/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/locks/test_locks_11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 17:24:25,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 17:24:25,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 17:24:25,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-17 17:24:25,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 17:24:25,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 17:24:25,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 17:24:25,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 17:24:25,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 17:24:25,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 17:24:25,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 17:24:25,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 17:24:25,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 17:24:25,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 17:24:25,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 17:24:25,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 17:24:25,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 17:24:25,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 17:24:25,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 17:24:25,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 17:24:25,759 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 17:24:25,777 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 17:24:25,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 17:24:25,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 17:24:25,781 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 17:24:25,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 17:24:25,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 17:24:25,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 17:24:25,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 17:24:25,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 17:24:25,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 17:24:25,782 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 17:24:25,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 17:24:25,783 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 17:24:25,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 17:24:25,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 17:24:25,785 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 17:24:25,785 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 17:24:25,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 17:24:25,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:24:25,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 17:24:25,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 17:24:25,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 17:24:25,786 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 17:24:26,107 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 17:24:26,128 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 17:24:26,132 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 17:24:26,133 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 17:24:26,133 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 17:24:26,134 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_11.c [2020-07-17 17:24:26,198 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbd148004/83c65843e3cd4843b76a0ceb51bfa487/FLAG5fc51d0af [2020-07-17 17:24:26,662 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 17:24:26,663 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_11.c [2020-07-17 17:24:26,670 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbd148004/83c65843e3cd4843b76a0ceb51bfa487/FLAG5fc51d0af [2020-07-17 17:24:27,040 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbd148004/83c65843e3cd4843b76a0ceb51bfa487 [2020-07-17 17:24:27,051 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 17:24:27,055 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 17:24:27,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 17:24:27,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 17:24:27,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 17:24:27,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:24:27" (1/1) ... [2020-07-17 17:24:27,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73dd4775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:24:27, skipping insertion in model container [2020-07-17 17:24:27,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:24:27" (1/1) ... [2020-07-17 17:24:27,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 17:24:27,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 17:24:27,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:24:27,294 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 17:24:27,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:24:27,338 INFO L208 MainTranslator]: Completed translation [2020-07-17 17:24:27,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:24:27 WrapperNode [2020-07-17 17:24:27,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 17:24:27,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 17:24:27,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 17:24:27,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 17:24:27,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:24:27" (1/1) ... [2020-07-17 17:24:27,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:24:27" (1/1) ... [2020-07-17 17:24:27,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:24:27" (1/1) ... [2020-07-17 17:24:27,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:24:27" (1/1) ... [2020-07-17 17:24:27,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:24:27" (1/1) ... [2020-07-17 17:24:27,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:24:27" (1/1) ... [2020-07-17 17:24:27,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:24:27" (1/1) ... [2020-07-17 17:24:27,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 17:24:27,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 17:24:27,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 17:24:27,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 17:24:27,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:24:27" (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 17:24:27,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 17:24:27,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 17:24:27,545 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 17:24:27,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 17:24:27,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 17:24:27,545 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 17:24:27,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 17:24:27,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 17:24:27,974 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 17:24:27,974 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 17:24:27,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:24:27 BoogieIcfgContainer [2020-07-17 17:24:27,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 17:24:27,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 17:24:27,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 17:24:27,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 17:24:27,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 05:24:27" (1/3) ... [2020-07-17 17:24:27,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a2c646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:24:27, skipping insertion in model container [2020-07-17 17:24:27,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:24:27" (2/3) ... [2020-07-17 17:24:27,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a2c646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:24:27, skipping insertion in model container [2020-07-17 17:24:27,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:24:27" (3/3) ... [2020-07-17 17:24:27,990 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_11.c [2020-07-17 17:24:28,003 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 17:24:28,012 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 17:24:28,026 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 17:24:28,051 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 17:24:28,051 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 17:24:28,051 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 17:24:28,051 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 17:24:28,051 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 17:24:28,052 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 17:24:28,052 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 17:24:28,052 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 17:24:28,072 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2020-07-17 17:24:28,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-17 17:24:28,086 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:24:28,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:24:28,088 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:24:28,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:24:28,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1546178992, now seen corresponding path program 1 times [2020-07-17 17:24:28,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:24:28,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467925305] [2020-07-17 17:24:28,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:24:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:28,377 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 17:24:28,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467925305] [2020-07-17 17:24:28,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:24:28,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 17:24:28,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876484902] [2020-07-17 17:24:28,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 17:24:28,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:24:28,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 17:24:28,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:28,407 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 3 states. [2020-07-17 17:24:28,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:24:28,535 INFO L93 Difference]: Finished difference Result 279 states and 384 transitions. [2020-07-17 17:24:28,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 17:24:28,539 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-07-17 17:24:28,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:24:28,556 INFO L225 Difference]: With dead ends: 279 [2020-07-17 17:24:28,557 INFO L226 Difference]: Without dead ends: 192 [2020-07-17 17:24:28,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:28,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-07-17 17:24:28,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 190. [2020-07-17 17:24:28,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-07-17 17:24:28,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 252 transitions. [2020-07-17 17:24:28,632 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 252 transitions. Word has length 79 [2020-07-17 17:24:28,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:24:28,633 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 252 transitions. [2020-07-17 17:24:28,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 17:24:28,634 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 252 transitions. [2020-07-17 17:24:28,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-07-17 17:24:28,637 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:24:28,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:24:28,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 17:24:28,640 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:24:28,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:24:28,641 INFO L82 PathProgramCache]: Analyzing trace with hash 687152074, now seen corresponding path program 1 times [2020-07-17 17:24:28,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:24:28,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502492907] [2020-07-17 17:24:28,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:24:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:28,747 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 17:24:28,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502492907] [2020-07-17 17:24:28,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:24:28,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 17:24:28,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16274250] [2020-07-17 17:24:28,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 17:24:28,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:24:28,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 17:24:28,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:28,753 INFO L87 Difference]: Start difference. First operand 190 states and 252 transitions. Second operand 3 states. [2020-07-17 17:24:28,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:24:28,830 INFO L93 Difference]: Finished difference Result 466 states and 650 transitions. [2020-07-17 17:24:28,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 17:24:28,831 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-07-17 17:24:28,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:24:28,835 INFO L225 Difference]: With dead ends: 466 [2020-07-17 17:24:28,835 INFO L226 Difference]: Without dead ends: 325 [2020-07-17 17:24:28,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:28,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-07-17 17:24:28,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2020-07-17 17:24:28,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-07-17 17:24:28,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 442 transitions. [2020-07-17 17:24:28,905 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 442 transitions. Word has length 80 [2020-07-17 17:24:28,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:24:28,906 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 442 transitions. [2020-07-17 17:24:28,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 17:24:28,906 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 442 transitions. [2020-07-17 17:24:28,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-07-17 17:24:28,910 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:24:28,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:24:28,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 17:24:28,911 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:24:28,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:24:28,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1261830773, now seen corresponding path program 1 times [2020-07-17 17:24:28,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:24:28,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885938085] [2020-07-17 17:24:28,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:24:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:29,025 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 17:24:29,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885938085] [2020-07-17 17:24:29,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:24:29,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 17:24:29,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380475229] [2020-07-17 17:24:29,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 17:24:29,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:24:29,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 17:24:29,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:29,028 INFO L87 Difference]: Start difference. First operand 323 states and 442 transitions. Second operand 3 states. [2020-07-17 17:24:29,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:24:29,078 INFO L93 Difference]: Finished difference Result 397 states and 552 transitions. [2020-07-17 17:24:29,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 17:24:29,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-07-17 17:24:29,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:24:29,083 INFO L225 Difference]: With dead ends: 397 [2020-07-17 17:24:29,083 INFO L226 Difference]: Without dead ends: 395 [2020-07-17 17:24:29,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:29,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-07-17 17:24:29,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 323. [2020-07-17 17:24:29,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-07-17 17:24:29,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 440 transitions. [2020-07-17 17:24:29,126 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 440 transitions. Word has length 80 [2020-07-17 17:24:29,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:24:29,127 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 440 transitions. [2020-07-17 17:24:29,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 17:24:29,127 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 440 transitions. [2020-07-17 17:24:29,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-07-17 17:24:29,129 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:24:29,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:24:29,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 17:24:29,130 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:24:29,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:24:29,131 INFO L82 PathProgramCache]: Analyzing trace with hash 397182858, now seen corresponding path program 1 times [2020-07-17 17:24:29,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:24:29,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916609084] [2020-07-17 17:24:29,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:24:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:29,194 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 17:24:29,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916609084] [2020-07-17 17:24:29,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:24:29,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 17:24:29,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743353413] [2020-07-17 17:24:29,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 17:24:29,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:24:29,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 17:24:29,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:29,198 INFO L87 Difference]: Start difference. First operand 323 states and 440 transitions. Second operand 3 states. [2020-07-17 17:24:29,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:24:29,247 INFO L93 Difference]: Finished difference Result 395 states and 546 transitions. [2020-07-17 17:24:29,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 17:24:29,248 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-07-17 17:24:29,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:24:29,256 INFO L225 Difference]: With dead ends: 395 [2020-07-17 17:24:29,256 INFO L226 Difference]: Without dead ends: 393 [2020-07-17 17:24:29,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:29,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-07-17 17:24:29,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 323. [2020-07-17 17:24:29,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-07-17 17:24:29,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 438 transitions. [2020-07-17 17:24:29,314 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 438 transitions. Word has length 81 [2020-07-17 17:24:29,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:24:29,316 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 438 transitions. [2020-07-17 17:24:29,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 17:24:29,316 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 438 transitions. [2020-07-17 17:24:29,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-07-17 17:24:29,326 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:24:29,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:24:29,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 17:24:29,327 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:24:29,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:24:29,327 INFO L82 PathProgramCache]: Analyzing trace with hash -172878236, now seen corresponding path program 1 times [2020-07-17 17:24:29,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:24:29,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735941491] [2020-07-17 17:24:29,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:24:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:29,392 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 17:24:29,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735941491] [2020-07-17 17:24:29,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:24:29,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 17:24:29,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902439851] [2020-07-17 17:24:29,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 17:24:29,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:24:29,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 17:24:29,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:29,395 INFO L87 Difference]: Start difference. First operand 323 states and 438 transitions. Second operand 3 states. [2020-07-17 17:24:29,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:24:29,461 INFO L93 Difference]: Finished difference Result 859 states and 1200 transitions. [2020-07-17 17:24:29,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 17:24:29,462 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-07-17 17:24:29,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:24:29,466 INFO L225 Difference]: With dead ends: 859 [2020-07-17 17:24:29,466 INFO L226 Difference]: Without dead ends: 585 [2020-07-17 17:24:29,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:29,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2020-07-17 17:24:29,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 583. [2020-07-17 17:24:29,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2020-07-17 17:24:29,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 802 transitions. [2020-07-17 17:24:29,513 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 802 transitions. Word has length 81 [2020-07-17 17:24:29,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:24:29,514 INFO L479 AbstractCegarLoop]: Abstraction has 583 states and 802 transitions. [2020-07-17 17:24:29,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 17:24:29,514 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 802 transitions. [2020-07-17 17:24:29,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-07-17 17:24:29,515 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:24:29,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:24:29,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 17:24:29,516 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:24:29,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:24:29,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1064013698, now seen corresponding path program 1 times [2020-07-17 17:24:29,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:24:29,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906230970] [2020-07-17 17:24:29,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:24:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:29,595 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 17:24:29,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906230970] [2020-07-17 17:24:29,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:24:29,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 17:24:29,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961683196] [2020-07-17 17:24:29,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 17:24:29,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:24:29,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 17:24:29,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:29,599 INFO L87 Difference]: Start difference. First operand 583 states and 802 transitions. Second operand 3 states. [2020-07-17 17:24:29,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:24:29,734 INFO L93 Difference]: Finished difference Result 1627 states and 2276 transitions. [2020-07-17 17:24:29,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 17:24:29,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-07-17 17:24:29,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:24:29,741 INFO L225 Difference]: With dead ends: 1627 [2020-07-17 17:24:29,742 INFO L226 Difference]: Without dead ends: 1093 [2020-07-17 17:24:29,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:29,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2020-07-17 17:24:29,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 1091. [2020-07-17 17:24:29,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2020-07-17 17:24:29,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1506 transitions. [2020-07-17 17:24:29,830 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1506 transitions. Word has length 82 [2020-07-17 17:24:29,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:24:29,831 INFO L479 AbstractCegarLoop]: Abstraction has 1091 states and 1506 transitions. [2020-07-17 17:24:29,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 17:24:29,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1506 transitions. [2020-07-17 17:24:29,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-07-17 17:24:29,833 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:24:29,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:24:29,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 17:24:29,835 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:24:29,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:24:29,839 INFO L82 PathProgramCache]: Analyzing trace with hash -637098359, now seen corresponding path program 1 times [2020-07-17 17:24:29,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:24:29,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036066520] [2020-07-17 17:24:29,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:24:29,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:29,931 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 17:24:29,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036066520] [2020-07-17 17:24:29,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:24:29,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 17:24:29,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038460949] [2020-07-17 17:24:29,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 17:24:29,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:24:29,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 17:24:29,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:29,936 INFO L87 Difference]: Start difference. First operand 1091 states and 1506 transitions. Second operand 3 states. [2020-07-17 17:24:30,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:24:30,031 INFO L93 Difference]: Finished difference Result 1343 states and 1876 transitions. [2020-07-17 17:24:30,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 17:24:30,032 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-07-17 17:24:30,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:24:30,039 INFO L225 Difference]: With dead ends: 1343 [2020-07-17 17:24:30,040 INFO L226 Difference]: Without dead ends: 1341 [2020-07-17 17:24:30,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:30,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2020-07-17 17:24:30,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1091. [2020-07-17 17:24:30,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2020-07-17 17:24:30,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1498 transitions. [2020-07-17 17:24:30,120 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1498 transitions. Word has length 82 [2020-07-17 17:24:30,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:24:30,120 INFO L479 AbstractCegarLoop]: Abstraction has 1091 states and 1498 transitions. [2020-07-17 17:24:30,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 17:24:30,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1498 transitions. [2020-07-17 17:24:30,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-17 17:24:30,123 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:24:30,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:24:30,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 17:24:30,124 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:24:30,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:24:30,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1659922654, now seen corresponding path program 1 times [2020-07-17 17:24:30,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:24:30,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650791182] [2020-07-17 17:24:30,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:24:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:30,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:30,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:24:30,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650791182] [2020-07-17 17:24:30,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:24:30,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 17:24:30,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723319002] [2020-07-17 17:24:30,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 17:24:30,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:24:30,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 17:24:30,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:30,186 INFO L87 Difference]: Start difference. First operand 1091 states and 1498 transitions. Second operand 3 states. [2020-07-17 17:24:30,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:24:30,294 INFO L93 Difference]: Finished difference Result 1335 states and 1852 transitions. [2020-07-17 17:24:30,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 17:24:30,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-07-17 17:24:30,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:24:30,302 INFO L225 Difference]: With dead ends: 1335 [2020-07-17 17:24:30,302 INFO L226 Difference]: Without dead ends: 1333 [2020-07-17 17:24:30,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:30,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2020-07-17 17:24:30,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1091. [2020-07-17 17:24:30,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2020-07-17 17:24:30,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1490 transitions. [2020-07-17 17:24:30,388 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1490 transitions. Word has length 83 [2020-07-17 17:24:30,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:24:30,389 INFO L479 AbstractCegarLoop]: Abstraction has 1091 states and 1490 transitions. [2020-07-17 17:24:30,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 17:24:30,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1490 transitions. [2020-07-17 17:24:30,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-17 17:24:30,391 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:24:30,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:24:30,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 17:24:30,392 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:24:30,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:24:30,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1375558424, now seen corresponding path program 1 times [2020-07-17 17:24:30,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:24:30,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122870991] [2020-07-17 17:24:30,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:24:30,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:30,424 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 17:24:30,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122870991] [2020-07-17 17:24:30,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:24:30,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 17:24:30,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029799910] [2020-07-17 17:24:30,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 17:24:30,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:24:30,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 17:24:30,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:30,427 INFO L87 Difference]: Start difference. First operand 1091 states and 1490 transitions. Second operand 3 states. [2020-07-17 17:24:30,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:24:30,574 INFO L93 Difference]: Finished difference Result 3127 states and 4308 transitions. [2020-07-17 17:24:30,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 17:24:30,575 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-07-17 17:24:30,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:24:30,585 INFO L225 Difference]: With dead ends: 3127 [2020-07-17 17:24:30,586 INFO L226 Difference]: Without dead ends: 2085 [2020-07-17 17:24:30,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:30,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2020-07-17 17:24:30,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 2083. [2020-07-17 17:24:30,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2083 states. [2020-07-17 17:24:30,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2834 transitions. [2020-07-17 17:24:30,733 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2834 transitions. Word has length 83 [2020-07-17 17:24:30,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:24:30,733 INFO L479 AbstractCegarLoop]: Abstraction has 2083 states and 2834 transitions. [2020-07-17 17:24:30,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 17:24:30,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2834 transitions. [2020-07-17 17:24:30,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-07-17 17:24:30,736 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:24:30,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:24:30,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-17 17:24:30,737 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:24:30,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:24:30,737 INFO L82 PathProgramCache]: Analyzing trace with hash -146869603, now seen corresponding path program 1 times [2020-07-17 17:24:30,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:24:30,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330369638] [2020-07-17 17:24:30,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:24:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:30,774 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 17:24:30,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330369638] [2020-07-17 17:24:30,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:24:30,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 17:24:30,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785030830] [2020-07-17 17:24:30,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 17:24:30,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:24:30,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 17:24:30,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:30,779 INFO L87 Difference]: Start difference. First operand 2083 states and 2834 transitions. Second operand 3 states. [2020-07-17 17:24:30,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:24:30,925 INFO L93 Difference]: Finished difference Result 2535 states and 3476 transitions. [2020-07-17 17:24:30,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 17:24:30,926 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-07-17 17:24:30,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:24:30,939 INFO L225 Difference]: With dead ends: 2535 [2020-07-17 17:24:30,940 INFO L226 Difference]: Without dead ends: 2533 [2020-07-17 17:24:30,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:30,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2020-07-17 17:24:31,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 2083. [2020-07-17 17:24:31,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2083 states. [2020-07-17 17:24:31,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2818 transitions. [2020-07-17 17:24:31,178 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2818 transitions. Word has length 84 [2020-07-17 17:24:31,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:24:31,179 INFO L479 AbstractCegarLoop]: Abstraction has 2083 states and 2818 transitions. [2020-07-17 17:24:31,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 17:24:31,179 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2818 transitions. [2020-07-17 17:24:31,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-07-17 17:24:31,183 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:24:31,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:24:31,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-17 17:24:31,184 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:24:31,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:24:31,184 INFO L82 PathProgramCache]: Analyzing trace with hash -307116750, now seen corresponding path program 1 times [2020-07-17 17:24:31,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:24:31,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979909263] [2020-07-17 17:24:31,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:24:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:31,237 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 17:24:31,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979909263] [2020-07-17 17:24:31,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:24:31,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 17:24:31,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779778049] [2020-07-17 17:24:31,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 17:24:31,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:24:31,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 17:24:31,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:31,240 INFO L87 Difference]: Start difference. First operand 2083 states and 2818 transitions. Second operand 3 states. [2020-07-17 17:24:31,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:24:31,496 INFO L93 Difference]: Finished difference Result 6055 states and 8228 transitions. [2020-07-17 17:24:31,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 17:24:31,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-07-17 17:24:31,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:24:31,522 INFO L225 Difference]: With dead ends: 6055 [2020-07-17 17:24:31,522 INFO L226 Difference]: Without dead ends: 4021 [2020-07-17 17:24:31,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:31,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2020-07-17 17:24:31,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 4019. [2020-07-17 17:24:31,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4019 states. [2020-07-17 17:24:31,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4019 states to 4019 states and 5394 transitions. [2020-07-17 17:24:31,858 INFO L78 Accepts]: Start accepts. Automaton has 4019 states and 5394 transitions. Word has length 84 [2020-07-17 17:24:31,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:24:31,858 INFO L479 AbstractCegarLoop]: Abstraction has 4019 states and 5394 transitions. [2020-07-17 17:24:31,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 17:24:31,858 INFO L276 IsEmpty]: Start isEmpty. Operand 4019 states and 5394 transitions. [2020-07-17 17:24:31,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-07-17 17:24:31,863 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:24:31,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:24:31,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-17 17:24:31,864 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:24:31,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:24:31,865 INFO L82 PathProgramCache]: Analyzing trace with hash -322854350, now seen corresponding path program 1 times [2020-07-17 17:24:31,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:24:31,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360861216] [2020-07-17 17:24:31,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:24:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:31,906 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 17:24:31,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360861216] [2020-07-17 17:24:31,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:24:31,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 17:24:31,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524969726] [2020-07-17 17:24:31,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 17:24:31,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:24:31,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 17:24:31,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:31,909 INFO L87 Difference]: Start difference. First operand 4019 states and 5394 transitions. Second operand 3 states. [2020-07-17 17:24:32,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:24:32,204 INFO L93 Difference]: Finished difference Result 4855 states and 6548 transitions. [2020-07-17 17:24:32,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 17:24:32,205 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-07-17 17:24:32,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:24:32,230 INFO L225 Difference]: With dead ends: 4855 [2020-07-17 17:24:32,231 INFO L226 Difference]: Without dead ends: 4853 [2020-07-17 17:24:32,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:32,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4853 states. [2020-07-17 17:24:32,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4853 to 4019. [2020-07-17 17:24:32,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4019 states. [2020-07-17 17:24:32,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4019 states to 4019 states and 5362 transitions. [2020-07-17 17:24:32,489 INFO L78 Accepts]: Start accepts. Automaton has 4019 states and 5362 transitions. Word has length 85 [2020-07-17 17:24:32,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:24:32,489 INFO L479 AbstractCegarLoop]: Abstraction has 4019 states and 5362 transitions. [2020-07-17 17:24:32,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 17:24:32,490 INFO L276 IsEmpty]: Start isEmpty. Operand 4019 states and 5362 transitions. [2020-07-17 17:24:32,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-07-17 17:24:32,494 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:24:32,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:24:32,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-17 17:24:32,495 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:24:32,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:24:32,495 INFO L82 PathProgramCache]: Analyzing trace with hash -930439220, now seen corresponding path program 1 times [2020-07-17 17:24:32,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:24:32,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029202600] [2020-07-17 17:24:32,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:24:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:32,527 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 17:24:32,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029202600] [2020-07-17 17:24:32,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:24:32,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 17:24:32,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534935155] [2020-07-17 17:24:32,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 17:24:32,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:24:32,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 17:24:32,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:32,530 INFO L87 Difference]: Start difference. First operand 4019 states and 5362 transitions. Second operand 3 states. [2020-07-17 17:24:32,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:24:32,944 INFO L93 Difference]: Finished difference Result 11767 states and 15732 transitions. [2020-07-17 17:24:32,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 17:24:32,945 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-07-17 17:24:32,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:24:32,985 INFO L225 Difference]: With dead ends: 11767 [2020-07-17 17:24:32,986 INFO L226 Difference]: Without dead ends: 7797 [2020-07-17 17:24:33,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:33,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7797 states. [2020-07-17 17:24:33,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7797 to 7795. [2020-07-17 17:24:33,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7795 states. [2020-07-17 17:24:33,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7795 states to 7795 states and 10290 transitions. [2020-07-17 17:24:33,617 INFO L78 Accepts]: Start accepts. Automaton has 7795 states and 10290 transitions. Word has length 85 [2020-07-17 17:24:33,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:24:33,618 INFO L479 AbstractCegarLoop]: Abstraction has 7795 states and 10290 transitions. [2020-07-17 17:24:33,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 17:24:33,618 INFO L276 IsEmpty]: Start isEmpty. Operand 7795 states and 10290 transitions. [2020-07-17 17:24:33,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-07-17 17:24:33,625 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:24:33,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:24:33,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-17 17:24:33,626 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:24:33,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:24:33,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1483413839, now seen corresponding path program 1 times [2020-07-17 17:24:33,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:24:33,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086160239] [2020-07-17 17:24:33,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:24:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:33,664 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 17:24:33,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086160239] [2020-07-17 17:24:33,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:24:33,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 17:24:33,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380375558] [2020-07-17 17:24:33,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 17:24:33,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:24:33,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 17:24:33,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:33,667 INFO L87 Difference]: Start difference. First operand 7795 states and 10290 transitions. Second operand 3 states. [2020-07-17 17:24:34,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:24:34,270 INFO L93 Difference]: Finished difference Result 9335 states and 12340 transitions. [2020-07-17 17:24:34,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 17:24:34,271 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-07-17 17:24:34,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:24:34,321 INFO L225 Difference]: With dead ends: 9335 [2020-07-17 17:24:34,322 INFO L226 Difference]: Without dead ends: 9333 [2020-07-17 17:24:34,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:34,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9333 states. [2020-07-17 17:24:34,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9333 to 7795. [2020-07-17 17:24:34,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7795 states. [2020-07-17 17:24:34,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7795 states to 7795 states and 10226 transitions. [2020-07-17 17:24:34,895 INFO L78 Accepts]: Start accepts. Automaton has 7795 states and 10226 transitions. Word has length 86 [2020-07-17 17:24:34,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:24:34,896 INFO L479 AbstractCegarLoop]: Abstraction has 7795 states and 10226 transitions. [2020-07-17 17:24:34,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 17:24:34,896 INFO L276 IsEmpty]: Start isEmpty. Operand 7795 states and 10226 transitions. [2020-07-17 17:24:34,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-07-17 17:24:34,903 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:24:34,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:24:34,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-17 17:24:34,904 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:24:34,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:24:34,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1221401062, now seen corresponding path program 1 times [2020-07-17 17:24:34,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:24:34,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435858342] [2020-07-17 17:24:34,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:24:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:34,933 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 17:24:34,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435858342] [2020-07-17 17:24:34,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:24:34,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 17:24:34,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993417932] [2020-07-17 17:24:34,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 17:24:34,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:24:34,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 17:24:34,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:34,935 INFO L87 Difference]: Start difference. First operand 7795 states and 10226 transitions. Second operand 3 states. [2020-07-17 17:24:36,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:24:36,223 INFO L93 Difference]: Finished difference Result 22903 states and 30068 transitions. [2020-07-17 17:24:36,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 17:24:36,224 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-07-17 17:24:36,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:24:36,272 INFO L225 Difference]: With dead ends: 22903 [2020-07-17 17:24:36,272 INFO L226 Difference]: Without dead ends: 15157 [2020-07-17 17:24:36,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:36,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15157 states. [2020-07-17 17:24:37,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15157 to 15155. [2020-07-17 17:24:37,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15155 states. [2020-07-17 17:24:37,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15155 states to 15155 states and 19634 transitions. [2020-07-17 17:24:37,839 INFO L78 Accepts]: Start accepts. Automaton has 15155 states and 19634 transitions. Word has length 86 [2020-07-17 17:24:37,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:24:37,840 INFO L479 AbstractCegarLoop]: Abstraction has 15155 states and 19634 transitions. [2020-07-17 17:24:37,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 17:24:37,840 INFO L276 IsEmpty]: Start isEmpty. Operand 15155 states and 19634 transitions. [2020-07-17 17:24:37,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-07-17 17:24:37,850 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:24:37,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:24:37,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-17 17:24:37,851 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:24:37,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:24:37,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1193948038, now seen corresponding path program 1 times [2020-07-17 17:24:37,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:24:37,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728966757] [2020-07-17 17:24:37,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:24:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:37,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:37,880 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 17:24:37,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728966757] [2020-07-17 17:24:37,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:24:37,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 17:24:37,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665936073] [2020-07-17 17:24:37,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 17:24:37,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:24:37,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 17:24:37,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:37,883 INFO L87 Difference]: Start difference. First operand 15155 states and 19634 transitions. Second operand 3 states. [2020-07-17 17:24:38,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:24:38,922 INFO L93 Difference]: Finished difference Result 17975 states and 23220 transitions. [2020-07-17 17:24:38,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 17:24:38,923 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-07-17 17:24:38,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:24:38,963 INFO L225 Difference]: With dead ends: 17975 [2020-07-17 17:24:38,963 INFO L226 Difference]: Without dead ends: 17973 [2020-07-17 17:24:38,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:38,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17973 states. [2020-07-17 17:24:39,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17973 to 15155. [2020-07-17 17:24:39,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15155 states. [2020-07-17 17:24:39,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15155 states to 15155 states and 19506 transitions. [2020-07-17 17:24:39,926 INFO L78 Accepts]: Start accepts. Automaton has 15155 states and 19506 transitions. Word has length 87 [2020-07-17 17:24:39,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:24:39,926 INFO L479 AbstractCegarLoop]: Abstraction has 15155 states and 19506 transitions. [2020-07-17 17:24:39,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 17:24:39,926 INFO L276 IsEmpty]: Start isEmpty. Operand 15155 states and 19506 transitions. [2020-07-17 17:24:39,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-07-17 17:24:39,935 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:24:39,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:24:39,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-17 17:24:39,935 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:24:39,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:24:39,936 INFO L82 PathProgramCache]: Analyzing trace with hash -791026560, now seen corresponding path program 1 times [2020-07-17 17:24:39,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:24:39,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699163530] [2020-07-17 17:24:39,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:24:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:39,964 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 17:24:39,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699163530] [2020-07-17 17:24:39,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:24:39,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 17:24:39,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158147542] [2020-07-17 17:24:39,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 17:24:39,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:24:39,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 17:24:39,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:39,966 INFO L87 Difference]: Start difference. First operand 15155 states and 19506 transitions. Second operand 3 states. [2020-07-17 17:24:41,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:24:41,157 INFO L93 Difference]: Finished difference Result 44599 states and 57396 transitions. [2020-07-17 17:24:41,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 17:24:41,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-07-17 17:24:41,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:24:41,232 INFO L225 Difference]: With dead ends: 44599 [2020-07-17 17:24:41,232 INFO L226 Difference]: Without dead ends: 29493 [2020-07-17 17:24:41,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:41,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29493 states. [2020-07-17 17:24:44,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29493 to 29491. [2020-07-17 17:24:44,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29491 states. [2020-07-17 17:24:44,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29491 states to 29491 states and 37426 transitions. [2020-07-17 17:24:44,133 INFO L78 Accepts]: Start accepts. Automaton has 29491 states and 37426 transitions. Word has length 87 [2020-07-17 17:24:44,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:24:44,133 INFO L479 AbstractCegarLoop]: Abstraction has 29491 states and 37426 transitions. [2020-07-17 17:24:44,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 17:24:44,133 INFO L276 IsEmpty]: Start isEmpty. Operand 29491 states and 37426 transitions. [2020-07-17 17:24:44,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-07-17 17:24:44,150 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:24:44,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:24:44,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-17 17:24:44,151 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:24:44,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:24:44,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1707179323, now seen corresponding path program 1 times [2020-07-17 17:24:44,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:24:44,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306268066] [2020-07-17 17:24:44,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:24:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:44,185 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 17:24:44,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306268066] [2020-07-17 17:24:44,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:24:44,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 17:24:44,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562129826] [2020-07-17 17:24:44,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 17:24:44,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:24:44,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 17:24:44,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:44,188 INFO L87 Difference]: Start difference. First operand 29491 states and 37426 transitions. Second operand 3 states. [2020-07-17 17:24:45,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:24:45,778 INFO L93 Difference]: Finished difference Result 34615 states and 43572 transitions. [2020-07-17 17:24:45,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 17:24:45,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-07-17 17:24:45,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:24:45,848 INFO L225 Difference]: With dead ends: 34615 [2020-07-17 17:24:45,848 INFO L226 Difference]: Without dead ends: 34613 [2020-07-17 17:24:45,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:45,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34613 states. [2020-07-17 17:24:47,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34613 to 29491. [2020-07-17 17:24:47,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29491 states. [2020-07-17 17:24:47,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29491 states to 29491 states and 37170 transitions. [2020-07-17 17:24:47,582 INFO L78 Accepts]: Start accepts. Automaton has 29491 states and 37170 transitions. Word has length 88 [2020-07-17 17:24:47,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:24:47,582 INFO L479 AbstractCegarLoop]: Abstraction has 29491 states and 37170 transitions. [2020-07-17 17:24:47,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 17:24:47,582 INFO L276 IsEmpty]: Start isEmpty. Operand 29491 states and 37170 transitions. [2020-07-17 17:24:47,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-07-17 17:24:47,595 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:24:47,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:24:47,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-17 17:24:47,596 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:24:47,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:24:47,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1248226970, now seen corresponding path program 1 times [2020-07-17 17:24:47,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:24:47,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234286420] [2020-07-17 17:24:47,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:24:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:47,636 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 17:24:47,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234286420] [2020-07-17 17:24:47,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:24:47,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 17:24:47,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911944907] [2020-07-17 17:24:47,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 17:24:47,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:24:47,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 17:24:47,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:47,639 INFO L87 Difference]: Start difference. First operand 29491 states and 37170 transitions. Second operand 3 states. [2020-07-17 17:24:51,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:24:51,376 INFO L93 Difference]: Finished difference Result 86839 states and 109364 transitions. [2020-07-17 17:24:51,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 17:24:51,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-07-17 17:24:51,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:24:51,508 INFO L225 Difference]: With dead ends: 86839 [2020-07-17 17:24:51,508 INFO L226 Difference]: Without dead ends: 57397 [2020-07-17 17:24:51,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:51,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57397 states. [2020-07-17 17:24:54,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57397 to 57395. [2020-07-17 17:24:54,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57395 states. [2020-07-17 17:24:54,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57395 states to 57395 states and 71218 transitions. [2020-07-17 17:24:54,571 INFO L78 Accepts]: Start accepts. Automaton has 57395 states and 71218 transitions. Word has length 88 [2020-07-17 17:24:54,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:24:54,571 INFO L479 AbstractCegarLoop]: Abstraction has 57395 states and 71218 transitions. [2020-07-17 17:24:54,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 17:24:54,571 INFO L276 IsEmpty]: Start isEmpty. Operand 57395 states and 71218 transitions. [2020-07-17 17:24:54,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-07-17 17:24:54,594 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:24:54,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:24:54,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-07-17 17:24:54,595 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:24:54,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:24:54,595 INFO L82 PathProgramCache]: Analyzing trace with hash 40577332, now seen corresponding path program 1 times [2020-07-17 17:24:54,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:24:54,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362409614] [2020-07-17 17:24:54,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:24:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:24:54,626 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 17:24:54,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362409614] [2020-07-17 17:24:54,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:24:54,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 17:24:54,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869397145] [2020-07-17 17:24:54,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 17:24:54,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:24:54,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 17:24:54,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:24:54,630 INFO L87 Difference]: Start difference. First operand 57395 states and 71218 transitions. Second operand 3 states. [2020-07-17 17:25:01,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:25:01,621 INFO L93 Difference]: Finished difference Result 169015 states and 209460 transitions. [2020-07-17 17:25:01,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 17:25:01,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-07-17 17:25:01,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:25:01,734 INFO L225 Difference]: With dead ends: 169015 [2020-07-17 17:25:01,734 INFO L226 Difference]: Without dead ends: 85301 [2020-07-17 17:25:01,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:25:01,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85301 states. [2020-07-17 17:25:06,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85301 to 85299. [2020-07-17 17:25:06,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85299 states. [2020-07-17 17:25:08,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85299 states to 85299 states and 103218 transitions. [2020-07-17 17:25:08,673 INFO L78 Accepts]: Start accepts. Automaton has 85299 states and 103218 transitions. Word has length 89 [2020-07-17 17:25:08,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:25:08,673 INFO L479 AbstractCegarLoop]: Abstraction has 85299 states and 103218 transitions. [2020-07-17 17:25:08,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 17:25:08,673 INFO L276 IsEmpty]: Start isEmpty. Operand 85299 states and 103218 transitions. [2020-07-17 17:25:08,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-07-17 17:25:08,700 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:25:08,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:25:08,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-07-17 17:25:08,701 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:25:08,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:25:08,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1447813926, now seen corresponding path program 1 times [2020-07-17 17:25:08,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:25:08,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771251122] [2020-07-17 17:25:08,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:25:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:25:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:25:08,734 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 17:25:08,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771251122] [2020-07-17 17:25:08,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:25:08,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 17:25:08,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457998231] [2020-07-17 17:25:08,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 17:25:08,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:25:08,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 17:25:08,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:25:08,736 INFO L87 Difference]: Start difference. First operand 85299 states and 103218 transitions. Second operand 3 states. [2020-07-17 17:25:12,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:25:12,848 INFO L93 Difference]: Finished difference Result 94519 states and 112948 transitions. [2020-07-17 17:25:12,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 17:25:12,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-07-17 17:25:12,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:25:12,949 INFO L225 Difference]: With dead ends: 94519 [2020-07-17 17:25:12,949 INFO L226 Difference]: Without dead ends: 66613 [2020-07-17 17:25:12,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:25:13,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66613 states. [2020-07-17 17:25:15,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66613 to 57395. [2020-07-17 17:25:15,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57395 states. [2020-07-17 17:25:16,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57395 states to 57395 states and 68658 transitions. [2020-07-17 17:25:16,002 INFO L78 Accepts]: Start accepts. Automaton has 57395 states and 68658 transitions. Word has length 89 [2020-07-17 17:25:16,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:25:16,002 INFO L479 AbstractCegarLoop]: Abstraction has 57395 states and 68658 transitions. [2020-07-17 17:25:16,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 17:25:16,003 INFO L276 IsEmpty]: Start isEmpty. Operand 57395 states and 68658 transitions. [2020-07-17 17:25:16,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-07-17 17:25:16,018 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:25:16,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:25:16,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-07-17 17:25:16,019 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:25:16,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:25:16,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1997420839, now seen corresponding path program 1 times [2020-07-17 17:25:16,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:25:16,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716646328] [2020-07-17 17:25:16,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:25:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:25:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:25:16,049 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 17:25:16,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716646328] [2020-07-17 17:25:16,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:25:16,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 17:25:16,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916752612] [2020-07-17 17:25:16,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 17:25:16,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:25:16,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 17:25:16,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:25:16,053 INFO L87 Difference]: Start difference. First operand 57395 states and 68658 transitions. Second operand 3 states. [2020-07-17 17:25:19,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:25:19,814 INFO L93 Difference]: Finished difference Result 57395 states and 68658 transitions. [2020-07-17 17:25:19,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 17:25:19,816 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-07-17 17:25:19,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:25:19,816 INFO L225 Difference]: With dead ends: 57395 [2020-07-17 17:25:19,816 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 17:25:19,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:25:19,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 17:25:19,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 17:25:19,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 17:25:19,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 17:25:19,870 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 90 [2020-07-17 17:25:19,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:25:19,871 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 17:25:19,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 17:25:19,871 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 17:25:19,871 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 17:25:19,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-07-17 17:25:19,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 17:25:25,616 WARN L193 SmtUtils]: Spent 5.60 s on a formula simplification. DAG size of input: 2085 DAG size of output: 91 [2020-07-17 17:25:27,227 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 1051 DAG size of output: 15 [2020-07-17 17:25:37,014 WARN L193 SmtUtils]: Spent 9.78 s on a formula simplification. DAG size of input: 3629 DAG size of output: 15 [2020-07-17 17:25:40,978 WARN L193 SmtUtils]: Spent 3.96 s on a formula simplification. DAG size of input: 1071 DAG size of output: 553 [2020-07-17 17:25:48,305 WARN L193 SmtUtils]: Spent 7.31 s on a formula simplification. DAG size of input: 4137 DAG size of output: 3 [2020-07-17 17:25:53,843 WARN L193 SmtUtils]: Spent 5.52 s on a formula simplification. DAG size of input: 2089 DAG size of output: 291 [2020-07-17 17:25:54,560 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 1055 DAG size of output: 35 [2020-07-17 17:25:58,824 WARN L193 SmtUtils]: Spent 4.26 s on a formula simplification. DAG size of input: 2146 DAG size of output: 159 [2020-07-17 17:25:59,788 WARN L193 SmtUtils]: Spent 957.00 ms on a formula simplification. DAG size of input: 1167 DAG size of output: 57 [2020-07-17 17:26:01,013 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 1453 DAG size of output: 25 [2020-07-17 17:26:16,974 WARN L193 SmtUtils]: Spent 15.95 s on a formula simplification. DAG size of input: 2093 DAG size of output: 1067 [2020-07-17 17:26:17,946 WARN L193 SmtUtils]: Spent 965.00 ms on a formula simplification. DAG size of input: 1059 DAG size of output: 91 [2020-07-17 17:26:26,323 WARN L193 SmtUtils]: Spent 8.37 s on a formula simplification that was a NOOP. DAG size: 1069 [2020-07-17 17:26:35,259 WARN L193 SmtUtils]: Spent 8.93 s on a formula simplification. DAG size of input: 5162 DAG size of output: 7 [2020-07-17 17:26:37,693 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 1078 DAG size of output: 293 [2020-07-17 17:26:40,245 WARN L193 SmtUtils]: Spent 2.54 s on a formula simplification. DAG size of input: 2073 DAG size of output: 7 [2020-07-17 17:26:42,410 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 1063 DAG size of output: 291 [2020-07-17 17:26:45,975 WARN L193 SmtUtils]: Spent 3.56 s on a formula simplification. DAG size of input: 2193 DAG size of output: 91 [2020-07-17 17:26:46,937 WARN L193 SmtUtils]: Spent 955.00 ms on a formula simplification. DAG size of input: 1262 DAG size of output: 37 [2020-07-17 17:26:49,172 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 1836 DAG size of output: 17 [2020-07-17 17:26:52,029 WARN L193 SmtUtils]: Spent 2.85 s on a formula simplification. DAG size of input: 2079 DAG size of output: 23 [2020-07-17 17:26:59,513 WARN L193 SmtUtils]: Spent 7.48 s on a formula simplification that was a NOOP. DAG size: 1067 [2020-07-17 17:27:03,695 WARN L193 SmtUtils]: Spent 4.18 s on a formula simplification. DAG size of input: 1071 DAG size of output: 553 [2020-07-17 17:27:05,245 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 1089 DAG size of output: 161 [2020-07-17 17:27:08,454 WARN L193 SmtUtils]: Spent 3.19 s on a formula simplification. DAG size of input: 2083 DAG size of output: 55 [2020-07-17 17:27:09,097 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 1047 DAG size of output: 7 [2020-07-17 17:27:12,294 WARN L193 SmtUtils]: Spent 3.19 s on a formula simplification. DAG size of input: 2288 DAG size of output: 55 [2020-07-17 17:27:13,515 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 1453 DAG size of output: 25 [2020-07-17 17:27:19,658 WARN L193 SmtUtils]: Spent 6.14 s on a formula simplification. DAG size of input: 2603 DAG size of output: 11 [2020-07-17 17:27:24,004 WARN L193 SmtUtils]: Spent 4.33 s on a formula simplification. DAG size of input: 2087 DAG size of output: 159 [2020-07-17 17:27:24,723 WARN L193 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 1053 DAG size of output: 23 [2020-07-17 17:27:40,584 WARN L193 SmtUtils]: Spent 15.85 s on a formula simplification. DAG size of input: 2100 DAG size of output: 1067 [2020-07-17 17:27:42,866 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 1078 DAG size of output: 293 [2020-07-17 17:27:43,834 WARN L193 SmtUtils]: Spent 963.00 ms on a formula simplification. DAG size of input: 1120 DAG size of output: 93 [2020-07-17 17:27:52,807 WARN L193 SmtUtils]: Spent 8.96 s on a formula simplification. DAG size of input: 2091 DAG size of output: 551 [2020-07-17 17:27:53,568 WARN L193 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 1057 DAG size of output: 55 [2020-07-17 17:27:56,554 WARN L193 SmtUtils]: Spent 2.98 s on a formula simplification. DAG size of input: 2479 DAG size of output: 35 [2020-07-17 17:27:58,675 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 1836 DAG size of output: 17 [2020-07-17 17:28:05,641 WARN L193 SmtUtils]: Spent 6.96 s on a formula simplification. DAG size of input: 4137 DAG size of output: 3 [2020-07-17 17:28:38,018 WARN L193 SmtUtils]: Spent 32.37 s on a formula simplification that was a NOOP. DAG size: 2095 [2020-07-17 17:28:46,824 WARN L193 SmtUtils]: Spent 8.80 s on a formula simplification. DAG size of input: 2104 DAG size of output: 551 [2020-07-17 17:28:48,191 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 1061 DAG size of output: 159 [2020-07-17 17:28:49,618 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 1089 DAG size of output: 161 [2020-07-17 17:28:50,619 WARN L193 SmtUtils]: Spent 995.00 ms on a formula simplification. DAG size of input: 1167 DAG size of output: 57 [2020-07-17 17:28:53,407 WARN L193 SmtUtils]: Spent 2.78 s on a formula simplification. DAG size of input: 2077 DAG size of output: 15 [2020-07-17 17:28:57,155 WARN L193 SmtUtils]: Spent 3.74 s on a formula simplification. DAG size of input: 1065 DAG size of output: 551 [2020-07-17 17:29:00,850 WARN L193 SmtUtils]: Spent 3.69 s on a formula simplification. DAG size of input: 2862 DAG size of output: 23 [2020-07-17 17:29:08,947 WARN L193 SmtUtils]: Spent 8.09 s on a formula simplification that was a NOOP. DAG size: 1069 [2020-07-17 17:29:15,017 WARN L193 SmtUtils]: Spent 6.06 s on a formula simplification. DAG size of input: 2603 DAG size of output: 11 [2020-07-17 17:29:17,681 WARN L193 SmtUtils]: Spent 2.66 s on a formula simplification. DAG size of input: 2081 DAG size of output: 35 [2020-07-17 17:29:23,081 WARN L193 SmtUtils]: Spent 5.39 s on a formula simplification. DAG size of input: 2127 DAG size of output: 291 [2020-07-17 17:29:24,060 WARN L193 SmtUtils]: Spent 975.00 ms on a formula simplification. DAG size of input: 1120 DAG size of output: 93 [2020-07-17 17:29:24,933 WARN L193 SmtUtils]: Spent 868.00 ms on a formula simplification. DAG size of input: 1262 DAG size of output: 37 [2020-07-17 17:29:25,924 WARN L193 SmtUtils]: Spent 985.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-07-17 17:29:56,381 WARN L193 SmtUtils]: Spent 30.40 s on a formula simplification that was a NOOP. DAG size: 553 [2020-07-17 17:30:04,594 WARN L193 SmtUtils]: Spent 8.20 s on a formula simplification that was a NOOP. DAG size: 291 [2020-07-17 17:30:04,729 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-07-17 17:30:07,379 WARN L193 SmtUtils]: Spent 2.65 s on a formula simplification that was a NOOP. DAG size: 159 [2020-07-17 17:30:07,773 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-07-17 17:31:50,226 WARN L193 SmtUtils]: Spent 1.71 m on a formula simplification that was a NOOP. DAG size: 1067 [2020-07-17 17:31:51,121 WARN L193 SmtUtils]: Spent 890.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-07-17 17:33:38,176 WARN L193 SmtUtils]: Spent 1.78 m on a formula simplification that was a NOOP. DAG size: 1069 [2020-07-17 17:33:46,754 WARN L193 SmtUtils]: Spent 8.57 s on a formula simplification that was a NOOP. DAG size: 293 [2020-07-17 17:33:54,991 WARN L193 SmtUtils]: Spent 8.22 s on a formula simplification that was a NOOP. DAG size: 291 [2020-07-17 17:33:55,892 WARN L193 SmtUtils]: Spent 898.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-07-17 17:33:56,053 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-07-17 17:35:37,390 WARN L193 SmtUtils]: Spent 1.69 m on a formula simplification that was a NOOP. DAG size: 1067 [2020-07-17 17:36:07,521 WARN L193 SmtUtils]: Spent 30.12 s on a formula simplification that was a NOOP. DAG size: 553 [2020-07-17 17:36:10,423 WARN L193 SmtUtils]: Spent 2.89 s on a formula simplification that was a NOOP. DAG size: 161 [2020-07-17 17:36:10,759 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-07-17 17:36:11,096 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-07-17 17:36:13,737 WARN L193 SmtUtils]: Spent 2.55 s on a formula simplification that was a NOOP. DAG size: 159 [2020-07-17 17:37:51,491 WARN L193 SmtUtils]: Spent 1.63 m on a formula simplification that was a NOOP. DAG size: 1067