/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:53:13,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:53:13,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:53:13,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:53:13,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:53:13,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:53:13,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:53:13,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:53:13,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:53:13,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:53:13,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:53:13,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:53:13,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:53:13,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:53:13,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:53:13,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:53:13,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:53:13,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:53:13,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:53:13,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:53:13,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:53:13,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:53:13,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:53:13,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:53:13,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 13:53:13,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:53:13,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:53:13,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:53:13,273 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:53:13,298 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:53:13,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:53:13,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:53:13,305 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:53:13,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:53:13,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:53:13,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:53:13,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:53:13,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:53:13,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:53:13,306 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:53:13,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:53:13,306 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:53:13,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:53:13,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:53:13,307 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:53:13,308 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:53:13,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:53:13,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:53:13,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:53:13,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:53:13,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:53:13,310 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:53:13,592 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:53:13,608 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:53:13,612 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:53:13,614 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:53:13,615 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:53:13,615 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label24.c [2020-07-07 13:53:13,688 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8d09c5b9/d7e8bc0992d142a08a95857485cdd924/FLAG23f64bcb3 [2020-07-07 13:53:14,336 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:53:14,336 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label24.c [2020-07-07 13:53:14,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8d09c5b9/d7e8bc0992d142a08a95857485cdd924/FLAG23f64bcb3 [2020-07-07 13:53:14,532 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8d09c5b9/d7e8bc0992d142a08a95857485cdd924 [2020-07-07 13:53:14,541 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:53:14,543 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:53:14,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:53:14,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:53:14,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:53:14,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:53:14" (1/1) ... [2020-07-07 13:53:14,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38b20f67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:53:14, skipping insertion in model container [2020-07-07 13:53:14,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:53:14" (1/1) ... [2020-07-07 13:53:14,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:53:14,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:53:15,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:53:15,214 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:53:15,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:53:15,413 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:53:15,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:53:15 WrapperNode [2020-07-07 13:53:15,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:53:15,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:53:15,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:53:15,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:53:15,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:53:15" (1/1) ... [2020-07-07 13:53:15,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:53:15" (1/1) ... [2020-07-07 13:53:15,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:53:15" (1/1) ... [2020-07-07 13:53:15,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:53:15" (1/1) ... [2020-07-07 13:53:15,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:53:15" (1/1) ... [2020-07-07 13:53:15,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:53:15" (1/1) ... [2020-07-07 13:53:15,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:53:15" (1/1) ... [2020-07-07 13:53:15,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:53:15,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:53:15,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:53:15,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:53:15,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:53:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:53:15,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:53:15,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:53:15,656 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-07 13:53:15,656 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:53:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-07 13:53:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:53:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:53:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-07 13:53:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:53:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:53:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:53:17,502 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:53:17,503 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 13:53:17,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:53:17 BoogieIcfgContainer [2020-07-07 13:53:17,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:53:17,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:53:17,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:53:17,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:53:17,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:53:14" (1/3) ... [2020-07-07 13:53:17,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5ccb96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:53:17, skipping insertion in model container [2020-07-07 13:53:17,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:53:15" (2/3) ... [2020-07-07 13:53:17,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5ccb96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:53:17, skipping insertion in model container [2020-07-07 13:53:17,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:53:17" (3/3) ... [2020-07-07 13:53:17,522 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label24.c [2020-07-07 13:53:17,535 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:53:17,553 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:53:17,570 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:53:17,599 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:53:17,600 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:53:17,600 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:53:17,600 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:53:17,601 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:53:17,601 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:53:17,601 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:53:17,601 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:53:17,638 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-07-07 13:53:17,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-07 13:53:17,656 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:53:17,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:53:17,658 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:53:17,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:53:17,663 INFO L82 PathProgramCache]: Analyzing trace with hash -444760420, now seen corresponding path program 1 times [2020-07-07 13:53:17,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:53:17,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711116593] [2020-07-07 13:53:17,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:53:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:18,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:53:18,116 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:53:18,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711116593] [2020-07-07 13:53:18,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:53:18,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 13:53:18,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894820950] [2020-07-07 13:53:18,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 13:53:18,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:53:18,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 13:53:18,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:53:18,150 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 5 states. [2020-07-07 13:53:21,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:53:21,268 INFO L93 Difference]: Finished difference Result 1691 states and 2234 transitions. [2020-07-07 13:53:21,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:53:21,270 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-07-07 13:53:21,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:53:21,324 INFO L225 Difference]: With dead ends: 1691 [2020-07-07 13:53:21,324 INFO L226 Difference]: Without dead ends: 955 [2020-07-07 13:53:21,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:53:21,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2020-07-07 13:53:21,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 804. [2020-07-07 13:53:21,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 804 states. [2020-07-07 13:53:21,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1034 transitions. [2020-07-07 13:53:21,531 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1034 transitions. Word has length 60 [2020-07-07 13:53:21,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:53:21,532 INFO L479 AbstractCegarLoop]: Abstraction has 804 states and 1034 transitions. [2020-07-07 13:53:21,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 13:53:21,532 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1034 transitions. [2020-07-07 13:53:21,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-07-07 13:53:21,541 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:53:21,541 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, 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] [2020-07-07 13:53:21,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:53:21,542 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:53:21,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:53:21,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1537556143, now seen corresponding path program 1 times [2020-07-07 13:53:21,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:53:21,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388200774] [2020-07-07 13:53:21,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:53:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:21,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:53:21,978 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:53:21,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388200774] [2020-07-07 13:53:21,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:53:21,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 13:53:21,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846018273] [2020-07-07 13:53:21,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 13:53:21,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:53:21,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 13:53:21,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-07-07 13:53:21,982 INFO L87 Difference]: Start difference. First operand 804 states and 1034 transitions. Second operand 9 states. [2020-07-07 13:53:25,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:53:25,922 INFO L93 Difference]: Finished difference Result 2249 states and 2960 transitions. [2020-07-07 13:53:25,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 13:53:25,923 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 139 [2020-07-07 13:53:25,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:53:25,939 INFO L225 Difference]: With dead ends: 2249 [2020-07-07 13:53:25,939 INFO L226 Difference]: Without dead ends: 1460 [2020-07-07 13:53:25,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-07-07 13:53:25,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2020-07-07 13:53:26,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1192. [2020-07-07 13:53:26,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2020-07-07 13:53:26,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1558 transitions. [2020-07-07 13:53:26,115 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1558 transitions. Word has length 139 [2020-07-07 13:53:26,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:53:26,119 INFO L479 AbstractCegarLoop]: Abstraction has 1192 states and 1558 transitions. [2020-07-07 13:53:26,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 13:53:26,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1558 transitions. [2020-07-07 13:53:26,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-07-07 13:53:26,131 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:53:26,135 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:53:26,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:53:26,136 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:53:26,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:53:26,137 INFO L82 PathProgramCache]: Analyzing trace with hash -681557324, now seen corresponding path program 1 times [2020-07-07 13:53:26,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:53:26,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127161672] [2020-07-07 13:53:26,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:53:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:26,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:53:26,408 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:53:26,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127161672] [2020-07-07 13:53:26,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:53:26,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 13:53:26,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152198765] [2020-07-07 13:53:26,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 13:53:26,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:53:26,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 13:53:26,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:53:26,411 INFO L87 Difference]: Start difference. First operand 1192 states and 1558 transitions. Second operand 8 states. [2020-07-07 13:53:29,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:53:29,548 INFO L93 Difference]: Finished difference Result 3243 states and 4499 transitions. [2020-07-07 13:53:29,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-07 13:53:29,555 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 139 [2020-07-07 13:53:29,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:53:29,581 INFO L225 Difference]: With dead ends: 3243 [2020-07-07 13:53:29,585 INFO L226 Difference]: Without dead ends: 2066 [2020-07-07 13:53:29,593 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 [2020-07-07 13:53:29,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2020-07-07 13:53:29,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 1978. [2020-07-07 13:53:29,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1978 states. [2020-07-07 13:53:29,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 2604 transitions. [2020-07-07 13:53:29,778 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 2604 transitions. Word has length 139 [2020-07-07 13:53:29,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:53:29,779 INFO L479 AbstractCegarLoop]: Abstraction has 1978 states and 2604 transitions. [2020-07-07 13:53:29,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 13:53:29,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 2604 transitions. [2020-07-07 13:53:29,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-07 13:53:29,781 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:53:29,781 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:53:29,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:53:29,782 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:53:29,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:53:29,782 INFO L82 PathProgramCache]: Analyzing trace with hash 791250278, now seen corresponding path program 1 times [2020-07-07 13:53:29,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:53:29,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006537728] [2020-07-07 13:53:29,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:53:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:30,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:53:30,001 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:53:30,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006537728] [2020-07-07 13:53:30,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:53:30,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 13:53:30,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344196977] [2020-07-07 13:53:30,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 13:53:30,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:53:30,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 13:53:30,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-07-07 13:53:30,004 INFO L87 Difference]: Start difference. First operand 1978 states and 2604 transitions. Second operand 9 states. [2020-07-07 13:53:33,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:53:33,535 INFO L93 Difference]: Finished difference Result 5031 states and 7125 transitions. [2020-07-07 13:53:33,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-07 13:53:33,536 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 142 [2020-07-07 13:53:33,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:53:33,592 INFO L225 Difference]: With dead ends: 5031 [2020-07-07 13:53:33,592 INFO L226 Difference]: Without dead ends: 3068 [2020-07-07 13:53:33,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-07-07 13:53:33,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2020-07-07 13:53:33,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 2432. [2020-07-07 13:53:33,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2432 states. [2020-07-07 13:53:34,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2432 states to 2432 states and 3157 transitions. [2020-07-07 13:53:34,072 INFO L78 Accepts]: Start accepts. Automaton has 2432 states and 3157 transitions. Word has length 142 [2020-07-07 13:53:34,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:53:34,073 INFO L479 AbstractCegarLoop]: Abstraction has 2432 states and 3157 transitions. [2020-07-07 13:53:34,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 13:53:34,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2432 states and 3157 transitions. [2020-07-07 13:53:34,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-07-07 13:53:34,075 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:53:34,075 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:53:34,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:53:34,076 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:53:34,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:53:34,077 INFO L82 PathProgramCache]: Analyzing trace with hash 355901312, now seen corresponding path program 1 times [2020-07-07 13:53:34,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:53:34,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491342402] [2020-07-07 13:53:34,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:53:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:34,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:34,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:53:34,552 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:53:34,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491342402] [2020-07-07 13:53:34,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:53:34,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-07 13:53:34,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014089684] [2020-07-07 13:53:34,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 13:53:34,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:53:34,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 13:53:34,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-07-07 13:53:34,555 INFO L87 Difference]: Start difference. First operand 2432 states and 3157 transitions. Second operand 12 states. [2020-07-07 13:53:38,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:53:38,941 INFO L93 Difference]: Finished difference Result 5550 states and 7192 transitions. [2020-07-07 13:53:38,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 13:53:38,943 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 166 [2020-07-07 13:53:38,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:53:38,969 INFO L225 Difference]: With dead ends: 5550 [2020-07-07 13:53:38,969 INFO L226 Difference]: Without dead ends: 3133 [2020-07-07 13:53:38,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2020-07-07 13:53:38,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3133 states. [2020-07-07 13:53:39,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3133 to 3061. [2020-07-07 13:53:39,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3061 states. [2020-07-07 13:53:39,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3061 states to 3061 states and 3863 transitions. [2020-07-07 13:53:39,255 INFO L78 Accepts]: Start accepts. Automaton has 3061 states and 3863 transitions. Word has length 166 [2020-07-07 13:53:39,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:53:39,256 INFO L479 AbstractCegarLoop]: Abstraction has 3061 states and 3863 transitions. [2020-07-07 13:53:39,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 13:53:39,256 INFO L276 IsEmpty]: Start isEmpty. Operand 3061 states and 3863 transitions. [2020-07-07 13:53:39,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-07-07 13:53:39,262 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:53:39,262 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-07 13:53:39,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 13:53:39,263 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:53:39,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:53:39,263 INFO L82 PathProgramCache]: Analyzing trace with hash -832039479, now seen corresponding path program 1 times [2020-07-07 13:53:39,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:53:39,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745557704] [2020-07-07 13:53:39,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:53:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:40,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:53:40,059 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:53:40,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745557704] [2020-07-07 13:53:40,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:53:40,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-07 13:53:40,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103797329] [2020-07-07 13:53:40,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 13:53:40,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:53:40,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 13:53:40,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-07-07 13:53:40,062 INFO L87 Difference]: Start difference. First operand 3061 states and 3863 transitions. Second operand 12 states. [2020-07-07 13:53:44,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:53:44,945 INFO L93 Difference]: Finished difference Result 7235 states and 9030 transitions. [2020-07-07 13:53:44,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-07 13:53:44,946 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 285 [2020-07-07 13:53:44,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:53:44,979 INFO L225 Difference]: With dead ends: 7235 [2020-07-07 13:53:44,980 INFO L226 Difference]: Without dead ends: 4189 [2020-07-07 13:53:44,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2020-07-07 13:53:44,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2020-07-07 13:53:45,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 4090. [2020-07-07 13:53:45,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4090 states. [2020-07-07 13:53:45,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4090 states to 4090 states and 4973 transitions. [2020-07-07 13:53:45,497 INFO L78 Accepts]: Start accepts. Automaton has 4090 states and 4973 transitions. Word has length 285 [2020-07-07 13:53:45,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:53:45,504 INFO L479 AbstractCegarLoop]: Abstraction has 4090 states and 4973 transitions. [2020-07-07 13:53:45,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 13:53:45,505 INFO L276 IsEmpty]: Start isEmpty. Operand 4090 states and 4973 transitions. [2020-07-07 13:53:45,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2020-07-07 13:53:45,513 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:53:45,514 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:53:45,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 13:53:45,514 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:53:45,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:53:45,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1050709208, now seen corresponding path program 1 times [2020-07-07 13:53:45,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:53:45,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542796840] [2020-07-07 13:53:45,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:53:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:45,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:53:45,887 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:53:45,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542796840] [2020-07-07 13:53:45,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:53:45,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:53:45,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992629880] [2020-07-07 13:53:45,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:53:45,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:53:45,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:53:45,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:53:45,890 INFO L87 Difference]: Start difference. First operand 4090 states and 4973 transitions. Second operand 6 states. [2020-07-07 13:53:49,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:53:49,029 INFO L93 Difference]: Finished difference Result 9183 states and 11395 transitions. [2020-07-07 13:53:49,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 13:53:49,030 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 378 [2020-07-07 13:53:49,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:53:49,067 INFO L225 Difference]: With dead ends: 9183 [2020-07-07 13:53:49,067 INFO L226 Difference]: Without dead ends: 4492 [2020-07-07 13:53:49,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:53:49,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4492 states. [2020-07-07 13:53:49,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4492 to 2376. [2020-07-07 13:53:49,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2376 states. [2020-07-07 13:53:49,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2376 states to 2376 states and 2951 transitions. [2020-07-07 13:53:49,514 INFO L78 Accepts]: Start accepts. Automaton has 2376 states and 2951 transitions. Word has length 378 [2020-07-07 13:53:49,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:53:49,515 INFO L479 AbstractCegarLoop]: Abstraction has 2376 states and 2951 transitions. [2020-07-07 13:53:49,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:53:49,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2376 states and 2951 transitions. [2020-07-07 13:53:49,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2020-07-07 13:53:49,534 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:53:49,535 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:53:49,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 13:53:49,535 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:53:49,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:53:49,536 INFO L82 PathProgramCache]: Analyzing trace with hash -812819948, now seen corresponding path program 1 times [2020-07-07 13:53:49,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:53:49,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147420577] [2020-07-07 13:53:49,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:53:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:50,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:53:50,809 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:53:50,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147420577] [2020-07-07 13:53:50,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:53:50,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 13:53:50,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968693350] [2020-07-07 13:53:50,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 13:53:50,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:53:50,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 13:53:50,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-07-07 13:53:50,812 INFO L87 Difference]: Start difference. First operand 2376 states and 2951 transitions. Second operand 14 states. [2020-07-07 13:53:57,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:53:57,590 INFO L93 Difference]: Finished difference Result 5169 states and 6594 transitions. [2020-07-07 13:53:57,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-07-07 13:53:57,591 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 503 [2020-07-07 13:53:57,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:53:57,610 INFO L225 Difference]: With dead ends: 5169 [2020-07-07 13:53:57,610 INFO L226 Difference]: Without dead ends: 3190 [2020-07-07 13:53:57,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=526, Invalid=2024, Unknown=0, NotChecked=0, Total=2550 [2020-07-07 13:53:57,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2020-07-07 13:53:58,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 2960. [2020-07-07 13:53:58,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2960 states. [2020-07-07 13:53:58,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2960 states to 2960 states and 3677 transitions. [2020-07-07 13:53:58,093 INFO L78 Accepts]: Start accepts. Automaton has 2960 states and 3677 transitions. Word has length 503 [2020-07-07 13:53:58,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:53:58,094 INFO L479 AbstractCegarLoop]: Abstraction has 2960 states and 3677 transitions. [2020-07-07 13:53:58,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 13:53:58,095 INFO L276 IsEmpty]: Start isEmpty. Operand 2960 states and 3677 transitions. [2020-07-07 13:53:58,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2020-07-07 13:53:58,115 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:53:58,115 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:53:58,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 13:53:58,116 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:53:58,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:53:58,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1101951350, now seen corresponding path program 1 times [2020-07-07 13:53:58,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:53:58,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990041341] [2020-07-07 13:53:58,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:53:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:53:58,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:53:58,845 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:53:58,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990041341] [2020-07-07 13:53:58,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:53:58,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 13:53:58,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833665817] [2020-07-07 13:53:58,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 13:53:58,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:53:58,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 13:53:58,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-07-07 13:53:58,852 INFO L87 Difference]: Start difference. First operand 2960 states and 3677 transitions. Second operand 9 states. [2020-07-07 13:54:02,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:54:02,329 INFO L93 Difference]: Finished difference Result 6849 states and 8838 transitions. [2020-07-07 13:54:02,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-07 13:54:02,330 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 585 [2020-07-07 13:54:02,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:54:02,356 INFO L225 Difference]: With dead ends: 6849 [2020-07-07 13:54:02,356 INFO L226 Difference]: Without dead ends: 4286 [2020-07-07 13:54:02,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-07-07 13:54:02,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4286 states. [2020-07-07 13:54:02,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4286 to 4250. [2020-07-07 13:54:02,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4250 states. [2020-07-07 13:54:02,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4250 states to 4250 states and 5323 transitions. [2020-07-07 13:54:02,853 INFO L78 Accepts]: Start accepts. Automaton has 4250 states and 5323 transitions. Word has length 585 [2020-07-07 13:54:02,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:54:02,854 INFO L479 AbstractCegarLoop]: Abstraction has 4250 states and 5323 transitions. [2020-07-07 13:54:02,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 13:54:02,855 INFO L276 IsEmpty]: Start isEmpty. Operand 4250 states and 5323 transitions. [2020-07-07 13:54:02,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2020-07-07 13:54:02,868 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:54:02,869 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:54:02,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 13:54:02,869 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:54:02,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:54:02,870 INFO L82 PathProgramCache]: Analyzing trace with hash -523514443, now seen corresponding path program 1 times [2020-07-07 13:54:02,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:54:02,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511258344] [2020-07-07 13:54:02,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:54:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:04,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:54:04,628 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:54:04,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511258344] [2020-07-07 13:54:04,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:54:04,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-07-07 13:54:04,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254948214] [2020-07-07 13:54:04,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-07 13:54:04,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:54:04,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-07 13:54:04,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2020-07-07 13:54:04,630 INFO L87 Difference]: Start difference. First operand 4250 states and 5323 transitions. Second operand 18 states. [2020-07-07 13:54:12,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:54:12,831 INFO L93 Difference]: Finished difference Result 9239 states and 11584 transitions. [2020-07-07 13:54:12,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-07-07 13:54:12,834 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 586 [2020-07-07 13:54:12,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:54:12,860 INFO L225 Difference]: With dead ends: 9239 [2020-07-07 13:54:12,860 INFO L226 Difference]: Without dead ends: 4766 [2020-07-07 13:54:12,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=311, Invalid=1249, Unknown=0, NotChecked=0, Total=1560 [2020-07-07 13:54:12,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4766 states. [2020-07-07 13:54:13,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4766 to 4507. [2020-07-07 13:54:13,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4507 states. [2020-07-07 13:54:13,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4507 states to 4507 states and 5252 transitions. [2020-07-07 13:54:13,595 INFO L78 Accepts]: Start accepts. Automaton has 4507 states and 5252 transitions. Word has length 586 [2020-07-07 13:54:13,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:54:13,597 INFO L479 AbstractCegarLoop]: Abstraction has 4507 states and 5252 transitions. [2020-07-07 13:54:13,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-07 13:54:13,597 INFO L276 IsEmpty]: Start isEmpty. Operand 4507 states and 5252 transitions. [2020-07-07 13:54:13,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2020-07-07 13:54:13,609 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:54:13,610 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2020-07-07 13:54:13,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 13:54:13,610 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:54:13,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:54:13,611 INFO L82 PathProgramCache]: Analyzing trace with hash -37217483, now seen corresponding path program 1 times [2020-07-07 13:54:13,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:54:13,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37253283] [2020-07-07 13:54:13,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:54:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:15,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:54:15,877 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:54:15,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37253283] [2020-07-07 13:54:15,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:54:15,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-07-07 13:54:15,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898165406] [2020-07-07 13:54:15,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-07 13:54:15,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:54:15,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-07 13:54:15,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-07-07 13:54:15,880 INFO L87 Difference]: Start difference. First operand 4507 states and 5252 transitions. Second operand 17 states. [2020-07-07 13:54:23,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:54:23,978 INFO L93 Difference]: Finished difference Result 10382 states and 12196 transitions. [2020-07-07 13:54:23,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-07-07 13:54:23,979 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 646 [2020-07-07 13:54:23,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:54:24,010 INFO L225 Difference]: With dead ends: 10382 [2020-07-07 13:54:24,010 INFO L226 Difference]: Without dead ends: 6272 [2020-07-07 13:54:24,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=415, Invalid=1225, Unknown=0, NotChecked=0, Total=1640 [2020-07-07 13:54:24,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2020-07-07 13:54:24,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 6047. [2020-07-07 13:54:24,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6047 states. [2020-07-07 13:54:24,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6047 states to 6047 states and 7020 transitions. [2020-07-07 13:54:24,622 INFO L78 Accepts]: Start accepts. Automaton has 6047 states and 7020 transitions. Word has length 646 [2020-07-07 13:54:24,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:54:24,623 INFO L479 AbstractCegarLoop]: Abstraction has 6047 states and 7020 transitions. [2020-07-07 13:54:24,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-07 13:54:24,623 INFO L276 IsEmpty]: Start isEmpty. Operand 6047 states and 7020 transitions. [2020-07-07 13:54:24,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2020-07-07 13:54:24,632 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:54:24,633 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2020-07-07 13:54:24,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-07 13:54:24,634 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:54:24,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:54:24,634 INFO L82 PathProgramCache]: Analyzing trace with hash 327016294, now seen corresponding path program 1 times [2020-07-07 13:54:24,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:54:24,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143102572] [2020-07-07 13:54:24,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:54:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:26,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:54:26,608 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:54:26,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143102572] [2020-07-07 13:54:26,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:54:26,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-07-07 13:54:26,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898331217] [2020-07-07 13:54:26,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-07 13:54:26,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:54:26,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-07 13:54:26,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-07-07 13:54:26,611 INFO L87 Difference]: Start difference. First operand 6047 states and 7020 transitions. Second operand 18 states. [2020-07-07 13:54:34,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:54:34,531 INFO L93 Difference]: Finished difference Result 14639 states and 17396 transitions. [2020-07-07 13:54:34,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-07-07 13:54:34,532 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 650 [2020-07-07 13:54:34,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:54:34,568 INFO L225 Difference]: With dead ends: 14639 [2020-07-07 13:54:34,569 INFO L226 Difference]: Without dead ends: 8897 [2020-07-07 13:54:34,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=278, Invalid=1128, Unknown=0, NotChecked=0, Total=1406 [2020-07-07 13:54:34,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8897 states. [2020-07-07 13:54:35,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8897 to 8574. [2020-07-07 13:54:35,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8574 states. [2020-07-07 13:54:35,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8574 states to 8574 states and 10170 transitions. [2020-07-07 13:54:35,854 INFO L78 Accepts]: Start accepts. Automaton has 8574 states and 10170 transitions. Word has length 650 [2020-07-07 13:54:35,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:54:35,855 INFO L479 AbstractCegarLoop]: Abstraction has 8574 states and 10170 transitions. [2020-07-07 13:54:35,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-07 13:54:35,855 INFO L276 IsEmpty]: Start isEmpty. Operand 8574 states and 10170 transitions. [2020-07-07 13:54:35,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 863 [2020-07-07 13:54:35,868 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:54:35,869 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:54:35,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-07 13:54:35,870 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:54:35,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:54:35,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1424837101, now seen corresponding path program 1 times [2020-07-07 13:54:35,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:54:35,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190007758] [2020-07-07 13:54:35,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:54:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:37,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:54:37,786 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:54:37,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190007758] [2020-07-07 13:54:37,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:54:37,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-07 13:54:37,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46314852] [2020-07-07 13:54:37,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 13:54:37,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:54:37,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 13:54:37,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-07-07 13:54:37,788 INFO L87 Difference]: Start difference. First operand 8574 states and 10170 transitions. Second operand 12 states. [2020-07-07 13:54:45,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:54:45,671 INFO L93 Difference]: Finished difference Result 18244 states and 21732 transitions. [2020-07-07 13:54:45,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-07-07 13:54:45,672 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 862 [2020-07-07 13:54:45,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:54:45,713 INFO L225 Difference]: With dead ends: 18244 [2020-07-07 13:54:45,713 INFO L226 Difference]: Without dead ends: 9665 [2020-07-07 13:54:45,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=290, Invalid=1270, Unknown=0, NotChecked=0, Total=1560 [2020-07-07 13:54:45,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9665 states. [2020-07-07 13:54:46,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9665 to 9157. [2020-07-07 13:54:46,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9157 states. [2020-07-07 13:54:46,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9157 states to 9157 states and 10717 transitions. [2020-07-07 13:54:46,860 INFO L78 Accepts]: Start accepts. Automaton has 9157 states and 10717 transitions. Word has length 862 [2020-07-07 13:54:46,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:54:46,861 INFO L479 AbstractCegarLoop]: Abstraction has 9157 states and 10717 transitions. [2020-07-07 13:54:46,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 13:54:46,861 INFO L276 IsEmpty]: Start isEmpty. Operand 9157 states and 10717 transitions. [2020-07-07 13:54:46,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2020-07-07 13:54:46,872 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:54:46,872 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:54:46,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-07 13:54:46,873 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:54:46,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:54:46,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1498796944, now seen corresponding path program 1 times [2020-07-07 13:54:46,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:54:46,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544785508] [2020-07-07 13:54:46,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:54:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:48,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:54:48,868 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:54:48,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544785508] [2020-07-07 13:54:48,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:54:48,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-07 13:54:48,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935510121] [2020-07-07 13:54:48,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-07 13:54:48,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:54:48,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-07 13:54:48,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-07-07 13:54:48,870 INFO L87 Difference]: Start difference. First operand 9157 states and 10717 transitions. Second operand 15 states. [2020-07-07 13:54:55,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:54:55,615 INFO L93 Difference]: Finished difference Result 17909 states and 21036 transitions. [2020-07-07 13:54:55,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-07 13:54:55,617 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 878 [2020-07-07 13:54:55,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:54:55,651 INFO L225 Difference]: With dead ends: 17909 [2020-07-07 13:54:55,651 INFO L226 Difference]: Without dead ends: 8576 [2020-07-07 13:54:55,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=408, Invalid=1152, Unknown=0, NotChecked=0, Total=1560 [2020-07-07 13:54:55,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8576 states. [2020-07-07 13:54:56,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8576 to 8513. [2020-07-07 13:54:56,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8513 states. [2020-07-07 13:54:56,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8513 states to 8513 states and 9280 transitions. [2020-07-07 13:54:56,603 INFO L78 Accepts]: Start accepts. Automaton has 8513 states and 9280 transitions. Word has length 878 [2020-07-07 13:54:56,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:54:56,604 INFO L479 AbstractCegarLoop]: Abstraction has 8513 states and 9280 transitions. [2020-07-07 13:54:56,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-07 13:54:56,604 INFO L276 IsEmpty]: Start isEmpty. Operand 8513 states and 9280 transitions. [2020-07-07 13:54:56,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 950 [2020-07-07 13:54:56,617 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:54:56,618 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:54:56,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-07 13:54:56,618 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:54:56,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:54:56,619 INFO L82 PathProgramCache]: Analyzing trace with hash -705140446, now seen corresponding path program 1 times [2020-07-07 13:54:56,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:54:56,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110452859] [2020-07-07 13:54:56,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:54:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:54:58,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:54:58,219 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:54:58,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110452859] [2020-07-07 13:54:58,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:54:58,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-07-07 13:54:58,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164755655] [2020-07-07 13:54:58,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-07 13:54:58,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:54:58,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-07 13:54:58,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-07-07 13:54:58,221 INFO L87 Difference]: Start difference. First operand 8513 states and 9280 transitions. Second operand 17 states. [2020-07-07 13:55:02,866 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2020-07-07 13:55:12,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:55:12,480 INFO L93 Difference]: Finished difference Result 17986 states and 19613 transitions. [2020-07-07 13:55:12,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-07-07 13:55:12,481 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 949 [2020-07-07 13:55:12,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:55:12,516 INFO L225 Difference]: With dead ends: 17986 [2020-07-07 13:55:12,516 INFO L226 Difference]: Without dead ends: 9870 [2020-07-07 13:55:12,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1340 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=729, Invalid=3827, Unknown=0, NotChecked=0, Total=4556 [2020-07-07 13:55:12,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9870 states. [2020-07-07 13:55:13,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9870 to 8892. [2020-07-07 13:55:13,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8892 states. [2020-07-07 13:55:13,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8892 states to 8892 states and 9360 transitions. [2020-07-07 13:55:13,857 INFO L78 Accepts]: Start accepts. Automaton has 8892 states and 9360 transitions. Word has length 949 [2020-07-07 13:55:13,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:55:13,857 INFO L479 AbstractCegarLoop]: Abstraction has 8892 states and 9360 transitions. [2020-07-07 13:55:13,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-07 13:55:13,858 INFO L276 IsEmpty]: Start isEmpty. Operand 8892 states and 9360 transitions. [2020-07-07 13:55:13,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 999 [2020-07-07 13:55:13,869 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:55:13,869 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:55:13,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-07 13:55:13,870 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:55:13,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:55:13,870 INFO L82 PathProgramCache]: Analyzing trace with hash 2102089486, now seen corresponding path program 1 times [2020-07-07 13:55:13,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:55:13,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53897054] [2020-07-07 13:55:13,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:55:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:14,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:15,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:55:15,466 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:55:15,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53897054] [2020-07-07 13:55:15,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:55:15,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-07 13:55:15,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495592830] [2020-07-07 13:55:15,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 13:55:15,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:55:15,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 13:55:15,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-07-07 13:55:15,469 INFO L87 Difference]: Start difference. First operand 8892 states and 9360 transitions. Second operand 11 states. [2020-07-07 13:55:20,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:55:20,101 INFO L93 Difference]: Finished difference Result 20605 states and 22222 transitions. [2020-07-07 13:55:20,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-07 13:55:20,102 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 998 [2020-07-07 13:55:20,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:55:20,170 INFO L225 Difference]: With dead ends: 20605 [2020-07-07 13:55:20,171 INFO L226 Difference]: Without dead ends: 12110 [2020-07-07 13:55:20,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2020-07-07 13:55:20,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12110 states. [2020-07-07 13:55:21,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12110 to 11030. [2020-07-07 13:55:21,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11030 states. [2020-07-07 13:55:21,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11030 states to 11030 states and 11597 transitions. [2020-07-07 13:55:21,739 INFO L78 Accepts]: Start accepts. Automaton has 11030 states and 11597 transitions. Word has length 998 [2020-07-07 13:55:21,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:55:21,740 INFO L479 AbstractCegarLoop]: Abstraction has 11030 states and 11597 transitions. [2020-07-07 13:55:21,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 13:55:21,740 INFO L276 IsEmpty]: Start isEmpty. Operand 11030 states and 11597 transitions. [2020-07-07 13:55:21,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1106 [2020-07-07 13:55:21,753 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:55:21,754 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:55:21,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-07 13:55:21,754 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:55:21,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:55:21,755 INFO L82 PathProgramCache]: Analyzing trace with hash 143524116, now seen corresponding path program 1 times [2020-07-07 13:55:21,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:55:21,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734874861] [2020-07-07 13:55:21,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:55:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:23,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:55:23,104 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:55:23,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734874861] [2020-07-07 13:55:23,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:55:23,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 13:55:23,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022531363] [2020-07-07 13:55:23,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 13:55:23,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:55:23,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 13:55:23,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-07-07 13:55:23,106 INFO L87 Difference]: Start difference. First operand 11030 states and 11597 transitions. Second operand 9 states. [2020-07-07 13:55:26,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:55:26,596 INFO L93 Difference]: Finished difference Result 22832 states and 24020 transitions. [2020-07-07 13:55:26,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 13:55:26,597 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1105 [2020-07-07 13:55:26,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:55:26,631 INFO L225 Difference]: With dead ends: 22832 [2020-07-07 13:55:26,631 INFO L226 Difference]: Without dead ends: 12199 [2020-07-07 13:55:26,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-07-07 13:55:26,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12199 states. [2020-07-07 13:55:28,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12199 to 11046. [2020-07-07 13:55:28,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11046 states. [2020-07-07 13:55:28,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11046 states to 11046 states and 11614 transitions. [2020-07-07 13:55:28,023 INFO L78 Accepts]: Start accepts. Automaton has 11046 states and 11614 transitions. Word has length 1105 [2020-07-07 13:55:28,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:55:28,024 INFO L479 AbstractCegarLoop]: Abstraction has 11046 states and 11614 transitions. [2020-07-07 13:55:28,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 13:55:28,024 INFO L276 IsEmpty]: Start isEmpty. Operand 11046 states and 11614 transitions. [2020-07-07 13:55:28,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1191 [2020-07-07 13:55:28,038 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:55:28,039 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:55:28,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-07 13:55:28,039 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:55:28,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:55:28,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1554672207, now seen corresponding path program 1 times [2020-07-07 13:55:28,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:55:28,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167397221] [2020-07-07 13:55:28,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:55:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:29,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:55:29,762 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:55:29,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167397221] [2020-07-07 13:55:29,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:55:29,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-07 13:55:29,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338062015] [2020-07-07 13:55:29,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-07 13:55:29,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:55:29,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-07 13:55:29,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-07-07 13:55:29,765 INFO L87 Difference]: Start difference. First operand 11046 states and 11614 transitions. Second operand 13 states. [2020-07-07 13:55:36,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:55:36,694 INFO L93 Difference]: Finished difference Result 25704 states and 27123 transitions. [2020-07-07 13:55:36,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-07-07 13:55:36,695 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1190 [2020-07-07 13:55:36,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:55:36,737 INFO L225 Difference]: With dead ends: 25704 [2020-07-07 13:55:36,737 INFO L226 Difference]: Without dead ends: 15055 [2020-07-07 13:55:36,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=247, Invalid=745, Unknown=0, NotChecked=0, Total=992 [2020-07-07 13:55:36,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15055 states. [2020-07-07 13:55:38,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15055 to 13214. [2020-07-07 13:55:38,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13214 states. [2020-07-07 13:55:38,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13214 states to 13214 states and 13927 transitions. [2020-07-07 13:55:38,501 INFO L78 Accepts]: Start accepts. Automaton has 13214 states and 13927 transitions. Word has length 1190 [2020-07-07 13:55:38,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:55:38,502 INFO L479 AbstractCegarLoop]: Abstraction has 13214 states and 13927 transitions. [2020-07-07 13:55:38,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-07 13:55:38,502 INFO L276 IsEmpty]: Start isEmpty. Operand 13214 states and 13927 transitions. [2020-07-07 13:55:38,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1324 [2020-07-07 13:55:38,517 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:55:38,517 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-07-07 13:55:38,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-07 13:55:38,518 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:55:38,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:55:38,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1467662896, now seen corresponding path program 1 times [2020-07-07 13:55:38,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:55:38,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049309985] [2020-07-07 13:55:38,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:55:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:39,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:40,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:55:40,969 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:55:40,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049309985] [2020-07-07 13:55:40,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:55:40,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-07-07 13:55:40,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186427258] [2020-07-07 13:55:40,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-07 13:55:40,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:55:40,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-07 13:55:40,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-07-07 13:55:40,971 INFO L87 Difference]: Start difference. First operand 13214 states and 13927 transitions. Second operand 16 states. [2020-07-07 13:55:46,717 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2020-07-07 13:55:52,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:55:52,147 INFO L93 Difference]: Finished difference Result 27883 states and 29380 transitions. [2020-07-07 13:55:52,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-07-07 13:55:52,148 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 1323 [2020-07-07 13:55:52,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:55:52,186 INFO L225 Difference]: With dead ends: 27883 [2020-07-07 13:55:52,186 INFO L226 Difference]: Without dead ends: 14071 [2020-07-07 13:55:52,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=626, Invalid=2680, Unknown=0, NotChecked=0, Total=3306 [2020-07-07 13:55:52,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14071 states. [2020-07-07 13:55:53,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14071 to 11673. [2020-07-07 13:55:53,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11673 states. [2020-07-07 13:55:53,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11673 states to 11673 states and 12224 transitions. [2020-07-07 13:55:53,841 INFO L78 Accepts]: Start accepts. Automaton has 11673 states and 12224 transitions. Word has length 1323 [2020-07-07 13:55:53,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:55:53,843 INFO L479 AbstractCegarLoop]: Abstraction has 11673 states and 12224 transitions. [2020-07-07 13:55:53,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-07 13:55:53,843 INFO L276 IsEmpty]: Start isEmpty. Operand 11673 states and 12224 transitions. [2020-07-07 13:55:53,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1560 [2020-07-07 13:55:53,863 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:55:53,864 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 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, 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] [2020-07-07 13:55:53,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-07-07 13:55:53,865 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:55:53,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:55:53,865 INFO L82 PathProgramCache]: Analyzing trace with hash 279479539, now seen corresponding path program 1 times [2020-07-07 13:55:53,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:55:53,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332208209] [2020-07-07 13:55:53,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:55:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:55:55,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:55:55,903 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:55:55,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332208209] [2020-07-07 13:55:55,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:55:55,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 13:55:55,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445080280] [2020-07-07 13:55:55,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 13:55:55,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:55:55,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 13:55:55,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:55:55,906 INFO L87 Difference]: Start difference. First operand 11673 states and 12224 transitions. Second operand 8 states. [2020-07-07 13:55:59,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:55:59,578 INFO L93 Difference]: Finished difference Result 23922 states and 25048 transitions. [2020-07-07 13:55:59,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-07 13:55:59,579 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1559 [2020-07-07 13:55:59,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:55:59,614 INFO L225 Difference]: With dead ends: 23922 [2020-07-07 13:55:59,615 INFO L226 Difference]: Without dead ends: 12264 [2020-07-07 13:55:59,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-07-07 13:55:59,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12264 states. [2020-07-07 13:56:01,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12264 to 11864. [2020-07-07 13:56:01,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11864 states. [2020-07-07 13:56:01,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11864 states to 11864 states and 12421 transitions. [2020-07-07 13:56:01,226 INFO L78 Accepts]: Start accepts. Automaton has 11864 states and 12421 transitions. Word has length 1559 [2020-07-07 13:56:01,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:56:01,227 INFO L479 AbstractCegarLoop]: Abstraction has 11864 states and 12421 transitions. [2020-07-07 13:56:01,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 13:56:01,227 INFO L276 IsEmpty]: Start isEmpty. Operand 11864 states and 12421 transitions. [2020-07-07 13:56:01,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1624 [2020-07-07 13:56:01,247 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:56:01,248 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 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, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:56:01,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-07-07 13:56:01,248 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:56:01,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:56:01,248 INFO L82 PathProgramCache]: Analyzing trace with hash 962628263, now seen corresponding path program 1 times [2020-07-07 13:56:01,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:56:01,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004162351] [2020-07-07 13:56:01,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:56:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:05,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:56:05,072 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:56:05,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004162351] [2020-07-07 13:56:05,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:56:05,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 13:56:05,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123835078] [2020-07-07 13:56:05,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 13:56:05,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:56:05,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 13:56:05,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-07-07 13:56:05,074 INFO L87 Difference]: Start difference. First operand 11864 states and 12421 transitions. Second operand 10 states. [2020-07-07 13:56:11,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:56:11,044 INFO L93 Difference]: Finished difference Result 26840 states and 28111 transitions. [2020-07-07 13:56:11,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-07 13:56:11,046 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1623 [2020-07-07 13:56:11,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:56:11,080 INFO L225 Difference]: With dead ends: 26840 [2020-07-07 13:56:11,081 INFO L226 Difference]: Without dead ends: 14203 [2020-07-07 13:56:11,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2020-07-07 13:56:11,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14203 states. [2020-07-07 13:56:12,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14203 to 12260. [2020-07-07 13:56:12,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12260 states. [2020-07-07 13:56:12,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12260 states to 12260 states and 12749 transitions. [2020-07-07 13:56:12,576 INFO L78 Accepts]: Start accepts. Automaton has 12260 states and 12749 transitions. Word has length 1623 [2020-07-07 13:56:12,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:56:12,578 INFO L479 AbstractCegarLoop]: Abstraction has 12260 states and 12749 transitions. [2020-07-07 13:56:12,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 13:56:12,578 INFO L276 IsEmpty]: Start isEmpty. Operand 12260 states and 12749 transitions. [2020-07-07 13:56:12,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1807 [2020-07-07 13:56:12,606 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:56:12,607 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:56:12,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-07-07 13:56:12,607 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:56:12,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:56:12,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1011622840, now seen corresponding path program 1 times [2020-07-07 13:56:12,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:56:12,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482407642] [2020-07-07 13:56:12,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:56:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:16,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:56:16,001 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:56:16,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482407642] [2020-07-07 13:56:16,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:56:16,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 13:56:16,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585370840] [2020-07-07 13:56:16,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 13:56:16,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:56:16,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 13:56:16,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-07-07 13:56:16,004 INFO L87 Difference]: Start difference. First operand 12260 states and 12749 transitions. Second operand 14 states. [2020-07-07 13:56:22,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:56:22,745 INFO L93 Difference]: Finished difference Result 25098 states and 26084 transitions. [2020-07-07 13:56:22,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-07 13:56:22,748 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1806 [2020-07-07 13:56:22,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:56:22,781 INFO L225 Difference]: With dead ends: 25098 [2020-07-07 13:56:22,781 INFO L226 Difference]: Without dead ends: 12652 [2020-07-07 13:56:22,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=445, Invalid=1195, Unknown=0, NotChecked=0, Total=1640 [2020-07-07 13:56:22,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12652 states. [2020-07-07 13:56:24,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12652 to 12248. [2020-07-07 13:56:24,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12248 states. [2020-07-07 13:56:24,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12248 states to 12248 states and 12727 transitions. [2020-07-07 13:56:24,355 INFO L78 Accepts]: Start accepts. Automaton has 12248 states and 12727 transitions. Word has length 1806 [2020-07-07 13:56:24,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:56:24,356 INFO L479 AbstractCegarLoop]: Abstraction has 12248 states and 12727 transitions. [2020-07-07 13:56:24,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 13:56:24,356 INFO L276 IsEmpty]: Start isEmpty. Operand 12248 states and 12727 transitions. [2020-07-07 13:56:24,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2124 [2020-07-07 13:56:24,387 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:56:24,388 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 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] [2020-07-07 13:56:24,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-07-07 13:56:24,388 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:56:24,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:56:24,389 INFO L82 PathProgramCache]: Analyzing trace with hash 200402035, now seen corresponding path program 1 times [2020-07-07 13:56:24,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:56:24,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366363447] [2020-07-07 13:56:24,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:56:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:25,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:56:27,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:56:27,577 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:56:27,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366363447] [2020-07-07 13:56:27,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:56:27,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 13:56:27,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601792099] [2020-07-07 13:56:27,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 13:56:27,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:56:27,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 13:56:27,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-07-07 13:56:27,580 INFO L87 Difference]: Start difference. First operand 12248 states and 12727 transitions. Second operand 10 states. [2020-07-07 13:56:33,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:56:33,941 INFO L93 Difference]: Finished difference Result 19936 states and 20677 transitions. [2020-07-07 13:56:33,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-07 13:56:33,942 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 2123 [2020-07-07 13:56:33,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:56:33,951 INFO L225 Difference]: With dead ends: 19936 [2020-07-07 13:56:33,951 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 13:56:33,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2020-07-07 13:56:33,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 13:56:33,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 13:56:33,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 13:56:33,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 13:56:33,971 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2123 [2020-07-07 13:56:33,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:56:33,972 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 13:56:33,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 13:56:33,972 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 13:56:33,972 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 13:56:33,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-07-07 13:56:33,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 13:56:38,625 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 618 DAG size of output: 517 [2020-07-07 13:56:39,868 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2020-07-07 13:56:41,703 WARN L193 SmtUtils]: Spent 868.00 ms on a formula simplification. DAG size of input: 618 DAG size of output: 517 [2020-07-07 13:56:44,608 WARN L193 SmtUtils]: Spent 866.00 ms on a formula simplification. DAG size of input: 618 DAG size of output: 517 [2020-07-07 13:56:45,291 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-07-07 13:56:50,378 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2020-07-07 13:56:54,752 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-07-07 13:56:59,433 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-07-07 13:57:54,546 WARN L193 SmtUtils]: Spent 866.00 ms on a formula simplification. DAG size of input: 618 DAG size of output: 517 [2020-07-07 13:58:31,348 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 134 [2020-07-07 14:00:59,439 WARN L193 SmtUtils]: Spent 890.00 ms on a formula simplification. DAG size of input: 618 DAG size of output: 517 [2020-07-07 14:03:04,938 WARN L193 SmtUtils]: Spent 866.00 ms on a formula simplification. DAG size of input: 618 DAG size of output: 517 [2020-07-07 14:03:21,294 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 219 [2020-07-07 14:03:22,655 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 313 DAG size of output: 256 [2020-07-07 14:03:23,819 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 206 [2020-07-07 14:03:26,105 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 248 [2020-07-07 14:03:26,319 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 217 [2020-07-07 14:03:26,769 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 241 [2020-07-07 14:03:27,679 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 256 [2020-07-07 14:03:29,426 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 209 [2020-07-07 14:03:30,140 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 217 [2020-07-07 14:03:30,348 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 228 [2020-07-07 14:03:30,459 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 215 [2020-07-07 14:03:30,622 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 219 [2020-07-07 14:03:33,489 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 252 [2020-07-07 14:03:33,718 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 209 [2020-07-07 14:03:34,140 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 219 [2020-07-07 14:03:35,796 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 217 [2020-07-07 14:03:35,912 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 217 [2020-07-07 14:03:36,372 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 219 [2020-07-07 14:03:36,845 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 209 [2020-07-07 14:03:37,411 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 178 [2020-07-07 14:03:38,330 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 331 DAG size of output: 258 [2020-07-07 14:03:38,950 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 209 [2020-07-07 14:03:39,455 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 304 DAG size of output: 255 [2020-07-07 14:03:39,643 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 217 [2020-07-07 14:03:40,219 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 217 [2020-07-07 14:03:40,711 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 368 DAG size of output: 310 [2020-07-07 14:03:41,344 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 368 DAG size of output: 310 [2020-07-07 14:03:42,065 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 209 [2020-07-07 14:03:42,992 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 365 DAG size of output: 305 [2020-07-07 14:03:45,114 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 209 [2020-07-07 14:03:48,242 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 219 [2020-07-07 14:03:49,597 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 313 DAG size of output: 256 [2020-07-07 14:03:50,736 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 206 [2020-07-07 14:03:53,047 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 248 [2020-07-07 14:03:53,285 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 217 [2020-07-07 14:03:53,740 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 241 [2020-07-07 14:03:54,628 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 256 [2020-07-07 14:03:56,380 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 209 [2020-07-07 14:03:56,947 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 183 [2020-07-07 14:03:57,097 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 217 [2020-07-07 14:03:57,309 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 228 [2020-07-07 14:03:57,414 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 215 [2020-07-07 14:03:57,557 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 219 [2020-07-07 14:04:00,454 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 252 [2020-07-07 14:04:00,709 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 209 [2020-07-07 14:04:01,141 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 219 [2020-07-07 14:04:02,805 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 217 [2020-07-07 14:04:02,921 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 217 [2020-07-07 14:04:03,386 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 219 [2020-07-07 14:04:03,856 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 209 [2020-07-07 14:04:04,441 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 178 [2020-07-07 14:04:05,342 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 331 DAG size of output: 258 [2020-07-07 14:04:05,955 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 209 [2020-07-07 14:04:06,458 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 304 DAG size of output: 255 [2020-07-07 14:04:06,656 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 217 [2020-07-07 14:04:07,241 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 217 [2020-07-07 14:04:07,747 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 368 DAG size of output: 310 [2020-07-07 14:04:08,391 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 368 DAG size of output: 310 [2020-07-07 14:04:09,106 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 209 [2020-07-07 14:04:10,037 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 365 DAG size of output: 305 [2020-07-07 14:04:12,165 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 209 [2020-07-07 14:05:22,279 WARN L193 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 618 DAG size of output: 517 [2020-07-07 14:05:24,738 WARN L193 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 609 DAG size of output: 512 [2020-07-07 14:05:26,762 WARN L193 SmtUtils]: Spent 887.00 ms on a formula simplification. DAG size of input: 609 DAG size of output: 512 [2020-07-07 14:05:28,951 WARN L193 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 609 DAG size of output: 512