020-10-24 02:09:16,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:09:16,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706335423] [2020-10-24 02:09:16,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:09:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:16,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:09:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:16,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:09:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:16,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-24 02:09:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:16,792 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-24 02:09:16,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706335423] [2020-10-24 02:09:16,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:09:16,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-24 02:09:16,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865507631] [2020-10-24 02:09:16,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 02:09:16,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:09:16,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 02:09:16,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-24 02:09:16,795 INFO L87 Difference]: Start difference. First operand 5175 states and 6117 transitions. Second operand 9 states. [2020-10-24 02:09:23,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:09:23,533 INFO L93 Difference]: Finished difference Result 13587 states and 16747 transitions. [2020-10-24 02:09:23,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-24 02:09:23,534 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 329 [2020-10-24 02:09:23,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:09:23,573 INFO L225 Difference]: With dead ends: 13587 [2020-10-24 02:09:23,574 INFO L226 Difference]: Without dead ends: 7941 [2020-10-24 02:09:23,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2020-10-24 02:09:23,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7941 states. [2020-10-24 02:09:25,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7941 to 6382. [2020-10-24 02:09:25,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6382 states. [2020-10-24 02:09:25,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6382 states to 6382 states and 7556 transitions. [2020-10-24 02:09:25,298 INFO L78 Accepts]: Start accepts. Automaton has 6382 states and 7556 transitions. Word has length 329 [2020-10-24 02:09:25,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:09:25,299 INFO L481 AbstractCegarLoop]: Abstraction has 6382 states and 7556 transitions. [2020-10-24 02:09:25,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 02:09:25,299 INFO L276 IsEmpty]: Start isEmpty. Operand 6382 states and 7556 transitions. [2020-10-24 02:09:25,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-24 02:09:25,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:09:25,309 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-24 02:09:25,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-24 02:09:25,309 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:09:25,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:09:25,310 INFO L82 PathProgramCache]: Analyzing trace with hash -772495789, now seen corresponding path program 1 times [2020-10-24 02:09:25,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:09:25,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941856132] [2020-10-24 02:09:25,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:09:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:25,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:09:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:25,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:09:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:25,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-24 02:09:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:25,793 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-24 02:09:25,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941856132] [2020-10-24 02:09:25,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:09:25,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-24 02:09:25,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674738602] [2020-10-24 02:09:25,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 02:09:25,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:09:25,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 02:09:25,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-24 02:09:25,795 INFO L87 Difference]: Start difference. First operand 6382 states and 7556 transitions. Second operand 9 states. [2020-10-24 02:09:32,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:09:32,437 INFO L93 Difference]: Finished difference Result 14632 states and 17704 transitions. [2020-10-24 02:09:32,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-24 02:09:32,438 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 346 [2020-10-24 02:09:32,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:09:32,453 INFO L225 Difference]: With dead ends: 14632 [2020-10-24 02:09:32,453 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 02:09:32,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2020-10-24 02:09:32,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 02:09:32,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 02:09:32,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 02:09:32,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 02:09:32,490 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 346 [2020-10-24 02:09:32,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:09:32,490 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 02:09:32,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 02:09:32,490 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 02:09:32,490 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 02:09:32,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-24 02:09:32,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 02:09:33,324 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 101 [2020-10-24 02:09:34,333 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 132 [2020-10-24 02:09:35,958 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 119 [2020-10-24 02:09:44,808 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 119 [2020-10-24 02:09:49,693 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 108 [2020-10-24 02:10:01,316 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 124 [2020-10-24 02:10:16,868 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 296 [2020-10-24 02:10:32,986 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 296 [2020-10-24 02:10:49,977 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 296 [2020-10-24 02:10:50,371 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 296 [2020-10-24 02:10:50,766 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 296 [2020-10-24 02:11:09,555 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 296 [2020-10-24 02:11:19,946 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 295 [2020-10-24 02:11:21,148 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 295 [2020-10-24 02:11:22,375 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 295 [2020-10-24 02:11:22,876 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 296 [2020-10-24 02:11:50,191 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 183 [2020-10-24 02:11:50,580 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 185 [2020-10-24 02:11:50,864 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 232 [2020-10-24 02:11:51,511 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 231 [2020-10-24 02:11:51,784 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 228 [2020-10-24 02:11:51,957 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 184 [2020-10-24 02:11:52,553 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 190 [2020-10-24 02:11:52,666 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 195 [2020-10-24 02:11:52,787 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 195 [2020-10-24 02:11:53,410 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 183 [2020-10-24 02:11:53,994 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 186 [2020-10-24 02:11:54,415 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 197 [2020-10-24 02:11:55,235 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 183 [2020-10-24 02:11:55,626 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 185 [2020-10-24 02:11:55,910 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 232 [2020-10-24 02:11:56,529 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 231 [2020-10-24 02:11:56,816 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 228 [2020-10-24 02:11:56,993 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 184 [2020-10-24 02:11:57,589 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 190 [2020-10-24 02:11:57,704 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 195 [2020-10-24 02:11:57,825 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 195 [2020-10-24 02:11:58,435 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 183 [2020-10-24 02:11:59,032 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 186 [2020-10-24 02:11:59,457 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 197 [2020-10-24 02:13:07,051 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 256 DAG size of output: 55 [2020-10-24 02:13:08,407 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 254 DAG size of output: 59 [2020-10-24 02:13:09,750 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 291 DAG size of output: 58 [2020-10-24 02:13:11,383 WARN L193 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 257 DAG size of output: 61 [2020-10-24 02:13:12,862 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 295 DAG size of output: 52 [2020-10-24 02:13:14,743 WARN L193 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 289 DAG size of output: 59 [2020-10-24 02:13:15,995 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 253 DAG size of output: 60 [2020-10-24 02:13:17,360 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 289 DAG size of output: 59 [2020-10-24 02:13:19,047 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 294 DAG size of output: 57 [2020-10-24 02:13:20,625 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 295 DAG size of output: 58 [2020-10-24 02:13:25,024 WARN L193 SmtUtils]: Spent 4.38 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:13:29,401 WARN L193 SmtUtils]: Spent 4.36 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:13:30,786 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 264 DAG size of output: 67 [2020-10-24 02:13:32,630 WARN L193 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 267 DAG size of output: 64 [2020-10-24 02:13:34,279 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 255 DAG size of output: 65 [2020-10-24 02:13:35,799 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 264 DAG size of output: 65 [2020-10-24 02:13:37,338 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 257 DAG size of output: 64 [2020-10-24 02:13:38,504 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 262 DAG size of output: 64 [2020-10-24 02:13:42,863 WARN L193 SmtUtils]: Spent 4.34 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:13:44,506 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 255 DAG size of output: 63 [2020-10-24 02:13:45,779 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 253 DAG size of output: 60 [2020-10-24 02:13:46,955 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 255 DAG size of output: 53 [2020-10-24 02:13:51,348 WARN L193 SmtUtils]: Spent 4.37 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:13:55,740 WARN L193 SmtUtils]: Spent 4.37 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:14:00,115 WARN L193 SmtUtils]: Spent 4.36 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:14:04,511 WARN L193 SmtUtils]: Spent 4.38 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:14:06,404 WARN L193 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 308 DAG size of output: 68 [2020-10-24 02:14:07,571 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 260 DAG size of output: 53 [2020-10-24 02:14:09,004 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 258 DAG size of output: 59 [2020-10-24 02:14:10,524 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 264 DAG size of output: 66 [2020-10-24 02:14:12,234 WARN L193 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 259 DAG size of output: 71 [2020-10-24 02:14:14,010 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 309 DAG size of output: 58 [2020-10-24 02:14:15,295 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 276 DAG size of output: 55 [2020-10-24 02:14:18,483 WARN L193 SmtUtils]: Spent 3.17 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-10-24 02:14:21,672 WARN L193 SmtUtils]: Spent 3.17 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-10-24 02:14:24,876 WARN L193 SmtUtils]: Spent 3.19 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-10-24 02:14:25,986 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-10-24 02:14:27,102 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-10-24 02:14:28,211 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-10-24 02:14:31,411 WARN L193 SmtUtils]: Spent 3.19 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-10-24 02:14:32,512 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-10-24 02:14:33,619 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-10-24 02:14:36,727 WARN L193 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 468 DAG size of output: 54 [2020-10-24 02:14:37,837 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-10-24 02:14:38,945 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 237 DAG size of output: 43 [2020-10-24 02:14:42,134 WARN L193 SmtUtils]: Spent 3.17 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-10-24 02:14:43,235 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 237 DAG size of output: 43 [2020-10-24 02:14:46,435 WARN L193 SmtUtils]: Spent 3.19 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-10-24 02:14:49,669 WARN L193 SmtUtils]: Spent 3.18 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-10-24 02:14:52,885 WARN L193 SmtUtils]: Spent 3.20 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-10-24 02:14:54,004 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-10-24 02:14:55,128 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-10-24 02:14:56,245 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-10-24 02:14:59,478 WARN L193 SmtUtils]: Spent 3.22 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-10-24 02:15:02,622 WARN L193 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 468 DAG size of output: 54 [2020-10-24 02:15:04,098 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 258 DAG size of output: 59 [2020-10-24 02:15:05,790 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 298 DAG size of output: 59 [2020-10-24 02:15:07,195 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 254 DAG size of output: 59 [2020-10-24 02:15:08,693 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 256 DAG size of output: 63 [2020-10-24 02:15:10,211 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 265 DAG size of output: 61 [2020-10-24 02:15:11,461 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 257 DAG size of output: 61 [2020-10-24 02:15:12,667 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 262 DAG size of output: 53 [2020-10-24 02:15:14,133 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 257 DAG size of output: 63 [2020-10-24 02:15:15,453 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 259 DAG size of output: 57 [2020-10-24 02:15:17,165 WARN L193 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 298 DAG size of output: 59 [2020-10-24 02:15:18,817 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 262 DAG size of output: 63 [2020-10-24 02:15:20,594 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 252 DAG size of output: 63 [2020-10-24 02:15:25,398 WARN L193 SmtUtils]: Spent 4.79 s on a formula simplification. DAG size of input: 586 DAG size of output: 69 [2020-10-24 02:15:30,168 WARN L193 SmtUtils]: Spent 4.75 s on a formula simplification. DAG size of input: 586 DAG size of output: 69 [2020-10-24 02:15:32,003 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 300 DAG size of output: 60 [2020-10-24 02:15:33,431 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 254 DAG size of output: 59 [2020-10-24 02:15:38,793 WARN L193 SmtUtils]: Spent 5.35 s on a formula simplification. DAG size of input: 621 DAG size of output: 71 [2020-10-24 02:15:40,371 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 291 DAG size of output: 57 [2020-10-24 02:15:44,905 WARN L193 SmtUtils]: Spent 4.52 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:15:46,704 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 294 DAG size of output: 57 [2020-10-24 02:15:51,271 WARN L193 SmtUtils]: Spent 4.55 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:15:52,945 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 290 DAG size of output: 55 [2020-10-24 02:15:54,605 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 257 DAG size of output: 57 [2020-10-24 02:15:56,907 WARN L193 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 304 DAG size of output: 62 [2020-10-24 02:15:58,324 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 255 DAG size of output: 57 [2020-10-24 02:15:59,630 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 258 DAG size of output: 57 [2020-10-24 02:16:01,108 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 257 DAG size of output: 62 [2020-10-24 02:16:02,589 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 257 DAG size of output: 54 [2020-10-24 02:16:03,904 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 256 DAG size of output: 61 [2020-10-24 02:16:05,177 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 251 DAG size of output: 55 [2020-10-24 02:16:06,659 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 255 DAG size of output: 60 [2020-10-24 02:16:08,271 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 255 DAG size of output: 61 [2020-10-24 02:16:09,780 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 255 DAG size of output: 55 [2020-10-24 02:16:11,001 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 261 DAG size of output: 53 [2020-10-24 02:16:12,142 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-10-24 02:16:13,295 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-10-24 02:16:15,179 WARN L193 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 312 DAG size of output: 63 [2020-10-24 02:16:17,020 WARN L193 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 309 DAG size of output: 58 [2020-10-24 02:16:21,864 WARN L193 SmtUtils]: Spent 4.83 s on a formula simplification. DAG size of input: 586 DAG size of output: 69 [2020-10-24 02:16:23,642 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 259 DAG size of output: 67 [2020-10-24 02:16:25,490 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 254 DAG size of output: 59 [2020-10-24 02:16:27,188 WARN L193 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 266 DAG size of output: 60 [2020-10-24 02:16:28,735 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 293 DAG size of output: 58 [2020-10-24 02:16:30,446 WARN L193 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 262 DAG size of output: 63 [2020-10-24 02:16:32,276 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 293 DAG size of output: 58 [2020-10-24 02:16:33,876 WARN L193 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 269 DAG size of output: 58 [2020-10-24 02:16:38,514 WARN L193 SmtUtils]: Spent 4.62 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:16:43,167 WARN L193 SmtUtils]: Spent 4.64 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:16:44,978 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 281 DAG size of output: 47 [2020-10-24 02:16:49,622 WARN L193 SmtUtils]: Spent 4.63 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:16:51,054 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 268 DAG size of output: 60 [2020-10-24 02:16:52,220 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-10-24 02:16:55,547 WARN L193 SmtUtils]: Spent 3.31 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-10-24 02:16:59,214 WARN L193 SmtUtils]: Spent 3.65 s on a formula simplification. DAG size of input: 498 DAG size of output: 59 [2020-10-24 02:17:00,738 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 277 DAG size of output: 51 [2020-10-24 02:17:05,661 WARN L193 SmtUtils]: Spent 4.91 s on a formula simplification. DAG size of input: 586 DAG size of output: 69 [2020-10-24 02:17:10,591 WARN L193 SmtUtils]: Spent 4.92 s on a formula simplification. DAG size of input: 586 DAG size of output: 69 [2020-10-24 02:17:12,609 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 289 DAG size of output: 59 [2020-10-24 02:17:14,115 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 259 DAG size of output: 63 [2020-10-24 02:17:16,159 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 267 DAG size of output: 63 [2020-10-24 02:17:17,737 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 255 DAG size of output: 61 [2020-10-24 02:17:19,164 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 263 DAG size of output: 60 [2020-10-24 02:17:20,789 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 299 DAG size of output: 66 [2020-10-24 02:17:22,073 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-10-24 02:17:25,729 WARN L193 SmtUtils]: Spent 3.64 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-10-24 02:17:29,287 WARN L193 SmtUtils]: Spent 3.54 s on a formula simplification. DAG size of input: 468 DAG size of output: 54 [2020-10-24 02:17:32,872 WARN L193 SmtUtils]: Spent 3.57 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-10-24 02:17:34,298 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 276 DAG size of output: 55 [2020-10-24 02:17:35,536 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-10-24 02:17:36,781 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-10-24 02:17:40,308 WARN L193 SmtUtils]: Spent 3.51 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-10-24 02:17:42,386 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 312 DAG size of output: 63 [2020-10-24 02:17:47,269 WARN L193 SmtUtils]: Spent 4.87 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:17:48,644 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 261 DAG size of output: 57 [2020-10-24 02:17:50,255 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 266 DAG size of output: 54 [2020-10-24 02:17:55,047 WARN L193 SmtUtils]: Spent 4.78 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:17:59,911 WARN L193 SmtUtils]: Spent 4.85 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:18:01,789 WARN L193 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 281 DAG size of output: 47 [2020-10-24 02:18:03,345 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 258 DAG size of output: 63 [2020-10-24 02:18:04,946 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 260 DAG size of output: 57 [2020-10-24 02:18:06,690 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 298 DAG size of output: 65 [2020-10-24 02:18:11,495 WARN L193 SmtUtils]: Spent 4.79 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:18:12,845 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 262 DAG size of output: 53 [2020-10-24 02:18:14,400 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 252 DAG size of output: 59 [2020-10-24 02:18:15,948 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 261 DAG size of output: 59 [2020-10-24 02:18:21,033 WARN L193 SmtUtils]: Spent 5.07 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:18:26,008 WARN L193 SmtUtils]: Spent 4.96 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:18:27,812 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 258 DAG size of output: 63 [2020-10-24 02:18:32,785 WARN L193 SmtUtils]: Spent 4.96 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:18:37,683 WARN L193 SmtUtils]: Spent 4.88 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:18:39,109 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 266 DAG size of output: 61 [2020-10-24 02:18:41,305 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 259 DAG size of output: 72 [2020-10-24 02:18:42,670 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 260 DAG size of output: 59 [2020-10-24 02:18:44,459 WARN L193 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 292 DAG size of output: 57 [2020-10-24 02:18:46,396 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 296 DAG size of output: 66 [2020-10-24 02:18:47,808 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 254 DAG size of output: 51 [2020-10-24 02:18:49,353 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 255 DAG size of output: 61 [2020-10-24 02:18:54,256 WARN L193 SmtUtils]: Spent 4.89 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:18:56,224 WARN L193 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 309 DAG size of output: 58 [2020-10-24 02:18:57,553 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 259 DAG size of output: 63 [2020-10-24 02:19:02,496 WARN L193 SmtUtils]: Spent 4.93 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:19:07,425 WARN L193 SmtUtils]: Spent 4.91 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:19:08,744 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 261 DAG size of output: 53 [2020-10-24 02:19:13,676 WARN L193 SmtUtils]: Spent 4.91 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:19:15,418 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 301 DAG size of output: 64 [2020-10-24 02:19:16,820 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 250 DAG size of output: 48 [2020-10-24 02:19:21,621 WARN L193 SmtUtils]: Spent 4.79 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:19:23,173 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 262 DAG size of output: 66 [2020-10-24 02:19:24,670 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 300 DAG size of output: 55 [2020-10-24 02:19:26,683 WARN L193 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 312 DAG size of output: 63 [2020-10-24 02:19:28,585 WARN L193 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 281 DAG size of output: 47 [2020-10-24 02:19:30,453 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 281 DAG size of output: 47 [2020-10-24 02:19:32,334 WARN L193 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 281 DAG size of output: 47 [2020-10-24 02:19:33,550 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-10-24 02:19:34,746 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-10-24 02:19:38,174 WARN L193 SmtUtils]: Spent 3.41 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-10-24 02:19:39,371 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-10-24 02:19:42,833 WARN L193 SmtUtils]: Spent 3.45 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-10-24 02:19:44,502 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 300 DAG size of output: 65 [2020-10-24 02:19:46,123 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 256 DAG size of output: 63 [2020-10-24 02:19:48,201 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 287 DAG size of output: 61 [2020-10-24 02:19:50,330 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 295 DAG size of output: 59 [2020-10-24 02:19:55,397 WARN L193 SmtUtils]: Spent 5.05 s on a formula simplification. DAG size of input: 586 DAG size of output: 69 [2020-10-24 02:20:00,442 WARN L193 SmtUtils]: Spent 5.03 s on a formula simplification. DAG size of input: 586 DAG size of output: 69 [2020-10-24 02:20:02,353 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 291 DAG size of output: 61 [2020-10-24 02:20:05,740 WARN L193 SmtUtils]: Spent 3.37 s on a formula simplification. DAG size of input: 468 DAG size of output: 54 [2020-10-24 02:20:06,953 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-10-24 02:20:10,420 WARN L193 SmtUtils]: Spent 3.45 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-10-24 02:20:13,832 WARN L193 SmtUtils]: Spent 3.40 s on a formula simplification. DAG size of input: 467 DAG size of output: 57 [2020-10-24 02:20:17,340 WARN L193 SmtUtils]: Spent 3.49 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-10-24 02:20:18,601 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-10-24 02:20:22,093 WARN L193 SmtUtils]: Spent 3.48 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-10-24 02:20:23,321 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-10-24 02:20:24,532 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-10-24 02:20:25,750 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 278 DAG size of output: 43 [2020-10-24 02:20:29,276 WARN L193 SmtUtils]: Spent 3.51 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-10-24 02:20:30,694 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 276 DAG size of output: 55 [2020-10-24 02:20:34,597 WARN L193 SmtUtils]: Spent 3.89 s on a formula simplification. DAG size of input: 498 DAG size of output: 59 [2020-10-24 02:20:37,107 WARN L193 SmtUtils]: Spent 2.50 s on a formula simplification. DAG size of input: 304 DAG size of output: 62 [2020-10-24 02:20:38,772 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 253 DAG size of output: 63 [2020-10-24 02:20:40,198 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 276 DAG size of output: 55 [2020-10-24 02:20:43,694 WARN L193 SmtUtils]: Spent 3.48 s on a formula simplification. DAG size of input: 468 DAG size of output: 54 [2020-10-24 02:20:45,133 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 276 DAG size of output: 55 [2020-10-24 02:20:48,707 WARN L193 SmtUtils]: Spent 3.56 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-10-24 02:20:52,258 WARN L193 SmtUtils]: Spent 3.54 s on a formula simplification. DAG size of input: 465 DAG size of output: 55 [2020-10-24 02:20:57,278 WARN L193 SmtUtils]: Spent 5.00 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:20:59,203 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 281 DAG size of output: 47 [2020-10-24 02:21:04,208 WARN L193 SmtUtils]: Spent 4.99 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:21:05,653 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 253 DAG size of output: 60 [2020-10-24 02:21:07,722 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 312 DAG size of output: 63 [2020-10-24 02:21:09,144 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 268 DAG size of output: 57 [2020-10-24 02:21:14,189 WARN L193 SmtUtils]: Spent 5.03 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:21:19,238 WARN L193 SmtUtils]: Spent 5.03 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:21:24,282 WARN L193 SmtUtils]: Spent 5.03 s on a formula simplification. DAG size of input: 574 DAG size of output: 77 [2020-10-24 02:21:26,081 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 260 DAG size of output: 73 [2020-10-24 02:21:27,633 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 259 DAG size of output: 63 [2020-10-24 02:21:29,265 WARN L193 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 256 DAG size of output: 61 [2020-10-24 02:21:30,804 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 256 DAG size of output: 58 [2020-10-24 02:21:32,687 WARN L193 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 292 DAG size of output: 55 [2020-10-24 02:21:34,791 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 312 DAG size of output: 63 [2020-10-24 02:21:36,663 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 256 DAG size of output: 63 [2020-10-24 02:21:38,481 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 263 DAG size of output: 60 [2020-10-24 02:21:40,039 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 268 DAG size of output: 60