/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/loop-new/count_by_1_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 18:09:16,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 18:09:16,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 18:09:16,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 18:09:16,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 18:09:16,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 18:09:16,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 18:09:16,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 18:09:16,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 18:09:16,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 18:09:16,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 18:09:16,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 18:09:16,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 18:09:16,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 18:09:16,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 18:09:16,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 18:09:16,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 18:09:16,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 18:09:16,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 18:09:16,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 18:09:16,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 18:09:16,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 18:09:16,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 18:09:16,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 18:09:16,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 18:09:16,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 18:09:16,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 18:09:16,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 18:09:16,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 18:09:16,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 18:09:16,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 18:09:16,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 18:09:16,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 18:09:16,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 18:09:16,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 18:09:16,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 18:09:16,053 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 18:09:16,062 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 18:09:16,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 18:09:16,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 18:09:16,064 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 18:09:16,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 18:09:16,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 18:09:16,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 18:09:16,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 18:09:16,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 18:09:16,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 18:09:16,065 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 18:09:16,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 18:09:16,066 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 18:09:16,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 18:09:16,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 18:09:16,066 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 18:09:16,067 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 18:09:16,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 18:09:16,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 18:09:16,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 18:09:16,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 18:09:16,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 18:09:16,068 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 [2020-07-17 18:09:16,349 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 18:09:16,364 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 18:09:16,368 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 18:09:16,369 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 18:09:16,369 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 18:09:16,370 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i [2020-07-17 18:09:16,443 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de4e674aa/b850552acf6345d5bc2cfd46c5ec84ae/FLAGa294b7f81 [2020-07-17 18:09:16,870 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 18:09:16,871 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1_variant.i [2020-07-17 18:09:16,877 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de4e674aa/b850552acf6345d5bc2cfd46c5ec84ae/FLAGa294b7f81 [2020-07-17 18:09:17,244 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de4e674aa/b850552acf6345d5bc2cfd46c5ec84ae [2020-07-17 18:09:17,253 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 18:09:17,256 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 18:09:17,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 18:09:17,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 18:09:17,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 18:09:17,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 06:09:17" (1/1) ... [2020-07-17 18:09:17,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@170f0c8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:09:17, skipping insertion in model container [2020-07-17 18:09:17,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 06:09:17" (1/1) ... [2020-07-17 18:09:17,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 18:09:17,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 18:09:17,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 18:09:17,467 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 18:09:17,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 18:09:17,498 INFO L208 MainTranslator]: Completed translation [2020-07-17 18:09:17,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:09:17 WrapperNode [2020-07-17 18:09:17,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 18:09:17,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 18:09:17,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 18:09:17,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 18:09:17,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:09:17" (1/1) ... [2020-07-17 18:09:17,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:09:17" (1/1) ... [2020-07-17 18:09:17,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:09:17" (1/1) ... [2020-07-17 18:09:17,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:09:17" (1/1) ... [2020-07-17 18:09:17,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:09:17" (1/1) ... [2020-07-17 18:09:17,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:09:17" (1/1) ... [2020-07-17 18:09:17,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:09:17" (1/1) ... [2020-07-17 18:09:17,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 18:09:17,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 18:09:17,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 18:09:17,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 18:09:17,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:09:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 18:09:17,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 18:09:17,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 18:09:17,694 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 18:09:17,695 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 18:09:17,695 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 18:09:17,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 18:09:17,695 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 18:09:17,695 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 18:09:17,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 18:09:17,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 18:09:17,696 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 18:09:17,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 18:09:17,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 18:09:17,875 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 18:09:17,875 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 18:09:17,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 06:09:17 BoogieIcfgContainer [2020-07-17 18:09:17,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 18:09:17,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 18:09:17,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 18:09:17,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 18:09:17,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 06:09:17" (1/3) ... [2020-07-17 18:09:17,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b9c635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 06:09:17, skipping insertion in model container [2020-07-17 18:09:17,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:09:17" (2/3) ... [2020-07-17 18:09:17,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b9c635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 06:09:17, skipping insertion in model container [2020-07-17 18:09:17,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 06:09:17" (3/3) ... [2020-07-17 18:09:17,887 INFO L109 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i [2020-07-17 18:09:17,897 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 18:09:17,906 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 18:09:17,921 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 18:09:17,944 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 18:09:17,944 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 18:09:17,945 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 18:09:17,945 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 18:09:17,945 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 18:09:17,945 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 18:09:17,945 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 18:09:17,945 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 18:09:17,960 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-07-17 18:09:17,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-17 18:09:17,971 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:09:17,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:09:17,973 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:09:17,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:09:17,980 INFO L82 PathProgramCache]: Analyzing trace with hash 576660498, now seen corresponding path program 1 times [2020-07-17 18:09:17,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:09:17,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818483037] [2020-07-17 18:09:17,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:09:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:18,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 18:09:18,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818483037] [2020-07-17 18:09:18,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 18:09:18,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 18:09:18,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28271634] [2020-07-17 18:09:18,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 18:09:18,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:09:18,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 18:09:18,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 18:09:18,342 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-07-17 18:09:18,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:09:18,449 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2020-07-17 18:09:18,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 18:09:18,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-07-17 18:09:18,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:09:18,459 INFO L225 Difference]: With dead ends: 46 [2020-07-17 18:09:18,459 INFO L226 Difference]: Without dead ends: 25 [2020-07-17 18:09:18,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 18:09:18,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-17 18:09:18,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-07-17 18:09:18,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-17 18:09:18,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-07-17 18:09:18,507 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 11 [2020-07-17 18:09:18,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:09:18,508 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-07-17 18:09:18,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 18:09:18,508 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-07-17 18:09:18,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-17 18:09:18,509 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:09:18,510 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:09:18,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 18:09:18,511 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:09:18,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:09:18,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1548867886, now seen corresponding path program 1 times [2020-07-17 18:09:18,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:09:18,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934433432] [2020-07-17 18:09:18,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:09:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:18,616 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 18:09:18,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934433432] [2020-07-17 18:09:18,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:09:18,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-07-17 18:09:18,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736425800] [2020-07-17 18:09:18,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 18:09:18,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:09:18,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 18:09:18,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-17 18:09:18,622 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 7 states. [2020-07-17 18:09:18,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:09:18,739 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-07-17 18:09:18,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-17 18:09:18,739 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-07-17 18:09:18,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:09:18,741 INFO L225 Difference]: With dead ends: 36 [2020-07-17 18:09:18,741 INFO L226 Difference]: Without dead ends: 34 [2020-07-17 18:09:18,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-07-17 18:09:18,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-07-17 18:09:18,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-07-17 18:09:18,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-17 18:09:18,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-07-17 18:09:18,755 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 20 [2020-07-17 18:09:18,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:09:18,755 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-07-17 18:09:18,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 18:09:18,756 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-07-17 18:09:18,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-17 18:09:18,757 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:09:18,757 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:09:18,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 18:09:18,758 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:09:18,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:09:18,760 INFO L82 PathProgramCache]: Analyzing trace with hash -677174382, now seen corresponding path program 2 times [2020-07-17 18:09:18,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:09:18,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312431668] [2020-07-17 18:09:18,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:09:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:18,979 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-17 18:09:18,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312431668] [2020-07-17 18:09:18,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:09:18,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-07-17 18:09:18,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829000088] [2020-07-17 18:09:18,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 18:09:18,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:09:18,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 18:09:18,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-07-17 18:09:18,984 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 9 states. [2020-07-17 18:09:19,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:09:19,182 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2020-07-17 18:09:19,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-17 18:09:19,182 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-07-17 18:09:19,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:09:19,184 INFO L225 Difference]: With dead ends: 45 [2020-07-17 18:09:19,184 INFO L226 Difference]: Without dead ends: 43 [2020-07-17 18:09:19,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-07-17 18:09:19,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-17 18:09:19,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-07-17 18:09:19,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-17 18:09:19,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-07-17 18:09:19,198 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 29 [2020-07-17 18:09:19,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:09:19,199 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-07-17 18:09:19,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 18:09:19,199 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-07-17 18:09:19,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-17 18:09:19,201 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:09:19,201 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:09:19,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 18:09:19,202 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:09:19,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:09:19,202 INFO L82 PathProgramCache]: Analyzing trace with hash 785729966, now seen corresponding path program 3 times [2020-07-17 18:09:19,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:09:19,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133754011] [2020-07-17 18:09:19,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:09:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:19,378 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-17 18:09:19,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133754011] [2020-07-17 18:09:19,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:09:19,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-07-17 18:09:19,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176705843] [2020-07-17 18:09:19,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-17 18:09:19,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:09:19,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-17 18:09:19,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-07-17 18:09:19,383 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 11 states. [2020-07-17 18:09:19,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:09:19,572 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-07-17 18:09:19,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-17 18:09:19,572 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-07-17 18:09:19,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:09:19,574 INFO L225 Difference]: With dead ends: 54 [2020-07-17 18:09:19,574 INFO L226 Difference]: Without dead ends: 52 [2020-07-17 18:09:19,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-07-17 18:09:19,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-07-17 18:09:19,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-07-17 18:09:19,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-17 18:09:19,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-07-17 18:09:19,586 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 38 [2020-07-17 18:09:19,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:09:19,587 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-07-17 18:09:19,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-17 18:09:19,587 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-07-17 18:09:19,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-17 18:09:19,589 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:09:19,589 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:09:19,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 18:09:19,590 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:09:19,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:09:19,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1857438482, now seen corresponding path program 4 times [2020-07-17 18:09:19,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:09:19,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905492594] [2020-07-17 18:09:19,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:09:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:19,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:19,749 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-07-17 18:09:19,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905492594] [2020-07-17 18:09:19,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:09:19,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-07-17 18:09:19,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202218593] [2020-07-17 18:09:19,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-17 18:09:19,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:09:19,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-17 18:09:19,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-07-17 18:09:19,752 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 13 states. [2020-07-17 18:09:19,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:09:19,958 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2020-07-17 18:09:19,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-17 18:09:19,959 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2020-07-17 18:09:19,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:09:19,961 INFO L225 Difference]: With dead ends: 63 [2020-07-17 18:09:19,961 INFO L226 Difference]: Without dead ends: 61 [2020-07-17 18:09:19,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-07-17 18:09:19,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-17 18:09:19,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-07-17 18:09:19,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-17 18:09:19,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2020-07-17 18:09:19,980 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 47 [2020-07-17 18:09:19,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:09:19,982 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2020-07-17 18:09:19,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-17 18:09:19,983 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2020-07-17 18:09:19,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-17 18:09:19,986 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:09:19,987 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:09:19,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 18:09:19,987 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:09:19,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:09:19,988 INFO L82 PathProgramCache]: Analyzing trace with hash -426927570, now seen corresponding path program 5 times [2020-07-17 18:09:19,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:09:19,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977715099] [2020-07-17 18:09:19,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:09:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:20,183 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 10 proven. 60 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-17 18:09:20,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977715099] [2020-07-17 18:09:20,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:09:20,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-07-17 18:09:20,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075097423] [2020-07-17 18:09:20,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-17 18:09:20,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:09:20,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-17 18:09:20,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-07-17 18:09:20,187 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 15 states. [2020-07-17 18:09:20,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:09:20,459 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2020-07-17 18:09:20,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-17 18:09:20,459 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-07-17 18:09:20,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:09:20,461 INFO L225 Difference]: With dead ends: 72 [2020-07-17 18:09:20,461 INFO L226 Difference]: Without dead ends: 70 [2020-07-17 18:09:20,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2020-07-17 18:09:20,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-17 18:09:20,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-07-17 18:09:20,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-17 18:09:20,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2020-07-17 18:09:20,473 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 56 [2020-07-17 18:09:20,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:09:20,473 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2020-07-17 18:09:20,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-17 18:09:20,473 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2020-07-17 18:09:20,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-17 18:09:20,474 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:09:20,475 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:09:20,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 18:09:20,475 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:09:20,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:09:20,476 INFO L82 PathProgramCache]: Analyzing trace with hash -32472430, now seen corresponding path program 6 times [2020-07-17 18:09:20,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:09:20,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401605702] [2020-07-17 18:09:20,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:09:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:20,700 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 12 proven. 87 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-07-17 18:09:20,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401605702] [2020-07-17 18:09:20,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:09:20,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-07-17 18:09:20,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162111383] [2020-07-17 18:09:20,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-17 18:09:20,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:09:20,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-17 18:09:20,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-07-17 18:09:20,705 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 17 states. [2020-07-17 18:09:21,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:09:21,011 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2020-07-17 18:09:21,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-17 18:09:21,012 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 65 [2020-07-17 18:09:21,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:09:21,014 INFO L225 Difference]: With dead ends: 81 [2020-07-17 18:09:21,014 INFO L226 Difference]: Without dead ends: 79 [2020-07-17 18:09:21,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-07-17 18:09:21,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-07-17 18:09:21,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2020-07-17 18:09:21,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-17 18:09:21,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2020-07-17 18:09:21,026 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 65 [2020-07-17 18:09:21,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:09:21,027 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2020-07-17 18:09:21,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-17 18:09:21,027 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2020-07-17 18:09:21,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-07-17 18:09:21,029 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:09:21,029 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:09:21,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 18:09:21,029 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:09:21,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:09:21,030 INFO L82 PathProgramCache]: Analyzing trace with hash 872598190, now seen corresponding path program 7 times [2020-07-17 18:09:21,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:09:21,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524294682] [2020-07-17 18:09:21,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:09:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:21,303 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 14 proven. 119 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-07-17 18:09:21,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524294682] [2020-07-17 18:09:21,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:09:21,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-07-17 18:09:21,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827962659] [2020-07-17 18:09:21,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-17 18:09:21,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:09:21,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-17 18:09:21,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-07-17 18:09:21,306 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 19 states. [2020-07-17 18:09:21,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:09:21,688 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2020-07-17 18:09:21,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-07-17 18:09:21,689 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 74 [2020-07-17 18:09:21,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:09:21,693 INFO L225 Difference]: With dead ends: 90 [2020-07-17 18:09:21,693 INFO L226 Difference]: Without dead ends: 88 [2020-07-17 18:09:21,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=326, Invalid=796, Unknown=0, NotChecked=0, Total=1122 [2020-07-17 18:09:21,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-07-17 18:09:21,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-07-17 18:09:21,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-07-17 18:09:21,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2020-07-17 18:09:21,707 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 74 [2020-07-17 18:09:21,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:09:21,708 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2020-07-17 18:09:21,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-17 18:09:21,708 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2020-07-17 18:09:21,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-17 18:09:21,709 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:09:21,710 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:09:21,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 18:09:21,710 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:09:21,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:09:21,710 INFO L82 PathProgramCache]: Analyzing trace with hash -299245038, now seen corresponding path program 8 times [2020-07-17 18:09:21,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:09:21,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040918556] [2020-07-17 18:09:21,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:09:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:21,970 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 16 proven. 156 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-07-17 18:09:21,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040918556] [2020-07-17 18:09:21,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:09:21,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-07-17 18:09:21,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523744703] [2020-07-17 18:09:21,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-17 18:09:21,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:09:21,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-17 18:09:21,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-07-17 18:09:21,981 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 21 states. [2020-07-17 18:09:22,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:09:22,419 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2020-07-17 18:09:22,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-07-17 18:09:22,420 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 83 [2020-07-17 18:09:22,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:09:22,421 INFO L225 Difference]: With dead ends: 99 [2020-07-17 18:09:22,421 INFO L226 Difference]: Without dead ends: 97 [2020-07-17 18:09:22,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=411, Invalid=995, Unknown=0, NotChecked=0, Total=1406 [2020-07-17 18:09:22,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-07-17 18:09:22,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2020-07-17 18:09:22,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-07-17 18:09:22,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2020-07-17 18:09:22,448 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 83 [2020-07-17 18:09:22,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:09:22,448 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2020-07-17 18:09:22,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-17 18:09:22,449 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2020-07-17 18:09:22,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-07-17 18:09:22,450 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:09:22,450 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:09:22,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-17 18:09:22,451 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:09:22,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:09:22,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1245914322, now seen corresponding path program 9 times [2020-07-17 18:09:22,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:09:22,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382162370] [2020-07-17 18:09:22,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:09:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:22,737 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 18 proven. 198 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-07-17 18:09:22,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382162370] [2020-07-17 18:09:22,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:09:22,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-07-17 18:09:22,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957126861] [2020-07-17 18:09:22,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-17 18:09:22,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:09:22,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-17 18:09:22,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-07-17 18:09:22,740 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 23 states. [2020-07-17 18:09:23,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:09:23,240 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2020-07-17 18:09:23,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-07-17 18:09:23,240 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 92 [2020-07-17 18:09:23,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:09:23,242 INFO L225 Difference]: With dead ends: 108 [2020-07-17 18:09:23,242 INFO L226 Difference]: Without dead ends: 106 [2020-07-17 18:09:23,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=506, Invalid=1216, Unknown=0, NotChecked=0, Total=1722 [2020-07-17 18:09:23,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-07-17 18:09:23,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-07-17 18:09:23,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-07-17 18:09:23,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2020-07-17 18:09:23,254 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 92 [2020-07-17 18:09:23,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:09:23,255 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2020-07-17 18:09:23,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-17 18:09:23,255 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2020-07-17 18:09:23,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-07-17 18:09:23,256 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:09:23,256 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:09:23,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-17 18:09:23,257 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:09:23,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:09:23,257 INFO L82 PathProgramCache]: Analyzing trace with hash 2038063506, now seen corresponding path program 10 times [2020-07-17 18:09:23,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:09:23,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835188382] [2020-07-17 18:09:23,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:09:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:23,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:23,620 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 20 proven. 245 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-07-17 18:09:23,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835188382] [2020-07-17 18:09:23,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:09:23,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-07-17 18:09:23,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172314174] [2020-07-17 18:09:23,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-17 18:09:23,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:09:23,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-17 18:09:23,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-07-17 18:09:23,623 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 25 states. [2020-07-17 18:09:24,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:09:24,217 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2020-07-17 18:09:24,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-17 18:09:24,218 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 101 [2020-07-17 18:09:24,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:09:24,219 INFO L225 Difference]: With dead ends: 117 [2020-07-17 18:09:24,219 INFO L226 Difference]: Without dead ends: 115 [2020-07-17 18:09:24,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=611, Invalid=1459, Unknown=0, NotChecked=0, Total=2070 [2020-07-17 18:09:24,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-07-17 18:09:24,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2020-07-17 18:09:24,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-07-17 18:09:24,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2020-07-17 18:09:24,232 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 101 [2020-07-17 18:09:24,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:09:24,232 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2020-07-17 18:09:24,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-17 18:09:24,232 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2020-07-17 18:09:24,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-07-17 18:09:24,234 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:09:24,234 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:09:24,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-17 18:09:24,234 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:09:24,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:09:24,235 INFO L82 PathProgramCache]: Analyzing trace with hash 2017708974, now seen corresponding path program 11 times [2020-07-17 18:09:24,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:09:24,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997997939] [2020-07-17 18:09:24,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:09:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:24,604 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 22 proven. 297 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-07-17 18:09:24,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997997939] [2020-07-17 18:09:24,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:09:24,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-07-17 18:09:24,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362515807] [2020-07-17 18:09:24,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-07-17 18:09:24,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:09:24,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-07-17 18:09:24,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2020-07-17 18:09:24,607 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 27 states. [2020-07-17 18:09:25,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:09:25,293 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2020-07-17 18:09:25,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-07-17 18:09:25,294 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 110 [2020-07-17 18:09:25,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:09:25,296 INFO L225 Difference]: With dead ends: 126 [2020-07-17 18:09:25,296 INFO L226 Difference]: Without dead ends: 124 [2020-07-17 18:09:25,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=726, Invalid=1724, Unknown=0, NotChecked=0, Total=2450 [2020-07-17 18:09:25,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-07-17 18:09:25,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-07-17 18:09:25,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-07-17 18:09:25,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2020-07-17 18:09:25,311 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 110 [2020-07-17 18:09:25,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:09:25,312 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2020-07-17 18:09:25,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-07-17 18:09:25,312 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2020-07-17 18:09:25,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-07-17 18:09:25,317 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:09:25,317 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:09:25,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-17 18:09:25,317 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:09:25,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:09:25,318 INFO L82 PathProgramCache]: Analyzing trace with hash 746193170, now seen corresponding path program 12 times [2020-07-17 18:09:25,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:09:25,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492853450] [2020-07-17 18:09:25,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:09:25,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:25,770 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 24 proven. 354 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-07-17 18:09:25,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492853450] [2020-07-17 18:09:25,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:09:25,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-07-17 18:09:25,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659882696] [2020-07-17 18:09:25,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-17 18:09:25,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:09:25,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-17 18:09:25,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2020-07-17 18:09:25,775 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 29 states. [2020-07-17 18:09:26,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:09:26,506 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2020-07-17 18:09:26,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-07-17 18:09:26,507 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 119 [2020-07-17 18:09:26,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:09:26,508 INFO L225 Difference]: With dead ends: 135 [2020-07-17 18:09:26,508 INFO L226 Difference]: Without dead ends: 133 [2020-07-17 18:09:26,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=851, Invalid=2011, Unknown=0, NotChecked=0, Total=2862 [2020-07-17 18:09:26,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-07-17 18:09:26,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2020-07-17 18:09:26,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-07-17 18:09:26,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2020-07-17 18:09:26,524 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 119 [2020-07-17 18:09:26,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:09:26,524 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2020-07-17 18:09:26,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-17 18:09:26,525 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2020-07-17 18:09:26,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-07-17 18:09:26,527 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:09:26,527 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:09:26,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-17 18:09:26,527 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:09:26,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:09:26,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1981783086, now seen corresponding path program 13 times [2020-07-17 18:09:26,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:09:26,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812515653] [2020-07-17 18:09:26,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:09:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:26,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:27,008 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 26 proven. 416 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-07-17 18:09:27,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812515653] [2020-07-17 18:09:27,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:09:27,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-07-17 18:09:27,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172805233] [2020-07-17 18:09:27,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-17 18:09:27,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:09:27,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-17 18:09:27,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2020-07-17 18:09:27,010 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 31 states. [2020-07-17 18:09:27,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:09:27,827 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2020-07-17 18:09:27,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-07-17 18:09:27,827 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 128 [2020-07-17 18:09:27,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:09:27,829 INFO L225 Difference]: With dead ends: 144 [2020-07-17 18:09:27,829 INFO L226 Difference]: Without dead ends: 142 [2020-07-17 18:09:27,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=986, Invalid=2320, Unknown=0, NotChecked=0, Total=3306 [2020-07-17 18:09:27,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-07-17 18:09:27,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2020-07-17 18:09:27,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-07-17 18:09:27,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2020-07-17 18:09:27,842 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 128 [2020-07-17 18:09:27,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:09:27,843 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2020-07-17 18:09:27,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-17 18:09:27,843 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2020-07-17 18:09:27,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-07-17 18:09:27,844 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:09:27,845 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:09:27,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-17 18:09:27,845 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:09:27,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:09:27,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1705033874, now seen corresponding path program 14 times [2020-07-17 18:09:27,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:09:27,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085727953] [2020-07-17 18:09:27,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:09:27,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:28,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:28,353 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 28 proven. 483 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-07-17 18:09:28,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085727953] [2020-07-17 18:09:28,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:09:28,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-07-17 18:09:28,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118069799] [2020-07-17 18:09:28,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-07-17 18:09:28,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:09:28,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-07-17 18:09:28,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2020-07-17 18:09:28,357 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 33 states. [2020-07-17 18:09:29,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:09:29,198 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2020-07-17 18:09:29,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-07-17 18:09:29,199 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 137 [2020-07-17 18:09:29,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:09:29,200 INFO L225 Difference]: With dead ends: 153 [2020-07-17 18:09:29,200 INFO L226 Difference]: Without dead ends: 151 [2020-07-17 18:09:29,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1131, Invalid=2651, Unknown=0, NotChecked=0, Total=3782 [2020-07-17 18:09:29,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-07-17 18:09:29,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2020-07-17 18:09:29,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-07-17 18:09:29,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2020-07-17 18:09:29,212 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 137 [2020-07-17 18:09:29,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:09:29,213 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2020-07-17 18:09:29,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-07-17 18:09:29,213 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2020-07-17 18:09:29,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-07-17 18:09:29,215 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:09:29,215 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:09:29,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-17 18:09:29,215 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:09:29,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:09:29,216 INFO L82 PathProgramCache]: Analyzing trace with hash 400051374, now seen corresponding path program 15 times [2020-07-17 18:09:29,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:09:29,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997055172] [2020-07-17 18:09:29,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:09:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:29,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:29,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 30 proven. 555 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-07-17 18:09:29,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997055172] [2020-07-17 18:09:29,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:09:29,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-07-17 18:09:29,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391750374] [2020-07-17 18:09:29,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-07-17 18:09:29,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:09:29,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-07-17 18:09:29,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=898, Unknown=0, NotChecked=0, Total=1190 [2020-07-17 18:09:29,927 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 35 states. [2020-07-17 18:09:31,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:09:31,087 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2020-07-17 18:09:31,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-07-17 18:09:31,088 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 146 [2020-07-17 18:09:31,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:09:31,090 INFO L225 Difference]: With dead ends: 162 [2020-07-17 18:09:31,090 INFO L226 Difference]: Without dead ends: 160 [2020-07-17 18:09:31,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1286, Invalid=3004, Unknown=0, NotChecked=0, Total=4290 [2020-07-17 18:09:31,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-07-17 18:09:31,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2020-07-17 18:09:31,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-07-17 18:09:31,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2020-07-17 18:09:31,103 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 146 [2020-07-17 18:09:31,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:09:31,104 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2020-07-17 18:09:31,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-07-17 18:09:31,104 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2020-07-17 18:09:31,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-07-17 18:09:31,106 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:09:31,106 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:09:31,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-17 18:09:31,106 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:09:31,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:09:31,107 INFO L82 PathProgramCache]: Analyzing trace with hash -714694638, now seen corresponding path program 16 times [2020-07-17 18:09:31,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:09:31,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622915593] [2020-07-17 18:09:31,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:09:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:31,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:31,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:31,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:31,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 32 proven. 632 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-07-17 18:09:31,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622915593] [2020-07-17 18:09:31,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:09:31,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-07-17 18:09:31,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713176445] [2020-07-17 18:09:31,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-07-17 18:09:31,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:09:31,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-07-17 18:09:31,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1005, Unknown=0, NotChecked=0, Total=1332 [2020-07-17 18:09:31,744 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 37 states. [2020-07-17 18:09:32,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:09:32,808 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2020-07-17 18:09:32,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-07-17 18:09:32,809 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 155 [2020-07-17 18:09:32,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:09:32,811 INFO L225 Difference]: With dead ends: 171 [2020-07-17 18:09:32,812 INFO L226 Difference]: Without dead ends: 169 [2020-07-17 18:09:32,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1451, Invalid=3379, Unknown=0, NotChecked=0, Total=4830 [2020-07-17 18:09:32,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-07-17 18:09:32,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2020-07-17 18:09:32,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-07-17 18:09:32,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2020-07-17 18:09:32,824 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 155 [2020-07-17 18:09:32,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:09:32,825 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2020-07-17 18:09:32,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-07-17 18:09:32,825 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2020-07-17 18:09:32,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-07-17 18:09:32,827 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:09:32,827 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:09:32,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-17 18:09:32,827 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:09:32,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:09:32,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1275732690, now seen corresponding path program 17 times [2020-07-17 18:09:32,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:09:32,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850655642] [2020-07-17 18:09:32,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:09:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:33,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 34 proven. 714 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-07-17 18:09:33,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850655642] [2020-07-17 18:09:33,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:09:33,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-07-17 18:09:33,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45961340] [2020-07-17 18:09:33,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-07-17 18:09:33,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:09:33,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-07-17 18:09:33,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=1118, Unknown=0, NotChecked=0, Total=1482 [2020-07-17 18:09:33,566 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 39 states. [2020-07-17 18:09:34,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:09:34,692 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2020-07-17 18:09:34,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-07-17 18:09:34,692 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 164 [2020-07-17 18:09:34,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:09:34,695 INFO L225 Difference]: With dead ends: 180 [2020-07-17 18:09:34,695 INFO L226 Difference]: Without dead ends: 178 [2020-07-17 18:09:34,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1626, Invalid=3776, Unknown=0, NotChecked=0, Total=5402 [2020-07-17 18:09:34,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-07-17 18:09:34,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2020-07-17 18:09:34,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-07-17 18:09:34,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2020-07-17 18:09:34,707 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 164 [2020-07-17 18:09:34,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:09:34,708 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2020-07-17 18:09:34,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-07-17 18:09:34,708 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2020-07-17 18:09:34,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-07-17 18:09:34,710 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:09:34,710 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:09:34,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-17 18:09:34,711 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:09:34,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:09:34,711 INFO L82 PathProgramCache]: Analyzing trace with hash -29122670, now seen corresponding path program 18 times [2020-07-17 18:09:34,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:09:34,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920938448] [2020-07-17 18:09:34,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:09:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:35,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:35,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:35,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1449 backedges. 36 proven. 801 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2020-07-17 18:09:35,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920938448] [2020-07-17 18:09:35,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:09:35,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-07-17 18:09:35,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62785079] [2020-07-17 18:09:35,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-07-17 18:09:35,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:09:35,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-07-17 18:09:35,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=1237, Unknown=0, NotChecked=0, Total=1640 [2020-07-17 18:09:35,485 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 41 states. [2020-07-17 18:09:36,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:09:36,812 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2020-07-17 18:09:36,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-07-17 18:09:36,813 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 173 [2020-07-17 18:09:36,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:09:36,814 INFO L225 Difference]: With dead ends: 189 [2020-07-17 18:09:36,814 INFO L226 Difference]: Without dead ends: 187 [2020-07-17 18:09:36,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1042 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1811, Invalid=4195, Unknown=0, NotChecked=0, Total=6006 [2020-07-17 18:09:36,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-07-17 18:09:36,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2020-07-17 18:09:36,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-07-17 18:09:36,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2020-07-17 18:09:36,827 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 173 [2020-07-17 18:09:36,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:09:36,828 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2020-07-17 18:09:36,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-07-17 18:09:36,828 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2020-07-17 18:09:36,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-07-17 18:09:36,830 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:09:36,830 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:09:36,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-07-17 18:09:36,831 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:09:36,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:09:36,831 INFO L82 PathProgramCache]: Analyzing trace with hash 251678126, now seen corresponding path program 19 times [2020-07-17 18:09:36,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:09:36,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820594106] [2020-07-17 18:09:36,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:09:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:37,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:37,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1615 backedges. 38 proven. 893 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-07-17 18:09:37,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820594106] [2020-07-17 18:09:37,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:09:37,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-07-17 18:09:37,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053962142] [2020-07-17 18:09:37,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-07-17 18:09:37,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:09:37,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-07-17 18:09:37,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=1362, Unknown=0, NotChecked=0, Total=1806 [2020-07-17 18:09:37,666 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 43 states. [2020-07-17 18:09:39,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:09:39,073 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2020-07-17 18:09:39,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-07-17 18:09:39,073 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 182 [2020-07-17 18:09:39,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:09:39,075 INFO L225 Difference]: With dead ends: 198 [2020-07-17 18:09:39,075 INFO L226 Difference]: Without dead ends: 196 [2020-07-17 18:09:39,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1157 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2006, Invalid=4636, Unknown=0, NotChecked=0, Total=6642 [2020-07-17 18:09:39,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-07-17 18:09:39,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2020-07-17 18:09:39,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-07-17 18:09:39,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2020-07-17 18:09:39,088 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 182 [2020-07-17 18:09:39,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:09:39,089 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2020-07-17 18:09:39,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-07-17 18:09:39,089 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2020-07-17 18:09:39,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-07-17 18:09:39,091 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:09:39,091 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:09:39,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-07-17 18:09:39,092 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:09:39,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:09:39,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1263550702, now seen corresponding path program 20 times [2020-07-17 18:09:39,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:09:39,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962583775] [2020-07-17 18:09:39,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:09:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:39,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1790 backedges. 40 proven. 990 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2020-07-17 18:09:39,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962583775] [2020-07-17 18:09:39,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:09:39,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-07-17 18:09:39,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242367468] [2020-07-17 18:09:40,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-07-17 18:09:40,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:09:40,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-07-17 18:09:40,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=487, Invalid=1493, Unknown=0, NotChecked=0, Total=1980 [2020-07-17 18:09:40,001 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 45 states. [2020-07-17 18:09:41,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:09:41,571 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2020-07-17 18:09:41,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-07-17 18:09:41,572 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 191 [2020-07-17 18:09:41,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:09:41,573 INFO L225 Difference]: With dead ends: 207 [2020-07-17 18:09:41,573 INFO L226 Difference]: Without dead ends: 205 [2020-07-17 18:09:41,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1278 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2211, Invalid=5099, Unknown=0, NotChecked=0, Total=7310 [2020-07-17 18:09:41,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-07-17 18:09:41,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2020-07-17 18:09:41,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-07-17 18:09:41,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2020-07-17 18:09:41,585 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 191 [2020-07-17 18:09:41,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:09:41,585 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2020-07-17 18:09:41,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-07-17 18:09:41,585 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2020-07-17 18:09:41,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-07-17 18:09:41,587 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:09:41,587 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:09:41,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-07-17 18:09:41,587 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:09:41,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:09:41,588 INFO L82 PathProgramCache]: Analyzing trace with hash -612393426, now seen corresponding path program 21 times [2020-07-17 18:09:41,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:09:41,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110631559] [2020-07-17 18:09:41,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:09:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:42,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:42,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1974 backedges. 42 proven. 1092 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-07-17 18:09:42,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110631559] [2020-07-17 18:09:42,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:09:42,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-07-17 18:09:42,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891782359] [2020-07-17 18:09:42,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-07-17 18:09:42,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:09:42,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-07-17 18:09:42,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=1630, Unknown=0, NotChecked=0, Total=2162 [2020-07-17 18:09:42,560 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 47 states. [2020-07-17 18:09:44,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:09:44,326 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2020-07-17 18:09:44,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-07-17 18:09:44,328 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 200 [2020-07-17 18:09:44,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:09:44,331 INFO L225 Difference]: With dead ends: 216 [2020-07-17 18:09:44,331 INFO L226 Difference]: Without dead ends: 214 [2020-07-17 18:09:44,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1405 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2426, Invalid=5584, Unknown=0, NotChecked=0, Total=8010 [2020-07-17 18:09:44,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-07-17 18:09:44,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 212. [2020-07-17 18:09:44,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-07-17 18:09:44,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2020-07-17 18:09:44,347 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 200 [2020-07-17 18:09:44,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:09:44,348 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2020-07-17 18:09:44,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-07-17 18:09:44,348 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2020-07-17 18:09:44,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-07-17 18:09:44,350 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:09:44,350 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:09:44,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-07-17 18:09:44,351 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:09:44,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:09:44,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1625096558, now seen corresponding path program 22 times [2020-07-17 18:09:44,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:09:44,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956267728] [2020-07-17 18:09:44,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:09:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:45,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2167 backedges. 44 proven. 1199 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2020-07-17 18:09:45,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956267728] [2020-07-17 18:09:45,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:09:45,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-07-17 18:09:45,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645531773] [2020-07-17 18:09:45,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-07-17 18:09:45,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:09:45,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-07-17 18:09:45,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=1773, Unknown=0, NotChecked=0, Total=2352 [2020-07-17 18:09:45,491 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 49 states. [2020-07-17 18:09:47,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:09:47,363 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2020-07-17 18:09:47,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-07-17 18:09:47,364 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 209 [2020-07-17 18:09:47,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:09:47,366 INFO L225 Difference]: With dead ends: 225 [2020-07-17 18:09:47,366 INFO L226 Difference]: Without dead ends: 223 [2020-07-17 18:09:47,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1538 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2651, Invalid=6091, Unknown=0, NotChecked=0, Total=8742 [2020-07-17 18:09:47,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-07-17 18:09:47,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2020-07-17 18:09:47,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-07-17 18:09:47,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2020-07-17 18:09:47,387 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 209 [2020-07-17 18:09:47,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:09:47,387 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2020-07-17 18:09:47,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-07-17 18:09:47,387 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2020-07-17 18:09:47,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-07-17 18:09:47,389 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:09:47,389 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:09:47,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-07-17 18:09:47,389 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:09:47,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:09:47,390 INFO L82 PathProgramCache]: Analyzing trace with hash 972803758, now seen corresponding path program 23 times [2020-07-17 18:09:47,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:09:47,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253380906] [2020-07-17 18:09:47,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:09:47,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:48,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2369 backedges. 46 proven. 1311 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-07-17 18:09:48,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253380906] [2020-07-17 18:09:48,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:09:48,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-07-17 18:09:48,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036772925] [2020-07-17 18:09:48,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-07-17 18:09:48,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:09:48,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-07-17 18:09:48,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=628, Invalid=1922, Unknown=0, NotChecked=0, Total=2550 [2020-07-17 18:09:48,598 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 51 states. [2020-07-17 18:09:50,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:09:50,611 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2020-07-17 18:09:50,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-07-17 18:09:50,611 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 218 [2020-07-17 18:09:50,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:09:50,614 INFO L225 Difference]: With dead ends: 234 [2020-07-17 18:09:50,614 INFO L226 Difference]: Without dead ends: 232 [2020-07-17 18:09:50,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1677 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2886, Invalid=6620, Unknown=0, NotChecked=0, Total=9506 [2020-07-17 18:09:50,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-07-17 18:09:50,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 230. [2020-07-17 18:09:50,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-07-17 18:09:50,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2020-07-17 18:09:50,626 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 218 [2020-07-17 18:09:50,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:09:50,626 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2020-07-17 18:09:50,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-07-17 18:09:50,626 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2020-07-17 18:09:50,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-07-17 18:09:50,628 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:09:50,628 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:09:50,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-07-17 18:09:50,629 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:09:50,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:09:50,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1240113646, now seen corresponding path program 24 times [2020-07-17 18:09:50,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:09:50,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607070976] [2020-07-17 18:09:50,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:09:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:51,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:51,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 48 proven. 1428 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2020-07-17 18:09:51,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607070976] [2020-07-17 18:09:51,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:09:51,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-07-17 18:09:51,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458198072] [2020-07-17 18:09:51,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-07-17 18:09:51,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:09:51,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-07-17 18:09:51,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=2077, Unknown=0, NotChecked=0, Total=2756 [2020-07-17 18:09:51,880 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 53 states. [2020-07-17 18:09:54,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:09:54,327 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2020-07-17 18:09:54,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-07-17 18:09:54,328 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 227 [2020-07-17 18:09:54,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:09:54,330 INFO L225 Difference]: With dead ends: 243 [2020-07-17 18:09:54,330 INFO L226 Difference]: Without dead ends: 241 [2020-07-17 18:09:54,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1822 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3131, Invalid=7171, Unknown=0, NotChecked=0, Total=10302 [2020-07-17 18:09:54,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-07-17 18:09:54,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 239. [2020-07-17 18:09:54,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-07-17 18:09:54,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2020-07-17 18:09:54,344 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 227 [2020-07-17 18:09:54,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:09:54,345 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2020-07-17 18:09:54,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-07-17 18:09:54,345 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2020-07-17 18:09:54,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-07-17 18:09:54,348 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:09:54,349 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:09:54,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-07-17 18:09:54,349 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:09:54,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:09:54,350 INFO L82 PathProgramCache]: Analyzing trace with hash 956096302, now seen corresponding path program 25 times [2020-07-17 18:09:54,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:09:54,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261270234] [2020-07-17 18:09:54,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:09:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:55,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:55,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:55,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:55,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:55,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2800 backedges. 50 proven. 1550 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-07-17 18:09:55,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261270234] [2020-07-17 18:09:55,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:09:55,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-07-17 18:09:55,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306711567] [2020-07-17 18:09:55,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-07-17 18:09:55,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:09:55,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-07-17 18:09:55,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=732, Invalid=2238, Unknown=0, NotChecked=0, Total=2970 [2020-07-17 18:09:55,837 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 55 states. [2020-07-17 18:09:58,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:09:58,316 INFO L93 Difference]: Finished difference Result 252 states and 252 transitions. [2020-07-17 18:09:58,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-07-17 18:09:58,318 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 236 [2020-07-17 18:09:58,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:09:58,320 INFO L225 Difference]: With dead ends: 252 [2020-07-17 18:09:58,320 INFO L226 Difference]: Without dead ends: 250 [2020-07-17 18:09:58,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1973 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3386, Invalid=7744, Unknown=0, NotChecked=0, Total=11130 [2020-07-17 18:09:58,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-07-17 18:09:58,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2020-07-17 18:09:58,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-07-17 18:09:58,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2020-07-17 18:09:58,333 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 236 [2020-07-17 18:09:58,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:09:58,334 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2020-07-17 18:09:58,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-07-17 18:09:58,335 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2020-07-17 18:09:58,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-07-17 18:09:58,336 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:09:58,336 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:09:58,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-07-17 18:09:58,336 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:09:58,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:09:58,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1006707310, now seen corresponding path program 26 times [2020-07-17 18:09:58,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:09:58,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977856968] [2020-07-17 18:09:58,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:09:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:59,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:09:59,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3029 backedges. 52 proven. 1677 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2020-07-17 18:09:59,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977856968] [2020-07-17 18:09:59,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:09:59,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-07-17 18:09:59,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118578931] [2020-07-17 18:09:59,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-07-17 18:09:59,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:09:59,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-07-17 18:09:59,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=2405, Unknown=0, NotChecked=0, Total=3192 [2020-07-17 18:09:59,863 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 57 states. [2020-07-17 18:10:02,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:10:02,829 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2020-07-17 18:10:02,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-07-17 18:10:02,829 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 245 [2020-07-17 18:10:02,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:10:02,831 INFO L225 Difference]: With dead ends: 261 [2020-07-17 18:10:02,832 INFO L226 Difference]: Without dead ends: 259 [2020-07-17 18:10:02,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2130 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3651, Invalid=8339, Unknown=0, NotChecked=0, Total=11990 [2020-07-17 18:10:02,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-07-17 18:10:02,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 257. [2020-07-17 18:10:02,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-07-17 18:10:02,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2020-07-17 18:10:02,844 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 245 [2020-07-17 18:10:02,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:10:02,845 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2020-07-17 18:10:02,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-07-17 18:10:02,845 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2020-07-17 18:10:02,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-07-17 18:10:02,846 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:10:02,847 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:10:02,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-07-17 18:10:02,847 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:10:02,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:10:02,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1426771886, now seen corresponding path program 27 times [2020-07-17 18:10:02,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:10:02,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046688732] [2020-07-17 18:10:02,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:10:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:04,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3267 backedges. 54 proven. 1809 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-07-17 18:10:04,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046688732] [2020-07-17 18:10:04,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:10:04,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-07-17 18:10:04,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501238775] [2020-07-17 18:10:04,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-07-17 18:10:04,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:10:04,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-07-17 18:10:04,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=844, Invalid=2578, Unknown=0, NotChecked=0, Total=3422 [2020-07-17 18:10:04,348 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand 59 states. [2020-07-17 18:10:07,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:10:07,404 INFO L93 Difference]: Finished difference Result 270 states and 270 transitions. [2020-07-17 18:10:07,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-07-17 18:10:07,404 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 254 [2020-07-17 18:10:07,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:10:07,406 INFO L225 Difference]: With dead ends: 270 [2020-07-17 18:10:07,406 INFO L226 Difference]: Without dead ends: 268 [2020-07-17 18:10:07,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2293 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3926, Invalid=8956, Unknown=0, NotChecked=0, Total=12882 [2020-07-17 18:10:07,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-07-17 18:10:07,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 266. [2020-07-17 18:10:07,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-07-17 18:10:07,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 266 transitions. [2020-07-17 18:10:07,420 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 266 transitions. Word has length 254 [2020-07-17 18:10:07,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:10:07,420 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 266 transitions. [2020-07-17 18:10:07,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-07-17 18:10:07,420 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 266 transitions. [2020-07-17 18:10:07,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-07-17 18:10:07,422 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:10:07,422 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:10:07,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-07-17 18:10:07,423 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:10:07,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:10:07,423 INFO L82 PathProgramCache]: Analyzing trace with hash -447251182, now seen corresponding path program 28 times [2020-07-17 18:10:07,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:10:07,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872484627] [2020-07-17 18:10:07,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:10:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:09,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3514 backedges. 56 proven. 1946 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2020-07-17 18:10:09,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872484627] [2020-07-17 18:10:09,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:10:09,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2020-07-17 18:10:09,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020918258] [2020-07-17 18:10:09,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-07-17 18:10:09,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:10:09,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-07-17 18:10:09,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=2757, Unknown=0, NotChecked=0, Total=3660 [2020-07-17 18:10:09,130 INFO L87 Difference]: Start difference. First operand 266 states and 266 transitions. Second operand 61 states. [2020-07-17 18:10:12,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:10:12,108 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2020-07-17 18:10:12,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-07-17 18:10:12,108 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 263 [2020-07-17 18:10:12,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:10:12,111 INFO L225 Difference]: With dead ends: 279 [2020-07-17 18:10:12,111 INFO L226 Difference]: Without dead ends: 277 [2020-07-17 18:10:12,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2462 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=4211, Invalid=9595, Unknown=0, NotChecked=0, Total=13806 [2020-07-17 18:10:12,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-07-17 18:10:12,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2020-07-17 18:10:12,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-07-17 18:10:12,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2020-07-17 18:10:12,127 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 263 [2020-07-17 18:10:12,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:10:12,127 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2020-07-17 18:10:12,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-07-17 18:10:12,128 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2020-07-17 18:10:12,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-07-17 18:10:12,129 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:10:12,129 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:10:12,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-07-17 18:10:12,130 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:10:12,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:10:12,130 INFO L82 PathProgramCache]: Analyzing trace with hash -122838994, now seen corresponding path program 29 times [2020-07-17 18:10:12,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:10:12,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384349232] [2020-07-17 18:10:12,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:10:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:13,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:14,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3770 backedges. 58 proven. 2088 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-07-17 18:10:14,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384349232] [2020-07-17 18:10:14,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:10:14,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2020-07-17 18:10:14,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3895973] [2020-07-17 18:10:14,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-07-17 18:10:14,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:10:14,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-07-17 18:10:14,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=964, Invalid=2942, Unknown=0, NotChecked=0, Total=3906 [2020-07-17 18:10:14,008 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 63 states. [2020-07-17 18:10:17,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:10:17,241 INFO L93 Difference]: Finished difference Result 288 states and 288 transitions. [2020-07-17 18:10:17,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2020-07-17 18:10:17,242 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 272 [2020-07-17 18:10:17,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:10:17,244 INFO L225 Difference]: With dead ends: 288 [2020-07-17 18:10:17,245 INFO L226 Difference]: Without dead ends: 286 [2020-07-17 18:10:17,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2637 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=4506, Invalid=10256, Unknown=0, NotChecked=0, Total=14762 [2020-07-17 18:10:17,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-07-17 18:10:17,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2020-07-17 18:10:17,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-07-17 18:10:17,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 284 transitions. [2020-07-17 18:10:17,257 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 284 transitions. Word has length 272 [2020-07-17 18:10:17,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:10:17,257 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 284 transitions. [2020-07-17 18:10:17,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-07-17 18:10:17,258 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 284 transitions. [2020-07-17 18:10:17,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-07-17 18:10:17,259 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:10:17,259 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:10:17,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-07-17 18:10:17,260 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:10:17,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:10:17,260 INFO L82 PathProgramCache]: Analyzing trace with hash 144129170, now seen corresponding path program 30 times [2020-07-17 18:10:17,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:10:17,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508791689] [2020-07-17 18:10:17,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:10:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:19,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4035 backedges. 60 proven. 2235 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2020-07-17 18:10:19,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508791689] [2020-07-17 18:10:19,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:10:19,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2020-07-17 18:10:19,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966207997] [2020-07-17 18:10:19,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-07-17 18:10:19,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:10:19,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-07-17 18:10:19,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1027, Invalid=3133, Unknown=0, NotChecked=0, Total=4160 [2020-07-17 18:10:19,255 INFO L87 Difference]: Start difference. First operand 284 states and 284 transitions. Second operand 65 states. [2020-07-17 18:10:22,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:10:22,904 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2020-07-17 18:10:22,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-07-17 18:10:22,905 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 281 [2020-07-17 18:10:22,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:10:22,907 INFO L225 Difference]: With dead ends: 297 [2020-07-17 18:10:22,907 INFO L226 Difference]: Without dead ends: 295 [2020-07-17 18:10:22,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2818 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=4811, Invalid=10939, Unknown=0, NotChecked=0, Total=15750 [2020-07-17 18:10:22,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-07-17 18:10:22,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 293. [2020-07-17 18:10:22,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-07-17 18:10:22,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 293 transitions. [2020-07-17 18:10:22,919 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 293 transitions. Word has length 281 [2020-07-17 18:10:22,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:10:22,920 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 293 transitions. [2020-07-17 18:10:22,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-07-17 18:10:22,920 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 293 transitions. [2020-07-17 18:10:22,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-07-17 18:10:22,922 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:10:22,922 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:10:22,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-07-17 18:10:22,922 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:10:22,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:10:22,923 INFO L82 PathProgramCache]: Analyzing trace with hash -59944786, now seen corresponding path program 31 times [2020-07-17 18:10:22,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:10:22,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898162448] [2020-07-17 18:10:22,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:10:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:25,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4309 backedges. 62 proven. 2387 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-07-17 18:10:25,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898162448] [2020-07-17 18:10:25,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:10:25,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2020-07-17 18:10:25,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711013290] [2020-07-17 18:10:25,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-07-17 18:10:25,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:10:25,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-07-17 18:10:25,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1092, Invalid=3330, Unknown=0, NotChecked=0, Total=4422 [2020-07-17 18:10:25,259 INFO L87 Difference]: Start difference. First operand 293 states and 293 transitions. Second operand 67 states. [2020-07-17 18:10:29,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:10:29,018 INFO L93 Difference]: Finished difference Result 306 states and 306 transitions. [2020-07-17 18:10:29,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2020-07-17 18:10:29,019 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 290 [2020-07-17 18:10:29,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:10:29,021 INFO L225 Difference]: With dead ends: 306 [2020-07-17 18:10:29,021 INFO L226 Difference]: Without dead ends: 304 [2020-07-17 18:10:29,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3005 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=5126, Invalid=11644, Unknown=0, NotChecked=0, Total=16770 [2020-07-17 18:10:29,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-07-17 18:10:29,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 302. [2020-07-17 18:10:29,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-07-17 18:10:29,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 302 transitions. [2020-07-17 18:10:29,034 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 302 transitions. Word has length 290 [2020-07-17 18:10:29,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:10:29,034 INFO L479 AbstractCegarLoop]: Abstraction has 302 states and 302 transitions. [2020-07-17 18:10:29,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-07-17 18:10:29,034 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 302 transitions. [2020-07-17 18:10:29,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-07-17 18:10:29,036 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:10:29,036 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:10:29,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-07-17 18:10:29,037 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:10:29,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:10:29,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1849039890, now seen corresponding path program 32 times [2020-07-17 18:10:29,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:10:29,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298047269] [2020-07-17 18:10:29,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:10:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:31,263 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 64 proven. 2544 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2020-07-17 18:10:31,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298047269] [2020-07-17 18:10:31,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:10:31,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2020-07-17 18:10:31,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521005557] [2020-07-17 18:10:31,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-07-17 18:10:31,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:10:31,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-07-17 18:10:31,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1159, Invalid=3533, Unknown=0, NotChecked=0, Total=4692 [2020-07-17 18:10:31,265 INFO L87 Difference]: Start difference. First operand 302 states and 302 transitions. Second operand 69 states. [2020-07-17 18:10:35,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:10:35,225 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2020-07-17 18:10:35,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2020-07-17 18:10:35,226 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 299 [2020-07-17 18:10:35,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:10:35,229 INFO L225 Difference]: With dead ends: 315 [2020-07-17 18:10:35,229 INFO L226 Difference]: Without dead ends: 313 [2020-07-17 18:10:35,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3198 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=5451, Invalid=12371, Unknown=0, NotChecked=0, Total=17822 [2020-07-17 18:10:35,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-07-17 18:10:35,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 311. [2020-07-17 18:10:35,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-07-17 18:10:35,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2020-07-17 18:10:35,242 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 299 [2020-07-17 18:10:35,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:10:35,243 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2020-07-17 18:10:35,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-07-17 18:10:35,243 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2020-07-17 18:10:35,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-07-17 18:10:35,245 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:10:35,245 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:10:35,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-07-17 18:10:35,246 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:10:35,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:10:35,246 INFO L82 PathProgramCache]: Analyzing trace with hash 651288878, now seen corresponding path program 33 times [2020-07-17 18:10:35,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:10:35,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443330841] [2020-07-17 18:10:35,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:10:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:37,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4884 backedges. 66 proven. 2706 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-07-17 18:10:37,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443330841] [2020-07-17 18:10:37,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:10:37,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2020-07-17 18:10:37,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311860454] [2020-07-17 18:10:37,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-07-17 18:10:37,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:10:37,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-07-17 18:10:37,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1228, Invalid=3742, Unknown=0, NotChecked=0, Total=4970 [2020-07-17 18:10:37,734 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 71 states. [2020-07-17 18:10:42,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:10:42,242 INFO L93 Difference]: Finished difference Result 324 states and 324 transitions. [2020-07-17 18:10:42,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2020-07-17 18:10:42,242 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 308 [2020-07-17 18:10:42,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:10:42,245 INFO L225 Difference]: With dead ends: 324 [2020-07-17 18:10:42,245 INFO L226 Difference]: Without dead ends: 322 [2020-07-17 18:10:42,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3397 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=5786, Invalid=13120, Unknown=0, NotChecked=0, Total=18906 [2020-07-17 18:10:42,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-07-17 18:10:42,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 320. [2020-07-17 18:10:42,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-07-17 18:10:42,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 320 transitions. [2020-07-17 18:10:42,258 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 320 transitions. Word has length 308 [2020-07-17 18:10:42,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:10:42,258 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 320 transitions. [2020-07-17 18:10:42,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-07-17 18:10:42,258 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 320 transitions. [2020-07-17 18:10:42,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-07-17 18:10:42,260 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:10:42,261 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:10:42,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-07-17 18:10:42,261 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:10:42,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:10:42,261 INFO L82 PathProgramCache]: Analyzing trace with hash 682367890, now seen corresponding path program 34 times [2020-07-17 18:10:42,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:10:42,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713713186] [2020-07-17 18:10:42,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:10:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:44,859 INFO L134 CoverageAnalysis]: Checked inductivity of 5185 backedges. 68 proven. 2873 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2020-07-17 18:10:44,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713713186] [2020-07-17 18:10:44,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:10:44,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2020-07-17 18:10:44,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591743123] [2020-07-17 18:10:44,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-07-17 18:10:44,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:10:44,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-07-17 18:10:44,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1299, Invalid=3957, Unknown=0, NotChecked=0, Total=5256 [2020-07-17 18:10:44,862 INFO L87 Difference]: Start difference. First operand 320 states and 320 transitions. Second operand 73 states. [2020-07-17 18:10:49,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:10:49,398 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2020-07-17 18:10:49,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2020-07-17 18:10:49,399 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 317 [2020-07-17 18:10:49,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:10:49,401 INFO L225 Difference]: With dead ends: 333 [2020-07-17 18:10:49,401 INFO L226 Difference]: Without dead ends: 331 [2020-07-17 18:10:49,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3602 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=6131, Invalid=13891, Unknown=0, NotChecked=0, Total=20022 [2020-07-17 18:10:49,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-07-17 18:10:49,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 329. [2020-07-17 18:10:49,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-07-17 18:10:49,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 329 transitions. [2020-07-17 18:10:49,414 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 329 transitions. Word has length 317 [2020-07-17 18:10:49,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:10:49,414 INFO L479 AbstractCegarLoop]: Abstraction has 329 states and 329 transitions. [2020-07-17 18:10:49,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-07-17 18:10:49,414 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 329 transitions. [2020-07-17 18:10:49,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-07-17 18:10:49,416 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:10:49,417 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:10:49,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-07-17 18:10:49,417 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:10:49,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:10:49,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1402777170, now seen corresponding path program 35 times [2020-07-17 18:10:49,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:10:49,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105589597] [2020-07-17 18:10:49,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:10:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:52,179 INFO L134 CoverageAnalysis]: Checked inductivity of 5495 backedges. 70 proven. 3045 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-07-17 18:10:52,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105589597] [2020-07-17 18:10:52,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:10:52,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2020-07-17 18:10:52,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184110495] [2020-07-17 18:10:52,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-07-17 18:10:52,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:10:52,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-07-17 18:10:52,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1372, Invalid=4178, Unknown=0, NotChecked=0, Total=5550 [2020-07-17 18:10:52,181 INFO L87 Difference]: Start difference. First operand 329 states and 329 transitions. Second operand 75 states. [2020-07-17 18:10:57,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:10:57,005 INFO L93 Difference]: Finished difference Result 342 states and 342 transitions. [2020-07-17 18:10:57,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2020-07-17 18:10:57,006 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 326 [2020-07-17 18:10:57,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:10:57,007 INFO L225 Difference]: With dead ends: 342 [2020-07-17 18:10:57,007 INFO L226 Difference]: Without dead ends: 340 [2020-07-17 18:10:57,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3813 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=6486, Invalid=14684, Unknown=0, NotChecked=0, Total=21170 [2020-07-17 18:10:57,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-07-17 18:10:57,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 338. [2020-07-17 18:10:57,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-07-17 18:10:57,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 338 transitions. [2020-07-17 18:10:57,021 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 338 transitions. Word has length 326 [2020-07-17 18:10:57,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:10:57,022 INFO L479 AbstractCegarLoop]: Abstraction has 338 states and 338 transitions. [2020-07-17 18:10:57,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-07-17 18:10:57,022 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 338 transitions. [2020-07-17 18:10:57,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-17 18:10:57,024 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:10:57,024 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:10:57,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-07-17 18:10:57,025 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:10:57,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:10:57,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1670300910, now seen corresponding path program 36 times [2020-07-17 18:10:57,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:10:57,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603495806] [2020-07-17 18:10:57,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:10:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:10:59,886 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 72 proven. 3222 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2020-07-17 18:10:59,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603495806] [2020-07-17 18:10:59,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:10:59,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2020-07-17 18:10:59,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578792679] [2020-07-17 18:10:59,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-07-17 18:10:59,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:10:59,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-07-17 18:10:59,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1447, Invalid=4405, Unknown=0, NotChecked=0, Total=5852 [2020-07-17 18:10:59,889 INFO L87 Difference]: Start difference. First operand 338 states and 338 transitions. Second operand 77 states. [2020-07-17 18:11:04,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:11:04,679 INFO L93 Difference]: Finished difference Result 351 states and 351 transitions. [2020-07-17 18:11:04,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2020-07-17 18:11:04,680 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 335 [2020-07-17 18:11:04,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:11:04,682 INFO L225 Difference]: With dead ends: 351 [2020-07-17 18:11:04,682 INFO L226 Difference]: Without dead ends: 349 [2020-07-17 18:11:04,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4030 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=6851, Invalid=15499, Unknown=0, NotChecked=0, Total=22350 [2020-07-17 18:11:04,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-07-17 18:11:04,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 347. [2020-07-17 18:11:04,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-07-17 18:11:04,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2020-07-17 18:11:04,697 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 335 [2020-07-17 18:11:04,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:11:04,697 INFO L479 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2020-07-17 18:11:04,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-07-17 18:11:04,698 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2020-07-17 18:11:04,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-07-17 18:11:04,700 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:11:04,700 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:11:04,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-07-17 18:11:04,701 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:11:04,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:11:04,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1347837394, now seen corresponding path program 37 times [2020-07-17 18:11:04,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:11:04,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099611303] [2020-07-17 18:11:04,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:11:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:07,855 INFO L134 CoverageAnalysis]: Checked inductivity of 6142 backedges. 74 proven. 3404 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-07-17 18:11:07,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099611303] [2020-07-17 18:11:07,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:11:07,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2020-07-17 18:11:07,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104492868] [2020-07-17 18:11:07,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-07-17 18:11:07,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:11:07,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-07-17 18:11:07,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1524, Invalid=4638, Unknown=0, NotChecked=0, Total=6162 [2020-07-17 18:11:07,858 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 79 states. [2020-07-17 18:11:12,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:11:12,866 INFO L93 Difference]: Finished difference Result 360 states and 360 transitions. [2020-07-17 18:11:12,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2020-07-17 18:11:12,867 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 344 [2020-07-17 18:11:12,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:11:12,870 INFO L225 Difference]: With dead ends: 360 [2020-07-17 18:11:12,870 INFO L226 Difference]: Without dead ends: 358 [2020-07-17 18:11:12,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4253 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=7226, Invalid=16336, Unknown=0, NotChecked=0, Total=23562 [2020-07-17 18:11:12,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-07-17 18:11:12,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 356. [2020-07-17 18:11:12,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-07-17 18:11:12,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 356 transitions. [2020-07-17 18:11:12,883 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 356 transitions. Word has length 344 [2020-07-17 18:11:12,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:11:12,884 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 356 transitions. [2020-07-17 18:11:12,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-07-17 18:11:12,884 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 356 transitions. [2020-07-17 18:11:12,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-07-17 18:11:12,886 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:11:12,887 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:11:12,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-07-17 18:11:12,887 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:11:12,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:11:12,888 INFO L82 PathProgramCache]: Analyzing trace with hash -165230, now seen corresponding path program 38 times [2020-07-17 18:11:12,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:11:12,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497019564] [2020-07-17 18:11:12,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:11:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:16,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6479 backedges. 76 proven. 3591 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2020-07-17 18:11:16,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497019564] [2020-07-17 18:11:16,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:11:16,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2020-07-17 18:11:16,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315314502] [2020-07-17 18:11:16,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-07-17 18:11:16,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:11:16,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-07-17 18:11:16,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1603, Invalid=4877, Unknown=0, NotChecked=0, Total=6480 [2020-07-17 18:11:16,250 INFO L87 Difference]: Start difference. First operand 356 states and 356 transitions. Second operand 81 states. [2020-07-17 18:11:21,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:11:21,760 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2020-07-17 18:11:21,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2020-07-17 18:11:21,761 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 353 [2020-07-17 18:11:21,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:11:21,763 INFO L225 Difference]: With dead ends: 369 [2020-07-17 18:11:21,763 INFO L226 Difference]: Without dead ends: 367 [2020-07-17 18:11:21,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4482 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=7611, Invalid=17195, Unknown=0, NotChecked=0, Total=24806 [2020-07-17 18:11:21,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-07-17 18:11:21,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 365. [2020-07-17 18:11:21,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-07-17 18:11:21,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 365 transitions. [2020-07-17 18:11:21,776 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 365 transitions. Word has length 353 [2020-07-17 18:11:21,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:11:21,776 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 365 transitions. [2020-07-17 18:11:21,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-07-17 18:11:21,777 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 365 transitions. [2020-07-17 18:11:21,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-07-17 18:11:21,779 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:11:21,779 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:11:21,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-07-17 18:11:21,789 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:11:21,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:11:21,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1054027090, now seen corresponding path program 39 times [2020-07-17 18:11:21,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:11:21,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439512316] [2020-07-17 18:11:21,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:11:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:25,206 INFO L134 CoverageAnalysis]: Checked inductivity of 6825 backedges. 78 proven. 3783 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-07-17 18:11:25,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439512316] [2020-07-17 18:11:25,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:11:25,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2020-07-17 18:11:25,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310821289] [2020-07-17 18:11:25,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-07-17 18:11:25,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:11:25,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-07-17 18:11:25,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1684, Invalid=5122, Unknown=0, NotChecked=0, Total=6806 [2020-07-17 18:11:25,207 INFO L87 Difference]: Start difference. First operand 365 states and 365 transitions. Second operand 83 states. [2020-07-17 18:11:31,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:11:31,357 INFO L93 Difference]: Finished difference Result 378 states and 378 transitions. [2020-07-17 18:11:31,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2020-07-17 18:11:31,358 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 362 [2020-07-17 18:11:31,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:11:31,360 INFO L225 Difference]: With dead ends: 378 [2020-07-17 18:11:31,360 INFO L226 Difference]: Without dead ends: 376 [2020-07-17 18:11:31,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4717 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=8006, Invalid=18076, Unknown=0, NotChecked=0, Total=26082 [2020-07-17 18:11:31,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-07-17 18:11:31,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 374. [2020-07-17 18:11:31,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-07-17 18:11:31,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 374 transitions. [2020-07-17 18:11:31,373 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 374 transitions. Word has length 362 [2020-07-17 18:11:31,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:11:31,374 INFO L479 AbstractCegarLoop]: Abstraction has 374 states and 374 transitions. [2020-07-17 18:11:31,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 83 states. [2020-07-17 18:11:31,374 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 374 transitions. [2020-07-17 18:11:31,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-07-17 18:11:31,376 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:11:31,377 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:11:31,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-07-17 18:11:31,377 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:11:31,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:11:31,377 INFO L82 PathProgramCache]: Analyzing trace with hash -607593966, now seen corresponding path program 40 times [2020-07-17 18:11:31,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:11:31,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828799703] [2020-07-17 18:11:31,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:11:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:35,170 INFO L134 CoverageAnalysis]: Checked inductivity of 7180 backedges. 80 proven. 3980 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2020-07-17 18:11:35,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828799703] [2020-07-17 18:11:35,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:11:35,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2020-07-17 18:11:35,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552546549] [2020-07-17 18:11:35,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-07-17 18:11:35,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:11:35,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-07-17 18:11:35,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1767, Invalid=5373, Unknown=0, NotChecked=0, Total=7140 [2020-07-17 18:11:35,172 INFO L87 Difference]: Start difference. First operand 374 states and 374 transitions. Second operand 85 states. [2020-07-17 18:11:41,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:11:41,774 INFO L93 Difference]: Finished difference Result 387 states and 387 transitions. [2020-07-17 18:11:41,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2020-07-17 18:11:41,775 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 371 [2020-07-17 18:11:41,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:11:41,777 INFO L225 Difference]: With dead ends: 387 [2020-07-17 18:11:41,777 INFO L226 Difference]: Without dead ends: 385 [2020-07-17 18:11:41,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4958 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=8411, Invalid=18979, Unknown=0, NotChecked=0, Total=27390 [2020-07-17 18:11:41,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-07-17 18:11:41,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 383. [2020-07-17 18:11:41,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2020-07-17 18:11:41,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2020-07-17 18:11:41,790 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 371 [2020-07-17 18:11:41,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:11:41,791 INFO L479 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2020-07-17 18:11:41,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 85 states. [2020-07-17 18:11:41,791 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2020-07-17 18:11:41,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-07-17 18:11:41,793 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:11:41,793 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:11:41,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-07-17 18:11:41,794 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:11:41,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:11:41,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1601495854, now seen corresponding path program 41 times [2020-07-17 18:11:41,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:11:41,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822702190] [2020-07-17 18:11:41,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:11:41,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:45,806 INFO L134 CoverageAnalysis]: Checked inductivity of 7544 backedges. 82 proven. 4182 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-07-17 18:11:45,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822702190] [2020-07-17 18:11:45,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:11:45,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2020-07-17 18:11:45,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000288851] [2020-07-17 18:11:45,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-07-17 18:11:45,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:11:45,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-07-17 18:11:45,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1852, Invalid=5630, Unknown=0, NotChecked=0, Total=7482 [2020-07-17 18:11:45,809 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand 87 states. [2020-07-17 18:11:52,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:11:52,133 INFO L93 Difference]: Finished difference Result 396 states and 396 transitions. [2020-07-17 18:11:52,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2020-07-17 18:11:52,134 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 380 [2020-07-17 18:11:52,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:11:52,137 INFO L225 Difference]: With dead ends: 396 [2020-07-17 18:11:52,137 INFO L226 Difference]: Without dead ends: 394 [2020-07-17 18:11:52,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5205 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=8826, Invalid=19904, Unknown=0, NotChecked=0, Total=28730 [2020-07-17 18:11:52,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-07-17 18:11:52,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 392. [2020-07-17 18:11:52,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-07-17 18:11:52,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 392 transitions. [2020-07-17 18:11:52,150 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 392 transitions. Word has length 380 [2020-07-17 18:11:52,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:11:52,150 INFO L479 AbstractCegarLoop]: Abstraction has 392 states and 392 transitions. [2020-07-17 18:11:52,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-07-17 18:11:52,150 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 392 transitions. [2020-07-17 18:11:52,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-07-17 18:11:52,153 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:11:52,153 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:11:52,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-07-17 18:11:52,153 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:11:52,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:11:52,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1974773358, now seen corresponding path program 42 times [2020-07-17 18:11:52,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:11:52,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608102734] [2020-07-17 18:11:52,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:11:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:11:56,352 INFO L134 CoverageAnalysis]: Checked inductivity of 7917 backedges. 84 proven. 4389 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2020-07-17 18:11:56,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608102734] [2020-07-17 18:11:56,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:11:56,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2020-07-17 18:11:56,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030502645] [2020-07-17 18:11:56,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2020-07-17 18:11:56,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:11:56,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2020-07-17 18:11:56,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1939, Invalid=5893, Unknown=0, NotChecked=0, Total=7832 [2020-07-17 18:11:56,355 INFO L87 Difference]: Start difference. First operand 392 states and 392 transitions. Second operand 89 states. [2020-07-17 18:12:03,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:12:03,213 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2020-07-17 18:12:03,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2020-07-17 18:12:03,214 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 389 [2020-07-17 18:12:03,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:12:03,216 INFO L225 Difference]: With dead ends: 405 [2020-07-17 18:12:03,216 INFO L226 Difference]: Without dead ends: 403 [2020-07-17 18:12:03,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5458 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=9251, Invalid=20851, Unknown=0, NotChecked=0, Total=30102 [2020-07-17 18:12:03,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-07-17 18:12:03,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 401. [2020-07-17 18:12:03,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-07-17 18:12:03,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 401 transitions. [2020-07-17 18:12:03,230 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 401 transitions. Word has length 389 [2020-07-17 18:12:03,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:12:03,231 INFO L479 AbstractCegarLoop]: Abstraction has 401 states and 401 transitions. [2020-07-17 18:12:03,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 89 states. [2020-07-17 18:12:03,231 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 401 transitions. [2020-07-17 18:12:03,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-07-17 18:12:03,234 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:12:03,234 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:12:03,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-07-17 18:12:03,235 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:12:03,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:12:03,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1997132718, now seen corresponding path program 43 times [2020-07-17 18:12:03,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:12:03,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249236258] [2020-07-17 18:12:03,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:12:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:07,531 INFO L134 CoverageAnalysis]: Checked inductivity of 8299 backedges. 86 proven. 4601 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-07-17 18:12:07,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249236258] [2020-07-17 18:12:07,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:12:07,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2020-07-17 18:12:07,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44809688] [2020-07-17 18:12:07,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2020-07-17 18:12:07,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:12:07,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2020-07-17 18:12:07,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2028, Invalid=6162, Unknown=0, NotChecked=0, Total=8190 [2020-07-17 18:12:07,534 INFO L87 Difference]: Start difference. First operand 401 states and 401 transitions. Second operand 91 states. [2020-07-17 18:12:14,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:12:14,811 INFO L93 Difference]: Finished difference Result 414 states and 414 transitions. [2020-07-17 18:12:14,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2020-07-17 18:12:14,812 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 398 [2020-07-17 18:12:14,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:12:14,815 INFO L225 Difference]: With dead ends: 414 [2020-07-17 18:12:14,815 INFO L226 Difference]: Without dead ends: 412 [2020-07-17 18:12:14,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5717 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=9686, Invalid=21820, Unknown=0, NotChecked=0, Total=31506 [2020-07-17 18:12:14,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-07-17 18:12:14,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 410. [2020-07-17 18:12:14,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2020-07-17 18:12:14,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 410 transitions. [2020-07-17 18:12:14,827 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 410 transitions. Word has length 398 [2020-07-17 18:12:14,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:12:14,828 INFO L479 AbstractCegarLoop]: Abstraction has 410 states and 410 transitions. [2020-07-17 18:12:14,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 91 states. [2020-07-17 18:12:14,828 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 410 transitions. [2020-07-17 18:12:14,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-07-17 18:12:14,830 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:12:14,831 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:12:14,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-07-17 18:12:14,831 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:12:14,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:12:14,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1208157934, now seen corresponding path program 44 times [2020-07-17 18:12:14,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:12:14,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018121647] [2020-07-17 18:12:14,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:12:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:19,328 INFO L134 CoverageAnalysis]: Checked inductivity of 8690 backedges. 88 proven. 4818 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2020-07-17 18:12:19,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018121647] [2020-07-17 18:12:19,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:12:19,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2020-07-17 18:12:19,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193689038] [2020-07-17 18:12:19,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2020-07-17 18:12:19,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:12:19,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2020-07-17 18:12:19,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2119, Invalid=6437, Unknown=0, NotChecked=0, Total=8556 [2020-07-17 18:12:19,331 INFO L87 Difference]: Start difference. First operand 410 states and 410 transitions. Second operand 93 states. [2020-07-17 18:12:26,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:12:26,672 INFO L93 Difference]: Finished difference Result 423 states and 423 transitions. [2020-07-17 18:12:26,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2020-07-17 18:12:26,673 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 407 [2020-07-17 18:12:26,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:12:26,675 INFO L225 Difference]: With dead ends: 423 [2020-07-17 18:12:26,676 INFO L226 Difference]: Without dead ends: 421 [2020-07-17 18:12:26,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5982 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=10131, Invalid=22811, Unknown=0, NotChecked=0, Total=32942 [2020-07-17 18:12:26,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-07-17 18:12:26,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 419. [2020-07-17 18:12:26,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-07-17 18:12:26,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 419 transitions. [2020-07-17 18:12:26,688 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 419 transitions. Word has length 407 [2020-07-17 18:12:26,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:12:26,688 INFO L479 AbstractCegarLoop]: Abstraction has 419 states and 419 transitions. [2020-07-17 18:12:26,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 93 states. [2020-07-17 18:12:26,688 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 419 transitions. [2020-07-17 18:12:26,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-07-17 18:12:26,691 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:12:26,691 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:12:26,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-07-17 18:12:26,692 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:12:26,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:12:26,692 INFO L82 PathProgramCache]: Analyzing trace with hash -495737810, now seen corresponding path program 45 times [2020-07-17 18:12:26,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:12:26,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663134554] [2020-07-17 18:12:26,693 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:12:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:31,525 INFO L134 CoverageAnalysis]: Checked inductivity of 9090 backedges. 90 proven. 5040 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-07-17 18:12:31,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663134554] [2020-07-17 18:12:31,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:12:31,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2020-07-17 18:12:31,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480172450] [2020-07-17 18:12:31,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2020-07-17 18:12:31,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:12:31,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2020-07-17 18:12:31,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2212, Invalid=6718, Unknown=0, NotChecked=0, Total=8930 [2020-07-17 18:12:31,527 INFO L87 Difference]: Start difference. First operand 419 states and 419 transitions. Second operand 95 states. [2020-07-17 18:12:39,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:12:39,923 INFO L93 Difference]: Finished difference Result 432 states and 432 transitions. [2020-07-17 18:12:39,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2020-07-17 18:12:39,924 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 416 [2020-07-17 18:12:39,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:12:39,926 INFO L225 Difference]: With dead ends: 432 [2020-07-17 18:12:39,926 INFO L226 Difference]: Without dead ends: 430 [2020-07-17 18:12:39,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6253 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=10586, Invalid=23824, Unknown=0, NotChecked=0, Total=34410 [2020-07-17 18:12:39,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-07-17 18:12:39,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 428. [2020-07-17 18:12:39,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-07-17 18:12:39,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 428 transitions. [2020-07-17 18:12:39,941 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 428 transitions. Word has length 416 [2020-07-17 18:12:39,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:12:39,941 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 428 transitions. [2020-07-17 18:12:39,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 95 states. [2020-07-17 18:12:39,941 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 428 transitions. [2020-07-17 18:12:39,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-07-17 18:12:39,944 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:12:39,944 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:12:39,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-07-17 18:12:39,945 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:12:39,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:12:39,945 INFO L82 PathProgramCache]: Analyzing trace with hash -480921454, now seen corresponding path program 46 times [2020-07-17 18:12:39,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:12:39,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251301717] [2020-07-17 18:12:39,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:12:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:12:45,251 INFO L134 CoverageAnalysis]: Checked inductivity of 9499 backedges. 92 proven. 5267 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2020-07-17 18:12:45,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251301717] [2020-07-17 18:12:45,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:12:45,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2020-07-17 18:12:45,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85347913] [2020-07-17 18:12:45,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2020-07-17 18:12:45,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:12:45,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2020-07-17 18:12:45,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2307, Invalid=7005, Unknown=0, NotChecked=0, Total=9312 [2020-07-17 18:12:45,253 INFO L87 Difference]: Start difference. First operand 428 states and 428 transitions. Second operand 97 states. [2020-07-17 18:12:54,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:12:54,348 INFO L93 Difference]: Finished difference Result 441 states and 441 transitions. [2020-07-17 18:12:54,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2020-07-17 18:12:54,349 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 425 [2020-07-17 18:12:54,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:12:54,352 INFO L225 Difference]: With dead ends: 441 [2020-07-17 18:12:54,352 INFO L226 Difference]: Without dead ends: 439 [2020-07-17 18:12:54,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6530 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=11051, Invalid=24859, Unknown=0, NotChecked=0, Total=35910 [2020-07-17 18:12:54,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-07-17 18:12:54,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 437. [2020-07-17 18:12:54,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-07-17 18:12:54,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 437 transitions. [2020-07-17 18:12:54,364 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 437 transitions. Word has length 425 [2020-07-17 18:12:54,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:12:54,364 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 437 transitions. [2020-07-17 18:12:54,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 97 states. [2020-07-17 18:12:54,364 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 437 transitions. [2020-07-17 18:12:54,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-07-17 18:12:54,367 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:12:54,367 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:12:54,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-07-17 18:12:54,367 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:12:54,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:12:54,368 INFO L82 PathProgramCache]: Analyzing trace with hash -365275986, now seen corresponding path program 47 times [2020-07-17 18:12:54,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:12:54,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223504999] [2020-07-17 18:12:54,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:12:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:00,387 INFO L134 CoverageAnalysis]: Checked inductivity of 9917 backedges. 94 proven. 5499 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2020-07-17 18:13:00,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223504999] [2020-07-17 18:13:00,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:13:00,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2020-07-17 18:13:00,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529250944] [2020-07-17 18:13:00,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2020-07-17 18:13:00,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:13:00,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2020-07-17 18:13:00,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2404, Invalid=7298, Unknown=0, NotChecked=0, Total=9702 [2020-07-17 18:13:00,389 INFO L87 Difference]: Start difference. First operand 437 states and 437 transitions. Second operand 99 states. [2020-07-17 18:13:11,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:13:11,772 INFO L93 Difference]: Finished difference Result 450 states and 450 transitions. [2020-07-17 18:13:11,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2020-07-17 18:13:11,775 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 434 [2020-07-17 18:13:11,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:13:11,778 INFO L225 Difference]: With dead ends: 450 [2020-07-17 18:13:11,778 INFO L226 Difference]: Without dead ends: 448 [2020-07-17 18:13:11,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6813 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=11526, Invalid=25916, Unknown=0, NotChecked=0, Total=37442 [2020-07-17 18:13:11,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-07-17 18:13:11,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 446. [2020-07-17 18:13:11,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-07-17 18:13:11,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 446 transitions. [2020-07-17 18:13:11,804 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 446 transitions. Word has length 434 [2020-07-17 18:13:11,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:13:11,805 INFO L479 AbstractCegarLoop]: Abstraction has 446 states and 446 transitions. [2020-07-17 18:13:11,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 99 states. [2020-07-17 18:13:11,805 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 446 transitions. [2020-07-17 18:13:11,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2020-07-17 18:13:11,810 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:13:11,811 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:13:11,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-07-17 18:13:11,811 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:13:11,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:13:11,812 INFO L82 PathProgramCache]: Analyzing trace with hash -590505966, now seen corresponding path program 48 times [2020-07-17 18:13:11,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:13:11,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860500125] [2020-07-17 18:13:11,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:13:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:19,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:19,135 INFO L134 CoverageAnalysis]: Checked inductivity of 10344 backedges. 96 proven. 5736 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2020-07-17 18:13:19,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860500125] [2020-07-17 18:13:19,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:13:19,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2020-07-17 18:13:19,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493776014] [2020-07-17 18:13:19,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2020-07-17 18:13:19,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:13:19,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2020-07-17 18:13:19,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2503, Invalid=7597, Unknown=0, NotChecked=0, Total=10100 [2020-07-17 18:13:19,137 INFO L87 Difference]: Start difference. First operand 446 states and 446 transitions. Second operand 101 states. [2020-07-17 18:13:30,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:13:30,742 INFO L93 Difference]: Finished difference Result 459 states and 459 transitions. [2020-07-17 18:13:30,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2020-07-17 18:13:30,744 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 443 [2020-07-17 18:13:30,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:13:30,747 INFO L225 Difference]: With dead ends: 459 [2020-07-17 18:13:30,747 INFO L226 Difference]: Without dead ends: 457 [2020-07-17 18:13:30,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7102 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=12011, Invalid=26995, Unknown=0, NotChecked=0, Total=39006 [2020-07-17 18:13:30,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-07-17 18:13:30,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 455. [2020-07-17 18:13:30,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-07-17 18:13:30,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 455 transitions. [2020-07-17 18:13:30,758 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 455 transitions. Word has length 443 [2020-07-17 18:13:30,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:13:30,758 INFO L479 AbstractCegarLoop]: Abstraction has 455 states and 455 transitions. [2020-07-17 18:13:30,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 101 states. [2020-07-17 18:13:30,758 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 455 transitions. [2020-07-17 18:13:30,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-07-17 18:13:30,760 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:13:30,761 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:13:30,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-07-17 18:13:30,761 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:13:30,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:13:30,761 INFO L82 PathProgramCache]: Analyzing trace with hash -991566546, now seen corresponding path program 49 times [2020-07-17 18:13:30,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:13:30,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458089117] [2020-07-17 18:13:30,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:13:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:37,720 INFO L134 CoverageAnalysis]: Checked inductivity of 10780 backedges. 98 proven. 5978 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2020-07-17 18:13:37,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458089117] [2020-07-17 18:13:37,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:13:37,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2020-07-17 18:13:37,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374401170] [2020-07-17 18:13:37,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2020-07-17 18:13:37,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:13:37,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2020-07-17 18:13:37,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2604, Invalid=7902, Unknown=0, NotChecked=0, Total=10506 [2020-07-17 18:13:37,723 INFO L87 Difference]: Start difference. First operand 455 states and 455 transitions. Second operand 103 states. [2020-07-17 18:13:49,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:13:49,965 INFO L93 Difference]: Finished difference Result 468 states and 468 transitions. [2020-07-17 18:13:49,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2020-07-17 18:13:49,966 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 452 [2020-07-17 18:13:49,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:13:49,969 INFO L225 Difference]: With dead ends: 468 [2020-07-17 18:13:49,969 INFO L226 Difference]: Without dead ends: 466 [2020-07-17 18:13:49,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7397 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=12506, Invalid=28096, Unknown=0, NotChecked=0, Total=40602 [2020-07-17 18:13:49,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-07-17 18:13:49,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 464. [2020-07-17 18:13:49,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-07-17 18:13:49,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 464 transitions. [2020-07-17 18:13:49,983 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 464 transitions. Word has length 452 [2020-07-17 18:13:49,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:13:49,984 INFO L479 AbstractCegarLoop]: Abstraction has 464 states and 464 transitions. [2020-07-17 18:13:49,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 103 states. [2020-07-17 18:13:49,984 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 464 transitions. [2020-07-17 18:13:49,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-07-17 18:13:49,987 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:13:49,987 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 50, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:13:49,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-07-17 18:13:49,988 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:13:49,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:13:49,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1188861842, now seen corresponding path program 50 times [2020-07-17 18:13:49,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:13:49,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989410057] [2020-07-17 18:13:49,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:13:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:13:57,374 INFO L134 CoverageAnalysis]: Checked inductivity of 11225 backedges. 100 proven. 6225 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2020-07-17 18:13:57,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989410057] [2020-07-17 18:13:57,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:13:57,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2020-07-17 18:13:57,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142397182] [2020-07-17 18:13:57,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2020-07-17 18:13:57,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:13:57,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2020-07-17 18:13:57,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2707, Invalid=8213, Unknown=0, NotChecked=0, Total=10920 [2020-07-17 18:13:57,376 INFO L87 Difference]: Start difference. First operand 464 states and 464 transitions. Second operand 105 states. [2020-07-17 18:14:11,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:14:11,132 INFO L93 Difference]: Finished difference Result 477 states and 477 transitions. [2020-07-17 18:14:11,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2020-07-17 18:14:11,133 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 461 [2020-07-17 18:14:11,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:14:11,137 INFO L225 Difference]: With dead ends: 477 [2020-07-17 18:14:11,137 INFO L226 Difference]: Without dead ends: 475 [2020-07-17 18:14:11,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7698 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=13011, Invalid=29219, Unknown=0, NotChecked=0, Total=42230 [2020-07-17 18:14:11,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-07-17 18:14:11,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 473. [2020-07-17 18:14:11,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-07-17 18:14:11,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 473 transitions. [2020-07-17 18:14:11,151 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 473 transitions. Word has length 461 [2020-07-17 18:14:11,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:14:11,151 INFO L479 AbstractCegarLoop]: Abstraction has 473 states and 473 transitions. [2020-07-17 18:14:11,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 105 states. [2020-07-17 18:14:11,151 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 473 transitions. [2020-07-17 18:14:11,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-07-17 18:14:11,155 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:14:11,155 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 52, 51, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:14:11,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-07-17 18:14:11,155 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:14:11,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:14:11,156 INFO L82 PathProgramCache]: Analyzing trace with hash 385766830, now seen corresponding path program 51 times [2020-07-17 18:14:11,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:14:11,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327081376] [2020-07-17 18:14:11,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:14:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:18,900 INFO L134 CoverageAnalysis]: Checked inductivity of 11679 backedges. 102 proven. 6477 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2020-07-17 18:14:18,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327081376] [2020-07-17 18:14:18,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:14:18,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2020-07-17 18:14:18,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504757709] [2020-07-17 18:14:18,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2020-07-17 18:14:18,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:14:18,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2020-07-17 18:14:18,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2812, Invalid=8530, Unknown=0, NotChecked=0, Total=11342 [2020-07-17 18:14:18,903 INFO L87 Difference]: Start difference. First operand 473 states and 473 transitions. Second operand 107 states. [2020-07-17 18:14:32,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:14:32,383 INFO L93 Difference]: Finished difference Result 486 states and 486 transitions. [2020-07-17 18:14:32,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2020-07-17 18:14:32,384 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 470 [2020-07-17 18:14:32,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:14:32,387 INFO L225 Difference]: With dead ends: 486 [2020-07-17 18:14:32,387 INFO L226 Difference]: Without dead ends: 484 [2020-07-17 18:14:32,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8005 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=13526, Invalid=30364, Unknown=0, NotChecked=0, Total=43890 [2020-07-17 18:14:32,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-07-17 18:14:32,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 482. [2020-07-17 18:14:32,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2020-07-17 18:14:32,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 482 transitions. [2020-07-17 18:14:32,399 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 482 transitions. Word has length 470 [2020-07-17 18:14:32,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:14:32,400 INFO L479 AbstractCegarLoop]: Abstraction has 482 states and 482 transitions. [2020-07-17 18:14:32,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 107 states. [2020-07-17 18:14:32,400 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 482 transitions. [2020-07-17 18:14:32,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2020-07-17 18:14:32,403 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:14:32,403 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:14:32,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-07-17 18:14:32,404 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:14:32,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:14:32,405 INFO L82 PathProgramCache]: Analyzing trace with hash 368752402, now seen corresponding path program 52 times [2020-07-17 18:14:32,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:14:32,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280802826] [2020-07-17 18:14:32,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:14:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:14:41,127 INFO L134 CoverageAnalysis]: Checked inductivity of 12142 backedges. 104 proven. 6734 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2020-07-17 18:14:41,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280802826] [2020-07-17 18:14:41,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:14:41,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2020-07-17 18:14:41,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961038669] [2020-07-17 18:14:41,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2020-07-17 18:14:41,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:14:41,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2020-07-17 18:14:41,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2919, Invalid=8853, Unknown=0, NotChecked=0, Total=11772 [2020-07-17 18:14:41,130 INFO L87 Difference]: Start difference. First operand 482 states and 482 transitions. Second operand 109 states. [2020-07-17 18:14:57,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:14:57,561 INFO L93 Difference]: Finished difference Result 495 states and 495 transitions. [2020-07-17 18:14:57,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2020-07-17 18:14:57,563 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 479 [2020-07-17 18:14:57,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:14:57,566 INFO L225 Difference]: With dead ends: 495 [2020-07-17 18:14:57,566 INFO L226 Difference]: Without dead ends: 493 [2020-07-17 18:14:57,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8318 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=14051, Invalid=31531, Unknown=0, NotChecked=0, Total=45582 [2020-07-17 18:14:57,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-07-17 18:14:57,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 491. [2020-07-17 18:14:57,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-07-17 18:14:57,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 491 transitions. [2020-07-17 18:14:57,598 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 491 transitions. Word has length 479 [2020-07-17 18:14:57,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:14:57,599 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 491 transitions. [2020-07-17 18:14:57,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 109 states. [2020-07-17 18:14:57,599 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 491 transitions. [2020-07-17 18:14:57,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-07-17 18:14:57,601 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:14:57,602 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 53, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:14:57,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-07-17 18:14:57,602 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:14:57,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:14:57,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1930143278, now seen corresponding path program 53 times [2020-07-17 18:14:57,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:14:57,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475922798] [2020-07-17 18:14:57,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:14:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:07,369 INFO L134 CoverageAnalysis]: Checked inductivity of 12614 backedges. 106 proven. 6996 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2020-07-17 18:15:07,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475922798] [2020-07-17 18:15:07,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:15:07,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2020-07-17 18:15:07,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319460745] [2020-07-17 18:15:07,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2020-07-17 18:15:07,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:15:07,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2020-07-17 18:15:07,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3028, Invalid=9182, Unknown=0, NotChecked=0, Total=12210 [2020-07-17 18:15:07,372 INFO L87 Difference]: Start difference. First operand 491 states and 491 transitions. Second operand 111 states. [2020-07-17 18:15:25,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:15:25,412 INFO L93 Difference]: Finished difference Result 504 states and 504 transitions. [2020-07-17 18:15:25,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2020-07-17 18:15:25,414 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 488 [2020-07-17 18:15:25,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:15:25,417 INFO L225 Difference]: With dead ends: 504 [2020-07-17 18:15:25,417 INFO L226 Difference]: Without dead ends: 502 [2020-07-17 18:15:25,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8637 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=14586, Invalid=32720, Unknown=0, NotChecked=0, Total=47306 [2020-07-17 18:15:25,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-07-17 18:15:25,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 500. [2020-07-17 18:15:25,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2020-07-17 18:15:25,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 500 transitions. [2020-07-17 18:15:25,433 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 500 transitions. Word has length 488 [2020-07-17 18:15:25,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:15:25,433 INFO L479 AbstractCegarLoop]: Abstraction has 500 states and 500 transitions. [2020-07-17 18:15:25,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 111 states. [2020-07-17 18:15:25,434 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 500 transitions. [2020-07-17 18:15:25,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2020-07-17 18:15:25,437 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:15:25,437 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 55, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:15:25,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-07-17 18:15:25,438 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:15:25,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:15:25,438 INFO L82 PathProgramCache]: Analyzing trace with hash 278918802, now seen corresponding path program 54 times [2020-07-17 18:15:25,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:15:25,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984004890] [2020-07-17 18:15:25,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:15:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:15:36,020 INFO L134 CoverageAnalysis]: Checked inductivity of 13095 backedges. 108 proven. 7263 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2020-07-17 18:15:36,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984004890] [2020-07-17 18:15:36,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:15:36,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2020-07-17 18:15:36,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610367755] [2020-07-17 18:15:36,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2020-07-17 18:15:36,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:15:36,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2020-07-17 18:15:36,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3139, Invalid=9517, Unknown=0, NotChecked=0, Total=12656 [2020-07-17 18:15:36,023 INFO L87 Difference]: Start difference. First operand 500 states and 500 transitions. Second operand 113 states. [2020-07-17 18:15:58,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:15:58,051 INFO L93 Difference]: Finished difference Result 513 states and 513 transitions. [2020-07-17 18:15:58,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2020-07-17 18:15:58,054 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 497 [2020-07-17 18:15:58,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:15:58,056 INFO L225 Difference]: With dead ends: 513 [2020-07-17 18:15:58,056 INFO L226 Difference]: Without dead ends: 511 [2020-07-17 18:15:58,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8962 ImplicationChecksByTransitivity, 27.8s TimeCoverageRelationStatistics Valid=15131, Invalid=33931, Unknown=0, NotChecked=0, Total=49062 [2020-07-17 18:15:58,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2020-07-17 18:15:58,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 509. [2020-07-17 18:15:58,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-07-17 18:15:58,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 509 transitions. [2020-07-17 18:15:58,068 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 509 transitions. Word has length 497 [2020-07-17 18:15:58,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:15:58,068 INFO L479 AbstractCegarLoop]: Abstraction has 509 states and 509 transitions. [2020-07-17 18:15:58,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 113 states. [2020-07-17 18:15:58,068 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 509 transitions. [2020-07-17 18:15:58,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2020-07-17 18:15:58,071 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:15:58,071 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 56, 55, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:15:58,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-07-17 18:15:58,071 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:15:58,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:15:58,072 INFO L82 PathProgramCache]: Analyzing trace with hash -644491602, now seen corresponding path program 55 times [2020-07-17 18:15:58,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:15:58,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428393378] [2020-07-17 18:15:58,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:15:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:10,701 INFO L134 CoverageAnalysis]: Checked inductivity of 13585 backedges. 110 proven. 7535 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2020-07-17 18:16:10,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428393378] [2020-07-17 18:16:10,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:16:10,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2020-07-17 18:16:10,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831354724] [2020-07-17 18:16:10,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2020-07-17 18:16:10,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:16:10,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2020-07-17 18:16:10,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3252, Invalid=9858, Unknown=0, NotChecked=0, Total=13110 [2020-07-17 18:16:10,704 INFO L87 Difference]: Start difference. First operand 509 states and 509 transitions. Second operand 115 states. [2020-07-17 18:16:33,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:16:33,741 INFO L93 Difference]: Finished difference Result 522 states and 522 transitions. [2020-07-17 18:16:33,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2020-07-17 18:16:33,744 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 506 [2020-07-17 18:16:33,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:16:33,747 INFO L225 Difference]: With dead ends: 522 [2020-07-17 18:16:33,747 INFO L226 Difference]: Without dead ends: 520 [2020-07-17 18:16:33,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9293 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=15686, Invalid=35164, Unknown=0, NotChecked=0, Total=50850 [2020-07-17 18:16:33,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2020-07-17 18:16:33,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 518. [2020-07-17 18:16:33,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-07-17 18:16:33,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 518 transitions. [2020-07-17 18:16:33,762 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 518 transitions. Word has length 506 [2020-07-17 18:16:33,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:16:33,763 INFO L479 AbstractCegarLoop]: Abstraction has 518 states and 518 transitions. [2020-07-17 18:16:33,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 115 states. [2020-07-17 18:16:33,763 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 518 transitions. [2020-07-17 18:16:33,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2020-07-17 18:16:33,766 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:16:33,766 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 56, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:16:33,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-07-17 18:16:33,766 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:16:33,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:16:33,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1329878546, now seen corresponding path program 56 times [2020-07-17 18:16:33,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:16:33,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581335193] [2020-07-17 18:16:33,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:16:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:16:47,576 INFO L134 CoverageAnalysis]: Checked inductivity of 14084 backedges. 112 proven. 7812 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2020-07-17 18:16:47,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581335193] [2020-07-17 18:16:47,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:16:47,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2020-07-17 18:16:47,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354258920] [2020-07-17 18:16:47,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2020-07-17 18:16:47,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:16:47,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2020-07-17 18:16:47,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3367, Invalid=10205, Unknown=0, NotChecked=0, Total=13572 [2020-07-17 18:16:47,578 INFO L87 Difference]: Start difference. First operand 518 states and 518 transitions. Second operand 117 states. [2020-07-17 18:17:09,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:17:09,724 INFO L93 Difference]: Finished difference Result 531 states and 531 transitions. [2020-07-17 18:17:09,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2020-07-17 18:17:09,726 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 515 [2020-07-17 18:17:09,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:17:09,729 INFO L225 Difference]: With dead ends: 531 [2020-07-17 18:17:09,729 INFO L226 Difference]: Without dead ends: 529 [2020-07-17 18:17:09,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9630 ImplicationChecksByTransitivity, 32.5s TimeCoverageRelationStatistics Valid=16251, Invalid=36419, Unknown=0, NotChecked=0, Total=52670 [2020-07-17 18:17:09,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-07-17 18:17:09,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 527. [2020-07-17 18:17:09,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-07-17 18:17:09,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 527 transitions. [2020-07-17 18:17:09,741 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 527 transitions. Word has length 515 [2020-07-17 18:17:09,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:17:09,742 INFO L479 AbstractCegarLoop]: Abstraction has 527 states and 527 transitions. [2020-07-17 18:17:09,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 117 states. [2020-07-17 18:17:09,742 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 527 transitions. [2020-07-17 18:17:09,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2020-07-17 18:17:09,745 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:17:09,745 INFO L422 BasicCegarLoop]: trace histogram [58, 58, 58, 57, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:17:09,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-07-17 18:17:09,745 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:17:09,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:17:09,746 INFO L82 PathProgramCache]: Analyzing trace with hash 958719790, now seen corresponding path program 57 times [2020-07-17 18:17:09,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:17:09,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463531960] [2020-07-17 18:17:09,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:17:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:17:24,677 INFO L134 CoverageAnalysis]: Checked inductivity of 14592 backedges. 114 proven. 8094 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2020-07-17 18:17:24,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463531960] [2020-07-17 18:17:24,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:17:24,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2020-07-17 18:17:24,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144157] [2020-07-17 18:17:24,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2020-07-17 18:17:24,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:17:24,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2020-07-17 18:17:24,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3484, Invalid=10558, Unknown=0, NotChecked=0, Total=14042 [2020-07-17 18:17:24,679 INFO L87 Difference]: Start difference. First operand 527 states and 527 transitions. Second operand 119 states. [2020-07-17 18:17:50,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:17:50,576 INFO L93 Difference]: Finished difference Result 540 states and 540 transitions. [2020-07-17 18:17:50,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2020-07-17 18:17:50,579 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 524 [2020-07-17 18:17:50,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:17:50,581 INFO L225 Difference]: With dead ends: 540 [2020-07-17 18:17:50,581 INFO L226 Difference]: Without dead ends: 538 [2020-07-17 18:17:50,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9973 ImplicationChecksByTransitivity, 35.3s TimeCoverageRelationStatistics Valid=16826, Invalid=37696, Unknown=0, NotChecked=0, Total=54522 [2020-07-17 18:17:50,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2020-07-17 18:17:50,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 536. [2020-07-17 18:17:50,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-07-17 18:17:50,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 536 transitions. [2020-07-17 18:17:50,594 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 536 transitions. Word has length 524 [2020-07-17 18:17:50,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:17:50,595 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 536 transitions. [2020-07-17 18:17:50,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 119 states. [2020-07-17 18:17:50,595 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 536 transitions. [2020-07-17 18:17:50,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2020-07-17 18:17:50,598 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:17:50,598 INFO L422 BasicCegarLoop]: trace histogram [59, 59, 59, 58, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:17:50,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-07-17 18:17:50,599 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:17:50,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:17:50,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1134570094, now seen corresponding path program 58 times [2020-07-17 18:17:50,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:17:50,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119993886] [2020-07-17 18:17:50,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:17:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:06,991 INFO L134 CoverageAnalysis]: Checked inductivity of 15109 backedges. 116 proven. 8381 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2020-07-17 18:18:06,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119993886] [2020-07-17 18:18:06,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:18:06,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2020-07-17 18:18:06,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368105750] [2020-07-17 18:18:06,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 121 states [2020-07-17 18:18:06,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:18:06,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2020-07-17 18:18:06,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3603, Invalid=10917, Unknown=0, NotChecked=0, Total=14520 [2020-07-17 18:18:06,995 INFO L87 Difference]: Start difference. First operand 536 states and 536 transitions. Second operand 121 states. [2020-07-17 18:18:35,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:18:35,453 INFO L93 Difference]: Finished difference Result 549 states and 549 transitions. [2020-07-17 18:18:35,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2020-07-17 18:18:35,457 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 533 [2020-07-17 18:18:35,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:18:35,460 INFO L225 Difference]: With dead ends: 549 [2020-07-17 18:18:35,460 INFO L226 Difference]: Without dead ends: 547 [2020-07-17 18:18:35,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10322 ImplicationChecksByTransitivity, 39.5s TimeCoverageRelationStatistics Valid=17411, Invalid=38995, Unknown=0, NotChecked=0, Total=56406 [2020-07-17 18:18:35,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2020-07-17 18:18:35,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 545. [2020-07-17 18:18:35,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-07-17 18:18:35,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 545 transitions. [2020-07-17 18:18:35,477 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 545 transitions. Word has length 533 [2020-07-17 18:18:35,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:18:35,477 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 545 transitions. [2020-07-17 18:18:35,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 121 states. [2020-07-17 18:18:35,477 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 545 transitions. [2020-07-17 18:18:35,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2020-07-17 18:18:35,480 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:18:35,480 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 59, 59, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:18:35,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-07-17 18:18:35,481 INFO L427 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:18:35,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:18:35,481 INFO L82 PathProgramCache]: Analyzing trace with hash -297740370, now seen corresponding path program 59 times [2020-07-17 18:18:35,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:18:35,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135485917] [2020-07-17 18:18:35,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:18:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:18:53,364 INFO L134 CoverageAnalysis]: Checked inductivity of 15635 backedges. 118 proven. 8673 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2020-07-17 18:18:53,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135485917] [2020-07-17 18:18:53,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:18:53,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2020-07-17 18:18:53,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208360980] [2020-07-17 18:18:53,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 123 states [2020-07-17 18:18:53,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:18:53,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2020-07-17 18:18:53,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3724, Invalid=11282, Unknown=0, NotChecked=0, Total=15006 [2020-07-17 18:18:53,367 INFO L87 Difference]: Start difference. First operand 545 states and 545 transitions. Second operand 123 states. [2020-07-17 18:19:24,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:19:24,277 INFO L93 Difference]: Finished difference Result 558 states and 558 transitions. [2020-07-17 18:19:24,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2020-07-17 18:19:24,281 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 542 [2020-07-17 18:19:24,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:19:24,284 INFO L225 Difference]: With dead ends: 558 [2020-07-17 18:19:24,284 INFO L226 Difference]: Without dead ends: 556 [2020-07-17 18:19:24,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10677 ImplicationChecksByTransitivity, 43.8s TimeCoverageRelationStatistics Valid=18006, Invalid=40316, Unknown=0, NotChecked=0, Total=58322 [2020-07-17 18:19:24,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2020-07-17 18:19:24,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 554. [2020-07-17 18:19:24,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2020-07-17 18:19:24,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 554 transitions. [2020-07-17 18:19:24,297 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 554 transitions. Word has length 542 [2020-07-17 18:19:24,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:19:24,297 INFO L479 AbstractCegarLoop]: Abstraction has 554 states and 554 transitions. [2020-07-17 18:19:24,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 123 states. [2020-07-17 18:19:24,297 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 554 transitions. [2020-07-17 18:19:24,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2020-07-17 18:19:24,300 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:19:24,300 INFO L422 BasicCegarLoop]: trace histogram [61, 61, 61, 60, 60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:19:24,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-07-17 18:19:24,301 INFO L427 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:19:24,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:19:24,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1804962542, now seen corresponding path program 60 times [2020-07-17 18:19:24,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:19:24,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255873378] [2020-07-17 18:19:24,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:19:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:19:44,215 INFO L134 CoverageAnalysis]: Checked inductivity of 16170 backedges. 120 proven. 8970 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2020-07-17 18:19:44,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255873378] [2020-07-17 18:19:44,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:19:44,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2020-07-17 18:19:44,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333575104] [2020-07-17 18:19:44,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 125 states [2020-07-17 18:19:44,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:19:44,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2020-07-17 18:19:44,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3847, Invalid=11653, Unknown=0, NotChecked=0, Total=15500 [2020-07-17 18:19:44,220 INFO L87 Difference]: Start difference. First operand 554 states and 554 transitions. Second operand 125 states. [2020-07-17 18:20:18,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:20:18,505 INFO L93 Difference]: Finished difference Result 567 states and 567 transitions. [2020-07-17 18:20:18,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2020-07-17 18:20:18,510 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 551 [2020-07-17 18:20:18,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:20:18,513 INFO L225 Difference]: With dead ends: 567 [2020-07-17 18:20:18,513 INFO L226 Difference]: Without dead ends: 565 [2020-07-17 18:20:18,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11038 ImplicationChecksByTransitivity, 48.5s TimeCoverageRelationStatistics Valid=18611, Invalid=41659, Unknown=0, NotChecked=0, Total=60270 [2020-07-17 18:20:18,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-07-17 18:20:18,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 563. [2020-07-17 18:20:18,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-07-17 18:20:18,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 563 transitions. [2020-07-17 18:20:18,530 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 563 transitions. Word has length 551 [2020-07-17 18:20:18,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:20:18,530 INFO L479 AbstractCegarLoop]: Abstraction has 563 states and 563 transitions. [2020-07-17 18:20:18,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 125 states. [2020-07-17 18:20:18,530 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 563 transitions. [2020-07-17 18:20:18,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2020-07-17 18:20:18,533 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:20:18,534 INFO L422 BasicCegarLoop]: trace histogram [62, 62, 62, 61, 61, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:20:18,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-07-17 18:20:18,534 INFO L427 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:20:18,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:20:18,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1131522094, now seen corresponding path program 61 times [2020-07-17 18:20:18,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:20:18,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215875322] [2020-07-17 18:20:18,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:20:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:20:40,548 INFO L134 CoverageAnalysis]: Checked inductivity of 16714 backedges. 122 proven. 9272 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2020-07-17 18:20:40,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215875322] [2020-07-17 18:20:40,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:20:40,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2020-07-17 18:20:40,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936752445] [2020-07-17 18:20:40,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 127 states [2020-07-17 18:20:40,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:20:40,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2020-07-17 18:20:40,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3972, Invalid=12030, Unknown=0, NotChecked=0, Total=16002 [2020-07-17 18:20:40,551 INFO L87 Difference]: Start difference. First operand 563 states and 563 transitions. Second operand 127 states. [2020-07-17 18:21:20,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:21:20,281 INFO L93 Difference]: Finished difference Result 576 states and 576 transitions. [2020-07-17 18:21:20,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2020-07-17 18:21:20,286 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 560 [2020-07-17 18:21:20,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:21:20,290 INFO L225 Difference]: With dead ends: 576 [2020-07-17 18:21:20,290 INFO L226 Difference]: Without dead ends: 574 [2020-07-17 18:21:20,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11405 ImplicationChecksByTransitivity, 54.3s TimeCoverageRelationStatistics Valid=19226, Invalid=43024, Unknown=0, NotChecked=0, Total=62250 [2020-07-17 18:21:20,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-07-17 18:21:20,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 572. [2020-07-17 18:21:20,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2020-07-17 18:21:20,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 572 transitions. [2020-07-17 18:21:20,310 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 572 transitions. Word has length 560 [2020-07-17 18:21:20,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:21:20,310 INFO L479 AbstractCegarLoop]: Abstraction has 572 states and 572 transitions. [2020-07-17 18:21:20,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 127 states. [2020-07-17 18:21:20,310 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 572 transitions. [2020-07-17 18:21:20,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2020-07-17 18:21:20,315 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:21:20,315 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 63, 62, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:21:20,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-07-17 18:21:20,316 INFO L427 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:21:20,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:21:20,316 INFO L82 PathProgramCache]: Analyzing trace with hash -438553454, now seen corresponding path program 62 times [2020-07-17 18:21:20,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:21:20,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884551024] [2020-07-17 18:21:20,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:21:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:21:45,223 INFO L134 CoverageAnalysis]: Checked inductivity of 17267 backedges. 124 proven. 9579 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2020-07-17 18:21:45,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884551024] [2020-07-17 18:21:45,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:21:45,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2020-07-17 18:21:45,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716940609] [2020-07-17 18:21:45,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 129 states [2020-07-17 18:21:45,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:21:45,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2020-07-17 18:21:45,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4099, Invalid=12413, Unknown=0, NotChecked=0, Total=16512 [2020-07-17 18:21:45,226 INFO L87 Difference]: Start difference. First operand 572 states and 572 transitions. Second operand 129 states.