/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/locks/test_locks_10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 05:10:23,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 05:10:23,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 05:10:23,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 05:10:23,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 05:10:23,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 05:10:23,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 05:10:23,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 05:10:23,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 05:10:23,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 05:10:23,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 05:10:23,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 05:10:23,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 05:10:23,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 05:10:23,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 05:10:23,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 05:10:23,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 05:10:23,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 05:10:23,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 05:10:23,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 05:10:23,533 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 05:10:23,545 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 05:10:23,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 05:10:23,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 05:10:23,547 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 05:10:23,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 05:10:23,548 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 05:10:23,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 05:10:23,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 05:10:23,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 05:10:23,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 05:10:23,549 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 05:10:23,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 05:10:23,549 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 05:10:23,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 05:10:23,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 05:10:23,550 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 05:10:23,550 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 05:10:23,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 05:10:23,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:10:23,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 05:10:23,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 05:10:23,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 05:10:23,552 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 05:10:23,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 05:10:23,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 05:10:23,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 05:10:23,968 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 05:10:23,969 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 05:10:23,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_10.c [2020-11-07 05:10:24,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f203ffca/1139711e7e894411916e46a8a24352ad/FLAG4416a0642 [2020-11-07 05:10:24,646 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 05:10:24,646 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_10.c [2020-11-07 05:10:24,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f203ffca/1139711e7e894411916e46a8a24352ad/FLAG4416a0642 [2020-11-07 05:10:25,005 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f203ffca/1139711e7e894411916e46a8a24352ad [2020-11-07 05:10:25,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 05:10:25,020 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 05:10:25,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 05:10:25,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 05:10:25,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 05:10:25,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:10:25" (1/1) ... [2020-11-07 05:10:25,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1be48325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:10:25, skipping insertion in model container [2020-11-07 05:10:25,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:10:25" (1/1) ... [2020-11-07 05:10:25,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 05:10:25,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 05:10:25,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:10:25,236 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 05:10:25,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:10:25,283 INFO L208 MainTranslator]: Completed translation [2020-11-07 05:10:25,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:10:25 WrapperNode [2020-11-07 05:10:25,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 05:10:25,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 05:10:25,286 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 05:10:25,286 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 05:10:25,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:10:25" (1/1) ... [2020-11-07 05:10:25,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:10:25" (1/1) ... [2020-11-07 05:10:25,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:10:25" (1/1) ... [2020-11-07 05:10:25,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:10:25" (1/1) ... [2020-11-07 05:10:25,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:10:25" (1/1) ... [2020-11-07 05:10:25,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:10:25" (1/1) ... [2020-11-07 05:10:25,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:10:25" (1/1) ... [2020-11-07 05:10:25,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 05:10:25,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 05:10:25,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 05:10:25,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 05:10:25,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:10:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:10:25,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 05:10:25,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 05:10:25,416 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 05:10:25,416 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 05:10:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 05:10:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 05:10:25,417 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 05:10:25,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 05:10:25,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 05:10:25,417 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 05:10:25,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 05:10:25,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 05:10:25,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 05:10:25,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 05:10:25,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 05:10:25,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 05:10:26,189 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 05:10:26,190 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 05:10:26,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:10:26 BoogieIcfgContainer [2020-11-07 05:10:26,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 05:10:26,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 05:10:26,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 05:10:26,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 05:10:26,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:10:25" (1/3) ... [2020-11-07 05:10:26,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6a44eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:10:26, skipping insertion in model container [2020-11-07 05:10:26,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:10:25" (2/3) ... [2020-11-07 05:10:26,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6a44eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:10:26, skipping insertion in model container [2020-11-07 05:10:26,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:10:26" (3/3) ... [2020-11-07 05:10:26,209 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_10.c [2020-11-07 05:10:26,227 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 05:10:26,232 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 05:10:26,246 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 05:10:26,283 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 05:10:26,283 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 05:10:26,283 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 05:10:26,283 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 05:10:26,284 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 05:10:26,284 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 05:10:26,284 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 05:10:26,284 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 05:10:26,311 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states. [2020-11-07 05:10:26,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-11-07 05:10:26,329 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:10:26,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:10:26,331 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:10:26,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:10:26,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1388703679, now seen corresponding path program 1 times [2020-11-07 05:10:26,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:10:26,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653089728] [2020-11-07 05:10:26,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:10:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:26,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:10:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:26,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:10:26,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653089728] [2020-11-07 05:10:26,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:10:26,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:10:26,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955184563] [2020-11-07 05:10:26,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:10:26,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:10:26,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:10:26,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:10:26,787 INFO L87 Difference]: Start difference. First operand 130 states. Second operand 4 states. [2020-11-07 05:10:27,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:10:27,289 INFO L93 Difference]: Finished difference Result 269 states and 367 transitions. [2020-11-07 05:10:27,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 05:10:27,291 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-11-07 05:10:27,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:10:27,306 INFO L225 Difference]: With dead ends: 269 [2020-11-07 05:10:27,306 INFO L226 Difference]: Without dead ends: 184 [2020-11-07 05:10:27,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:10:27,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-11-07 05:10:27,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2020-11-07 05:10:27,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-11-07 05:10:27,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 239 transitions. [2020-11-07 05:10:27,395 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 239 transitions. Word has length 82 [2020-11-07 05:10:27,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:10:27,396 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 239 transitions. [2020-11-07 05:10:27,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:10:27,397 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 239 transitions. [2020-11-07 05:10:27,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-11-07 05:10:27,400 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:10:27,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:10:27,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 05:10:27,401 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:10:27,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:10:27,402 INFO L82 PathProgramCache]: Analyzing trace with hash 477474984, now seen corresponding path program 1 times [2020-11-07 05:10:27,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:10:27,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673635918] [2020-11-07 05:10:27,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:10:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:27,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:10:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:27,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:10:27,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673635918] [2020-11-07 05:10:27,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:10:27,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:10:27,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127328868] [2020-11-07 05:10:27,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:10:27,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:10:27,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:10:27,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:10:27,583 INFO L87 Difference]: Start difference. First operand 183 states and 239 transitions. Second operand 4 states. [2020-11-07 05:10:28,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:10:28,010 INFO L93 Difference]: Finished difference Result 220 states and 293 transitions. [2020-11-07 05:10:28,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 05:10:28,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-11-07 05:10:28,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:10:28,014 INFO L225 Difference]: With dead ends: 220 [2020-11-07 05:10:28,014 INFO L226 Difference]: Without dead ends: 217 [2020-11-07 05:10:28,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:10:28,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-11-07 05:10:28,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 183. [2020-11-07 05:10:28,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-11-07 05:10:28,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 238 transitions. [2020-11-07 05:10:28,054 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 238 transitions. Word has length 83 [2020-11-07 05:10:28,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:10:28,055 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 238 transitions. [2020-11-07 05:10:28,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:10:28,055 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 238 transitions. [2020-11-07 05:10:28,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-11-07 05:10:28,057 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:10:28,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:10:28,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 05:10:28,057 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:10:28,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:10:28,058 INFO L82 PathProgramCache]: Analyzing trace with hash -92586482, now seen corresponding path program 1 times [2020-11-07 05:10:28,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:10:28,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698052642] [2020-11-07 05:10:28,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:10:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:28,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:10:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:28,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:10:28,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698052642] [2020-11-07 05:10:28,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:10:28,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:10:28,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934821133] [2020-11-07 05:10:28,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:10:28,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:10:28,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:10:28,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:10:28,190 INFO L87 Difference]: Start difference. First operand 183 states and 238 transitions. Second operand 4 states. [2020-11-07 05:10:28,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:10:28,599 INFO L93 Difference]: Finished difference Result 435 states and 599 transitions. [2020-11-07 05:10:28,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 05:10:28,600 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-11-07 05:10:28,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:10:28,603 INFO L225 Difference]: With dead ends: 435 [2020-11-07 05:10:28,603 INFO L226 Difference]: Without dead ends: 305 [2020-11-07 05:10:28,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:10:28,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-11-07 05:10:28,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 304. [2020-11-07 05:10:28,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-11-07 05:10:28,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 409 transitions. [2020-11-07 05:10:28,672 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 409 transitions. Word has length 83 [2020-11-07 05:10:28,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:10:28,673 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 409 transitions. [2020-11-07 05:10:28,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:10:28,673 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 409 transitions. [2020-11-07 05:10:28,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-07 05:10:28,675 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:10:28,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:10:28,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 05:10:28,676 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:10:28,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:10:28,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1859268204, now seen corresponding path program 1 times [2020-11-07 05:10:28,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:10:28,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80189001] [2020-11-07 05:10:28,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:10:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:28,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:10:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:28,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:10:28,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80189001] [2020-11-07 05:10:28,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:10:28,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:10:28,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860264609] [2020-11-07 05:10:28,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:10:28,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:10:28,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:10:28,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:10:28,799 INFO L87 Difference]: Start difference. First operand 304 states and 409 transitions. Second operand 4 states. [2020-11-07 05:10:29,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:10:29,192 INFO L93 Difference]: Finished difference Result 370 states and 506 transitions. [2020-11-07 05:10:29,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 05:10:29,192 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-11-07 05:10:29,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:10:29,195 INFO L225 Difference]: With dead ends: 370 [2020-11-07 05:10:29,195 INFO L226 Difference]: Without dead ends: 367 [2020-11-07 05:10:29,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:10:29,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-11-07 05:10:29,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 304. [2020-11-07 05:10:29,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-11-07 05:10:29,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 407 transitions. [2020-11-07 05:10:29,254 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 407 transitions. Word has length 84 [2020-11-07 05:10:29,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:10:29,254 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 407 transitions. [2020-11-07 05:10:29,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:10:29,255 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 407 transitions. [2020-11-07 05:10:29,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-07 05:10:29,256 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:10:29,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:10:29,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 05:10:29,257 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:10:29,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:10:29,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1432352493, now seen corresponding path program 1 times [2020-11-07 05:10:29,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:10:29,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507793572] [2020-11-07 05:10:29,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:10:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:29,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:10:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:29,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:10:29,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507793572] [2020-11-07 05:10:29,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:10:29,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:10:29,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737430199] [2020-11-07 05:10:29,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:10:29,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:10:29,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:10:29,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:10:29,342 INFO L87 Difference]: Start difference. First operand 304 states and 407 transitions. Second operand 4 states. [2020-11-07 05:10:29,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:10:29,747 INFO L93 Difference]: Finished difference Result 792 states and 1098 transitions. [2020-11-07 05:10:29,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 05:10:29,748 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-11-07 05:10:29,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:10:29,751 INFO L225 Difference]: With dead ends: 792 [2020-11-07 05:10:29,752 INFO L226 Difference]: Without dead ends: 541 [2020-11-07 05:10:29,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:10:29,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2020-11-07 05:10:29,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 540. [2020-11-07 05:10:29,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2020-11-07 05:10:29,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 735 transitions. [2020-11-07 05:10:29,855 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 735 transitions. Word has length 84 [2020-11-07 05:10:29,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:10:29,856 INFO L481 AbstractCegarLoop]: Abstraction has 540 states and 735 transitions. [2020-11-07 05:10:29,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:10:29,856 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 735 transitions. [2020-11-07 05:10:29,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-07 05:10:29,858 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:10:29,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:10:29,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 05:10:29,858 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:10:29,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:10:29,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1745196596, now seen corresponding path program 1 times [2020-11-07 05:10:29,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:10:29,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736655219] [2020-11-07 05:10:29,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:10:29,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:29,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:10:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:29,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:10:29,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736655219] [2020-11-07 05:10:29,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:10:29,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:10:29,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344190125] [2020-11-07 05:10:29,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:10:29,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:10:29,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:10:29,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:10:29,967 INFO L87 Difference]: Start difference. First operand 540 states and 735 transitions. Second operand 4 states. [2020-11-07 05:10:30,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:10:30,378 INFO L93 Difference]: Finished difference Result 660 states and 910 transitions. [2020-11-07 05:10:30,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 05:10:30,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-11-07 05:10:30,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:10:30,383 INFO L225 Difference]: With dead ends: 660 [2020-11-07 05:10:30,383 INFO L226 Difference]: Without dead ends: 657 [2020-11-07 05:10:30,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:10:30,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2020-11-07 05:10:30,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 540. [2020-11-07 05:10:30,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2020-11-07 05:10:30,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 731 transitions. [2020-11-07 05:10:30,475 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 731 transitions. Word has length 85 [2020-11-07 05:10:30,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:10:30,477 INFO L481 AbstractCegarLoop]: Abstraction has 540 states and 731 transitions. [2020-11-07 05:10:30,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:10:30,483 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 731 transitions. [2020-11-07 05:10:30,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-07 05:10:30,485 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:10:30,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:10:30,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 05:10:30,486 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:10:30,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:10:30,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1460831994, now seen corresponding path program 1 times [2020-11-07 05:10:30,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:10:30,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994409681] [2020-11-07 05:10:30,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:10:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:30,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:10:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:30,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:10:30,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994409681] [2020-11-07 05:10:30,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:10:30,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:10:30,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065152522] [2020-11-07 05:10:30,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:10:30,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:10:30,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:10:30,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:10:30,616 INFO L87 Difference]: Start difference. First operand 540 states and 731 transitions. Second operand 4 states. [2020-11-07 05:10:31,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:10:31,097 INFO L93 Difference]: Finished difference Result 1488 states and 2054 transitions. [2020-11-07 05:10:31,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 05:10:31,097 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-11-07 05:10:31,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:10:31,103 INFO L225 Difference]: With dead ends: 1488 [2020-11-07 05:10:31,103 INFO L226 Difference]: Without dead ends: 1001 [2020-11-07 05:10:31,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:10:31,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2020-11-07 05:10:31,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 1000. [2020-11-07 05:10:31,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-11-07 05:10:31,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1359 transitions. [2020-11-07 05:10:31,260 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1359 transitions. Word has length 85 [2020-11-07 05:10:31,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:10:31,261 INFO L481 AbstractCegarLoop]: Abstraction has 1000 states and 1359 transitions. [2020-11-07 05:10:31,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:10:31,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1359 transitions. [2020-11-07 05:10:31,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-07 05:10:31,263 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:10:31,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:10:31,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 05:10:31,264 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:10:31,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:10:31,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1791011720, now seen corresponding path program 1 times [2020-11-07 05:10:31,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:10:31,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407822841] [2020-11-07 05:10:31,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:10:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:31,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:10:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:31,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:10:31,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407822841] [2020-11-07 05:10:31,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:10:31,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:10:31,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332920186] [2020-11-07 05:10:31,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:10:31,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:10:31,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:10:31,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:10:31,376 INFO L87 Difference]: Start difference. First operand 1000 states and 1359 transitions. Second operand 4 states. [2020-11-07 05:10:31,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:10:31,876 INFO L93 Difference]: Finished difference Result 1220 states and 1674 transitions. [2020-11-07 05:10:31,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 05:10:31,877 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-11-07 05:10:31,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:10:31,883 INFO L225 Difference]: With dead ends: 1220 [2020-11-07 05:10:31,883 INFO L226 Difference]: Without dead ends: 1217 [2020-11-07 05:10:31,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:10:31,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2020-11-07 05:10:32,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1000. [2020-11-07 05:10:32,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-11-07 05:10:32,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1351 transitions. [2020-11-07 05:10:32,044 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1351 transitions. Word has length 86 [2020-11-07 05:10:32,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:10:32,045 INFO L481 AbstractCegarLoop]: Abstraction has 1000 states and 1351 transitions. [2020-11-07 05:10:32,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:10:32,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1351 transitions. [2020-11-07 05:10:32,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-07 05:10:32,046 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:10:32,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:10:32,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 05:10:32,047 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:10:32,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:10:32,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1951259239, now seen corresponding path program 1 times [2020-11-07 05:10:32,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:10:32,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587518521] [2020-11-07 05:10:32,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:10:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:32,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:10:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:32,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:10:32,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587518521] [2020-11-07 05:10:32,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:10:32,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:10:32,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782964219] [2020-11-07 05:10:32,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:10:32,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:10:32,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:10:32,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:10:32,124 INFO L87 Difference]: Start difference. First operand 1000 states and 1351 transitions. Second operand 4 states. [2020-11-07 05:10:32,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:10:32,835 INFO L93 Difference]: Finished difference Result 2844 states and 3882 transitions. [2020-11-07 05:10:32,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 05:10:32,835 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-11-07 05:10:32,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:10:32,845 INFO L225 Difference]: With dead ends: 2844 [2020-11-07 05:10:32,846 INFO L226 Difference]: Without dead ends: 1897 [2020-11-07 05:10:32,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:10:32,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1897 states. [2020-11-07 05:10:33,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1897 to 1896. [2020-11-07 05:10:33,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1896 states. [2020-11-07 05:10:33,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 2551 transitions. [2020-11-07 05:10:33,162 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 2551 transitions. Word has length 86 [2020-11-07 05:10:33,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:10:33,162 INFO L481 AbstractCegarLoop]: Abstraction has 1896 states and 2551 transitions. [2020-11-07 05:10:33,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:10:33,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 2551 transitions. [2020-11-07 05:10:33,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-11-07 05:10:33,170 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:10:33,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:10:33,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-07 05:10:33,170 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:10:33,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:10:33,173 INFO L82 PathProgramCache]: Analyzing trace with hash 255691712, now seen corresponding path program 1 times [2020-11-07 05:10:33,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:10:33,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023821958] [2020-11-07 05:10:33,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:10:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:33,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:10:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:33,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:10:33,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023821958] [2020-11-07 05:10:33,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:10:33,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:10:33,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902776590] [2020-11-07 05:10:33,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:10:33,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:10:33,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:10:33,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:10:33,260 INFO L87 Difference]: Start difference. First operand 1896 states and 2551 transitions. Second operand 4 states. [2020-11-07 05:10:33,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:10:33,913 INFO L93 Difference]: Finished difference Result 2300 states and 3114 transitions. [2020-11-07 05:10:33,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 05:10:33,913 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-11-07 05:10:33,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:10:33,924 INFO L225 Difference]: With dead ends: 2300 [2020-11-07 05:10:33,924 INFO L226 Difference]: Without dead ends: 2297 [2020-11-07 05:10:33,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:10:33,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2020-11-07 05:10:34,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 1896. [2020-11-07 05:10:34,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1896 states. [2020-11-07 05:10:34,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 2535 transitions. [2020-11-07 05:10:34,229 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 2535 transitions. Word has length 87 [2020-11-07 05:10:34,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:10:34,229 INFO L481 AbstractCegarLoop]: Abstraction has 1896 states and 2535 transitions. [2020-11-07 05:10:34,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:10:34,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 2535 transitions. [2020-11-07 05:10:34,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-11-07 05:10:34,231 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:10:34,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:10:34,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-07 05:10:34,232 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:10:34,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:10:34,233 INFO L82 PathProgramCache]: Analyzing trace with hash -351893530, now seen corresponding path program 1 times [2020-11-07 05:10:34,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:10:34,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713679261] [2020-11-07 05:10:34,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:10:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:34,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:10:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:34,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:10:34,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713679261] [2020-11-07 05:10:34,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:10:34,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:10:34,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699806172] [2020-11-07 05:10:34,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:10:34,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:10:34,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:10:34,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:10:34,301 INFO L87 Difference]: Start difference. First operand 1896 states and 2535 transitions. Second operand 4 states. [2020-11-07 05:10:35,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:10:35,228 INFO L93 Difference]: Finished difference Result 5484 states and 7370 transitions. [2020-11-07 05:10:35,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 05:10:35,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-11-07 05:10:35,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:10:35,245 INFO L225 Difference]: With dead ends: 5484 [2020-11-07 05:10:35,245 INFO L226 Difference]: Without dead ends: 3641 [2020-11-07 05:10:35,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:10:35,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3641 states. [2020-11-07 05:10:35,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3641 to 3640. [2020-11-07 05:10:35,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3640 states. [2020-11-07 05:10:35,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 4823 transitions. [2020-11-07 05:10:35,731 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 4823 transitions. Word has length 87 [2020-11-07 05:10:35,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:10:35,732 INFO L481 AbstractCegarLoop]: Abstraction has 3640 states and 4823 transitions. [2020-11-07 05:10:35,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:10:35,732 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 4823 transitions. [2020-11-07 05:10:35,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-07 05:10:35,735 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:10:35,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:10:35,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-07 05:10:35,736 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:10:35,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:10:35,736 INFO L82 PathProgramCache]: Analyzing trace with hash -720999804, now seen corresponding path program 1 times [2020-11-07 05:10:35,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:10:35,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232291361] [2020-11-07 05:10:35,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:10:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:35,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:10:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:35,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:10:35,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232291361] [2020-11-07 05:10:35,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:10:35,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:10:35,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686503271] [2020-11-07 05:10:35,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:10:35,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:10:35,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:10:35,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:10:35,813 INFO L87 Difference]: Start difference. First operand 3640 states and 4823 transitions. Second operand 4 states. [2020-11-07 05:10:36,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:10:36,662 INFO L93 Difference]: Finished difference Result 4380 states and 5818 transitions. [2020-11-07 05:10:36,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 05:10:36,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-11-07 05:10:36,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:10:36,681 INFO L225 Difference]: With dead ends: 4380 [2020-11-07 05:10:36,681 INFO L226 Difference]: Without dead ends: 4377 [2020-11-07 05:10:36,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:10:36,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4377 states. [2020-11-07 05:10:37,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4377 to 3640. [2020-11-07 05:10:37,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3640 states. [2020-11-07 05:10:37,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 4791 transitions. [2020-11-07 05:10:37,300 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 4791 transitions. Word has length 88 [2020-11-07 05:10:37,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:10:37,301 INFO L481 AbstractCegarLoop]: Abstraction has 3640 states and 4791 transitions. [2020-11-07 05:10:37,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:10:37,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 4791 transitions. [2020-11-07 05:10:37,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-07 05:10:37,304 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:10:37,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:10:37,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-07 05:10:37,305 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:10:37,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:10:37,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1983814725, now seen corresponding path program 1 times [2020-11-07 05:10:37,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:10:37,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496393953] [2020-11-07 05:10:37,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:10:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:37,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:10:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:37,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:10:37,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496393953] [2020-11-07 05:10:37,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:10:37,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:10:37,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757693250] [2020-11-07 05:10:37,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:10:37,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:10:37,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:10:37,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:10:37,375 INFO L87 Difference]: Start difference. First operand 3640 states and 4791 transitions. Second operand 4 states. [2020-11-07 05:10:38,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:10:38,522 INFO L93 Difference]: Finished difference Result 10620 states and 14010 transitions. [2020-11-07 05:10:38,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 05:10:38,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-11-07 05:10:38,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:10:38,548 INFO L225 Difference]: With dead ends: 10620 [2020-11-07 05:10:38,548 INFO L226 Difference]: Without dead ends: 7033 [2020-11-07 05:10:38,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:10:38,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7033 states. [2020-11-07 05:10:39,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7033 to 7032. [2020-11-07 05:10:39,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7032 states. [2020-11-07 05:10:39,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7032 states to 7032 states and 9143 transitions. [2020-11-07 05:10:39,518 INFO L78 Accepts]: Start accepts. Automaton has 7032 states and 9143 transitions. Word has length 88 [2020-11-07 05:10:39,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:10:39,519 INFO L481 AbstractCegarLoop]: Abstraction has 7032 states and 9143 transitions. [2020-11-07 05:10:39,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:10:39,519 INFO L276 IsEmpty]: Start isEmpty. Operand 7032 states and 9143 transitions. [2020-11-07 05:10:39,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-07 05:10:39,526 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:10:39,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:10:39,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-07 05:10:39,526 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:10:39,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:10:39,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1376338130, now seen corresponding path program 1 times [2020-11-07 05:10:39,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:10:39,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965608693] [2020-11-07 05:10:39,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:10:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:39,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:10:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:39,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:10:39,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965608693] [2020-11-07 05:10:39,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:10:39,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:10:39,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284597953] [2020-11-07 05:10:39,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:10:39,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:10:39,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:10:39,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:10:39,602 INFO L87 Difference]: Start difference. First operand 7032 states and 9143 transitions. Second operand 4 states. [2020-11-07 05:10:41,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:10:41,531 INFO L93 Difference]: Finished difference Result 20604 states and 26810 transitions. [2020-11-07 05:10:41,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 05:10:41,532 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-11-07 05:10:41,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:10:41,568 INFO L225 Difference]: With dead ends: 20604 [2020-11-07 05:10:41,568 INFO L226 Difference]: Without dead ends: 13625 [2020-11-07 05:10:41,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:10:41,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13625 states. [2020-11-07 05:10:43,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13625 to 13624. [2020-11-07 05:10:43,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13624 states. [2020-11-07 05:10:43,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13624 states to 13624 states and 17463 transitions. [2020-11-07 05:10:43,341 INFO L78 Accepts]: Start accepts. Automaton has 13624 states and 17463 transitions. Word has length 89 [2020-11-07 05:10:43,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:10:43,342 INFO L481 AbstractCegarLoop]: Abstraction has 13624 states and 17463 transitions. [2020-11-07 05:10:43,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:10:43,342 INFO L276 IsEmpty]: Start isEmpty. Operand 13624 states and 17463 transitions. [2020-11-07 05:10:43,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-07 05:10:43,351 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:10:43,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:10:43,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-07 05:10:43,352 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:10:43,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:10:43,352 INFO L82 PathProgramCache]: Analyzing trace with hash -933654196, now seen corresponding path program 1 times [2020-11-07 05:10:43,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:10:43,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495639084] [2020-11-07 05:10:43,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:10:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:43,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:10:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:43,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:10:43,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495639084] [2020-11-07 05:10:43,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:10:43,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:10:43,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483629544] [2020-11-07 05:10:43,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:10:43,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:10:43,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:10:43,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:10:43,421 INFO L87 Difference]: Start difference. First operand 13624 states and 17463 transitions. Second operand 4 states. [2020-11-07 05:10:45,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:10:45,337 INFO L93 Difference]: Finished difference Result 16188 states and 20666 transitions. [2020-11-07 05:10:45,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 05:10:45,337 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-11-07 05:10:45,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:10:45,375 INFO L225 Difference]: With dead ends: 16188 [2020-11-07 05:10:45,375 INFO L226 Difference]: Without dead ends: 16185 [2020-11-07 05:10:45,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:10:45,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16185 states. [2020-11-07 05:10:46,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16185 to 13624. [2020-11-07 05:10:46,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13624 states. [2020-11-07 05:10:46,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13624 states to 13624 states and 17335 transitions. [2020-11-07 05:10:46,828 INFO L78 Accepts]: Start accepts. Automaton has 13624 states and 17335 transitions. Word has length 89 [2020-11-07 05:10:46,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:10:46,828 INFO L481 AbstractCegarLoop]: Abstraction has 13624 states and 17335 transitions. [2020-11-07 05:10:46,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:10:46,829 INFO L276 IsEmpty]: Start isEmpty. Operand 13624 states and 17335 transitions. [2020-11-07 05:10:46,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-11-07 05:10:46,838 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:10:46,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:10:46,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-07 05:10:46,839 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:10:46,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:10:46,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1064005776, now seen corresponding path program 1 times [2020-11-07 05:10:46,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:10:46,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964273136] [2020-11-07 05:10:46,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:10:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:46,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:10:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:46,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:10:46,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964273136] [2020-11-07 05:10:46,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:10:46,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:10:46,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839459350] [2020-11-07 05:10:46,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:10:46,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:10:46,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:10:46,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:10:46,892 INFO L87 Difference]: Start difference. First operand 13624 states and 17335 transitions. Second operand 4 states. [2020-11-07 05:10:49,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:10:49,346 INFO L93 Difference]: Finished difference Result 16060 states and 20282 transitions. [2020-11-07 05:10:49,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 05:10:49,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-11-07 05:10:49,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:10:49,379 INFO L225 Difference]: With dead ends: 16060 [2020-11-07 05:10:49,380 INFO L226 Difference]: Without dead ends: 16057 [2020-11-07 05:10:49,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:10:49,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16057 states. [2020-11-07 05:10:51,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16057 to 13624. [2020-11-07 05:10:51,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13624 states. [2020-11-07 05:10:51,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13624 states to 13624 states and 17207 transitions. [2020-11-07 05:10:51,093 INFO L78 Accepts]: Start accepts. Automaton has 13624 states and 17207 transitions. Word has length 90 [2020-11-07 05:10:51,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:10:51,094 INFO L481 AbstractCegarLoop]: Abstraction has 13624 states and 17207 transitions. [2020-11-07 05:10:51,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:10:51,094 INFO L276 IsEmpty]: Start isEmpty. Operand 13624 states and 17207 transitions. [2020-11-07 05:10:51,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-11-07 05:10:51,102 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:10:51,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:10:51,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-07 05:10:51,103 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:10:51,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:10:51,103 INFO L82 PathProgramCache]: Analyzing trace with hash -275555599, now seen corresponding path program 1 times [2020-11-07 05:10:51,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:10:51,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407279643] [2020-11-07 05:10:51,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:10:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:51,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:10:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:51,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:10:51,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407279643] [2020-11-07 05:10:51,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:10:51,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:10:51,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046625311] [2020-11-07 05:10:51,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:10:51,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:10:51,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:10:51,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:10:51,161 INFO L87 Difference]: Start difference. First operand 13624 states and 17207 transitions. Second operand 4 states. [2020-11-07 05:10:54,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:10:54,041 INFO L93 Difference]: Finished difference Result 39996 states and 50490 transitions. [2020-11-07 05:10:54,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 05:10:54,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-11-07 05:10:54,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:10:54,090 INFO L225 Difference]: With dead ends: 39996 [2020-11-07 05:10:54,090 INFO L226 Difference]: Without dead ends: 26425 [2020-11-07 05:10:54,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:10:54,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26425 states. [2020-11-07 05:10:57,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26425 to 26424. [2020-11-07 05:10:57,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26424 states. [2020-11-07 05:10:57,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26424 states to 26424 states and 32823 transitions. [2020-11-07 05:10:57,244 INFO L78 Accepts]: Start accepts. Automaton has 26424 states and 32823 transitions. Word has length 90 [2020-11-07 05:10:57,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:10:57,244 INFO L481 AbstractCegarLoop]: Abstraction has 26424 states and 32823 transitions. [2020-11-07 05:10:57,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:10:57,244 INFO L276 IsEmpty]: Start isEmpty. Operand 26424 states and 32823 transitions. [2020-11-07 05:10:57,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-07 05:10:57,259 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:10:57,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:10:57,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-07 05:10:57,259 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:10:57,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:10:57,260 INFO L82 PathProgramCache]: Analyzing trace with hash 55357886, now seen corresponding path program 1 times [2020-11-07 05:10:57,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:10:57,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246350031] [2020-11-07 05:10:57,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:10:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:57,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:10:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:10:57,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:10:57,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246350031] [2020-11-07 05:10:57,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:10:57,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:10:57,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729627741] [2020-11-07 05:10:57,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:10:57,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:10:57,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:10:57,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:10:57,315 INFO L87 Difference]: Start difference. First operand 26424 states and 32823 transitions. Second operand 4 states. [2020-11-07 05:11:03,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:11:03,348 INFO L93 Difference]: Finished difference Result 77628 states and 96314 transitions. [2020-11-07 05:11:03,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 05:11:03,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2020-11-07 05:11:03,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:11:03,401 INFO L225 Difference]: With dead ends: 77628 [2020-11-07 05:11:03,401 INFO L226 Difference]: Without dead ends: 39225 [2020-11-07 05:11:03,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:11:03,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39225 states. [2020-11-07 05:11:07,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39225 to 39224. [2020-11-07 05:11:07,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39224 states. [2020-11-07 05:11:07,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39224 states to 39224 states and 47415 transitions. [2020-11-07 05:11:07,901 INFO L78 Accepts]: Start accepts. Automaton has 39224 states and 47415 transitions. Word has length 91 [2020-11-07 05:11:07,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:11:07,902 INFO L481 AbstractCegarLoop]: Abstraction has 39224 states and 47415 transitions. [2020-11-07 05:11:07,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:11:07,902 INFO L276 IsEmpty]: Start isEmpty. Operand 39224 states and 47415 transitions. [2020-11-07 05:11:07,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-07 05:11:07,916 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:11:07,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:11:07,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-07 05:11:07,916 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:11:07,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:11:07,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1433033000, now seen corresponding path program 1 times [2020-11-07 05:11:07,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:11:07,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509582799] [2020-11-07 05:11:07,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:11:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:07,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:11:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:07,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:11:07,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509582799] [2020-11-07 05:11:07,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:11:07,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:11:07,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709280485] [2020-11-07 05:11:07,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:11:07,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:11:07,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:11:07,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:11:07,983 INFO L87 Difference]: Start difference. First operand 39224 states and 47415 transitions. Second operand 4 states. [2020-11-07 05:11:13,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:11:13,137 INFO L93 Difference]: Finished difference Result 43580 states and 52026 transitions. [2020-11-07 05:11:13,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 05:11:13,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2020-11-07 05:11:13,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:11:13,174 INFO L225 Difference]: With dead ends: 43580 [2020-11-07 05:11:13,174 INFO L226 Difference]: Without dead ends: 30777 [2020-11-07 05:11:13,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:11:13,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30777 states. [2020-11-07 05:11:16,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30777 to 26424. [2020-11-07 05:11:16,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26424 states. [2020-11-07 05:11:16,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26424 states to 26424 states and 31543 transitions. [2020-11-07 05:11:16,428 INFO L78 Accepts]: Start accepts. Automaton has 26424 states and 31543 transitions. Word has length 91 [2020-11-07 05:11:16,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:11:16,428 INFO L481 AbstractCegarLoop]: Abstraction has 26424 states and 31543 transitions. [2020-11-07 05:11:16,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:11:16,429 INFO L276 IsEmpty]: Start isEmpty. Operand 26424 states and 31543 transitions. [2020-11-07 05:11:16,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-11-07 05:11:16,439 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:11:16,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:11:16,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-07 05:11:16,439 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:11:16,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:11:16,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1531812196, now seen corresponding path program 1 times [2020-11-07 05:11:16,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:11:16,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249778736] [2020-11-07 05:11:16,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:11:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:16,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:11:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:11:16,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:11:16,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249778736] [2020-11-07 05:11:16,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:11:16,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:11:16,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288846860] [2020-11-07 05:11:16,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:11:16,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:11:16,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:11:16,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:11:16,492 INFO L87 Difference]: Start difference. First operand 26424 states and 31543 transitions. Second operand 4 states. [2020-11-07 05:11:19,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:11:19,730 INFO L93 Difference]: Finished difference Result 26424 states and 31543 transitions. [2020-11-07 05:11:19,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 05:11:19,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-11-07 05:11:19,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:11:19,731 INFO L225 Difference]: With dead ends: 26424 [2020-11-07 05:11:19,731 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 05:11:19,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:11:19,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 05:11:19,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 05:11:19,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 05:11:19,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 05:11:19,775 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 92 [2020-11-07 05:11:19,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:11:19,776 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 05:11:19,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:11:19,776 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 05:11:19,776 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 05:11:19,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-07 05:11:19,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 05:11:22,567 WARN L194 SmtUtils]: Spent 2.70 s on a formula simplification. DAG size of input: 1085 DAG size of output: 65 [2020-11-07 05:11:27,777 WARN L194 SmtUtils]: Spent 5.20 s on a formula simplification. DAG size of input: 2619 DAG size of output: 31 [2020-11-07 05:11:28,120 WARN L194 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 31 [2020-11-07 05:11:30,405 WARN L194 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 1286 DAG size of output: 65 [2020-11-07 05:11:31,867 WARN L194 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 964 DAG size of output: 47 [2020-11-07 05:11:37,396 WARN L194 SmtUtils]: Spent 5.52 s on a formula simplification. DAG size of input: 2308 DAG size of output: 34 [2020-11-07 05:11:39,175 WARN L194 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 1089 DAG size of output: 121 [2020-11-07 05:11:39,477 WARN L194 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 567 DAG size of output: 45 [2020-11-07 05:11:46,663 WARN L194 SmtUtils]: Spent 7.18 s on a formula simplification. DAG size of input: 1100 DAG size of output: 581 [2020-11-07 05:11:47,759 WARN L194 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 592 DAG size of output: 191 [2020-11-07 05:11:48,400 WARN L194 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 628 DAG size of output: 87 [2020-11-07 05:11:53,737 WARN L194 SmtUtils]: Spent 5.33 s on a formula simplification. DAG size of input: 2793 DAG size of output: 31 [2020-11-07 05:11:57,895 WARN L194 SmtUtils]: Spent 4.15 s on a formula simplification. DAG size of input: 1093 DAG size of output: 321 [2020-11-07 05:11:58,265 WARN L194 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 571 DAG size of output: 65 [2020-11-07 05:12:02,045 WARN L194 SmtUtils]: Spent 3.77 s on a formula simplification. DAG size of input: 1670 DAG size of output: 53 [2020-11-07 05:12:06,921 WARN L194 SmtUtils]: Spent 4.87 s on a formula simplification. DAG size of input: 1540 DAG size of output: 41 [2020-11-07 05:12:09,258 WARN L194 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 2233 DAG size of output: 31 [2020-11-07 05:12:22,723 WARN L194 SmtUtils]: Spent 13.46 s on a formula simplification that was a NOOP. DAG size: 1097 [2020-11-07 05:12:26,907 WARN L194 SmtUtils]: Spent 4.18 s on a formula simplification. DAG size of input: 1106 DAG size of output: 321 [2020-11-07 05:12:27,561 WARN L194 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 575 DAG size of output: 121 [2020-11-07 05:12:28,350 WARN L194 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 604 DAG size of output: 123 [2020-11-07 05:12:28,906 WARN L194 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 676 DAG size of output: 67 [2020-11-07 05:12:29,972 WARN L194 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 1079 DAG size of output: 39 [2020-11-07 05:12:36,677 WARN L194 SmtUtils]: Spent 6.69 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2020-11-07 05:12:37,699 WARN L194 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 1076 DAG size of output: 31 [2020-11-07 05:12:39,544 WARN L194 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 579 DAG size of output: 321 [2020-11-07 05:12:46,074 WARN L194 SmtUtils]: Spent 6.52 s on a formula simplification. DAG size of input: 2054 DAG size of output: 45 [2020-11-07 05:12:49,697 WARN L194 SmtUtils]: Spent 3.62 s on a formula simplification that was a NOOP. DAG size: 583 [2020-11-07 05:12:55,133 WARN L194 SmtUtils]: Spent 5.43 s on a formula simplification. DAG size of input: 2308 DAG size of output: 34 [2020-11-07 05:13:01,891 WARN L194 SmtUtils]: Spent 6.74 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2020-11-07 05:13:03,010 WARN L194 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 1083 DAG size of output: 53 [2020-11-07 05:13:07,912 WARN L194 SmtUtils]: Spent 4.89 s on a formula simplification. DAG size of input: 2767 DAG size of output: 31 [2020-11-07 05:13:10,577 WARN L194 SmtUtils]: Spent 2.66 s on a formula simplification. DAG size of input: 1118 DAG size of output: 189 [2020-11-07 05:13:11,155 WARN L194 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 628 DAG size of output: 87 [2020-11-07 05:13:11,859 WARN L194 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 772 DAG size of output: 55 [2020-11-07 05:13:13,263 WARN L194 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 1087 DAG size of output: 85 [2020-11-07 05:13:14,560 WARN L194 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1847 DAG size of output: 31 [2020-11-07 05:13:14,847 WARN L194 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 565 DAG size of output: 39 [2020-11-07 05:13:21,975 WARN L194 SmtUtils]: Spent 7.12 s on a formula simplification. DAG size of input: 2822 DAG size of output: 39 [2020-11-07 05:13:23,919 WARN L194 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 586 DAG size of output: 323 [2020-11-07 05:13:30,214 WARN L194 SmtUtils]: Spent 6.26 s on a formula simplification. DAG size of input: 2815 DAG size of output: 31 [2020-11-07 05:13:32,665 WARN L194 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 1091 DAG size of output: 189 [2020-11-07 05:13:33,001 WARN L194 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 53 [2020-11-07 05:13:34,965 WARN L194 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 1142 DAG size of output: 121 [2020-11-07 05:13:35,511 WARN L194 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 676 DAG size of output: 67 [2020-11-07 05:13:36,874 WARN L194 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 964 DAG size of output: 47 [2020-11-07 05:13:41,320 WARN L194 SmtUtils]: Spent 4.43 s on a formula simplification. DAG size of input: 2717 DAG size of output: 31 [2020-11-07 05:13:48,441 WARN L194 SmtUtils]: Spent 7.12 s on a formula simplification. DAG size of input: 1095 DAG size of output: 581 [2020-11-07 05:13:48,905 WARN L194 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 573 DAG size of output: 85 [2020-11-07 05:13:52,580 WARN L194 SmtUtils]: Spent 3.67 s on a formula simplification that was a NOOP. DAG size: 583 [2020-11-07 05:13:59,236 WARN L194 SmtUtils]: Spent 6.65 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2020-11-07 05:14:00,321 WARN L194 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 592 DAG size of output: 191 [2020-11-07 05:14:07,083 WARN L194 SmtUtils]: Spent 6.75 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2020-11-07 05:14:13,762 WARN L194 SmtUtils]: Spent 6.67 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2020-11-07 05:14:20,550 WARN L194 SmtUtils]: Spent 6.78 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2020-11-07 05:14:21,577 WARN L194 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 1076 DAG size of output: 31 [2020-11-07 05:14:22,617 WARN L194 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 577 DAG size of output: 189 [2020-11-07 05:14:24,219 WARN L194 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 1190 DAG size of output: 85 [2020-11-07 05:14:24,938 WARN L194 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 772 DAG size of output: 55 [2020-11-07 05:14:29,837 WARN L194 SmtUtils]: Spent 4.89 s on a formula simplification. DAG size of input: 1540 DAG size of output: 41 [2020-11-07 05:14:30,973 WARN L194 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 1081 DAG size of output: 45 [2020-11-07 05:14:36,790 WARN L194 SmtUtils]: Spent 5.80 s on a formula simplification. DAG size of input: 2807 DAG size of output: 31 [2020-11-07 05:14:40,326 WARN L194 SmtUtils]: Spent 3.53 s on a formula simplification that was a NOOP. DAG size: 581 [2020-11-07 05:14:42,272 WARN L194 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 586 DAG size of output: 323 [2020-11-07 05:14:43,054 WARN L194 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 604 DAG size of output: 123 [2020-11-07 05:14:43,653 WARN L194 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2020-11-07 05:14:44,232 WARN L194 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2020-11-07 05:14:44,380 WARN L194 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 17 [2020-11-07 05:14:47,766 WARN L194 SmtUtils]: Spent 3.35 s on a formula simplification. DAG size of input: 111 DAG size of output: 91 [2020-11-07 05:14:47,881 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 15 [2020-11-07 05:16:06,999 WARN L194 SmtUtils]: Spent 1.32 m on a formula simplification. DAG size of input: 571 DAG size of output: 551 [2020-11-07 05:16:16,553 WARN L194 SmtUtils]: Spent 9.54 s on a formula simplification. DAG size of input: 181 DAG size of output: 161 [2020-11-07 05:16:18,074 WARN L194 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2020-11-07 05:16:42,865 WARN L194 SmtUtils]: Spent 24.77 s on a formula simplification. DAG size of input: 311 DAG size of output: 291 [2020-11-07 05:16:43,445 WARN L194 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2020-11-07 05:16:43,702 WARN L194 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 23 [2020-11-07 05:21:13,757 WARN L194 SmtUtils]: Spent 4.50 m on a formula simplification. DAG size of input: 1087 DAG size of output: 1067 [2020-11-07 05:21:38,517 WARN L194 SmtUtils]: Spent 24.75 s on a formula simplification. DAG size of input: 311 DAG size of output: 291 [2020-11-07 05:21:41,840 WARN L194 SmtUtils]: Spent 3.32 s on a formula simplification. DAG size of input: 111 DAG size of output: 91 [2020-11-07 05:21:45,570 WARN L194 SmtUtils]: Spent 3.73 s on a formula simplification. DAG size of input: 113 DAG size of output: 93 [2020-11-07 05:21:46,227 WARN L194 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2020-11-07 05:22:11,052 WARN L194 SmtUtils]: Spent 24.75 s on a formula simplification. DAG size of input: 311 DAG size of output: 291 [2020-11-07 05:22:11,171 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 15 [2020-11-07 05:23:35,475 WARN L194 SmtUtils]: Spent 1.40 m on a formula simplification. DAG size of input: 573 DAG size of output: 553 [2020-11-07 05:23:35,776 WARN L194 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 23 [2020-11-07 05:23:44,404 WARN L194 SmtUtils]: Spent 8.62 s on a formula simplification. DAG size of input: 179 DAG size of output: 159 [2020-11-07 05:23:45,930 WARN L194 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2020-11-07 05:23:46,227 WARN L194 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 25 [2020-11-07 05:23:47,593 WARN L194 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 75 DAG size of output: 55