/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_o1000.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 21:56:17,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 21:56:17,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 21:56:17,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 21:56:17,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 21:56:17,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 21:56:17,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 21:56:17,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 21:56:17,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 21:56:17,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 21:56:17,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 21:56:17,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 21:56:17,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 21:56:17,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 21:56:17,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 21:56:17,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 21:56:17,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 21:56:17,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 21:56:17,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 21:56:17,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 21:56:17,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 21:56:17,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 21:56:17,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 21:56:17,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 21:56:17,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 21:56:17,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 21:56:17,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 21:56:17,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 21:56:17,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 21:56:17,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 21:56:17,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 21:56:17,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 21:56:17,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 21:56:17,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 21:56:17,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 21:56:17,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 21:56:17,460 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 21:56:17,472 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 21:56:17,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 21:56:17,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 21:56:17,474 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 21:56:17,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 21:56:17,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 21:56:17,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 21:56:17,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 21:56:17,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 21:56:17,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 21:56:17,475 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 21:56:17,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 21:56:17,476 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 21:56:17,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 21:56:17,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 21:56:17,476 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 21:56:17,477 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 21:56:17,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 21:56:17,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 21:56:17,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 21:56:17,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 21:56:17,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 21:56:17,478 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-09-04 21:56:17,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 21:56:17,967 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 21:56:17,973 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 21:56:17,976 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 21:56:17,977 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 21:56:17,978 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o1000.c [2020-09-04 21:56:18,078 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2569bb54e/887e3fe4fe634005ad2c6002e7f03aa0/FLAG79c578e94 [2020-09-04 21:56:18,627 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 21:56:18,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_o1000.c [2020-09-04 21:56:18,639 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2569bb54e/887e3fe4fe634005ad2c6002e7f03aa0/FLAG79c578e94 [2020-09-04 21:56:18,984 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2569bb54e/887e3fe4fe634005ad2c6002e7f03aa0 [2020-09-04 21:56:19,000 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 21:56:19,002 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 21:56:19,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 21:56:19,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 21:56:19,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 21:56:19,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:56:18" (1/1) ... [2020-09-04 21:56:19,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2baf6fd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:56:19, skipping insertion in model container [2020-09-04 21:56:19,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:56:18" (1/1) ... [2020-09-04 21:56:19,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 21:56:19,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 21:56:19,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:56:19,264 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 21:56:19,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:56:19,301 INFO L208 MainTranslator]: Completed translation [2020-09-04 21:56:19,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:56:19 WrapperNode [2020-09-04 21:56:19,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 21:56:19,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 21:56:19,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 21:56:19,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 21:56:19,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:56:19" (1/1) ... [2020-09-04 21:56:19,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:56:19" (1/1) ... [2020-09-04 21:56:19,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:56:19" (1/1) ... [2020-09-04 21:56:19,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:56:19" (1/1) ... [2020-09-04 21:56:19,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:56:19" (1/1) ... [2020-09-04 21:56:19,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:56:19" (1/1) ... [2020-09-04 21:56:19,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:56:19" (1/1) ... [2020-09-04 21:56:19,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 21:56:19,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 21:56:19,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 21:56:19,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 21:56:19,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:56:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 21:56:19,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 21:56:19,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 21:56:19,493 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-04 21:56:19,493 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 21:56:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-04 21:56:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 21:56:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-04 21:56:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 21:56:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 21:56:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 21:56:19,667 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 21:56:19,668 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 21:56:19,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:56:19 BoogieIcfgContainer [2020-09-04 21:56:19,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 21:56:19,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 21:56:19,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 21:56:19,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 21:56:19,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 09:56:18" (1/3) ... [2020-09-04 21:56:19,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c669bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 09:56:19, skipping insertion in model container [2020-09-04 21:56:19,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:56:19" (2/3) ... [2020-09-04 21:56:19,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c669bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 09:56:19, skipping insertion in model container [2020-09-04 21:56:19,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:56:19" (3/3) ... [2020-09-04 21:56:19,682 INFO L109 eAbstractionObserver]: Analyzing ICFG id_o1000.c [2020-09-04 21:56:19,693 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 21:56:19,703 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 21:56:19,723 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 21:56:19,749 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 21:56:19,749 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 21:56:19,749 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 21:56:19,749 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 21:56:19,749 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 21:56:19,750 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 21:56:19,750 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 21:56:19,750 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 21:56:19,765 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-04 21:56:19,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-04 21:56:19,777 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:19,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:19,778 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:19,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:19,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1651991454, now seen corresponding path program 1 times [2020-09-04 21:56:19,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:19,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517106185] [2020-09-04 21:56:19,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:20,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:20,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 21:56:20,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517106185] [2020-09-04 21:56:20,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 21:56:20,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 21:56:20,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212483687] [2020-09-04 21:56:20,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 21:56:20,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:20,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 21:56:20,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 21:56:20,190 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-09-04 21:56:20,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:20,286 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-04 21:56:20,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 21:56:20,289 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-04 21:56:20,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:20,303 INFO L225 Difference]: With dead ends: 37 [2020-09-04 21:56:20,304 INFO L226 Difference]: Without dead ends: 22 [2020-09-04 21:56:20,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 21:56:20,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-04 21:56:20,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-04 21:56:20,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-04 21:56:20,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-09-04 21:56:20,367 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2020-09-04 21:56:20,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:20,368 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-09-04 21:56:20,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 21:56:20,368 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-09-04 21:56:20,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-04 21:56:20,371 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:20,371 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:20,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 21:56:20,372 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:20,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:20,373 INFO L82 PathProgramCache]: Analyzing trace with hash 189324707, now seen corresponding path program 1 times [2020-09-04 21:56:20,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:20,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751177725] [2020-09-04 21:56:20,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:20,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:20,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:20,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:20,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:20,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 21:56:20,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751177725] [2020-09-04 21:56:20,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:20,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-04 21:56:20,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40560592] [2020-09-04 21:56:20,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 21:56:20,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:20,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 21:56:20,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 21:56:20,586 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2020-09-04 21:56:20,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:20,684 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-04 21:56:20,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 21:56:20,687 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-04 21:56:20,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:20,688 INFO L225 Difference]: With dead ends: 31 [2020-09-04 21:56:20,688 INFO L226 Difference]: Without dead ends: 26 [2020-09-04 21:56:20,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-04 21:56:20,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-04 21:56:20,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-04 21:56:20,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-04 21:56:20,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-04 21:56:20,710 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23 [2020-09-04 21:56:20,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:20,711 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-04 21:56:20,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 21:56:20,711 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-04 21:56:20,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 21:56:20,714 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:20,714 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:20,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 21:56:20,715 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:20,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:20,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1416732684, now seen corresponding path program 2 times [2020-09-04 21:56:20,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:20,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023828594] [2020-09-04 21:56:20,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:20,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:20,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:20,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:21,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:21,086 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-04 21:56:21,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023828594] [2020-09-04 21:56:21,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:21,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-04 21:56:21,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026886694] [2020-09-04 21:56:21,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 21:56:21,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:21,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 21:56:21,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-04 21:56:21,091 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2020-09-04 21:56:21,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:21,225 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-09-04 21:56:21,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 21:56:21,226 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-09-04 21:56:21,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:21,228 INFO L225 Difference]: With dead ends: 35 [2020-09-04 21:56:21,228 INFO L226 Difference]: Without dead ends: 30 [2020-09-04 21:56:21,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-04 21:56:21,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-04 21:56:21,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-04 21:56:21,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-04 21:56:21,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-04 21:56:21,239 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 30 [2020-09-04 21:56:21,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:21,239 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-04 21:56:21,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 21:56:21,240 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-04 21:56:21,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-04 21:56:21,241 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:21,241 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:21,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 21:56:21,242 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:21,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:21,242 INFO L82 PathProgramCache]: Analyzing trace with hash -209476043, now seen corresponding path program 3 times [2020-09-04 21:56:21,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:21,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049186462] [2020-09-04 21:56:21,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:21,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:21,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:21,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:21,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:21,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:21,561 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-04 21:56:21,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049186462] [2020-09-04 21:56:21,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:21,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-04 21:56:21,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539558045] [2020-09-04 21:56:21,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 21:56:21,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:21,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 21:56:21,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-04 21:56:21,567 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-09-04 21:56:21,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:21,734 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-04 21:56:21,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 21:56:21,734 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-09-04 21:56:21,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:21,736 INFO L225 Difference]: With dead ends: 39 [2020-09-04 21:56:21,736 INFO L226 Difference]: Without dead ends: 34 [2020-09-04 21:56:21,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-04 21:56:21,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-04 21:56:21,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-09-04 21:56:21,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-04 21:56:21,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-09-04 21:56:21,747 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 37 [2020-09-04 21:56:21,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:21,747 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-09-04 21:56:21,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 21:56:21,747 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-09-04 21:56:21,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-04 21:56:21,749 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:21,749 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:21,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 21:56:21,750 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:21,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:21,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1007399302, now seen corresponding path program 4 times [2020-09-04 21:56:21,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:21,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955132836] [2020-09-04 21:56:21,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:21,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:21,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:21,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:21,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:21,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:22,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:22,067 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-04 21:56:22,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955132836] [2020-09-04 21:56:22,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:22,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-04 21:56:22,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036635607] [2020-09-04 21:56:22,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 21:56:22,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:22,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 21:56:22,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-04 21:56:22,070 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 13 states. [2020-09-04 21:56:22,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:22,280 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-09-04 21:56:22,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-04 21:56:22,281 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-09-04 21:56:22,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:22,283 INFO L225 Difference]: With dead ends: 43 [2020-09-04 21:56:22,283 INFO L226 Difference]: Without dead ends: 38 [2020-09-04 21:56:22,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-09-04 21:56:22,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-04 21:56:22,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-04 21:56:22,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-04 21:56:22,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-04 21:56:22,294 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 44 [2020-09-04 21:56:22,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:22,294 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-04 21:56:22,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 21:56:22,295 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-04 21:56:22,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-04 21:56:22,297 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:22,297 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:22,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 21:56:22,297 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:22,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:22,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1787659065, now seen corresponding path program 5 times [2020-09-04 21:56:22,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:22,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079810801] [2020-09-04 21:56:22,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:22,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:22,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:22,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:22,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:22,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:22,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:22,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:22,682 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-04 21:56:22,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079810801] [2020-09-04 21:56:22,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:22,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-04 21:56:22,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483947470] [2020-09-04 21:56:22,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 21:56:22,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:22,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 21:56:22,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-04 21:56:22,686 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 15 states. [2020-09-04 21:56:22,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:22,915 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-09-04 21:56:22,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 21:56:22,916 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-09-04 21:56:22,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:22,918 INFO L225 Difference]: With dead ends: 47 [2020-09-04 21:56:22,918 INFO L226 Difference]: Without dead ends: 42 [2020-09-04 21:56:22,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-09-04 21:56:22,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-04 21:56:22,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-04 21:56:22,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-04 21:56:22,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-04 21:56:22,928 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 51 [2020-09-04 21:56:22,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:22,929 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-04 21:56:22,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 21:56:22,929 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-04 21:56:22,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-04 21:56:22,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:22,931 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:22,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 21:56:22,931 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:22,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:22,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1360883432, now seen corresponding path program 6 times [2020-09-04 21:56:22,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:22,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211368558] [2020-09-04 21:56:22,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:22,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:23,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:23,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:23,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:23,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:23,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:23,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:23,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:23,421 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-04 21:56:23,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211368558] [2020-09-04 21:56:23,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:23,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-04 21:56:23,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043614210] [2020-09-04 21:56:23,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-04 21:56:23,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:23,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-04 21:56:23,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-04 21:56:23,425 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 17 states. [2020-09-04 21:56:23,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:23,752 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-04 21:56:23,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-04 21:56:23,753 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-04 21:56:23,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:23,754 INFO L225 Difference]: With dead ends: 51 [2020-09-04 21:56:23,755 INFO L226 Difference]: Without dead ends: 46 [2020-09-04 21:56:23,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2020-09-04 21:56:23,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-04 21:56:23,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-04 21:56:23,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-04 21:56:23,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-09-04 21:56:23,765 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 58 [2020-09-04 21:56:23,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:23,766 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-09-04 21:56:23,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-04 21:56:23,766 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-09-04 21:56:23,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-04 21:56:23,768 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:23,768 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:23,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 21:56:23,769 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:23,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:23,769 INFO L82 PathProgramCache]: Analyzing trace with hash -807968423, now seen corresponding path program 7 times [2020-09-04 21:56:23,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:23,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390861456] [2020-09-04 21:56:23,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:23,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:23,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:23,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:23,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:24,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:24,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:24,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:24,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:24,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:24,314 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-04 21:56:24,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390861456] [2020-09-04 21:56:24,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:24,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-04 21:56:24,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862046848] [2020-09-04 21:56:24,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-04 21:56:24,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:24,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-04 21:56:24,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-09-04 21:56:24,319 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 19 states. [2020-09-04 21:56:24,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:24,677 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-09-04 21:56:24,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-04 21:56:24,678 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-04 21:56:24,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:24,680 INFO L225 Difference]: With dead ends: 55 [2020-09-04 21:56:24,682 INFO L226 Difference]: Without dead ends: 50 [2020-09-04 21:56:24,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2020-09-04 21:56:24,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-04 21:56:24,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-04 21:56:24,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-04 21:56:24,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-04 21:56:24,697 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 65 [2020-09-04 21:56:24,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:24,697 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-04 21:56:24,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-04 21:56:24,697 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-04 21:56:24,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-04 21:56:24,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:24,700 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:24,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 21:56:24,701 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:24,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:24,701 INFO L82 PathProgramCache]: Analyzing trace with hash -705364310, now seen corresponding path program 8 times [2020-09-04 21:56:24,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:24,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507641011] [2020-09-04 21:56:24,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:24,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:24,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:24,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:24,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:24,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:25,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:25,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:25,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:25,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:25,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:25,376 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-04 21:56:25,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507641011] [2020-09-04 21:56:25,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:25,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-04 21:56:25,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265286024] [2020-09-04 21:56:25,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-04 21:56:25,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:25,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-04 21:56:25,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-09-04 21:56:25,385 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states. [2020-09-04 21:56:25,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:25,897 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-04 21:56:25,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-04 21:56:25,897 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-09-04 21:56:25,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:25,899 INFO L225 Difference]: With dead ends: 59 [2020-09-04 21:56:25,899 INFO L226 Difference]: Without dead ends: 54 [2020-09-04 21:56:25,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2020-09-04 21:56:25,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-04 21:56:25,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-04 21:56:25,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-04 21:56:25,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-09-04 21:56:25,909 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 72 [2020-09-04 21:56:25,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:25,909 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-09-04 21:56:25,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-04 21:56:25,910 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-09-04 21:56:25,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-04 21:56:25,911 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:25,911 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:25,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 21:56:25,911 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:25,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:25,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1418439701, now seen corresponding path program 9 times [2020-09-04 21:56:25,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:25,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870733591] [2020-09-04 21:56:25,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:25,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:25,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:26,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:26,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:26,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:26,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:26,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:26,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:26,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:26,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:26,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-04 21:56:26,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870733591] [2020-09-04 21:56:26,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:26,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-04 21:56:26,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84354770] [2020-09-04 21:56:26,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-04 21:56:26,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:26,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-04 21:56:26,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-09-04 21:56:26,681 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 23 states. [2020-09-04 21:56:27,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:27,293 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2020-09-04 21:56:27,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-04 21:56:27,294 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 79 [2020-09-04 21:56:27,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:27,295 INFO L225 Difference]: With dead ends: 63 [2020-09-04 21:56:27,295 INFO L226 Difference]: Without dead ends: 58 [2020-09-04 21:56:27,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2020-09-04 21:56:27,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-04 21:56:27,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-04 21:56:27,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-04 21:56:27,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-04 21:56:27,318 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 79 [2020-09-04 21:56:27,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:27,319 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-04 21:56:27,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-04 21:56:27,319 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-04 21:56:27,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-04 21:56:27,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:27,324 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:27,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 21:56:27,325 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:27,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:27,325 INFO L82 PathProgramCache]: Analyzing trace with hash -182126020, now seen corresponding path program 10 times [2020-09-04 21:56:27,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:27,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503764760] [2020-09-04 21:56:27,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:27,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:27,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:27,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:27,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:27,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:27,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:27,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:27,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:27,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:27,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:28,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:28,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:28,156 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-04 21:56:28,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503764760] [2020-09-04 21:56:28,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:28,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-04 21:56:28,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263015504] [2020-09-04 21:56:28,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-04 21:56:28,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:28,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-04 21:56:28,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-09-04 21:56:28,161 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 25 states. [2020-09-04 21:56:28,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:28,826 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-09-04 21:56:28,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-04 21:56:28,827 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-09-04 21:56:28,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:28,829 INFO L225 Difference]: With dead ends: 67 [2020-09-04 21:56:28,829 INFO L226 Difference]: Without dead ends: 62 [2020-09-04 21:56:28,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2020-09-04 21:56:28,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-04 21:56:28,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-04 21:56:28,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-04 21:56:28,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-09-04 21:56:28,852 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 86 [2020-09-04 21:56:28,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:28,852 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-09-04 21:56:28,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-04 21:56:28,852 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-09-04 21:56:28,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-04 21:56:28,856 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:28,857 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:28,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 21:56:28,858 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:28,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:28,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1527469181, now seen corresponding path program 11 times [2020-09-04 21:56:28,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:28,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107351776] [2020-09-04 21:56:28,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:28,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:28,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:29,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:29,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:29,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:29,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:29,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:29,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:29,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:29,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:29,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:29,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:29,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:29,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:29,904 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-04 21:56:29,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107351776] [2020-09-04 21:56:29,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:29,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-04 21:56:29,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294434453] [2020-09-04 21:56:29,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-04 21:56:29,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:29,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-04 21:56:29,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-09-04 21:56:29,908 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 27 states. [2020-09-04 21:56:30,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:30,613 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-04 21:56:30,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-04 21:56:30,614 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 93 [2020-09-04 21:56:30,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:30,615 INFO L225 Difference]: With dead ends: 71 [2020-09-04 21:56:30,616 INFO L226 Difference]: Without dead ends: 66 [2020-09-04 21:56:30,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=1383, Unknown=0, NotChecked=0, Total=1482 [2020-09-04 21:56:30,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-04 21:56:30,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-04 21:56:30,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-04 21:56:30,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-09-04 21:56:30,632 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 93 [2020-09-04 21:56:30,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:30,633 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-09-04 21:56:30,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-04 21:56:30,633 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-09-04 21:56:30,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-04 21:56:30,634 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:30,635 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:30,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 21:56:30,635 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:30,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:30,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1034648626, now seen corresponding path program 12 times [2020-09-04 21:56:30,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:30,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603957222] [2020-09-04 21:56:30,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:30,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:30,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:30,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:30,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:30,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:31,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:31,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:31,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:31,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:31,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:31,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:31,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:31,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:31,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:31,933 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-09-04 21:56:31,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603957222] [2020-09-04 21:56:31,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:31,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-04 21:56:31,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814077723] [2020-09-04 21:56:31,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-04 21:56:31,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:31,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-04 21:56:31,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-09-04 21:56:31,938 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 29 states. [2020-09-04 21:56:32,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:32,831 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2020-09-04 21:56:32,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-04 21:56:32,831 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 100 [2020-09-04 21:56:32,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:32,833 INFO L225 Difference]: With dead ends: 75 [2020-09-04 21:56:32,833 INFO L226 Difference]: Without dead ends: 70 [2020-09-04 21:56:32,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=107, Invalid=1615, Unknown=0, NotChecked=0, Total=1722 [2020-09-04 21:56:32,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-04 21:56:32,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-04 21:56:32,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-04 21:56:32,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-04 21:56:32,854 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 100 [2020-09-04 21:56:32,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:32,855 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-04 21:56:32,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-04 21:56:32,855 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-04 21:56:32,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-04 21:56:32,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:32,857 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:32,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 21:56:32,857 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:32,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:32,858 INFO L82 PathProgramCache]: Analyzing trace with hash 996041487, now seen corresponding path program 13 times [2020-09-04 21:56:32,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:32,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247483726] [2020-09-04 21:56:32,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:32,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:32,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:33,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:33,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:33,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:33,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:33,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:33,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:33,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:33,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:33,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:33,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:33,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:33,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:33,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:34,103 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-09-04 21:56:34,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247483726] [2020-09-04 21:56:34,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:34,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-04 21:56:34,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356644129] [2020-09-04 21:56:34,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-04 21:56:34,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:34,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-04 21:56:34,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-09-04 21:56:34,107 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 31 states. [2020-09-04 21:56:35,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:35,190 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-04 21:56:35,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-09-04 21:56:35,192 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 107 [2020-09-04 21:56:35,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:35,194 INFO L225 Difference]: With dead ends: 79 [2020-09-04 21:56:35,194 INFO L226 Difference]: Without dead ends: 74 [2020-09-04 21:56:35,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=115, Invalid=1865, Unknown=0, NotChecked=0, Total=1980 [2020-09-04 21:56:35,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-04 21:56:35,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-04 21:56:35,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-04 21:56:35,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2020-09-04 21:56:35,206 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 107 [2020-09-04 21:56:35,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:35,207 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2020-09-04 21:56:35,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-04 21:56:35,207 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2020-09-04 21:56:35,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-04 21:56:35,209 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:35,209 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:35,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-04 21:56:35,210 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:35,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:35,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1701157728, now seen corresponding path program 14 times [2020-09-04 21:56:35,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:35,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641829990] [2020-09-04 21:56:35,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:35,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:35,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:35,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:35,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:35,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:35,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:35,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:35,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:35,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:35,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:36,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:36,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:36,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:36,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:36,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:36,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:36,820 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-09-04 21:56:36,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641829990] [2020-09-04 21:56:36,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:36,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-09-04 21:56:36,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999163949] [2020-09-04 21:56:36,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-09-04 21:56:36,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:36,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-09-04 21:56:36,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2020-09-04 21:56:36,826 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand 33 states. [2020-09-04 21:56:38,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:38,072 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2020-09-04 21:56:38,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-09-04 21:56:38,073 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 114 [2020-09-04 21:56:38,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:38,074 INFO L225 Difference]: With dead ends: 83 [2020-09-04 21:56:38,074 INFO L226 Difference]: Without dead ends: 78 [2020-09-04 21:56:38,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=123, Invalid=2133, Unknown=0, NotChecked=0, Total=2256 [2020-09-04 21:56:38,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-04 21:56:38,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-09-04 21:56:38,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-04 21:56:38,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-09-04 21:56:38,084 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 114 [2020-09-04 21:56:38,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:38,085 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-09-04 21:56:38,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-09-04 21:56:38,085 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-09-04 21:56:38,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-04 21:56:38,087 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:38,087 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:38,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-04 21:56:38,088 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:38,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:38,088 INFO L82 PathProgramCache]: Analyzing trace with hash -751861855, now seen corresponding path program 15 times [2020-09-04 21:56:38,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:38,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553894373] [2020-09-04 21:56:38,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:38,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:38,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:38,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:38,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:38,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:38,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:38,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:38,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:38,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:38,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:38,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:38,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:38,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:38,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:39,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:39,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:39,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:39,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:39,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:39,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:39,748 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-09-04 21:56:39,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553894373] [2020-09-04 21:56:39,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:39,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-09-04 21:56:39,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425863014] [2020-09-04 21:56:39,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-09-04 21:56:39,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:39,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-09-04 21:56:39,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2020-09-04 21:56:39,751 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 35 states. [2020-09-04 21:56:41,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:41,188 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2020-09-04 21:56:41,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-09-04 21:56:41,190 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 121 [2020-09-04 21:56:41,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:41,192 INFO L225 Difference]: With dead ends: 87 [2020-09-04 21:56:41,192 INFO L226 Difference]: Without dead ends: 82 [2020-09-04 21:56:41,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=131, Invalid=2419, Unknown=0, NotChecked=0, Total=2550 [2020-09-04 21:56:41,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-04 21:56:41,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-09-04 21:56:41,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-04 21:56:41,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2020-09-04 21:56:41,204 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 121 [2020-09-04 21:56:41,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:41,205 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2020-09-04 21:56:41,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-09-04 21:56:41,205 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2020-09-04 21:56:41,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-04 21:56:41,206 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:41,207 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:41,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-04 21:56:41,207 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:41,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:41,208 INFO L82 PathProgramCache]: Analyzing trace with hash 2017083634, now seen corresponding path program 16 times [2020-09-04 21:56:41,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:41,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415116877] [2020-09-04 21:56:41,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:41,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:41,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:41,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:41,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:41,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:41,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:41,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:41,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:41,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:41,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:42,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:42,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:42,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:42,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:42,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:42,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:42,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:42,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:42,994 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-09-04 21:56:42,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415116877] [2020-09-04 21:56:42,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:42,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-09-04 21:56:42,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133179518] [2020-09-04 21:56:42,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-09-04 21:56:42,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:42,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-09-04 21:56:42,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=1261, Unknown=0, NotChecked=0, Total=1332 [2020-09-04 21:56:42,998 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand 37 states. [2020-09-04 21:56:44,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:44,502 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2020-09-04 21:56:44,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-09-04 21:56:44,503 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 128 [2020-09-04 21:56:44,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:44,505 INFO L225 Difference]: With dead ends: 91 [2020-09-04 21:56:44,505 INFO L226 Difference]: Without dead ends: 86 [2020-09-04 21:56:44,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=139, Invalid=2723, Unknown=0, NotChecked=0, Total=2862 [2020-09-04 21:56:44,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-04 21:56:44,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-09-04 21:56:44,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-04 21:56:44,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2020-09-04 21:56:44,514 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 128 [2020-09-04 21:56:44,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:44,515 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2020-09-04 21:56:44,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-09-04 21:56:44,515 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2020-09-04 21:56:44,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-04 21:56:44,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:44,516 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:44,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-04 21:56:44,517 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:44,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:44,517 INFO L82 PathProgramCache]: Analyzing trace with hash -750736845, now seen corresponding path program 17 times [2020-09-04 21:56:44,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:44,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458915316] [2020-09-04 21:56:44,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:44,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:44,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:44,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:44,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:44,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:44,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:44,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:44,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:45,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:45,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:45,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:45,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:45,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:45,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:45,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:45,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:45,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:45,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:45,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:46,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:46,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:46,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-09-04 21:56:46,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458915316] [2020-09-04 21:56:46,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:46,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-09-04 21:56:46,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195571366] [2020-09-04 21:56:46,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-09-04 21:56:46,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:46,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-09-04 21:56:46,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=1407, Unknown=0, NotChecked=0, Total=1482 [2020-09-04 21:56:46,367 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand 39 states. [2020-09-04 21:56:48,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:48,065 INFO L93 Difference]: Finished difference Result 95 states and 96 transitions. [2020-09-04 21:56:48,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-09-04 21:56:48,066 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 135 [2020-09-04 21:56:48,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:48,067 INFO L225 Difference]: With dead ends: 95 [2020-09-04 21:56:48,067 INFO L226 Difference]: Without dead ends: 90 [2020-09-04 21:56:48,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=147, Invalid=3045, Unknown=0, NotChecked=0, Total=3192 [2020-09-04 21:56:48,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-04 21:56:48,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-09-04 21:56:48,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-04 21:56:48,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2020-09-04 21:56:48,079 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 135 [2020-09-04 21:56:48,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:48,079 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2020-09-04 21:56:48,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-09-04 21:56:48,080 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2020-09-04 21:56:48,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-04 21:56:48,081 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:48,081 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:48,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-04 21:56:48,081 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:48,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:48,082 INFO L82 PathProgramCache]: Analyzing trace with hash 112489604, now seen corresponding path program 18 times [2020-09-04 21:56:48,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:48,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933526973] [2020-09-04 21:56:48,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:48,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:48,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:48,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:48,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:48,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:48,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:48,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:48,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:48,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:48,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:48,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:49,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:49,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:49,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:49,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:49,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:49,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:49,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:49,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:49,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:50,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-09-04 21:56:50,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933526973] [2020-09-04 21:56:50,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:50,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-09-04 21:56:50,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95405360] [2020-09-04 21:56:50,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-09-04 21:56:50,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:50,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-09-04 21:56:50,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1561, Unknown=0, NotChecked=0, Total=1640 [2020-09-04 21:56:50,141 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand 41 states. [2020-09-04 21:56:52,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:52,069 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2020-09-04 21:56:52,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-09-04 21:56:52,069 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 142 [2020-09-04 21:56:52,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:52,071 INFO L225 Difference]: With dead ends: 99 [2020-09-04 21:56:52,071 INFO L226 Difference]: Without dead ends: 94 [2020-09-04 21:56:52,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=155, Invalid=3385, Unknown=0, NotChecked=0, Total=3540 [2020-09-04 21:56:52,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-04 21:56:52,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2020-09-04 21:56:52,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-04 21:56:52,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2020-09-04 21:56:52,088 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 142 [2020-09-04 21:56:52,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:52,089 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2020-09-04 21:56:52,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-09-04 21:56:52,089 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2020-09-04 21:56:52,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-04 21:56:52,090 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:52,090 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:52,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-04 21:56:52,091 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:52,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:52,091 INFO L82 PathProgramCache]: Analyzing trace with hash 374596293, now seen corresponding path program 19 times [2020-09-04 21:56:52,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:52,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664895494] [2020-09-04 21:56:52,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:52,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:52,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:52,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:52,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:52,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:52,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:52,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:52,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:52,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:52,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:53,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:53,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:53,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:53,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:53,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:53,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:53,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:53,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:53,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:53,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:54,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:54,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:54,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-09-04 21:56:54,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664895494] [2020-09-04 21:56:54,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:54,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-09-04 21:56:54,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73034378] [2020-09-04 21:56:54,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-09-04 21:56:54,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:54,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-09-04 21:56:54,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2020-09-04 21:56:54,395 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand 43 states. [2020-09-04 21:56:56,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:56:56,523 INFO L93 Difference]: Finished difference Result 103 states and 104 transitions. [2020-09-04 21:56:56,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-09-04 21:56:56,524 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 149 [2020-09-04 21:56:56,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:56:56,528 INFO L225 Difference]: With dead ends: 103 [2020-09-04 21:56:56,528 INFO L226 Difference]: Without dead ends: 98 [2020-09-04 21:56:56,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=163, Invalid=3743, Unknown=0, NotChecked=0, Total=3906 [2020-09-04 21:56:56,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-04 21:56:56,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-09-04 21:56:56,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-04 21:56:56,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2020-09-04 21:56:56,538 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 149 [2020-09-04 21:56:56,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:56:56,539 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2020-09-04 21:56:56,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-09-04 21:56:56,539 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2020-09-04 21:56:56,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-04 21:56:56,541 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:56:56,541 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:56:56,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-04 21:56:56,541 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:56:56,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:56:56,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1900661226, now seen corresponding path program 20 times [2020-09-04 21:56:56,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:56:56,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074108264] [2020-09-04 21:56:56,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:56:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:56,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:56:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:56,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:56:56,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:56,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:56,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:56,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:56,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:57,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:57,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:57,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:57,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:57,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:57,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:57,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:57,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:57,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:57,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:58,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:58,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:58,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:58,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:58,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:58,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:56:58,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:56:59,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-09-04 21:56:59,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074108264] [2020-09-04 21:56:59,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:56:59,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-09-04 21:56:59,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331830789] [2020-09-04 21:56:59,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-09-04 21:56:59,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:56:59,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-09-04 21:56:59,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2020-09-04 21:56:59,012 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand 45 states. [2020-09-04 21:57:01,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:57:01,360 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2020-09-04 21:57:01,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-09-04 21:57:01,361 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 156 [2020-09-04 21:57:01,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:57:01,362 INFO L225 Difference]: With dead ends: 107 [2020-09-04 21:57:01,362 INFO L226 Difference]: Without dead ends: 102 [2020-09-04 21:57:01,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=171, Invalid=4119, Unknown=0, NotChecked=0, Total=4290 [2020-09-04 21:57:01,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-04 21:57:01,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-09-04 21:57:01,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-04 21:57:01,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2020-09-04 21:57:01,372 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 156 [2020-09-04 21:57:01,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:57:01,372 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 103 transitions. [2020-09-04 21:57:01,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-09-04 21:57:01,373 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 103 transitions. [2020-09-04 21:57:01,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-04 21:57:01,374 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:57:01,375 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:57:01,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-04 21:57:01,375 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:57:01,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:57:01,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1591006889, now seen corresponding path program 21 times [2020-09-04 21:57:01,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:57:01,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505071418] [2020-09-04 21:57:01,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:57:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:01,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:57:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:01,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:57:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:01,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:01,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:01,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:01,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:01,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:01,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:01,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:02,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:02,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:02,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:02,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:02,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:02,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:02,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:02,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:03,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:03,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:03,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:03,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:03,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:03,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:03,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:04,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 882 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2020-09-04 21:57:04,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505071418] [2020-09-04 21:57:04,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:57:04,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-09-04 21:57:04,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723512192] [2020-09-04 21:57:04,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-09-04 21:57:04,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:57:04,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-09-04 21:57:04,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=2071, Unknown=0, NotChecked=0, Total=2162 [2020-09-04 21:57:04,161 INFO L87 Difference]: Start difference. First operand 102 states and 103 transitions. Second operand 47 states. [2020-09-04 21:57:06,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:57:06,665 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2020-09-04 21:57:06,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-09-04 21:57:06,672 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 163 [2020-09-04 21:57:06,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:57:06,674 INFO L225 Difference]: With dead ends: 111 [2020-09-04 21:57:06,674 INFO L226 Difference]: Without dead ends: 106 [2020-09-04 21:57:06,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=179, Invalid=4513, Unknown=0, NotChecked=0, Total=4692 [2020-09-04 21:57:06,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-04 21:57:06,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-09-04 21:57:06,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-04 21:57:06,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2020-09-04 21:57:06,690 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 163 [2020-09-04 21:57:06,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:57:06,690 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2020-09-04 21:57:06,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-09-04 21:57:06,690 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2020-09-04 21:57:06,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-04 21:57:06,693 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:57:06,693 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:57:06,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-04 21:57:06,693 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:57:06,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:57:06,694 INFO L82 PathProgramCache]: Analyzing trace with hash 2196904, now seen corresponding path program 22 times [2020-09-04 21:57:06,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:57:06,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260373647] [2020-09-04 21:57:06,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:57:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:06,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:57:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:06,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:57:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:06,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:06,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:07,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:07,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:07,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:07,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:07,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:07,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:07,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:07,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:07,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:07,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:08,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:08,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:08,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:08,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:08,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:08,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:08,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:09,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:09,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:09,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:09,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2020-09-04 21:57:09,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260373647] [2020-09-04 21:57:09,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:57:09,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-09-04 21:57:09,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600522587] [2020-09-04 21:57:09,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-09-04 21:57:09,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:57:09,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-09-04 21:57:09,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=2257, Unknown=0, NotChecked=0, Total=2352 [2020-09-04 21:57:09,602 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand 49 states. [2020-09-04 21:57:12,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:57:12,405 INFO L93 Difference]: Finished difference Result 115 states and 116 transitions. [2020-09-04 21:57:12,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-09-04 21:57:12,406 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 170 [2020-09-04 21:57:12,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:57:12,408 INFO L225 Difference]: With dead ends: 115 [2020-09-04 21:57:12,408 INFO L226 Difference]: Without dead ends: 110 [2020-09-04 21:57:12,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=187, Invalid=4925, Unknown=0, NotChecked=0, Total=5112 [2020-09-04 21:57:12,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-04 21:57:12,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-09-04 21:57:12,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-04 21:57:12,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 111 transitions. [2020-09-04 21:57:12,417 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 111 transitions. Word has length 170 [2020-09-04 21:57:12,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:57:12,418 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 111 transitions. [2020-09-04 21:57:12,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-09-04 21:57:12,418 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 111 transitions. [2020-09-04 21:57:12,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-04 21:57:12,419 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:57:12,419 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:57:12,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-04 21:57:12,420 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:57:12,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:57:12,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1568113175, now seen corresponding path program 23 times [2020-09-04 21:57:12,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:57:12,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369497626] [2020-09-04 21:57:12,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:57:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:12,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:57:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:12,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:57:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:12,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:12,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:12,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:12,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:12,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:12,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:13,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:13,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:13,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:13,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:13,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:13,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:13,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:13,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:13,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:14,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:14,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:14,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:14,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:14,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:14,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:14,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:15,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:15,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:15,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1058 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-09-04 21:57:15,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369497626] [2020-09-04 21:57:15,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:57:15,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-09-04 21:57:15,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572264199] [2020-09-04 21:57:15,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-09-04 21:57:15,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:57:15,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-09-04 21:57:15,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=2451, Unknown=0, NotChecked=0, Total=2550 [2020-09-04 21:57:15,535 INFO L87 Difference]: Start difference. First operand 110 states and 111 transitions. Second operand 51 states. [2020-09-04 21:57:18,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:57:18,571 INFO L93 Difference]: Finished difference Result 119 states and 120 transitions. [2020-09-04 21:57:18,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-09-04 21:57:18,572 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 177 [2020-09-04 21:57:18,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:57:18,573 INFO L225 Difference]: With dead ends: 119 [2020-09-04 21:57:18,573 INFO L226 Difference]: Without dead ends: 114 [2020-09-04 21:57:18,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=195, Invalid=5355, Unknown=0, NotChecked=0, Total=5550 [2020-09-04 21:57:18,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-04 21:57:18,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-09-04 21:57:18,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-04 21:57:18,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2020-09-04 21:57:18,583 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 177 [2020-09-04 21:57:18,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:57:18,583 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 115 transitions. [2020-09-04 21:57:18,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-09-04 21:57:18,583 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 115 transitions. [2020-09-04 21:57:18,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-04 21:57:18,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:57:18,585 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:57:18,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-04 21:57:18,585 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:57:18,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:57:18,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1126669510, now seen corresponding path program 24 times [2020-09-04 21:57:18,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:57:18,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316978319] [2020-09-04 21:57:18,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:57:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:18,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:57:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:18,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:57:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:18,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:18,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:18,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:19,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:19,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:19,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:19,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:19,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:19,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:19,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:19,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:19,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:20,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:20,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:20,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:20,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:20,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:20,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:20,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:21,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:21,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:21,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:21,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:21,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:22,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 1152 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2020-09-04 21:57:22,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316978319] [2020-09-04 21:57:22,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:57:22,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-09-04 21:57:22,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185251483] [2020-09-04 21:57:22,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-09-04 21:57:22,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:57:22,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-09-04 21:57:22,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=2653, Unknown=0, NotChecked=0, Total=2756 [2020-09-04 21:57:22,016 INFO L87 Difference]: Start difference. First operand 114 states and 115 transitions. Second operand 53 states. [2020-09-04 21:57:25,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:57:25,305 INFO L93 Difference]: Finished difference Result 123 states and 124 transitions. [2020-09-04 21:57:25,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-09-04 21:57:25,306 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 184 [2020-09-04 21:57:25,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:57:25,308 INFO L225 Difference]: With dead ends: 123 [2020-09-04 21:57:25,308 INFO L226 Difference]: Without dead ends: 118 [2020-09-04 21:57:25,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=203, Invalid=5803, Unknown=0, NotChecked=0, Total=6006 [2020-09-04 21:57:25,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-09-04 21:57:25,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-09-04 21:57:25,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-04 21:57:25,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2020-09-04 21:57:25,318 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 184 [2020-09-04 21:57:25,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:57:25,318 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions. [2020-09-04 21:57:25,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-09-04 21:57:25,318 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions. [2020-09-04 21:57:25,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-04 21:57:25,319 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:57:25,319 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:57:25,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-04 21:57:25,320 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:57:25,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:57:25,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1932386427, now seen corresponding path program 25 times [2020-09-04 21:57:25,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:57:25,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41830610] [2020-09-04 21:57:25,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:57:25,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:25,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:57:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:25,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:57:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:25,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:25,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:25,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:25,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:25,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:25,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:26,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:26,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:26,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:26,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:26,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:26,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:26,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:26,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:27,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:27,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:27,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:27,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:27,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:27,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:27,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:27,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:27,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:28,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:28,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:28,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:28,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:28,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 1250 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2020-09-04 21:57:28,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41830610] [2020-09-04 21:57:28,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:57:28,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-09-04 21:57:28,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279134415] [2020-09-04 21:57:28,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-09-04 21:57:28,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:57:28,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-09-04 21:57:28,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2020-09-04 21:57:28,953 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand 55 states. [2020-09-04 21:57:32,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:57:32,541 INFO L93 Difference]: Finished difference Result 127 states and 128 transitions. [2020-09-04 21:57:32,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-09-04 21:57:32,542 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 191 [2020-09-04 21:57:32,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:57:32,543 INFO L225 Difference]: With dead ends: 127 [2020-09-04 21:57:32,543 INFO L226 Difference]: Without dead ends: 122 [2020-09-04 21:57:32,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=211, Invalid=6269, Unknown=0, NotChecked=0, Total=6480 [2020-09-04 21:57:32,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-04 21:57:32,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-09-04 21:57:32,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-04 21:57:32,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 123 transitions. [2020-09-04 21:57:32,552 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 123 transitions. Word has length 191 [2020-09-04 21:57:32,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:57:32,553 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 123 transitions. [2020-09-04 21:57:32,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-09-04 21:57:32,553 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 123 transitions. [2020-09-04 21:57:32,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-04 21:57:32,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:57:32,555 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:57:32,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-09-04 21:57:32,555 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:57:32,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:57:32,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1732456756, now seen corresponding path program 26 times [2020-09-04 21:57:32,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:57:32,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373517943] [2020-09-04 21:57:32,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:57:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:32,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:57:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:32,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:57:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:32,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:32,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:32,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:33,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:33,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:33,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:33,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:33,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:33,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:33,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:33,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:34,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:34,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:34,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:34,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:34,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:34,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:34,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:34,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:35,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:35,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:35,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:35,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:35,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:35,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:36,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:36,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:36,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:36,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2020-09-04 21:57:36,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373517943] [2020-09-04 21:57:36,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:57:36,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-09-04 21:57:36,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716174372] [2020-09-04 21:57:36,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-09-04 21:57:36,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:57:36,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-09-04 21:57:36,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=3081, Unknown=0, NotChecked=0, Total=3192 [2020-09-04 21:57:36,637 INFO L87 Difference]: Start difference. First operand 122 states and 123 transitions. Second operand 57 states. [2020-09-04 21:57:40,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:57:40,474 INFO L93 Difference]: Finished difference Result 131 states and 132 transitions. [2020-09-04 21:57:40,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-09-04 21:57:40,475 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 198 [2020-09-04 21:57:40,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:57:40,477 INFO L225 Difference]: With dead ends: 131 [2020-09-04 21:57:40,477 INFO L226 Difference]: Without dead ends: 126 [2020-09-04 21:57:40,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=219, Invalid=6753, Unknown=0, NotChecked=0, Total=6972 [2020-09-04 21:57:40,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-04 21:57:40,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-09-04 21:57:40,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-04 21:57:40,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2020-09-04 21:57:40,488 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 198 [2020-09-04 21:57:40,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:57:40,488 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2020-09-04 21:57:40,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-09-04 21:57:40,488 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2020-09-04 21:57:40,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-04 21:57:40,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:57:40,490 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:57:40,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-09-04 21:57:40,490 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:57:40,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:57:40,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1780657907, now seen corresponding path program 27 times [2020-09-04 21:57:40,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:57:40,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971770923] [2020-09-04 21:57:40,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:57:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:40,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:57:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:40,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:57:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:40,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:40,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:40,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:40,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:41,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:41,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:41,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:41,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:41,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:41,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:41,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:41,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:41,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:42,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:42,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:42,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:42,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:42,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:42,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:42,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:42,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:43,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:43,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:43,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:43,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:43,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:43,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:44,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:44,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:44,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 1458 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2020-09-04 21:57:44,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971770923] [2020-09-04 21:57:44,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:57:44,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-09-04 21:57:44,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313845316] [2020-09-04 21:57:44,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-09-04 21:57:44,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:57:44,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-09-04 21:57:44,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=3307, Unknown=0, NotChecked=0, Total=3422 [2020-09-04 21:57:44,776 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand 59 states. [2020-09-04 21:57:48,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:57:48,994 INFO L93 Difference]: Finished difference Result 135 states and 136 transitions. [2020-09-04 21:57:48,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-09-04 21:57:48,995 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 205 [2020-09-04 21:57:48,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:57:48,996 INFO L225 Difference]: With dead ends: 135 [2020-09-04 21:57:48,996 INFO L226 Difference]: Without dead ends: 130 [2020-09-04 21:57:48,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=227, Invalid=7255, Unknown=0, NotChecked=0, Total=7482 [2020-09-04 21:57:48,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-09-04 21:57:49,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-09-04 21:57:49,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-09-04 21:57:49,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 131 transitions. [2020-09-04 21:57:49,007 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 131 transitions. Word has length 205 [2020-09-04 21:57:49,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:57:49,008 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 131 transitions. [2020-09-04 21:57:49,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-09-04 21:57:49,008 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 131 transitions. [2020-09-04 21:57:49,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-04 21:57:49,010 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:57:49,010 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:57:49,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-09-04 21:57:49,010 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:57:49,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:57:49,011 INFO L82 PathProgramCache]: Analyzing trace with hash -642725794, now seen corresponding path program 28 times [2020-09-04 21:57:49,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:57:49,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273917969] [2020-09-04 21:57:49,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:57:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:49,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:57:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:49,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:57:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:49,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:49,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:49,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:49,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:49,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:49,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:49,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:49,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:49,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:50,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:50,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:50,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:50,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:50,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:50,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:50,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:50,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:51,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:51,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:51,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:51,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:51,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:51,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:52,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:52,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:52,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:52,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:52,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:52,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:53,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 0 proven. 1568 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2020-09-04 21:57:53,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273917969] [2020-09-04 21:57:53,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:57:53,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2020-09-04 21:57:53,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650882675] [2020-09-04 21:57:53,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-09-04 21:57:53,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:57:53,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-09-04 21:57:53,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=3541, Unknown=0, NotChecked=0, Total=3660 [2020-09-04 21:57:53,612 INFO L87 Difference]: Start difference. First operand 130 states and 131 transitions. Second operand 61 states. [2020-09-04 21:57:58,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:57:58,027 INFO L93 Difference]: Finished difference Result 139 states and 140 transitions. [2020-09-04 21:57:58,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-09-04 21:57:58,028 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 212 [2020-09-04 21:57:58,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:57:58,029 INFO L225 Difference]: With dead ends: 139 [2020-09-04 21:57:58,029 INFO L226 Difference]: Without dead ends: 134 [2020-09-04 21:57:58,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=235, Invalid=7775, Unknown=0, NotChecked=0, Total=8010 [2020-09-04 21:57:58,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-09-04 21:57:58,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-09-04 21:57:58,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-04 21:57:58,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 135 transitions. [2020-09-04 21:57:58,040 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 135 transitions. Word has length 212 [2020-09-04 21:57:58,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:57:58,041 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 135 transitions. [2020-09-04 21:57:58,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-09-04 21:57:58,041 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 135 transitions. [2020-09-04 21:57:58,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-04 21:57:58,043 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:57:58,043 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:57:58,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-04 21:57:58,047 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:57:58,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:57:58,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1218916449, now seen corresponding path program 29 times [2020-09-04 21:57:58,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:57:58,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114974741] [2020-09-04 21:57:58,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:57:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:58,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:57:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:58,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:57:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:58,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:58,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:58,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:58,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:58,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:58,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:58,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:59,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:59,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:59,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:59,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:59,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:59,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:59,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:59,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:57:59,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:57:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:00,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:00,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:00,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:00,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:00,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:00,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:00,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:01,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:01,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:01,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:01,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:01,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:02,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:02,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:02,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:03,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 1682 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2020-09-04 21:58:03,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114974741] [2020-09-04 21:58:03,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:58:03,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2020-09-04 21:58:03,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789402234] [2020-09-04 21:58:03,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-09-04 21:58:03,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:58:03,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-09-04 21:58:03,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2020-09-04 21:58:03,111 INFO L87 Difference]: Start difference. First operand 134 states and 135 transitions. Second operand 63 states. [2020-09-04 21:58:07,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:58:07,924 INFO L93 Difference]: Finished difference Result 143 states and 144 transitions. [2020-09-04 21:58:07,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2020-09-04 21:58:07,925 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 219 [2020-09-04 21:58:07,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:58:07,927 INFO L225 Difference]: With dead ends: 143 [2020-09-04 21:58:07,927 INFO L226 Difference]: Without dead ends: 138 [2020-09-04 21:58:07,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=243, Invalid=8313, Unknown=0, NotChecked=0, Total=8556 [2020-09-04 21:58:07,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-04 21:58:07,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-09-04 21:58:07,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-09-04 21:58:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 139 transitions. [2020-09-04 21:58:07,937 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 139 transitions. Word has length 219 [2020-09-04 21:58:07,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:58:07,938 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 139 transitions. [2020-09-04 21:58:07,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-09-04 21:58:07,938 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 139 transitions. [2020-09-04 21:58:07,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-04 21:58:07,940 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:58:07,940 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:58:07,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-04 21:58:07,941 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:58:07,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:58:07,941 INFO L82 PathProgramCache]: Analyzing trace with hash 932597744, now seen corresponding path program 30 times [2020-09-04 21:58:07,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:58:07,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125820656] [2020-09-04 21:58:07,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:58:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:08,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:58:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:08,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:58:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:08,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:08,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:08,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:08,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:08,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:08,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:08,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:09,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:09,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:09,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:09,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:09,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:09,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:09,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:10,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:10,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:10,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:10,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:10,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:10,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:10,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:10,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:11,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:11,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:11,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:11,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:11,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:11,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:12,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:12,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:12,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:12,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 0 proven. 1800 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2020-09-04 21:58:13,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125820656] [2020-09-04 21:58:13,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:58:13,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2020-09-04 21:58:13,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216375585] [2020-09-04 21:58:13,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-09-04 21:58:13,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:58:13,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-09-04 21:58:13,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=4033, Unknown=0, NotChecked=0, Total=4160 [2020-09-04 21:58:13,359 INFO L87 Difference]: Start difference. First operand 138 states and 139 transitions. Second operand 65 states. [2020-09-04 21:58:18,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:58:18,610 INFO L93 Difference]: Finished difference Result 147 states and 148 transitions. [2020-09-04 21:58:18,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-09-04 21:58:18,611 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 226 [2020-09-04 21:58:18,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:58:18,613 INFO L225 Difference]: With dead ends: 147 [2020-09-04 21:58:18,613 INFO L226 Difference]: Without dead ends: 142 [2020-09-04 21:58:18,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=251, Invalid=8869, Unknown=0, NotChecked=0, Total=9120 [2020-09-04 21:58:18,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-09-04 21:58:18,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-09-04 21:58:18,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-09-04 21:58:18,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 143 transitions. [2020-09-04 21:58:18,622 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 143 transitions. Word has length 226 [2020-09-04 21:58:18,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:58:18,623 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 143 transitions. [2020-09-04 21:58:18,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-09-04 21:58:18,623 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 143 transitions. [2020-09-04 21:58:18,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-09-04 21:58:18,625 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:58:18,625 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:58:18,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-04 21:58:18,625 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:58:18,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:58:18,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1369285583, now seen corresponding path program 31 times [2020-09-04 21:58:18,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:58:18,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846203830] [2020-09-04 21:58:18,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:58:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:18,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:58:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:18,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:58:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:18,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:19,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:19,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:19,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:19,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:19,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:19,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:19,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:19,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:20,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:20,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:20,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:20,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:20,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:20,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:20,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:21,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:21,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:21,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:21,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:21,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:21,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:22,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:22,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:22,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:22,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:22,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:23,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:23,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:23,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:23,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:24,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2020-09-04 21:58:24,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846203830] [2020-09-04 21:58:24,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:58:24,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2020-09-04 21:58:24,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692907891] [2020-09-04 21:58:24,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-09-04 21:58:24,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:58:24,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-09-04 21:58:24,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=4291, Unknown=0, NotChecked=0, Total=4422 [2020-09-04 21:58:24,465 INFO L87 Difference]: Start difference. First operand 142 states and 143 transitions. Second operand 67 states. [2020-09-04 21:58:30,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:58:30,160 INFO L93 Difference]: Finished difference Result 151 states and 152 transitions. [2020-09-04 21:58:30,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2020-09-04 21:58:30,161 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 233 [2020-09-04 21:58:30,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:58:30,163 INFO L225 Difference]: With dead ends: 151 [2020-09-04 21:58:30,163 INFO L226 Difference]: Without dead ends: 146 [2020-09-04 21:58:30,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=259, Invalid=9443, Unknown=0, NotChecked=0, Total=9702 [2020-09-04 21:58:30,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-04 21:58:30,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-09-04 21:58:30,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-04 21:58:30,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 147 transitions. [2020-09-04 21:58:30,176 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 147 transitions. Word has length 233 [2020-09-04 21:58:30,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:58:30,177 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 147 transitions. [2020-09-04 21:58:30,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-09-04 21:58:30,177 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 147 transitions. [2020-09-04 21:58:30,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-04 21:58:30,179 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:58:30,179 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:58:30,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-09-04 21:58:30,179 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:58:30,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:58:30,180 INFO L82 PathProgramCache]: Analyzing trace with hash -598776446, now seen corresponding path program 32 times [2020-09-04 21:58:30,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:58:30,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569485653] [2020-09-04 21:58:30,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:58:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:30,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:58:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:30,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:58:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:30,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:30,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:30,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:30,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:30,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:31,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:31,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:31,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:31,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:31,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:31,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:31,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:32,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:32,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:32,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:32,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:32,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:32,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:33,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:33,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:33,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:33,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:33,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:34,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:34,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:34,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:34,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:34,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:34,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:35,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:35,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:35,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:35,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:36,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 2048 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2020-09-04 21:58:36,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569485653] [2020-09-04 21:58:36,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:58:36,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2020-09-04 21:58:36,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749415734] [2020-09-04 21:58:36,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-09-04 21:58:36,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:58:36,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-09-04 21:58:36,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=4557, Unknown=0, NotChecked=0, Total=4692 [2020-09-04 21:58:36,542 INFO L87 Difference]: Start difference. First operand 146 states and 147 transitions. Second operand 69 states. [2020-09-04 21:58:42,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:58:42,725 INFO L93 Difference]: Finished difference Result 155 states and 156 transitions. [2020-09-04 21:58:42,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2020-09-04 21:58:42,726 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 240 [2020-09-04 21:58:42,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:58:42,729 INFO L225 Difference]: With dead ends: 155 [2020-09-04 21:58:42,729 INFO L226 Difference]: Without dead ends: 150 [2020-09-04 21:58:42,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=267, Invalid=10035, Unknown=0, NotChecked=0, Total=10302 [2020-09-04 21:58:42,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-09-04 21:58:42,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-09-04 21:58:42,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-09-04 21:58:42,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 151 transitions. [2020-09-04 21:58:42,752 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 151 transitions. Word has length 240 [2020-09-04 21:58:42,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:58:42,752 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 151 transitions. [2020-09-04 21:58:42,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-09-04 21:58:42,753 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 151 transitions. [2020-09-04 21:58:42,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-09-04 21:58:42,756 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:58:42,757 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:58:42,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-09-04 21:58:42,757 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:58:42,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:58:42,758 INFO L82 PathProgramCache]: Analyzing trace with hash 2075915971, now seen corresponding path program 33 times [2020-09-04 21:58:42,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:58:42,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826859815] [2020-09-04 21:58:42,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:58:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:42,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:58:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:42,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:58:42,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:43,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:43,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:43,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:43,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:43,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:43,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:43,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:43,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:43,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:44,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:44,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:44,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:44,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:44,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:44,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:45,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:45,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:45,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:45,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:45,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:45,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:46,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:46,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:46,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:46,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:46,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:47,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:47,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:47,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:47,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:47,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:48,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:48,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:48,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:48,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:48,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:49,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:49,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 2178 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2020-09-04 21:58:49,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826859815] [2020-09-04 21:58:49,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:58:49,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2020-09-04 21:58:49,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214434757] [2020-09-04 21:58:49,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-09-04 21:58:49,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:58:49,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-09-04 21:58:49,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=4831, Unknown=0, NotChecked=0, Total=4970 [2020-09-04 21:58:49,908 INFO L87 Difference]: Start difference. First operand 150 states and 151 transitions. Second operand 71 states. [2020-09-04 21:58:56,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:58:56,310 INFO L93 Difference]: Finished difference Result 159 states and 160 transitions. [2020-09-04 21:58:56,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2020-09-04 21:58:56,311 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 247 [2020-09-04 21:58:56,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:58:56,313 INFO L225 Difference]: With dead ends: 159 [2020-09-04 21:58:56,314 INFO L226 Difference]: Without dead ends: 154 [2020-09-04 21:58:56,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=275, Invalid=10645, Unknown=0, NotChecked=0, Total=10920 [2020-09-04 21:58:56,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-04 21:58:56,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-09-04 21:58:56,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-04 21:58:56,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 155 transitions. [2020-09-04 21:58:56,323 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 155 transitions. Word has length 247 [2020-09-04 21:58:56,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:58:56,323 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 155 transitions. [2020-09-04 21:58:56,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-09-04 21:58:56,324 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 155 transitions. [2020-09-04 21:58:56,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-09-04 21:58:56,325 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:58:56,326 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:58:56,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-09-04 21:58:56,326 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:58:56,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:58:56,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1673398548, now seen corresponding path program 34 times [2020-09-04 21:58:56,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:58:56,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130126188] [2020-09-04 21:58:56,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:58:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:56,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:58:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:56,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:58:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:56,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:56,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:56,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:56,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:57,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:57,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:57,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:57,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:57,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:57,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:58,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:58,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:58,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:58,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:58,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:58,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:59,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:59,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:59,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:59,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:59,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:59,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:58:59,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:58:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:00,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:00,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:00,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:00,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:01,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:01,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:01,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:01,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:01,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:02,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:02,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:02,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:02,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:03,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2020-09-04 21:59:03,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130126188] [2020-09-04 21:59:03,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:59:03,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2020-09-04 21:59:03,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988823623] [2020-09-04 21:59:03,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-09-04 21:59:03,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:59:03,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-09-04 21:59:03,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=5113, Unknown=0, NotChecked=0, Total=5256 [2020-09-04 21:59:03,527 INFO L87 Difference]: Start difference. First operand 154 states and 155 transitions. Second operand 73 states. [2020-09-04 21:59:10,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:59:10,662 INFO L93 Difference]: Finished difference Result 163 states and 164 transitions. [2020-09-04 21:59:10,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2020-09-04 21:59:10,663 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 254 [2020-09-04 21:59:10,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:59:10,665 INFO L225 Difference]: With dead ends: 163 [2020-09-04 21:59:10,665 INFO L226 Difference]: Without dead ends: 158 [2020-09-04 21:59:10,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=283, Invalid=11273, Unknown=0, NotChecked=0, Total=11556 [2020-09-04 21:59:10,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-04 21:59:10,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-09-04 21:59:10,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-04 21:59:10,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 159 transitions. [2020-09-04 21:59:10,677 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 159 transitions. Word has length 254 [2020-09-04 21:59:10,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:59:10,677 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 159 transitions. [2020-09-04 21:59:10,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-09-04 21:59:10,678 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 159 transitions. [2020-09-04 21:59:10,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-09-04 21:59:10,679 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:59:10,680 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:59:10,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-09-04 21:59:10,680 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:59:10,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:59:10,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1244110677, now seen corresponding path program 35 times [2020-09-04 21:59:10,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:59:10,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101736809] [2020-09-04 21:59:10,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:59:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:10,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:59:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:10,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:59:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:11,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:11,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:11,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:11,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:11,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:12,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:12,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:12,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:12,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:12,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:12,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:12,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:13,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:13,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:13,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:13,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:13,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:14,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:14,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:14,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:14,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:14,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:14,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:15,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:15,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:15,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:15,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:16,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:16,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:16,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:16,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:16,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:17,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:17,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:17,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:18,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 1855 trivial. 0 not checked. [2020-09-04 21:59:18,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101736809] [2020-09-04 21:59:18,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:59:18,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2020-09-04 21:59:18,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724910133] [2020-09-04 21:59:18,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-09-04 21:59:18,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:59:18,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-09-04 21:59:18,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=5403, Unknown=0, NotChecked=0, Total=5550 [2020-09-04 21:59:18,571 INFO L87 Difference]: Start difference. First operand 158 states and 159 transitions. Second operand 75 states. [2020-09-04 21:59:25,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:59:25,916 INFO L93 Difference]: Finished difference Result 167 states and 168 transitions. [2020-09-04 21:59:25,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2020-09-04 21:59:25,918 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 261 [2020-09-04 21:59:25,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:59:25,920 INFO L225 Difference]: With dead ends: 167 [2020-09-04 21:59:25,920 INFO L226 Difference]: Without dead ends: 162 [2020-09-04 21:59:25,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=291, Invalid=11919, Unknown=0, NotChecked=0, Total=12210 [2020-09-04 21:59:25,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-04 21:59:25,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-09-04 21:59:25,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-04 21:59:25,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 163 transitions. [2020-09-04 21:59:25,931 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 163 transitions. Word has length 261 [2020-09-04 21:59:25,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:59:25,932 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 163 transitions. [2020-09-04 21:59:25,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-09-04 21:59:25,932 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 163 transitions. [2020-09-04 21:59:25,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-09-04 21:59:25,934 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:59:25,934 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:59:25,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-09-04 21:59:25,934 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:59:25,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:59:25,935 INFO L82 PathProgramCache]: Analyzing trace with hash -607896922, now seen corresponding path program 36 times [2020-09-04 21:59:25,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:59:25,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660145900] [2020-09-04 21:59:25,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:59:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:26,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:59:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:26,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:59:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:26,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:26,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:26,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:26,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:26,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:26,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:27,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:27,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:27,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:27,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:27,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:27,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:28,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:28,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:28,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:28,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:28,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:28,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:29,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:29,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:29,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:29,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:29,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:30,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:30,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:30,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:30,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:31,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:31,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:31,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:31,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:31,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:31,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:32,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:32,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:32,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:33,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:33,951 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 0 proven. 2592 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2020-09-04 21:59:33,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660145900] [2020-09-04 21:59:33,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:59:33,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2020-09-04 21:59:33,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547308934] [2020-09-04 21:59:33,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-09-04 21:59:33,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:59:33,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-09-04 21:59:33,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=5701, Unknown=0, NotChecked=0, Total=5852 [2020-09-04 21:59:33,954 INFO L87 Difference]: Start difference. First operand 162 states and 163 transitions. Second operand 77 states. [2020-09-04 21:59:41,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:59:41,835 INFO L93 Difference]: Finished difference Result 171 states and 172 transitions. [2020-09-04 21:59:41,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2020-09-04 21:59:41,836 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 268 [2020-09-04 21:59:41,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:59:41,839 INFO L225 Difference]: With dead ends: 171 [2020-09-04 21:59:41,839 INFO L226 Difference]: Without dead ends: 166 [2020-09-04 21:59:41,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=299, Invalid=12583, Unknown=0, NotChecked=0, Total=12882 [2020-09-04 21:59:41,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-04 21:59:41,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-09-04 21:59:41,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-09-04 21:59:41,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 167 transitions. [2020-09-04 21:59:41,847 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 167 transitions. Word has length 268 [2020-09-04 21:59:41,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:59:41,848 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 167 transitions. [2020-09-04 21:59:41,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-09-04 21:59:41,848 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 167 transitions. [2020-09-04 21:59:41,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-04 21:59:41,850 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:59:41,850 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:59:41,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-09-04 21:59:41,851 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:59:41,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:59:41,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1852265959, now seen corresponding path program 37 times [2020-09-04 21:59:41,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:59:41,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669022822] [2020-09-04 21:59:41,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:59:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:41,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:59:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:41,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:59:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:42,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:42,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:42,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:42,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:42,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:42,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:42,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:43,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:43,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:43,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:43,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:43,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:44,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:44,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:44,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:44,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:44,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:44,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:45,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:45,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:45,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:45,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:45,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:46,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:46,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:46,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:46,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:46,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:46,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:47,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:47,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:47,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:47,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:48,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:48,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:48,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:48,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:49,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:49,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:50,457 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 2738 refuted. 0 times theorem prover too weak. 2072 trivial. 0 not checked. [2020-09-04 21:59:50,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669022822] [2020-09-04 21:59:50,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:59:50,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2020-09-04 21:59:50,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196988761] [2020-09-04 21:59:50,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-09-04 21:59:50,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:59:50,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-09-04 21:59:50,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=6007, Unknown=0, NotChecked=0, Total=6162 [2020-09-04 21:59:50,461 INFO L87 Difference]: Start difference. First operand 166 states and 167 transitions. Second operand 79 states. [2020-09-04 21:59:58,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:59:58,786 INFO L93 Difference]: Finished difference Result 175 states and 176 transitions. [2020-09-04 21:59:58,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2020-09-04 21:59:58,787 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 275 [2020-09-04 21:59:58,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:59:58,790 INFO L225 Difference]: With dead ends: 175 [2020-09-04 21:59:58,790 INFO L226 Difference]: Without dead ends: 170 [2020-09-04 21:59:58,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=307, Invalid=13265, Unknown=0, NotChecked=0, Total=13572 [2020-09-04 21:59:58,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-09-04 21:59:58,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-09-04 21:59:58,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-09-04 21:59:58,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 171 transitions. [2020-09-04 21:59:58,800 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 171 transitions. Word has length 275 [2020-09-04 21:59:58,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:59:58,801 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 171 transitions. [2020-09-04 21:59:58,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-09-04 21:59:58,801 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 171 transitions. [2020-09-04 21:59:58,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-09-04 21:59:58,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:59:58,803 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:59:58,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-09-04 21:59:58,804 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:59:58,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:59:58,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1002177992, now seen corresponding path program 38 times [2020-09-04 21:59:58,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:59:58,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746127567] [2020-09-04 21:59:58,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:59:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:58,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:59:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:58,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 21:59:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:59,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:59,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:59,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:59,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:59:59,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:59:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:00,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:00,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:00,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:00,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:00,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:00,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:00,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:01,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:01,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:01,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:01,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:01,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:02,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:02,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:02,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:02,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:02,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:03,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:03,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:03,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:03,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:04,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:04,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:04,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:04,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:05,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:05,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:05,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:05,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:06,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:06,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:06,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:06,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:06,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:07,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:08,346 INFO L134 CoverageAnalysis]: Checked inductivity of 5073 backedges. 0 proven. 2888 refuted. 0 times theorem prover too weak. 2185 trivial. 0 not checked. [2020-09-04 22:00:08,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746127567] [2020-09-04 22:00:08,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:00:08,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2020-09-04 22:00:08,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024210196] [2020-09-04 22:00:08,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-09-04 22:00:08,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:00:08,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-09-04 22:00:08,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=6321, Unknown=0, NotChecked=0, Total=6480 [2020-09-04 22:00:08,350 INFO L87 Difference]: Start difference. First operand 170 states and 171 transitions. Second operand 81 states. [2020-09-04 22:00:17,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:00:17,415 INFO L93 Difference]: Finished difference Result 179 states and 180 transitions. [2020-09-04 22:00:17,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2020-09-04 22:00:17,416 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 282 [2020-09-04 22:00:17,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:00:17,418 INFO L225 Difference]: With dead ends: 179 [2020-09-04 22:00:17,418 INFO L226 Difference]: Without dead ends: 174 [2020-09-04 22:00:17,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=315, Invalid=13965, Unknown=0, NotChecked=0, Total=14280 [2020-09-04 22:00:17,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-09-04 22:00:17,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-09-04 22:00:17,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-04 22:00:17,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 175 transitions. [2020-09-04 22:00:17,432 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 175 transitions. Word has length 282 [2020-09-04 22:00:17,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:00:17,433 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 175 transitions. [2020-09-04 22:00:17,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-09-04 22:00:17,433 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 175 transitions. [2020-09-04 22:00:17,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-09-04 22:00:17,435 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:00:17,435 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:00:17,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-09-04 22:00:17,436 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:00:17,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:00:17,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1732057721, now seen corresponding path program 39 times [2020-09-04 22:00:17,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:00:17,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901581022] [2020-09-04 22:00:17,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:00:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:17,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:00:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:17,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:00:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:17,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:17,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:18,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:18,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:18,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:18,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:18,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:18,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:19,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:19,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:19,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:19,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:20,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:20,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:20,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:20,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:20,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:21,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:21,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:21,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:21,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:21,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:22,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:22,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:22,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:22,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:23,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:23,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:23,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:23,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:24,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:24,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:24,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:24,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:25,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:25,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:25,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:26,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:26,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:27,625 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 3042 refuted. 0 times theorem prover too weak. 2301 trivial. 0 not checked. [2020-09-04 22:00:27,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901581022] [2020-09-04 22:00:27,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:00:27,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2020-09-04 22:00:27,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994863284] [2020-09-04 22:00:27,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-09-04 22:00:27,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:00:27,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-09-04 22:00:27,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=6643, Unknown=0, NotChecked=0, Total=6806 [2020-09-04 22:00:27,627 INFO L87 Difference]: Start difference. First operand 174 states and 175 transitions. Second operand 83 states. [2020-09-04 22:00:37,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:00:37,654 INFO L93 Difference]: Finished difference Result 183 states and 184 transitions. [2020-09-04 22:00:37,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2020-09-04 22:00:37,655 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 289 [2020-09-04 22:00:37,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:00:37,657 INFO L225 Difference]: With dead ends: 183 [2020-09-04 22:00:37,657 INFO L226 Difference]: Without dead ends: 178 [2020-09-04 22:00:37,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=323, Invalid=14683, Unknown=0, NotChecked=0, Total=15006 [2020-09-04 22:00:37,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-04 22:00:37,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-09-04 22:00:37,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-04 22:00:37,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 179 transitions. [2020-09-04 22:00:37,668 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 179 transitions. Word has length 289 [2020-09-04 22:00:37,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:00:37,668 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 179 transitions. [2020-09-04 22:00:37,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 83 states. [2020-09-04 22:00:37,669 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 179 transitions. [2020-09-04 22:00:37,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-09-04 22:00:37,671 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:00:37,671 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:00:37,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-09-04 22:00:37,672 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:00:37,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:00:37,672 INFO L82 PathProgramCache]: Analyzing trace with hash 253708234, now seen corresponding path program 40 times [2020-09-04 22:00:37,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:00:37,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713938640] [2020-09-04 22:00:37,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:00:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:37,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:00:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:37,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:00:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:37,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:38,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:38,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:38,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:38,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:38,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:38,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:39,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:39,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:39,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:39,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:39,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:40,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:40,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:40,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:40,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:40,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:41,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:41,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:41,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:41,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:42,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:42,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:42,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:42,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:42,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:42,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:43,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:43,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:43,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:44,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:44,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:44,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:44,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:45,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:45,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:45,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:45,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:46,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:46,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:46,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:48,260 INFO L134 CoverageAnalysis]: Checked inductivity of 5620 backedges. 0 proven. 3200 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2020-09-04 22:00:48,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713938640] [2020-09-04 22:00:48,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:00:48,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2020-09-04 22:00:48,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121338592] [2020-09-04 22:00:48,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-09-04 22:00:48,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:00:48,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-09-04 22:00:48,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=6973, Unknown=0, NotChecked=0, Total=7140 [2020-09-04 22:00:48,262 INFO L87 Difference]: Start difference. First operand 178 states and 179 transitions. Second operand 85 states. [2020-09-04 22:00:58,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:00:58,534 INFO L93 Difference]: Finished difference Result 187 states and 188 transitions. [2020-09-04 22:00:58,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2020-09-04 22:00:58,536 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 296 [2020-09-04 22:00:58,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:00:58,537 INFO L225 Difference]: With dead ends: 187 [2020-09-04 22:00:58,537 INFO L226 Difference]: Without dead ends: 182 [2020-09-04 22:00:58,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=331, Invalid=15419, Unknown=0, NotChecked=0, Total=15750 [2020-09-04 22:00:58,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-09-04 22:00:58,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-09-04 22:00:58,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-09-04 22:00:58,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 183 transitions. [2020-09-04 22:00:58,551 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 183 transitions. Word has length 296 [2020-09-04 22:00:58,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:00:58,552 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 183 transitions. [2020-09-04 22:00:58,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 85 states. [2020-09-04 22:00:58,552 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 183 transitions. [2020-09-04 22:00:58,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-09-04 22:00:58,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:00:58,555 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:00:58,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-09-04 22:00:58,555 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:00:58,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:00:58,556 INFO L82 PathProgramCache]: Analyzing trace with hash -580195061, now seen corresponding path program 41 times [2020-09-04 22:00:58,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:00:58,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600304250] [2020-09-04 22:00:58,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:00:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:58,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:00:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:58,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:00:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:58,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:59,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:59,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:59,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:59,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:59,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:00,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:00,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:00,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:00,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:00,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:01,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:01,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:01,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:01,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:01,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:02,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:02,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:02,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:02,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:02,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:02,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:03,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:03,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:03,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:03,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:04,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:04,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:04,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:04,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:05,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:05,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:05,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:06,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:06,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:06,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:06,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:07,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:07,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:07,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:08,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:08,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:09,956 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 0 proven. 3362 refuted. 0 times theorem prover too weak. 2542 trivial. 0 not checked. [2020-09-04 22:01:09,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600304250] [2020-09-04 22:01:09,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:01:09,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2020-09-04 22:01:09,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502753874] [2020-09-04 22:01:09,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-09-04 22:01:09,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:01:09,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-09-04 22:01:09,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=7311, Unknown=0, NotChecked=0, Total=7482 [2020-09-04 22:01:09,959 INFO L87 Difference]: Start difference. First operand 182 states and 183 transitions. Second operand 87 states. [2020-09-04 22:01:20,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:01:20,973 INFO L93 Difference]: Finished difference Result 191 states and 192 transitions. [2020-09-04 22:01:20,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2020-09-04 22:01:20,975 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 303 [2020-09-04 22:01:20,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:01:20,977 INFO L225 Difference]: With dead ends: 191 [2020-09-04 22:01:20,977 INFO L226 Difference]: Without dead ends: 186 [2020-09-04 22:01:20,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=339, Invalid=16173, Unknown=0, NotChecked=0, Total=16512 [2020-09-04 22:01:20,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-09-04 22:01:20,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-09-04 22:01:20,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-09-04 22:01:20,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 187 transitions. [2020-09-04 22:01:20,987 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 187 transitions. Word has length 303 [2020-09-04 22:01:20,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:01:20,988 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 187 transitions. [2020-09-04 22:01:20,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-09-04 22:01:20,988 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 187 transitions. [2020-09-04 22:01:20,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-09-04 22:01:20,990 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:01:20,991 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:01:20,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-09-04 22:01:20,991 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:01:20,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:01:20,992 INFO L82 PathProgramCache]: Analyzing trace with hash 540549980, now seen corresponding path program 42 times [2020-09-04 22:01:20,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:01:20,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636262767] [2020-09-04 22:01:20,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:01:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:21,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:21,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:01:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:21,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:21,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:22,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:22,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:22,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:22,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:22,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:23,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:23,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:23,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:23,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:23,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:23,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:24,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:24,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:24,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:24,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:25,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:25,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:25,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:25,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:25,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:25,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:26,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:26,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:26,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:26,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:27,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:27,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:27,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:27,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:28,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:28,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:28,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:29,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:29,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:29,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:29,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:30,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:30,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:30,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:31,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:31,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:32,982 INFO L134 CoverageAnalysis]: Checked inductivity of 6195 backedges. 0 proven. 3528 refuted. 0 times theorem prover too weak. 2667 trivial. 0 not checked. [2020-09-04 22:01:32,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636262767] [2020-09-04 22:01:32,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:01:32,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2020-09-04 22:01:32,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030207448] [2020-09-04 22:01:32,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2020-09-04 22:01:32,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:01:32,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2020-09-04 22:01:32,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=7657, Unknown=0, NotChecked=0, Total=7832 [2020-09-04 22:01:32,984 INFO L87 Difference]: Start difference. First operand 186 states and 187 transitions. Second operand 89 states. [2020-09-04 22:01:44,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:01:44,671 INFO L93 Difference]: Finished difference Result 195 states and 196 transitions. [2020-09-04 22:01:44,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2020-09-04 22:01:44,673 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 310 [2020-09-04 22:01:44,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:01:44,677 INFO L225 Difference]: With dead ends: 195 [2020-09-04 22:01:44,677 INFO L226 Difference]: Without dead ends: 190 [2020-09-04 22:01:44,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=347, Invalid=16945, Unknown=0, NotChecked=0, Total=17292 [2020-09-04 22:01:44,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-09-04 22:01:44,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-09-04 22:01:44,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-09-04 22:01:44,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 191 transitions. [2020-09-04 22:01:44,697 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 191 transitions. Word has length 310 [2020-09-04 22:01:44,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:01:44,700 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 191 transitions. [2020-09-04 22:01:44,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 89 states. [2020-09-04 22:01:44,700 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 191 transitions. [2020-09-04 22:01:44,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-09-04 22:01:44,702 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:01:44,703 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:01:44,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-09-04 22:01:44,703 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:01:44,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:01:44,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1548563043, now seen corresponding path program 43 times [2020-09-04 22:01:44,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:01:44,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887257272] [2020-09-04 22:01:44,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:01:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:44,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:44,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:01:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:45,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:45,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:45,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:45,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:45,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:45,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:46,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:46,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:46,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:46,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:46,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:47,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:47,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:47,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:47,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:47,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:48,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:48,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:48,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:48,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:49,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:49,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:49,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:49,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:50,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:50,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:50,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:50,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:51,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:51,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:51,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:52,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:52,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:52,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:53,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:53,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:53,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:54,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:54,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:54,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:55,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:55,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:55,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:57,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 0 proven. 3698 refuted. 0 times theorem prover too weak. 2795 trivial. 0 not checked. [2020-09-04 22:01:57,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887257272] [2020-09-04 22:01:57,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:01:57,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2020-09-04 22:01:57,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416338227] [2020-09-04 22:01:57,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2020-09-04 22:01:57,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:01:57,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2020-09-04 22:01:57,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=8011, Unknown=0, NotChecked=0, Total=8190 [2020-09-04 22:01:57,264 INFO L87 Difference]: Start difference. First operand 190 states and 191 transitions. Second operand 91 states. [2020-09-04 22:02:09,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:02:09,848 INFO L93 Difference]: Finished difference Result 199 states and 200 transitions. [2020-09-04 22:02:09,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2020-09-04 22:02:09,850 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 317 [2020-09-04 22:02:09,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:02:09,851 INFO L225 Difference]: With dead ends: 199 [2020-09-04 22:02:09,851 INFO L226 Difference]: Without dead ends: 194 [2020-09-04 22:02:09,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=355, Invalid=17735, Unknown=0, NotChecked=0, Total=18090 [2020-09-04 22:02:09,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-04 22:02:09,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-09-04 22:02:09,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-04 22:02:09,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 195 transitions. [2020-09-04 22:02:09,863 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 195 transitions. Word has length 317 [2020-09-04 22:02:09,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:02:09,863 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 195 transitions. [2020-09-04 22:02:09,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 91 states. [2020-09-04 22:02:09,864 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 195 transitions. [2020-09-04 22:02:09,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-09-04 22:02:09,866 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:02:09,866 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:02:09,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-09-04 22:02:09,867 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:02:09,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:02:09,867 INFO L82 PathProgramCache]: Analyzing trace with hash -848261906, now seen corresponding path program 44 times [2020-09-04 22:02:09,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:02:09,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015220600] [2020-09-04 22:02:09,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:02:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:10,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:02:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:10,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:02:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:10,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:10,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:10,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:10,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:11,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:11,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:11,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:11,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:11,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:11,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:12,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:12,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:12,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:12,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:13,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:13,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:13,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:13,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:13,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:14,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:14,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:14,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:14,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:15,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:15,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:15,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:16,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:16,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:16,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:16,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:16,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:17,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:17,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:17,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:17,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:18,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:18,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:18,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:19,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:19,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:19,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:20,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:20,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:20,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:21,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:21,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:23,089 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 0 proven. 3872 refuted. 0 times theorem prover too weak. 2926 trivial. 0 not checked. [2020-09-04 22:02:23,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015220600] [2020-09-04 22:02:23,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:02:23,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2020-09-04 22:02:23,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247232063] [2020-09-04 22:02:23,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2020-09-04 22:02:23,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:02:23,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2020-09-04 22:02:23,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=8373, Unknown=0, NotChecked=0, Total=8556 [2020-09-04 22:02:23,092 INFO L87 Difference]: Start difference. First operand 194 states and 195 transitions. Second operand 93 states. [2020-09-04 22:02:35,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:02:35,924 INFO L93 Difference]: Finished difference Result 203 states and 204 transitions. [2020-09-04 22:02:35,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2020-09-04 22:02:35,926 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 324 [2020-09-04 22:02:35,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:02:35,928 INFO L225 Difference]: With dead ends: 203 [2020-09-04 22:02:35,928 INFO L226 Difference]: Without dead ends: 198 [2020-09-04 22:02:35,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=363, Invalid=18543, Unknown=0, NotChecked=0, Total=18906 [2020-09-04 22:02:35,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-09-04 22:02:35,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-09-04 22:02:35,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-09-04 22:02:35,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 199 transitions. [2020-09-04 22:02:35,939 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 199 transitions. Word has length 324 [2020-09-04 22:02:35,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:02:35,940 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 199 transitions. [2020-09-04 22:02:35,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 93 states. [2020-09-04 22:02:35,940 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 199 transitions. [2020-09-04 22:02:35,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-09-04 22:02:35,942 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:02:35,943 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:02:35,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-09-04 22:02:35,943 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:02:35,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:02:35,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1227441105, now seen corresponding path program 45 times [2020-09-04 22:02:35,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:02:35,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510205446] [2020-09-04 22:02:35,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:02:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:36,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:02:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:36,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:02:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:36,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:36,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:36,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:36,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:37,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:37,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:37,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:37,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:37,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:38,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:38,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:38,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:38,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:38,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:39,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:39,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:39,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:39,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:40,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:40,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:40,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:40,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:40,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:41,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:41,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:41,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:42,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:42,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:42,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:42,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:43,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:43,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:43,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:44,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:44,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:44,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:45,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:45,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:45,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:46,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:46,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:46,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:46,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:47,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:47,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:47,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:49,511 INFO L134 CoverageAnalysis]: Checked inductivity of 7110 backedges. 0 proven. 4050 refuted. 0 times theorem prover too weak. 3060 trivial. 0 not checked. [2020-09-04 22:02:49,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510205446] [2020-09-04 22:02:49,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:02:49,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2020-09-04 22:02:49,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496423673] [2020-09-04 22:02:49,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2020-09-04 22:02:49,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:02:49,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2020-09-04 22:02:49,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=8743, Unknown=0, NotChecked=0, Total=8930 [2020-09-04 22:02:49,513 INFO L87 Difference]: Start difference. First operand 198 states and 199 transitions. Second operand 95 states. [2020-09-04 22:03:03,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:03:03,107 INFO L93 Difference]: Finished difference Result 207 states and 208 transitions. [2020-09-04 22:03:03,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2020-09-04 22:03:03,109 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 331 [2020-09-04 22:03:03,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:03:03,111 INFO L225 Difference]: With dead ends: 207 [2020-09-04 22:03:03,111 INFO L226 Difference]: Without dead ends: 202 [2020-09-04 22:03:03,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=371, Invalid=19369, Unknown=0, NotChecked=0, Total=19740 [2020-09-04 22:03:03,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-04 22:03:03,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-04 22:03:03,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-04 22:03:03,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 203 transitions. [2020-09-04 22:03:03,123 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 203 transitions. Word has length 331 [2020-09-04 22:03:03,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:03:03,124 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 203 transitions. [2020-09-04 22:03:03,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 95 states. [2020-09-04 22:03:03,124 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 203 transitions. [2020-09-04 22:03:03,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-09-04 22:03:03,126 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:03:03,127 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:03:03,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-09-04 22:03:03,127 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:03:03,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:03:03,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1588233344, now seen corresponding path program 46 times [2020-09-04 22:03:03,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:03:03,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810552154] [2020-09-04 22:03:03,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:03:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:03,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:03:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:03,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:03:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:03,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:03,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:03,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:04,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:04,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:04,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:04,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:04,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:05,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:05,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:05,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:05,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:05,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:06,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:06,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:06,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:06,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:06,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:07,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:07,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:07,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:07,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:08,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:08,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:08,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:08,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:09,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:09,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:09,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:10,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:10,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:10,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:10,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:10,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:11,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:11,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:11,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:12,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:12,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:12,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:13,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:13,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:14,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:14,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:14,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:15,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:15,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:16,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:17,780 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 4232 refuted. 0 times theorem prover too weak. 3197 trivial. 0 not checked. [2020-09-04 22:03:17,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810552154] [2020-09-04 22:03:17,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:03:17,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2020-09-04 22:03:17,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041605418] [2020-09-04 22:03:17,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2020-09-04 22:03:17,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:03:17,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2020-09-04 22:03:17,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=9121, Unknown=0, NotChecked=0, Total=9312 [2020-09-04 22:03:17,783 INFO L87 Difference]: Start difference. First operand 202 states and 203 transitions. Second operand 97 states. [2020-09-04 22:03:32,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:03:32,854 INFO L93 Difference]: Finished difference Result 211 states and 212 transitions. [2020-09-04 22:03:32,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2020-09-04 22:03:32,856 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 338 [2020-09-04 22:03:32,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:03:32,858 INFO L225 Difference]: With dead ends: 211 [2020-09-04 22:03:32,858 INFO L226 Difference]: Without dead ends: 206 [2020-09-04 22:03:32,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=379, Invalid=20213, Unknown=0, NotChecked=0, Total=20592 [2020-09-04 22:03:32,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-04 22:03:32,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-09-04 22:03:32,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-09-04 22:03:32,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 207 transitions. [2020-09-04 22:03:32,871 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 207 transitions. Word has length 338 [2020-09-04 22:03:32,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:03:32,872 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 207 transitions. [2020-09-04 22:03:32,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 97 states. [2020-09-04 22:03:32,872 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 207 transitions. [2020-09-04 22:03:32,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-09-04 22:03:32,875 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:03:32,875 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:03:32,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-09-04 22:03:32,875 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:03:32,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:03:32,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1033418945, now seen corresponding path program 47 times [2020-09-04 22:03:32,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:03:32,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941261228] [2020-09-04 22:03:32,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:03:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:33,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:03:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:33,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:03:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:33,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:33,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:33,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:33,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:34,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:34,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:34,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:34,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:34,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:35,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:35,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:35,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:35,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:36,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:36,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:36,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:36,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:36,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:37,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:37,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:37,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:38,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:38,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:38,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:38,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:38,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:39,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:39,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:39,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:40,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:40,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:40,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:40,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:41,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:41,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:41,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:42,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:42,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:42,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:43,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:43,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:43,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:44,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:44,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:45,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:45,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:45,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:46,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:46,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:47,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:03:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:03:49,126 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 4418 refuted. 0 times theorem prover too weak. 3337 trivial. 0 not checked. [2020-09-04 22:03:49,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941261228] [2020-09-04 22:03:49,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:03:49,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2020-09-04 22:03:49,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362514133] [2020-09-04 22:03:49,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2020-09-04 22:03:49,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:03:49,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2020-09-04 22:03:49,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=9507, Unknown=0, NotChecked=0, Total=9702 [2020-09-04 22:03:49,128 INFO L87 Difference]: Start difference. First operand 206 states and 207 transitions. Second operand 99 states. [2020-09-04 22:04:06,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:04:06,845 INFO L93 Difference]: Finished difference Result 215 states and 216 transitions. [2020-09-04 22:04:06,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2020-09-04 22:04:06,847 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 345 [2020-09-04 22:04:06,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:04:06,849 INFO L225 Difference]: With dead ends: 215 [2020-09-04 22:04:06,849 INFO L226 Difference]: Without dead ends: 210 [2020-09-04 22:04:06,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=387, Invalid=21075, Unknown=0, NotChecked=0, Total=21462 [2020-09-04 22:04:06,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-09-04 22:04:06,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2020-09-04 22:04:06,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-09-04 22:04:06,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 211 transitions. [2020-09-04 22:04:06,863 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 211 transitions. Word has length 345 [2020-09-04 22:04:06,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:04:06,864 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 211 transitions. [2020-09-04 22:04:06,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 99 states. [2020-09-04 22:04:06,864 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 211 transitions. [2020-09-04 22:04:06,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-09-04 22:04:06,866 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:04:06,867 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:04:06,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-09-04 22:04:06,867 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:04:06,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:04:06,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1916270062, now seen corresponding path program 48 times [2020-09-04 22:04:06,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:04:06,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308362774] [2020-09-04 22:04:06,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:04:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:07,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:04:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:07,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:04:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:07,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:07,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:07,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:07,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:08,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:08,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:08,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:08,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:09,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:09,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:09,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:09,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:10,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:10,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:10,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:10,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:11,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:11,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:11,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:11,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:12,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:12,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:12,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:12,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:13,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:13,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:13,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:14,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:14,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:14,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:15,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:15,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:15,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:16,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:16,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:17,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:17,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:17,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:18,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:18,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:19,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:19,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:20,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:20,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:20,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:21,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:21,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:21,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:22,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:22,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:24,788 INFO L134 CoverageAnalysis]: Checked inductivity of 8088 backedges. 0 proven. 4608 refuted. 0 times theorem prover too weak. 3480 trivial. 0 not checked. [2020-09-04 22:04:24,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308362774] [2020-09-04 22:04:24,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:04:24,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2020-09-04 22:04:24,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755056766] [2020-09-04 22:04:24,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2020-09-04 22:04:24,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:04:24,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2020-09-04 22:04:24,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=9901, Unknown=0, NotChecked=0, Total=10100 [2020-09-04 22:04:24,790 INFO L87 Difference]: Start difference. First operand 210 states and 211 transitions. Second operand 101 states. [2020-09-04 22:04:43,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:04:43,023 INFO L93 Difference]: Finished difference Result 219 states and 220 transitions. [2020-09-04 22:04:43,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2020-09-04 22:04:43,025 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 352 [2020-09-04 22:04:43,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:04:43,028 INFO L225 Difference]: With dead ends: 219 [2020-09-04 22:04:43,028 INFO L226 Difference]: Without dead ends: 214 [2020-09-04 22:04:43,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=395, Invalid=21955, Unknown=0, NotChecked=0, Total=22350 [2020-09-04 22:04:43,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-04 22:04:43,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-09-04 22:04:43,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-09-04 22:04:43,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 215 transitions. [2020-09-04 22:04:43,042 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 215 transitions. Word has length 352 [2020-09-04 22:04:43,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:04:43,042 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 215 transitions. [2020-09-04 22:04:43,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 101 states. [2020-09-04 22:04:43,043 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 215 transitions. [2020-09-04 22:04:43,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-09-04 22:04:43,045 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:04:43,046 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:04:43,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-09-04 22:04:43,046 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:04:43,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:04:43,046 INFO L82 PathProgramCache]: Analyzing trace with hash -2001026221, now seen corresponding path program 49 times [2020-09-04 22:04:43,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:04:43,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674494251] [2020-09-04 22:04:43,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:04:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:43,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:04:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:43,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:04:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:43,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:43,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:43,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:44,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:44,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:44,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:44,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:45,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:45,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:45,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:45,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:46,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:46,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:46,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:46,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:47,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:47,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:47,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:47,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:48,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:48,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:48,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:49,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:49,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:49,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:49,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:50,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:50,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:50,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:51,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:51,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:51,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:52,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:52,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:52,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:53,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:53,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:54,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:54,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:55,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:55,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:55,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:56,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:56,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:57,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:57,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:58,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:58,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:59,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:59,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:59,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:04:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:01,914 INFO L134 CoverageAnalysis]: Checked inductivity of 8428 backedges. 0 proven. 4802 refuted. 0 times theorem prover too weak. 3626 trivial. 0 not checked. [2020-09-04 22:05:01,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674494251] [2020-09-04 22:05:01,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:05:01,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2020-09-04 22:05:01,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196233433] [2020-09-04 22:05:01,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2020-09-04 22:05:01,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:05:01,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2020-09-04 22:05:01,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=10303, Unknown=0, NotChecked=0, Total=10506 [2020-09-04 22:05:01,916 INFO L87 Difference]: Start difference. First operand 214 states and 215 transitions. Second operand 103 states. [2020-09-04 22:05:21,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:05:21,848 INFO L93 Difference]: Finished difference Result 223 states and 224 transitions. [2020-09-04 22:05:21,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2020-09-04 22:05:21,850 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 359 [2020-09-04 22:05:21,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:05:21,853 INFO L225 Difference]: With dead ends: 223 [2020-09-04 22:05:21,853 INFO L226 Difference]: Without dead ends: 218 [2020-09-04 22:05:21,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=403, Invalid=22853, Unknown=0, NotChecked=0, Total=23256 [2020-09-04 22:05:21,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-04 22:05:21,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-04 22:05:21,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-04 22:05:21,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 219 transitions. [2020-09-04 22:05:21,866 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 219 transitions. Word has length 359 [2020-09-04 22:05:21,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:05:21,866 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 219 transitions. [2020-09-04 22:05:21,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 103 states. [2020-09-04 22:05:21,867 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 219 transitions. [2020-09-04 22:05:21,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-09-04 22:05:21,869 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:05:21,869 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:05:21,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-09-04 22:05:21,870 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:05:21,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:05:21,870 INFO L82 PathProgramCache]: Analyzing trace with hash -2035606108, now seen corresponding path program 50 times [2020-09-04 22:05:21,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:05:21,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476459121] [2020-09-04 22:05:21,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:05:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:22,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:05:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:22,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:05:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:22,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:22,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:22,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:22,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:23,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:23,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:23,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:23,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:24,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:24,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:24,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:24,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:25,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:25,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:25,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:26,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:26,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:26,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:26,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:26,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:27,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:27,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:27,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:27,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:28,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:28,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:28,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:29,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:29,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:29,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:30,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:30,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:31,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:31,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:31,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:31,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:32,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:32,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:33,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:33,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:34,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:34,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:34,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:35,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:35,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:36,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:36,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:37,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:37,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:38,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:38,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:39,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:39,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:05:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:42,035 INFO L134 CoverageAnalysis]: Checked inductivity of 8775 backedges. 0 proven. 5000 refuted. 0 times theorem prover too weak. 3775 trivial. 0 not checked. [2020-09-04 22:05:42,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476459121] [2020-09-04 22:05:42,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:05:42,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2020-09-04 22:05:42,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82020387] [2020-09-04 22:05:42,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2020-09-04 22:05:42,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:05:42,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2020-09-04 22:05:42,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=10713, Unknown=0, NotChecked=0, Total=10920 [2020-09-04 22:05:42,037 INFO L87 Difference]: Start difference. First operand 218 states and 219 transitions. Second operand 105 states. [2020-09-04 22:06:02,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:06:02,592 INFO L93 Difference]: Finished difference Result 227 states and 228 transitions. [2020-09-04 22:06:02,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2020-09-04 22:06:02,594 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 366 [2020-09-04 22:06:02,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:06:02,596 INFO L225 Difference]: With dead ends: 227 [2020-09-04 22:06:02,597 INFO L226 Difference]: Without dead ends: 222 [2020-09-04 22:06:02,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=411, Invalid=23769, Unknown=0, NotChecked=0, Total=24180 [2020-09-04 22:06:02,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-09-04 22:06:02,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2020-09-04 22:06:02,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-09-04 22:06:02,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 223 transitions. [2020-09-04 22:06:02,609 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 223 transitions. Word has length 366 [2020-09-04 22:06:02,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:06:02,609 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 223 transitions. [2020-09-04 22:06:02,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 105 states. [2020-09-04 22:06:02,610 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 223 transitions. [2020-09-04 22:06:02,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-09-04 22:06:02,612 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:06:02,613 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:06:02,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-09-04 22:06:02,613 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:06:02,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:06:02,613 INFO L82 PathProgramCache]: Analyzing trace with hash 318692325, now seen corresponding path program 51 times [2020-09-04 22:06:02,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:06:02,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692190723] [2020-09-04 22:06:02,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:06:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:02,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:06:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:02,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:06:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:03,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:03,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:03,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:03,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:03,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:04,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:04,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:04,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:04,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:05,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:05,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:05,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:05,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:06,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:06,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:06,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:06,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:07,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:07,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:07,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:08,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:08,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:08,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:08,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:09,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:09,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:09,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:10,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:10,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:10,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:11,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:11,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:11,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:12,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:12,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:12,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:13,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:13,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:13,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:14,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:14,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:15,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:15,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:15,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:16,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:16,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:17,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:17,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:18,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:18,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:19,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:19,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:20,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:21,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:23,311 INFO L134 CoverageAnalysis]: Checked inductivity of 9129 backedges. 0 proven. 5202 refuted. 0 times theorem prover too weak. 3927 trivial. 0 not checked. [2020-09-04 22:06:23,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692190723] [2020-09-04 22:06:23,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:06:23,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2020-09-04 22:06:23,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591907526] [2020-09-04 22:06:23,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2020-09-04 22:06:23,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:06:23,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2020-09-04 22:06:23,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=11131, Unknown=0, NotChecked=0, Total=11342 [2020-09-04 22:06:23,313 INFO L87 Difference]: Start difference. First operand 222 states and 223 transitions. Second operand 107 states. [2020-09-04 22:06:45,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:06:45,233 INFO L93 Difference]: Finished difference Result 231 states and 232 transitions. [2020-09-04 22:06:45,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2020-09-04 22:06:45,235 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 373 [2020-09-04 22:06:45,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:06:45,237 INFO L225 Difference]: With dead ends: 231 [2020-09-04 22:06:45,238 INFO L226 Difference]: Without dead ends: 226 [2020-09-04 22:06:45,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=419, Invalid=24703, Unknown=0, NotChecked=0, Total=25122 [2020-09-04 22:06:45,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-04 22:06:45,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-04 22:06:45,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-04 22:06:45,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 227 transitions. [2020-09-04 22:06:45,250 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 227 transitions. Word has length 373 [2020-09-04 22:06:45,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:06:45,250 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 227 transitions. [2020-09-04 22:06:45,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 107 states. [2020-09-04 22:06:45,250 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 227 transitions. [2020-09-04 22:06:45,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-09-04 22:06:45,253 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:06:45,253 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:06:45,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-09-04 22:06:45,254 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:06:45,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:06:45,254 INFO L82 PathProgramCache]: Analyzing trace with hash -415908042, now seen corresponding path program 52 times [2020-09-04 22:06:45,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:06:45,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799451438] [2020-09-04 22:06:45,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:06:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:45,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:06:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:45,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:06:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:45,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:45,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:46,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:46,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:46,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:46,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:47,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:47,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:47,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:47,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:48,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:48,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:48,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:49,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:49,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:49,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:49,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:50,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:50,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:50,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:51,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:51,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:51,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:51,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:52,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:52,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:52,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:53,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:53,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:54,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:54,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:54,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:55,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:55,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:56,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:56,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:57,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:57,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:57,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:58,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:58,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:59,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:59,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:06:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:00,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:00,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:01,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:01,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:02,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:02,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:03,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:03,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:04,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:05,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:07,467 INFO L134 CoverageAnalysis]: Checked inductivity of 9490 backedges. 0 proven. 5408 refuted. 0 times theorem prover too weak. 4082 trivial. 0 not checked. [2020-09-04 22:07:07,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799451438] [2020-09-04 22:07:07,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:07:07,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2020-09-04 22:07:07,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763543301] [2020-09-04 22:07:07,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2020-09-04 22:07:07,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:07,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2020-09-04 22:07:07,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=11557, Unknown=0, NotChecked=0, Total=11772 [2020-09-04 22:07:07,469 INFO L87 Difference]: Start difference. First operand 226 states and 227 transitions. Second operand 109 states. [2020-09-04 22:07:31,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:31,622 INFO L93 Difference]: Finished difference Result 235 states and 236 transitions. [2020-09-04 22:07:31,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2020-09-04 22:07:31,624 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 380 [2020-09-04 22:07:31,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:31,626 INFO L225 Difference]: With dead ends: 235 [2020-09-04 22:07:31,626 INFO L226 Difference]: Without dead ends: 230 [2020-09-04 22:07:31,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1378 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=427, Invalid=25655, Unknown=0, NotChecked=0, Total=26082 [2020-09-04 22:07:31,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-09-04 22:07:31,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-09-04 22:07:31,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-09-04 22:07:31,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 231 transitions. [2020-09-04 22:07:31,638 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 231 transitions. Word has length 380 [2020-09-04 22:07:31,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:31,639 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 231 transitions. [2020-09-04 22:07:31,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 109 states. [2020-09-04 22:07:31,639 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 231 transitions. [2020-09-04 22:07:31,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-09-04 22:07:31,641 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:31,641 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:07:31,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-09-04 22:07:31,642 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:07:31,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:31,642 INFO L82 PathProgramCache]: Analyzing trace with hash -2128149897, now seen corresponding path program 53 times [2020-09-04 22:07:31,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:31,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092414864] [2020-09-04 22:07:31,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:31,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:31,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:07:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:32,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:32,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:32,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:32,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:33,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:33,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:33,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:33,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:34,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:34,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:34,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:34,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:35,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:35,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:35,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:36,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:36,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:36,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:37,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:37,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:37,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:38,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:38,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:39,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:39,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:39,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:40,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:40,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:40,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:41,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:41,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:41,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:42,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:42,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:42,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:43,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:43,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:44,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:44,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:44,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:45,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:45,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:46,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:46,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:47,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:47,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:47,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:48,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:48,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:49,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:50,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:50,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:50,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:51,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:51,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:52,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:53,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:07:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:55,720 INFO L134 CoverageAnalysis]: Checked inductivity of 9858 backedges. 0 proven. 5618 refuted. 0 times theorem prover too weak. 4240 trivial. 0 not checked. [2020-09-04 22:07:55,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092414864] [2020-09-04 22:07:55,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:07:55,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2020-09-04 22:07:55,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457424383] [2020-09-04 22:07:55,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2020-09-04 22:07:55,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:55,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2020-09-04 22:07:55,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=11991, Unknown=0, NotChecked=0, Total=12210 [2020-09-04 22:07:55,722 INFO L87 Difference]: Start difference. First operand 230 states and 231 transitions. Second operand 111 states. [2020-09-04 22:08:20,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:08:20,741 INFO L93 Difference]: Finished difference Result 239 states and 240 transitions. [2020-09-04 22:08:20,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2020-09-04 22:08:20,744 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 387 [2020-09-04 22:08:20,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:08:20,746 INFO L225 Difference]: With dead ends: 239 [2020-09-04 22:08:20,746 INFO L226 Difference]: Without dead ends: 234 [2020-09-04 22:08:20,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 25.5s TimeCoverageRelationStatistics Valid=435, Invalid=26625, Unknown=0, NotChecked=0, Total=27060 [2020-09-04 22:08:20,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-09-04 22:08:20,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-09-04 22:08:20,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-09-04 22:08:20,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 235 transitions. [2020-09-04 22:08:20,757 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 235 transitions. Word has length 387 [2020-09-04 22:08:20,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:08:20,757 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 235 transitions. [2020-09-04 22:08:20,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 111 states. [2020-09-04 22:08:20,757 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 235 transitions. [2020-09-04 22:08:20,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-09-04 22:08:20,760 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:08:20,760 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:08:20,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-09-04 22:08:20,760 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:08:20,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:08:20,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1085673784, now seen corresponding path program 54 times [2020-09-04 22:08:20,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:08:20,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638867482] [2020-09-04 22:08:20,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:08:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:21,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:08:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:21,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:08:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:21,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:21,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:21,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:21,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:21,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:22,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:22,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:22,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:22,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:23,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:23,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:23,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:23,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:24,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:24,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:24,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:24,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:24,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:25,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:25,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:25,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:26,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:26,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:26,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:27,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:27,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:27,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:28,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:28,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:29,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:29,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:29,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:29,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:30,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:30,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:30,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:31,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:31,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:32,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:32,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:33,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:33,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:34,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:34,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:34,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:35,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:35,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:36,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:36,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:37,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:38,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:38,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:39,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:39,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:39,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:40,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:41,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:41,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:42,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:08:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:08:45,140 INFO L134 CoverageAnalysis]: Checked inductivity of 10233 backedges. 0 proven. 5832 refuted. 0 times theorem prover too weak. 4401 trivial. 0 not checked. [2020-09-04 22:08:45,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638867482] [2020-09-04 22:08:45,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:08:45,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2020-09-04 22:08:45,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020278850] [2020-09-04 22:08:45,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2020-09-04 22:08:45,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:08:45,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2020-09-04 22:08:45,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=12433, Unknown=0, NotChecked=0, Total=12656 [2020-09-04 22:08:45,142 INFO L87 Difference]: Start difference. First operand 234 states and 235 transitions. Second operand 113 states.