/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 22:47:58,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 22:47:58,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 22:47:58,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 22:47:58,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 22:47:58,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 22:47:58,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 22:47:58,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 22:47:58,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 22:47:58,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 22:47:58,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 22:47:58,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 22:47:58,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 22:47:58,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 22:47:58,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 22:47:58,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 22:47:58,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 22:47:58,705 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 22:47:58,715 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 22:47:58,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 22:47:58,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 22:47:58,717 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 22:47:58,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 22:47:58,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 22:47:58,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 22:47:58,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 22:47:58,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 22:47:58,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 22:47:58,718 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 22:47:58,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 22:47:58,719 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 22:47:58,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 22:47:58,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 22:47:58,719 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 22:47:58,719 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 22:47:58,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 22:47:58,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:47:58,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 22:47:58,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 22:47:58,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 22:47:58,721 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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 [2020-08-22 22:47:59,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 22:47:59,045 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 22:47:59,048 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 22:47:59,050 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 22:47:59,051 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 22:47:59,051 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label45.c [2020-08-22 22:47:59,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae3925ac2/7199949517f3479987a37c87f3ee3533/FLAG1ccfaf7eb [2020-08-22 22:47:59,716 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 22:47:59,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label45.c [2020-08-22 22:47:59,734 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae3925ac2/7199949517f3479987a37c87f3ee3533/FLAG1ccfaf7eb [2020-08-22 22:47:59,956 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae3925ac2/7199949517f3479987a37c87f3ee3533 [2020-08-22 22:47:59,964 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 22:47:59,966 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 22:47:59,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 22:47:59,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 22:47:59,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 22:47:59,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:47:59" (1/1) ... [2020-08-22 22:47:59,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c219e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:47:59, skipping insertion in model container [2020-08-22 22:47:59,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:47:59" (1/1) ... [2020-08-22 22:47:59,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 22:48:00,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 22:48:00,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:48:00,464 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 22:48:00,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:48:00,724 INFO L208 MainTranslator]: Completed translation [2020-08-22 22:48:00,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:48:00 WrapperNode [2020-08-22 22:48:00,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 22:48:00,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 22:48:00,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 22:48:00,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 22:48:00,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:48:00" (1/1) ... [2020-08-22 22:48:00,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:48:00" (1/1) ... [2020-08-22 22:48:00,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:48:00" (1/1) ... [2020-08-22 22:48:00,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:48:00" (1/1) ... [2020-08-22 22:48:00,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:48:00" (1/1) ... [2020-08-22 22:48:00,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:48:00" (1/1) ... [2020-08-22 22:48:00,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:48:00" (1/1) ... [2020-08-22 22:48:00,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 22:48:00,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 22:48:00,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 22:48:00,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 22:48:00,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:48:00" (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 [2020-08-22 22:48:00,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 22:48:00,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 22:48:00,950 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-08-22 22:48:00,950 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 22:48:00,950 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-08-22 22:48:00,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 22:48:00,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 22:48:00,951 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 22:48:00,951 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 22:48:00,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 22:48:00,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 22:48:02,520 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 22:48:02,521 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 22:48:02,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:48:02 BoogieIcfgContainer [2020-08-22 22:48:02,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 22:48:02,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 22:48:02,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 22:48:02,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 22:48:02,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 10:47:59" (1/3) ... [2020-08-22 22:48:02,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a48c916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:48:02, skipping insertion in model container [2020-08-22 22:48:02,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:48:00" (2/3) ... [2020-08-22 22:48:02,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a48c916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:48:02, skipping insertion in model container [2020-08-22 22:48:02,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:48:02" (3/3) ... [2020-08-22 22:48:02,538 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label45.c [2020-08-22 22:48:02,549 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 22:48:02,558 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 22:48:02,572 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 22:48:02,596 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 22:48:02,596 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 22:48:02,596 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 22:48:02,597 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 22:48:02,597 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 22:48:02,597 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 22:48:02,597 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 22:48:02,597 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 22:48:02,623 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-08-22 22:48:02,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 22:48:02,637 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:48:02,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:48:02,639 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:48:02,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:48:02,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1037847345, now seen corresponding path program 1 times [2020-08-22 22:48:02,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:48:02,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382291752] [2020-08-22 22:48:02,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:48:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:02,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:48:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:03,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:48:03,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382291752] [2020-08-22 22:48:03,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:48:03,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 22:48:03,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002745616] [2020-08-22 22:48:03,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 22:48:03,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:48:03,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 22:48:03,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 22:48:03,075 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-08-22 22:48:05,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:48:05,652 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-08-22 22:48:05,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 22:48:05,654 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-08-22 22:48:05,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:48:05,693 INFO L225 Difference]: With dead ends: 1226 [2020-08-22 22:48:05,693 INFO L226 Difference]: Without dead ends: 707 [2020-08-22 22:48:05,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:48:05,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-08-22 22:48:05,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-08-22 22:48:05,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-08-22 22:48:05,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-08-22 22:48:05,936 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 57 [2020-08-22 22:48:05,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:48:05,936 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-08-22 22:48:05,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 22:48:05,937 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-08-22 22:48:05,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-08-22 22:48:05,966 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:48:05,969 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:48:05,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 22:48:05,970 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:48:05,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:48:05,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1358485705, now seen corresponding path program 1 times [2020-08-22 22:48:05,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:48:05,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668173449] [2020-08-22 22:48:05,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:48:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:06,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:48:06,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:06,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:48:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:06,254 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:48:06,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668173449] [2020-08-22 22:48:06,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:48:06,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 22:48:06,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988011642] [2020-08-22 22:48:06,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 22:48:06,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:48:06,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 22:48:06,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:48:06,279 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 8 states. [2020-08-22 22:48:08,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:48:08,391 INFO L93 Difference]: Finished difference Result 1559 states and 2130 transitions. [2020-08-22 22:48:08,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 22:48:08,392 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2020-08-22 22:48:08,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:48:08,405 INFO L225 Difference]: With dead ends: 1559 [2020-08-22 22:48:08,405 INFO L226 Difference]: Without dead ends: 879 [2020-08-22 22:48:08,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-08-22 22:48:08,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2020-08-22 22:48:08,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 853. [2020-08-22 22:48:08,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 853 states. [2020-08-22 22:48:08,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1090 transitions. [2020-08-22 22:48:08,521 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1090 transitions. Word has length 140 [2020-08-22 22:48:08,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:48:08,524 INFO L479 AbstractCegarLoop]: Abstraction has 853 states and 1090 transitions. [2020-08-22 22:48:08,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 22:48:08,524 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1090 transitions. [2020-08-22 22:48:08,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 22:48:08,540 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:48:08,541 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:48:08,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 22:48:08,542 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:48:08,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:48:08,542 INFO L82 PathProgramCache]: Analyzing trace with hash -861467326, now seen corresponding path program 1 times [2020-08-22 22:48:08,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:48:08,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312531469] [2020-08-22 22:48:08,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:48:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:08,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:48:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:08,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:48:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:08,844 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:48:08,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312531469] [2020-08-22 22:48:08,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:48:08,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 22:48:08,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681682079] [2020-08-22 22:48:08,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 22:48:08,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:48:08,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 22:48:08,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:48:08,847 INFO L87 Difference]: Start difference. First operand 853 states and 1090 transitions. Second operand 8 states. [2020-08-22 22:48:12,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:48:12,135 INFO L93 Difference]: Finished difference Result 2974 states and 4113 transitions. [2020-08-22 22:48:12,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 22:48:12,137 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 146 [2020-08-22 22:48:12,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:48:12,165 INFO L225 Difference]: With dead ends: 2974 [2020-08-22 22:48:12,165 INFO L226 Difference]: Without dead ends: 2136 [2020-08-22 22:48:12,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-08-22 22:48:12,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2020-08-22 22:48:12,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 1839. [2020-08-22 22:48:12,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1839 states. [2020-08-22 22:48:12,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 2431 transitions. [2020-08-22 22:48:12,370 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 2431 transitions. Word has length 146 [2020-08-22 22:48:12,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:48:12,371 INFO L479 AbstractCegarLoop]: Abstraction has 1839 states and 2431 transitions. [2020-08-22 22:48:12,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 22:48:12,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 2431 transitions. [2020-08-22 22:48:12,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-22 22:48:12,374 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:48:12,374 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:48:12,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 22:48:12,375 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:48:12,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:48:12,375 INFO L82 PathProgramCache]: Analyzing trace with hash 444399112, now seen corresponding path program 1 times [2020-08-22 22:48:12,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:48:12,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049617026] [2020-08-22 22:48:12,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:48:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:12,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:48:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:12,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:48:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:12,668 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:48:12,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049617026] [2020-08-22 22:48:12,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:48:12,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 22:48:12,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742956501] [2020-08-22 22:48:12,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 22:48:12,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:48:12,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 22:48:12,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:48:12,672 INFO L87 Difference]: Start difference. First operand 1839 states and 2431 transitions. Second operand 7 states. [2020-08-22 22:48:14,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:48:14,908 INFO L93 Difference]: Finished difference Result 4381 states and 5914 transitions. [2020-08-22 22:48:14,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 22:48:14,908 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 155 [2020-08-22 22:48:14,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:48:14,932 INFO L225 Difference]: With dead ends: 4381 [2020-08-22 22:48:14,932 INFO L226 Difference]: Without dead ends: 2557 [2020-08-22 22:48:14,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-08-22 22:48:14,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2557 states. [2020-08-22 22:48:15,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2557 to 2044. [2020-08-22 22:48:15,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2044 states. [2020-08-22 22:48:15,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 2741 transitions. [2020-08-22 22:48:15,157 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 2741 transitions. Word has length 155 [2020-08-22 22:48:15,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:48:15,158 INFO L479 AbstractCegarLoop]: Abstraction has 2044 states and 2741 transitions. [2020-08-22 22:48:15,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 22:48:15,158 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 2741 transitions. [2020-08-22 22:48:15,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-08-22 22:48:15,161 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:48:15,162 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:48:15,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 22:48:15,162 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:48:15,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:48:15,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1882471934, now seen corresponding path program 1 times [2020-08-22 22:48:15,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:48:15,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439761754] [2020-08-22 22:48:15,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:48:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:15,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:48:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:15,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:48:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:15,470 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:48:15,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439761754] [2020-08-22 22:48:15,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:48:15,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 22:48:15,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083660152] [2020-08-22 22:48:15,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 22:48:15,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:48:15,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 22:48:15,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:48:15,473 INFO L87 Difference]: Start difference. First operand 2044 states and 2741 transitions. Second operand 8 states. [2020-08-22 22:48:18,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:48:18,495 INFO L93 Difference]: Finished difference Result 5813 states and 8107 transitions. [2020-08-22 22:48:18,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 22:48:18,496 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 179 [2020-08-22 22:48:18,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:48:18,540 INFO L225 Difference]: With dead ends: 5813 [2020-08-22 22:48:18,540 INFO L226 Difference]: Without dead ends: 3934 [2020-08-22 22:48:18,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-22 22:48:18,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3934 states. [2020-08-22 22:48:19,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3934 to 3580. [2020-08-22 22:48:19,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3580 states. [2020-08-22 22:48:19,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 4673 transitions. [2020-08-22 22:48:19,042 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 4673 transitions. Word has length 179 [2020-08-22 22:48:19,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:48:19,043 INFO L479 AbstractCegarLoop]: Abstraction has 3580 states and 4673 transitions. [2020-08-22 22:48:19,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 22:48:19,043 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 4673 transitions. [2020-08-22 22:48:19,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-08-22 22:48:19,049 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:48:19,049 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 22:48:19,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 22:48:19,050 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:48:19,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:48:19,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1687252463, now seen corresponding path program 1 times [2020-08-22 22:48:19,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:48:19,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296764378] [2020-08-22 22:48:19,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:48:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:19,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:48:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:19,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:48:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:19,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 22:48:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:19,422 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 148 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 22:48:19,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296764378] [2020-08-22 22:48:19,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:48:19,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 22:48:19,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596076742] [2020-08-22 22:48:19,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 22:48:19,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:48:19,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 22:48:19,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 22:48:19,428 INFO L87 Difference]: Start difference. First operand 3580 states and 4673 transitions. Second operand 10 states. [2020-08-22 22:48:24,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:48:24,303 INFO L93 Difference]: Finished difference Result 8725 states and 11428 transitions. [2020-08-22 22:48:24,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 22:48:24,305 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 225 [2020-08-22 22:48:24,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:48:24,346 INFO L225 Difference]: With dead ends: 8725 [2020-08-22 22:48:24,346 INFO L226 Difference]: Without dead ends: 5310 [2020-08-22 22:48:24,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2020-08-22 22:48:24,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5310 states. [2020-08-22 22:48:24,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5310 to 3942. [2020-08-22 22:48:24,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3942 states. [2020-08-22 22:48:24,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 4869 transitions. [2020-08-22 22:48:24,839 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 4869 transitions. Word has length 225 [2020-08-22 22:48:24,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:48:24,840 INFO L479 AbstractCegarLoop]: Abstraction has 3942 states and 4869 transitions. [2020-08-22 22:48:24,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 22:48:24,840 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 4869 transitions. [2020-08-22 22:48:24,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-08-22 22:48:24,853 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:48:24,854 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:48:24,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 22:48:24,854 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:48:24,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:48:24,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1962116336, now seen corresponding path program 1 times [2020-08-22 22:48:24,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:48:24,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848121373] [2020-08-22 22:48:24,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:48:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:24,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:48:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:24,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:48:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:25,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 22:48:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:25,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-08-22 22:48:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:25,382 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 206 proven. 73 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-08-22 22:48:25,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848121373] [2020-08-22 22:48:25,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:48:25,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 22:48:25,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480848217] [2020-08-22 22:48:25,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 22:48:25,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:48:25,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 22:48:25,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:48:25,388 INFO L87 Difference]: Start difference. First operand 3942 states and 4869 transitions. Second operand 7 states. [2020-08-22 22:48:27,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:48:27,719 INFO L93 Difference]: Finished difference Result 7909 states and 9804 transitions. [2020-08-22 22:48:27,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 22:48:27,726 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 308 [2020-08-22 22:48:27,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:48:27,753 INFO L225 Difference]: With dead ends: 7909 [2020-08-22 22:48:27,753 INFO L226 Difference]: Without dead ends: 4132 [2020-08-22 22:48:27,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 22:48:27,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4132 states. [2020-08-22 22:48:28,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4132 to 3495. [2020-08-22 22:48:28,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3495 states. [2020-08-22 22:48:28,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3495 states to 3495 states and 4273 transitions. [2020-08-22 22:48:28,258 INFO L78 Accepts]: Start accepts. Automaton has 3495 states and 4273 transitions. Word has length 308 [2020-08-22 22:48:28,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:48:28,258 INFO L479 AbstractCegarLoop]: Abstraction has 3495 states and 4273 transitions. [2020-08-22 22:48:28,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 22:48:28,259 INFO L276 IsEmpty]: Start isEmpty. Operand 3495 states and 4273 transitions. [2020-08-22 22:48:28,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-08-22 22:48:28,272 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:48:28,273 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:48:28,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 22:48:28,273 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:48:28,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:48:28,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1639235331, now seen corresponding path program 1 times [2020-08-22 22:48:28,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:48:28,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164682613] [2020-08-22 22:48:28,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:48:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:28,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:48:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:28,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:48:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:28,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 22:48:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:28,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-08-22 22:48:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:28,748 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 123 proven. 141 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-08-22 22:48:28,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164682613] [2020-08-22 22:48:28,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:48:28,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 22:48:28,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126480879] [2020-08-22 22:48:28,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 22:48:28,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:48:28,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 22:48:28,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:48:28,751 INFO L87 Difference]: Start difference. First operand 3495 states and 4273 transitions. Second operand 7 states. [2020-08-22 22:48:30,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:48:30,409 INFO L93 Difference]: Finished difference Result 7150 states and 8751 transitions. [2020-08-22 22:48:30,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 22:48:30,409 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 315 [2020-08-22 22:48:30,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:48:30,431 INFO L225 Difference]: With dead ends: 7150 [2020-08-22 22:48:30,431 INFO L226 Difference]: Without dead ends: 3670 [2020-08-22 22:48:30,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-08-22 22:48:30,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3670 states. [2020-08-22 22:48:30,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3670 to 3653. [2020-08-22 22:48:30,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3653 states. [2020-08-22 22:48:30,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 4449 transitions. [2020-08-22 22:48:30,879 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 4449 transitions. Word has length 315 [2020-08-22 22:48:30,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:48:30,880 INFO L479 AbstractCegarLoop]: Abstraction has 3653 states and 4449 transitions. [2020-08-22 22:48:30,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 22:48:30,880 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 4449 transitions. [2020-08-22 22:48:30,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-08-22 22:48:30,892 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:48:30,892 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:48:30,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 22:48:30,893 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:48:30,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:48:30,893 INFO L82 PathProgramCache]: Analyzing trace with hash 221321404, now seen corresponding path program 1 times [2020-08-22 22:48:30,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:48:30,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911782733] [2020-08-22 22:48:30,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:48:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:31,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:48:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:31,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:48:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:31,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 22:48:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:31,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 22:48:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:31,536 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 143 proven. 204 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 22:48:31,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911782733] [2020-08-22 22:48:31,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:48:31,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 22:48:31,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063021419] [2020-08-22 22:48:31,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 22:48:31,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:48:31,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 22:48:31,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-22 22:48:31,553 INFO L87 Difference]: Start difference. First operand 3653 states and 4449 transitions. Second operand 11 states. [2020-08-22 22:48:35,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:48:35,712 INFO L93 Difference]: Finished difference Result 7861 states and 9569 transitions. [2020-08-22 22:48:35,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 22:48:35,713 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 320 [2020-08-22 22:48:35,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:48:35,737 INFO L225 Difference]: With dead ends: 7861 [2020-08-22 22:48:35,737 INFO L226 Difference]: Without dead ends: 4373 [2020-08-22 22:48:35,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=164, Invalid=648, Unknown=0, NotChecked=0, Total=812 [2020-08-22 22:48:35,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4373 states. [2020-08-22 22:48:36,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4373 to 4124. [2020-08-22 22:48:36,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4124 states. [2020-08-22 22:48:36,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4124 states to 4124 states and 4985 transitions. [2020-08-22 22:48:36,332 INFO L78 Accepts]: Start accepts. Automaton has 4124 states and 4985 transitions. Word has length 320 [2020-08-22 22:48:36,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:48:36,333 INFO L479 AbstractCegarLoop]: Abstraction has 4124 states and 4985 transitions. [2020-08-22 22:48:36,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 22:48:36,333 INFO L276 IsEmpty]: Start isEmpty. Operand 4124 states and 4985 transitions. [2020-08-22 22:48:36,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-08-22 22:48:36,351 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:48:36,351 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:48:36,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 22:48:36,351 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:48:36,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:48:36,352 INFO L82 PathProgramCache]: Analyzing trace with hash -2117887098, now seen corresponding path program 1 times [2020-08-22 22:48:36,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:48:36,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608560333] [2020-08-22 22:48:36,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:48:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:36,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:48:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:36,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:48:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:36,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 22:48:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:36,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-22 22:48:36,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:36,758 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 287 proven. 16 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-08-22 22:48:36,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608560333] [2020-08-22 22:48:36,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:48:36,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 22:48:36,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870585797] [2020-08-22 22:48:36,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 22:48:36,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:48:36,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 22:48:36,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-22 22:48:36,760 INFO L87 Difference]: Start difference. First operand 4124 states and 4985 transitions. Second operand 11 states. [2020-08-22 22:48:41,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:48:41,294 INFO L93 Difference]: Finished difference Result 10653 states and 12990 transitions. [2020-08-22 22:48:41,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 22:48:41,295 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 383 [2020-08-22 22:48:41,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:48:41,319 INFO L225 Difference]: With dead ends: 10653 [2020-08-22 22:48:41,320 INFO L226 Difference]: Without dead ends: 4617 [2020-08-22 22:48:41,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2020-08-22 22:48:41,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4617 states. [2020-08-22 22:48:41,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4617 to 3554. [2020-08-22 22:48:41,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3554 states. [2020-08-22 22:48:41,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 3950 transitions. [2020-08-22 22:48:41,851 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 3950 transitions. Word has length 383 [2020-08-22 22:48:41,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:48:41,852 INFO L479 AbstractCegarLoop]: Abstraction has 3554 states and 3950 transitions. [2020-08-22 22:48:41,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 22:48:41,852 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 3950 transitions. [2020-08-22 22:48:41,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2020-08-22 22:48:41,862 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:48:41,863 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-08-22 22:48:41,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 22:48:41,863 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:48:41,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:48:41,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1497559813, now seen corresponding path program 1 times [2020-08-22 22:48:41,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:48:41,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875883281] [2020-08-22 22:48:41,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:48:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:42,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:48:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:42,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:48:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:42,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 22:48:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:42,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-08-22 22:48:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:42,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-08-22 22:48:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:42,595 INFO L134 CoverageAnalysis]: Checked inductivity of 655 backedges. 177 proven. 393 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-08-22 22:48:42,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875883281] [2020-08-22 22:48:42,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:48:42,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 22:48:42,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328494791] [2020-08-22 22:48:42,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 22:48:42,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:48:42,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 22:48:42,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-08-22 22:48:42,598 INFO L87 Difference]: Start difference. First operand 3554 states and 3950 transitions. Second operand 16 states. [2020-08-22 22:48:49,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:48:49,254 INFO L93 Difference]: Finished difference Result 9034 states and 10173 transitions. [2020-08-22 22:48:49,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-08-22 22:48:49,255 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 439 [2020-08-22 22:48:49,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:48:49,287 INFO L225 Difference]: With dead ends: 9034 [2020-08-22 22:48:49,287 INFO L226 Difference]: Without dead ends: 5650 [2020-08-22 22:48:49,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=361, Invalid=1361, Unknown=0, NotChecked=0, Total=1722 [2020-08-22 22:48:49,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5650 states. [2020-08-22 22:48:49,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5650 to 4170. [2020-08-22 22:48:49,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4170 states. [2020-08-22 22:48:50,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4170 states to 4170 states and 4620 transitions. [2020-08-22 22:48:50,006 INFO L78 Accepts]: Start accepts. Automaton has 4170 states and 4620 transitions. Word has length 439 [2020-08-22 22:48:50,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:48:50,007 INFO L479 AbstractCegarLoop]: Abstraction has 4170 states and 4620 transitions. [2020-08-22 22:48:50,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 22:48:50,007 INFO L276 IsEmpty]: Start isEmpty. Operand 4170 states and 4620 transitions. [2020-08-22 22:48:50,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2020-08-22 22:48:50,017 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:48:50,018 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-08-22 22:48:50,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 22:48:50,018 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:48:50,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:48:50,019 INFO L82 PathProgramCache]: Analyzing trace with hash -105143810, now seen corresponding path program 1 times [2020-08-22 22:48:50,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:48:50,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69419579] [2020-08-22 22:48:50,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:48:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:50,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:48:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:50,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:48:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:50,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-22 22:48:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:50,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-22 22:48:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:50,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-08-22 22:48:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 655 backedges. 269 proven. 313 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-08-22 22:48:50,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69419579] [2020-08-22 22:48:50,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:48:50,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-22 22:48:50,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300078728] [2020-08-22 22:48:50,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 22:48:50,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:48:50,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 22:48:50,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-08-22 22:48:50,736 INFO L87 Difference]: Start difference. First operand 4170 states and 4620 transitions. Second operand 17 states. [2020-08-22 22:48:58,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:48:58,443 INFO L93 Difference]: Finished difference Result 11438 states and 12868 transitions. [2020-08-22 22:48:58,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-08-22 22:48:58,444 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 457 [2020-08-22 22:48:58,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:48:58,476 INFO L225 Difference]: With dead ends: 11438 [2020-08-22 22:48:58,476 INFO L226 Difference]: Without dead ends: 7438 [2020-08-22 22:48:58,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1233 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1073, Invalid=3087, Unknown=0, NotChecked=0, Total=4160 [2020-08-22 22:48:58,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7438 states. [2020-08-22 22:48:59,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7438 to 6394. [2020-08-22 22:48:59,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6394 states. [2020-08-22 22:48:59,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6394 states to 6394 states and 7212 transitions. [2020-08-22 22:48:59,358 INFO L78 Accepts]: Start accepts. Automaton has 6394 states and 7212 transitions. Word has length 457 [2020-08-22 22:48:59,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:48:59,359 INFO L479 AbstractCegarLoop]: Abstraction has 6394 states and 7212 transitions. [2020-08-22 22:48:59,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 22:48:59,359 INFO L276 IsEmpty]: Start isEmpty. Operand 6394 states and 7212 transitions. [2020-08-22 22:48:59,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2020-08-22 22:48:59,371 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:48:59,371 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-08-22 22:48:59,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 22:48:59,372 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:48:59,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:48:59,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1514920956, now seen corresponding path program 1 times [2020-08-22 22:48:59,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:48:59,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317915305] [2020-08-22 22:48:59,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:48:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:59,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:48:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:59,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:48:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:59,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-22 22:48:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:59,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 22:48:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:59,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2020-08-22 22:48:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:48:59,769 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 345 proven. 73 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2020-08-22 22:48:59,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317915305] [2020-08-22 22:48:59,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:48:59,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 22:48:59,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569762668] [2020-08-22 22:48:59,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 22:48:59,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:48:59,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 22:48:59,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:48:59,772 INFO L87 Difference]: Start difference. First operand 6394 states and 7212 transitions. Second operand 7 states. [2020-08-22 22:49:02,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:49:02,159 INFO L93 Difference]: Finished difference Result 13108 states and 14871 transitions. [2020-08-22 22:49:02,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 22:49:02,159 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 467 [2020-08-22 22:49:02,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:49:02,187 INFO L225 Difference]: With dead ends: 13108 [2020-08-22 22:49:02,188 INFO L226 Difference]: Without dead ends: 6884 [2020-08-22 22:49:02,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-08-22 22:49:02,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6884 states. [2020-08-22 22:49:03,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6884 to 6234. [2020-08-22 22:49:03,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6234 states. [2020-08-22 22:49:03,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6234 states to 6234 states and 6997 transitions. [2020-08-22 22:49:03,321 INFO L78 Accepts]: Start accepts. Automaton has 6234 states and 6997 transitions. Word has length 467 [2020-08-22 22:49:03,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:49:03,322 INFO L479 AbstractCegarLoop]: Abstraction has 6234 states and 6997 transitions. [2020-08-22 22:49:03,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 22:49:03,322 INFO L276 IsEmpty]: Start isEmpty. Operand 6234 states and 6997 transitions. [2020-08-22 22:49:03,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-08-22 22:49:03,335 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:49:03,335 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-08-22 22:49:03,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 22:49:03,336 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:49:03,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:49:03,336 INFO L82 PathProgramCache]: Analyzing trace with hash 2144729296, now seen corresponding path program 1 times [2020-08-22 22:49:03,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:49:03,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515507973] [2020-08-22 22:49:03,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:49:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:03,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:49:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:03,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:49:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:03,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 22:49:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:03,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 22:49:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:03,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-08-22 22:49:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:03,787 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 280 proven. 149 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2020-08-22 22:49:03,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515507973] [2020-08-22 22:49:03,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:49:03,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 22:49:03,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467155719] [2020-08-22 22:49:03,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 22:49:03,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:49:03,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 22:49:03,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:49:03,789 INFO L87 Difference]: Start difference. First operand 6234 states and 6997 transitions. Second operand 7 states. [2020-08-22 22:49:06,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:49:06,292 INFO L93 Difference]: Finished difference Result 11837 states and 13329 transitions. [2020-08-22 22:49:06,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 22:49:06,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 476 [2020-08-22 22:49:06,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:49:06,312 INFO L225 Difference]: With dead ends: 11837 [2020-08-22 22:49:06,313 INFO L226 Difference]: Without dead ends: 5773 [2020-08-22 22:49:06,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 22:49:06,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5773 states. [2020-08-22 22:49:07,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5773 to 5753. [2020-08-22 22:49:07,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5753 states. [2020-08-22 22:49:07,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 6285 transitions. [2020-08-22 22:49:07,253 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 6285 transitions. Word has length 476 [2020-08-22 22:49:07,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:49:07,254 INFO L479 AbstractCegarLoop]: Abstraction has 5753 states and 6285 transitions. [2020-08-22 22:49:07,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 22:49:07,254 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 6285 transitions. [2020-08-22 22:49:07,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2020-08-22 22:49:07,264 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:49:07,264 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:49:07,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 22:49:07,265 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:49:07,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:49:07,265 INFO L82 PathProgramCache]: Analyzing trace with hash 806004306, now seen corresponding path program 1 times [2020-08-22 22:49:07,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:49:07,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571445888] [2020-08-22 22:49:07,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:49:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:07,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:49:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:07,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:49:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:07,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-22 22:49:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:07,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-08-22 22:49:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:07,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-08-22 22:49:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 45 proven. 191 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2020-08-22 22:49:07,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571445888] [2020-08-22 22:49:07,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:49:07,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 22:49:07,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453140854] [2020-08-22 22:49:07,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 22:49:07,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:49:07,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 22:49:07,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-08-22 22:49:07,843 INFO L87 Difference]: Start difference. First operand 5753 states and 6285 transitions. Second operand 14 states. [2020-08-22 22:49:14,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:49:14,019 INFO L93 Difference]: Finished difference Result 15173 states and 16662 transitions. [2020-08-22 22:49:14,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 22:49:14,020 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 489 [2020-08-22 22:49:14,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:49:14,056 INFO L225 Difference]: With dead ends: 15173 [2020-08-22 22:49:14,056 INFO L226 Difference]: Without dead ends: 9590 [2020-08-22 22:49:14,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=460, Unknown=0, NotChecked=0, Total=650 [2020-08-22 22:49:14,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9590 states. [2020-08-22 22:49:15,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9590 to 7629. [2020-08-22 22:49:15,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7629 states. [2020-08-22 22:49:15,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7629 states to 7629 states and 8388 transitions. [2020-08-22 22:49:15,186 INFO L78 Accepts]: Start accepts. Automaton has 7629 states and 8388 transitions. Word has length 489 [2020-08-22 22:49:15,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:49:15,186 INFO L479 AbstractCegarLoop]: Abstraction has 7629 states and 8388 transitions. [2020-08-22 22:49:15,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 22:49:15,186 INFO L276 IsEmpty]: Start isEmpty. Operand 7629 states and 8388 transitions. [2020-08-22 22:49:15,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2020-08-22 22:49:15,197 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:49:15,197 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:49:15,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 22:49:15,198 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:49:15,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:49:15,198 INFO L82 PathProgramCache]: Analyzing trace with hash 264714014, now seen corresponding path program 1 times [2020-08-22 22:49:15,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:49:15,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356119755] [2020-08-22 22:49:15,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:49:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:15,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:49:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:15,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:49:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:15,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-22 22:49:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:15,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-08-22 22:49:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:15,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-08-22 22:49:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:16,169 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 123 proven. 113 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2020-08-22 22:49:16,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356119755] [2020-08-22 22:49:16,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:49:16,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 22:49:16,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702063673] [2020-08-22 22:49:16,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 22:49:16,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:49:16,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 22:49:16,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-08-22 22:49:16,171 INFO L87 Difference]: Start difference. First operand 7629 states and 8388 transitions. Second operand 19 states. [2020-08-22 22:49:24,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:49:24,289 INFO L93 Difference]: Finished difference Result 17061 states and 18780 transitions. [2020-08-22 22:49:24,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-22 22:49:24,289 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 501 [2020-08-22 22:49:24,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:49:24,327 INFO L225 Difference]: With dead ends: 17061 [2020-08-22 22:49:24,327 INFO L226 Difference]: Without dead ends: 9602 [2020-08-22 22:49:24,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=285, Invalid=905, Unknown=0, NotChecked=0, Total=1190 [2020-08-22 22:49:24,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9602 states. [2020-08-22 22:49:25,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9602 to 7629. [2020-08-22 22:49:25,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7629 states. [2020-08-22 22:49:25,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7629 states to 7629 states and 8388 transitions. [2020-08-22 22:49:25,304 INFO L78 Accepts]: Start accepts. Automaton has 7629 states and 8388 transitions. Word has length 501 [2020-08-22 22:49:25,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:49:25,305 INFO L479 AbstractCegarLoop]: Abstraction has 7629 states and 8388 transitions. [2020-08-22 22:49:25,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 22:49:25,305 INFO L276 IsEmpty]: Start isEmpty. Operand 7629 states and 8388 transitions. [2020-08-22 22:49:25,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2020-08-22 22:49:25,317 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:49:25,317 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 22:49:25,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 22:49:25,318 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:49:25,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:49:25,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1163683084, now seen corresponding path program 1 times [2020-08-22 22:49:25,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:49:25,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189579316] [2020-08-22 22:49:25,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:49:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:25,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:49:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:25,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:49:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:25,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-22 22:49:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:25,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-22 22:49:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:25,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2020-08-22 22:49:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:49:26,231 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 403 proven. 232 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-08-22 22:49:26,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189579316] [2020-08-22 22:49:26,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:49:26,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-08-22 22:49:26,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786327813] [2020-08-22 22:49:26,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-22 22:49:26,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:49:26,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-22 22:49:26,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-08-22 22:49:26,233 INFO L87 Difference]: Start difference. First operand 7629 states and 8388 transitions. Second operand 20 states. [2020-08-22 22:49:34,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:49:34,136 INFO L93 Difference]: Finished difference Result 16378 states and 18017 transitions. [2020-08-22 22:49:34,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-08-22 22:49:34,137 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 507 [2020-08-22 22:49:34,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:49:34,145 INFO L225 Difference]: With dead ends: 16378 [2020-08-22 22:49:34,145 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 22:49:34,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=785, Invalid=2637, Unknown=0, NotChecked=0, Total=3422 [2020-08-22 22:49:34,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 22:49:34,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 22:49:34,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 22:49:34,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 22:49:34,164 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 507 [2020-08-22 22:49:34,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:49:34,164 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 22:49:34,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-22 22:49:34,165 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 22:49:34,165 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 22:49:34,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 22:49:34,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 22:49:39,630 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2020-08-22 22:49:43,066 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 99 [2020-08-22 22:49:45,483 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 442 DAG size of output: 350 [2020-08-22 22:49:45,950 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 442 DAG size of output: 350 [2020-08-22 22:49:46,409 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 442 DAG size of output: 350 [2020-08-22 22:49:57,946 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 442 DAG size of output: 350 [2020-08-22 22:50:54,722 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 442 DAG size of output: 350 [2020-08-22 22:51:34,113 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 441 DAG size of output: 349 [2020-08-22 22:51:34,568 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 441 DAG size of output: 349 [2020-08-22 22:51:35,025 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 441 DAG size of output: 349 [2020-08-22 22:51:35,490 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 442 DAG size of output: 350 [2020-08-22 22:51:35,645 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 143 [2020-08-22 22:51:38,915 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 143 [2020-08-22 22:51:41,112 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 143 [2020-08-22 22:51:44,271 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 165 [2020-08-22 22:51:44,493 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 143 [2020-08-22 22:52:20,518 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 442 DAG size of output: 350 [2020-08-22 22:52:31,769 WARN L193 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 357 DAG size of output: 59 [2020-08-22 22:52:34,221 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 357 DAG size of output: 78 [2020-08-22 22:52:36,290 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 367 DAG size of output: 61 [2020-08-22 22:52:38,191 WARN L193 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 339 DAG size of output: 61 [2020-08-22 22:52:40,114 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 343 DAG size of output: 60 [2020-08-22 22:52:42,203 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 351 DAG size of output: 64 [2020-08-22 22:52:46,019 WARN L193 SmtUtils]: Spent 3.80 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 22:52:48,204 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 352 DAG size of output: 67 [2020-08-22 22:52:50,486 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 364 DAG size of output: 70 [2020-08-22 22:52:52,600 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 353 DAG size of output: 73 [2020-08-22 22:52:56,425 WARN L193 SmtUtils]: Spent 3.81 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 22:53:00,270 WARN L193 SmtUtils]: Spent 3.83 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 22:53:02,931 WARN L193 SmtUtils]: Spent 2.65 s on a formula simplification. DAG size of input: 358 DAG size of output: 78 [2020-08-22 22:53:04,938 WARN L193 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 363 DAG size of output: 65 [2020-08-22 22:53:07,326 WARN L193 SmtUtils]: Spent 2.37 s on a formula simplification. DAG size of input: 375 DAG size of output: 69 [2020-08-22 22:53:09,639 WARN L193 SmtUtils]: Spent 2.30 s on a formula simplification. DAG size of input: 387 DAG size of output: 63 [2020-08-22 22:53:12,133 WARN L193 SmtUtils]: Spent 2.48 s on a formula simplification. DAG size of input: 394 DAG size of output: 81 [2020-08-22 22:53:14,387 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 366 DAG size of output: 74 [2020-08-22 22:53:16,414 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 356 DAG size of output: 63 [2020-08-22 22:53:19,391 WARN L193 SmtUtils]: Spent 2.96 s on a formula simplification. DAG size of input: 446 DAG size of output: 77 [2020-08-22 22:53:21,463 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 344 DAG size of output: 57 [2020-08-22 22:53:23,687 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 369 DAG size of output: 61 [2020-08-22 22:53:26,020 WARN L193 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 359 DAG size of output: 78 [2020-08-22 22:53:28,209 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 349 DAG size of output: 63 [2020-08-22 22:53:30,497 WARN L193 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 385 DAG size of output: 61 [2020-08-22 22:53:33,036 WARN L193 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 361 DAG size of output: 93 [2020-08-22 22:53:34,896 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 334 DAG size of output: 53 [2020-08-22 22:53:36,758 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 334 DAG size of output: 53 [2020-08-22 22:53:38,654 WARN L193 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 334 DAG size of output: 53 [2020-08-22 22:53:41,028 WARN L193 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 352 DAG size of output: 80 [2020-08-22 22:53:43,368 WARN L193 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 386 DAG size of output: 60 [2020-08-22 22:53:47,290 WARN L193 SmtUtils]: Spent 3.91 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 22:53:51,685 WARN L193 SmtUtils]: Spent 4.38 s on a formula simplification. DAG size of input: 604 DAG size of output: 57 [2020-08-22 22:53:53,968 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 349 DAG size of output: 66 [2020-08-22 22:53:56,215 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 349 DAG size of output: 66 [2020-08-22 22:53:58,214 WARN L193 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 351 DAG size of output: 47 [2020-08-22 22:54:02,644 WARN L193 SmtUtils]: Spent 4.41 s on a formula simplification. DAG size of input: 604 DAG size of output: 57 [2020-08-22 22:54:04,608 WARN L193 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 351 DAG size of output: 47 [2020-08-22 22:54:09,048 WARN L193 SmtUtils]: Spent 4.43 s on a formula simplification. DAG size of input: 604 DAG size of output: 57 [2020-08-22 22:54:13,043 WARN L193 SmtUtils]: Spent 3.98 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 22:54:15,021 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 351 DAG size of output: 47 [2020-08-22 22:54:17,043 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 351 DAG size of output: 47 [2020-08-22 22:54:21,474 WARN L193 SmtUtils]: Spent 4.42 s on a formula simplification. DAG size of input: 604 DAG size of output: 57 [2020-08-22 22:54:25,949 WARN L193 SmtUtils]: Spent 4.46 s on a formula simplification. DAG size of input: 604 DAG size of output: 57 [2020-08-22 22:54:27,971 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 351 DAG size of output: 47 [2020-08-22 22:54:32,464 WARN L193 SmtUtils]: Spent 4.48 s on a formula simplification. DAG size of input: 604 DAG size of output: 57 [2020-08-22 22:54:36,948 WARN L193 SmtUtils]: Spent 4.47 s on a formula simplification. DAG size of input: 604 DAG size of output: 57 [2020-08-22 22:54:41,457 WARN L193 SmtUtils]: Spent 4.49 s on a formula simplification. DAG size of input: 604 DAG size of output: 57 [2020-08-22 22:54:43,864 WARN L193 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 349 DAG size of output: 66 [2020-08-22 22:54:45,930 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 351 DAG size of output: 47 [2020-08-22 22:54:47,991 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 351 DAG size of output: 47 [2020-08-22 22:54:52,505 WARN L193 SmtUtils]: Spent 4.50 s on a formula simplification. DAG size of input: 604 DAG size of output: 57 [2020-08-22 22:54:54,550 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 351 DAG size of output: 47 [2020-08-22 22:54:59,143 WARN L193 SmtUtils]: Spent 4.58 s on a formula simplification. DAG size of input: 604 DAG size of output: 57 [2020-08-22 22:55:01,194 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 334 DAG size of output: 53 [2020-08-22 22:55:04,045 WARN L193 SmtUtils]: Spent 2.84 s on a formula simplification. DAG size of input: 365 DAG size of output: 84 [2020-08-22 22:55:08,214 WARN L193 SmtUtils]: Spent 4.16 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 22:55:12,542 WARN L193 SmtUtils]: Spent 4.31 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 22:55:16,813 WARN L193 SmtUtils]: Spent 4.26 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 22:55:19,513 WARN L193 SmtUtils]: Spent 2.69 s on a formula simplification. DAG size of input: 357 DAG size of output: 78 [2020-08-22 22:55:23,774 WARN L193 SmtUtils]: Spent 4.25 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 22:55:28,083 WARN L193 SmtUtils]: Spent 4.29 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 22:55:30,304 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 358 DAG size of output: 62 [2020-08-22 22:55:32,811 WARN L193 SmtUtils]: Spent 2.49 s on a formula simplification. DAG size of input: 381 DAG size of output: 65 [2020-08-22 22:55:35,222 WARN L193 SmtUtils]: Spent 2.40 s on a formula simplification. DAG size of input: 363 DAG size of output: 64 [2020-08-22 22:55:37,550 WARN L193 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 352 DAG size of output: 66 [2020-08-22 22:55:39,911 WARN L193 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 351 DAG size of output: 62 [2020-08-22 22:55:44,076 WARN L193 SmtUtils]: Spent 4.15 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 22:55:48,197 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 22:55:50,744 WARN L193 SmtUtils]: Spent 2.54 s on a formula simplification. DAG size of input: 358 DAG size of output: 79 [2020-08-22 22:55:54,996 WARN L193 SmtUtils]: Spent 4.24 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 22:55:57,443 WARN L193 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 351 DAG size of output: 66 [2020-08-22 22:56:00,403 WARN L193 SmtUtils]: Spent 2.95 s on a formula simplification. DAG size of input: 373 DAG size of output: 81 [2020-08-22 22:56:02,600 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 342 DAG size of output: 57 [2020-08-22 22:56:05,076 WARN L193 SmtUtils]: Spent 2.46 s on a formula simplification. DAG size of input: 355 DAG size of output: 61 [2020-08-22 22:56:09,343 WARN L193 SmtUtils]: Spent 4.25 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 22:56:12,062 WARN L193 SmtUtils]: Spent 2.71 s on a formula simplification. DAG size of input: 367 DAG size of output: 78 [2020-08-22 22:56:16,369 WARN L193 SmtUtils]: Spent 4.29 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 22:56:18,650 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 375 DAG size of output: 66 [2020-08-22 22:56:21,912 WARN L193 SmtUtils]: Spent 3.25 s on a formula simplification. DAG size of input: 438 DAG size of output: 82 [2020-08-22 22:56:24,588 WARN L193 SmtUtils]: Spent 2.66 s on a formula simplification. DAG size of input: 378 DAG size of output: 67 [2020-08-22 22:56:26,988 WARN L193 SmtUtils]: Spent 2.39 s on a formula simplification. DAG size of input: 349 DAG size of output: 67 [2020-08-22 22:56:31,368 WARN L193 SmtUtils]: Spent 4.36 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 22:56:35,650 WARN L193 SmtUtils]: Spent 4.27 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 22:56:38,100 WARN L193 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 353 DAG size of output: 67 [2020-08-22 22:56:40,633 WARN L193 SmtUtils]: Spent 2.52 s on a formula simplification. DAG size of input: 390 DAG size of output: 61 [2020-08-22 22:56:43,200 WARN L193 SmtUtils]: Spent 2.55 s on a formula simplification. DAG size of input: 373 DAG size of output: 65 [2020-08-22 22:56:45,649 WARN L193 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 354 DAG size of output: 71 [2020-08-22 22:56:48,124 WARN L193 SmtUtils]: Spent 2.46 s on a formula simplification. DAG size of input: 358 DAG size of output: 72 [2020-08-22 22:56:50,304 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 345 DAG size of output: 64 [2020-08-22 22:56:54,669 WARN L193 SmtUtils]: Spent 4.35 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 22:56:56,833 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 351 DAG size of output: 47 [2020-08-22 22:57:01,752 WARN L193 SmtUtils]: Spent 4.90 s on a formula simplification. DAG size of input: 604 DAG size of output: 57 [2020-08-22 22:57:04,164 WARN L193 SmtUtils]: Spent 2.40 s on a formula simplification. DAG size of input: 344 DAG size of output: 61 [2020-08-22 22:57:08,552 WARN L193 SmtUtils]: Spent 4.37 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 22:57:11,164 WARN L193 SmtUtils]: Spent 2.60 s on a formula simplification. DAG size of input: 402 DAG size of output: 58 [2020-08-22 22:57:13,614 WARN L193 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 371 DAG size of output: 61 [2020-08-22 22:57:18,001 WARN L193 SmtUtils]: Spent 4.37 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 22:57:20,331 WARN L193 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 375 DAG size of output: 66 [2020-08-22 22:57:23,564 WARN L193 SmtUtils]: Spent 3.22 s on a formula simplification. DAG size of input: 417 DAG size of output: 82 [2020-08-22 22:57:25,933 WARN L193 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 357 DAG size of output: 62 [2020-08-22 22:57:28,699 WARN L193 SmtUtils]: Spent 2.75 s on a formula simplification. DAG size of input: 409 DAG size of output: 59 [2020-08-22 22:57:31,145 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 364 DAG size of output: 75 [2020-08-22 22:57:33,750 WARN L193 SmtUtils]: Spent 2.59 s on a formula simplification. DAG size of input: 357 DAG size of output: 73 [2020-08-22 22:57:36,048 WARN L193 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 353 DAG size of output: 61 [2020-08-22 22:57:40,447 WARN L193 SmtUtils]: Spent 4.38 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 22:57:42,710 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 350 DAG size of output: 62 [2020-08-22 22:57:45,113 WARN L193 SmtUtils]: Spent 2.39 s on a formula simplification. DAG size of input: 372 DAG size of output: 59 [2020-08-22 22:57:49,568 WARN L193 SmtUtils]: Spent 4.44 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 22:57:53,923 WARN L193 SmtUtils]: Spent 4.33 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 22:57:56,035 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 351 DAG size of output: 47 [2020-08-22 22:57:58,450 WARN L193 SmtUtils]: Spent 2.40 s on a formula simplification. DAG size of input: 358 DAG size of output: 68 [2020-08-22 22:58:01,029 WARN L193 SmtUtils]: Spent 2.57 s on a formula simplification. DAG size of input: 349 DAG size of output: 66 [2020-08-22 22:58:03,460 WARN L193 SmtUtils]: Spent 2.42 s on a formula simplification. DAG size of input: 359 DAG size of output: 65 [2020-08-22 22:58:05,918 WARN L193 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 360 DAG size of output: 62 [2020-08-22 22:58:09,379 WARN L193 SmtUtils]: Spent 3.45 s on a formula simplification. DAG size of input: 446 DAG size of output: 77 [2020-08-22 22:58:12,088 WARN L193 SmtUtils]: Spent 2.70 s on a formula simplification. DAG size of input: 355 DAG size of output: 76 [2020-08-22 22:58:14,526 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 356 DAG size of output: 67 [2020-08-22 22:58:18,649 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 458 DAG size of output: 66 [2020-08-22 22:58:23,622 WARN L193 SmtUtils]: Spent 4.96 s on a formula simplification. DAG size of input: 604 DAG size of output: 57 [2020-08-22 22:58:28,671 WARN L193 SmtUtils]: Spent 5.03 s on a formula simplification. DAG size of input: 604 DAG size of output: 57 [2020-08-22 22:58:31,251 WARN L193 SmtUtils]: Spent 2.57 s on a formula simplification. DAG size of input: 349 DAG size of output: 66 [2020-08-22 22:58:33,527 WARN L193 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 351 DAG size of output: 47 [2020-08-22 22:58:36,223 WARN L193 SmtUtils]: Spent 2.68 s on a formula simplification. DAG size of input: 349 DAG size of output: 66 [2020-08-22 22:58:41,179 WARN L193 SmtUtils]: Spent 4.94 s on a formula simplification. DAG size of input: 604 DAG size of output: 57 [2020-08-22 22:58:43,484 WARN L193 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 351 DAG size of output: 47 [2020-08-22 22:58:48,522 WARN L193 SmtUtils]: Spent 5.02 s on a formula simplification. DAG size of input: 604 DAG size of output: 57 [2020-08-22 22:58:53,452 WARN L193 SmtUtils]: Spent 4.91 s on a formula simplification. DAG size of input: 604 DAG size of output: 57 [2020-08-22 22:58:56,091 WARN L193 SmtUtils]: Spent 2.63 s on a formula simplification. DAG size of input: 356 DAG size of output: 67 [2020-08-22 22:58:58,558 WARN L193 SmtUtils]: Spent 2.46 s on a formula simplification. DAG size of input: 359 DAG size of output: 63 [2020-08-22 22:59:00,929 WARN L193 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 354 DAG size of output: 63 [2020-08-22 22:59:05,573 WARN L193 SmtUtils]: Spent 4.63 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 22:59:08,142 WARN L193 SmtUtils]: Spent 2.56 s on a formula simplification. DAG size of input: 362 DAG size of output: 65 [2020-08-22 22:59:10,496 WARN L193 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 351 DAG size of output: 62 [2020-08-22 22:59:13,091 WARN L193 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 362 DAG size of output: 68 [2020-08-22 22:59:15,750 WARN L193 SmtUtils]: Spent 2.62 s on a formula simplification. DAG size of input: 356 DAG size of output: 77 [2020-08-22 22:59:18,449 WARN L193 SmtUtils]: Spent 2.69 s on a formula simplification. DAG size of input: 385 DAG size of output: 63 [2020-08-22 22:59:21,257 WARN L193 SmtUtils]: Spent 2.80 s on a formula simplification. DAG size of input: 358 DAG size of output: 79 [2020-08-22 22:59:26,018 WARN L193 SmtUtils]: Spent 4.75 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 22:59:29,422 WARN L193 SmtUtils]: Spent 3.39 s on a formula simplification. DAG size of input: 417 DAG size of output: 82 [2020-08-22 22:59:31,943 WARN L193 SmtUtils]: Spent 2.51 s on a formula simplification. DAG size of input: 379 DAG size of output: 59 [2020-08-22 22:59:34,861 WARN L193 SmtUtils]: Spent 2.91 s on a formula simplification. DAG size of input: 369 DAG size of output: 76 [2020-08-22 22:59:38,644 WARN L193 SmtUtils]: Spent 3.77 s on a formula simplification. DAG size of input: 460 DAG size of output: 71 [2020-08-22 22:59:41,115 WARN L193 SmtUtils]: Spent 2.46 s on a formula simplification. DAG size of input: 341 DAG size of output: 59 [2020-08-22 22:59:43,594 WARN L193 SmtUtils]: Spent 2.47 s on a formula simplification. DAG size of input: 362 DAG size of output: 59 [2020-08-22 22:59:48,443 WARN L193 SmtUtils]: Spent 4.84 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 22:59:53,180 WARN L193 SmtUtils]: Spent 4.72 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 22:59:57,919 WARN L193 SmtUtils]: Spent 4.73 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 23:00:02,797 WARN L193 SmtUtils]: Spent 4.86 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 23:00:05,784 WARN L193 SmtUtils]: Spent 2.98 s on a formula simplification. DAG size of input: 364 DAG size of output: 63 [2020-08-22 23:00:10,635 WARN L193 SmtUtils]: Spent 4.84 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 23:00:13,321 WARN L193 SmtUtils]: Spent 2.68 s on a formula simplification. DAG size of input: 357 DAG size of output: 57 [2020-08-22 23:00:15,805 WARN L193 SmtUtils]: Spent 2.47 s on a formula simplification. DAG size of input: 373 DAG size of output: 60 [2020-08-22 23:00:18,943 WARN L193 SmtUtils]: Spent 3.12 s on a formula simplification. DAG size of input: 392 DAG size of output: 62 [2020-08-22 23:00:23,877 WARN L193 SmtUtils]: Spent 4.92 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 23:00:26,681 WARN L193 SmtUtils]: Spent 2.79 s on a formula simplification. DAG size of input: 354 DAG size of output: 74 [2020-08-22 23:00:31,500 WARN L193 SmtUtils]: Spent 4.80 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 23:00:36,282 WARN L193 SmtUtils]: Spent 4.77 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 23:00:38,870 WARN L193 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 359 DAG size of output: 59 [2020-08-22 23:00:43,729 WARN L193 SmtUtils]: Spent 4.84 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 23:00:46,493 WARN L193 SmtUtils]: Spent 2.75 s on a formula simplification. DAG size of input: 357 DAG size of output: 73 [2020-08-22 23:00:49,649 WARN L193 SmtUtils]: Spent 3.14 s on a formula simplification. DAG size of input: 361 DAG size of output: 92 [2020-08-22 23:00:52,377 WARN L193 SmtUtils]: Spent 2.72 s on a formula simplification. DAG size of input: 352 DAG size of output: 67 [2020-08-22 23:00:57,330 WARN L193 SmtUtils]: Spent 4.94 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 23:01:00,176 WARN L193 SmtUtils]: Spent 2.83 s on a formula simplification. DAG size of input: 379 DAG size of output: 59 [2020-08-22 23:01:02,838 WARN L193 SmtUtils]: Spent 2.65 s on a formula simplification. DAG size of input: 339 DAG size of output: 59 [2020-08-22 23:01:07,731 WARN L193 SmtUtils]: Spent 4.88 s on a formula simplification. DAG size of input: 594 DAG size of output: 65 [2020-08-22 23:01:11,621 WARN L193 SmtUtils]: Spent 3.88 s on a formula simplification. DAG size of input: 438 DAG size of output: 82 [2020-08-22 23:01:14,709 WARN L193 SmtUtils]: Spent 3.08 s on a formula simplification. DAG size of input: 369 DAG size of output: 76 [2020-08-22 23:01:17,434 WARN L193 SmtUtils]: Spent 2.71 s on a formula simplification. DAG size of input: 367 DAG size of output: 62