/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.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Addition03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:43:48,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:43:48,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:43:48,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:43:48,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:43:48,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:43:48,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:43:48,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:43:48,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:43:48,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:43:48,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:43:48,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:43:48,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:43:48,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:43:48,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:43:48,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:43:48,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:43:48,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:43:48,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:43:48,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:43:48,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:43:48,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:43:48,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:43:48,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:43:48,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 02:43:48,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:43:48,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:43:48,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:43:48,916 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 02:43:48,959 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:43:48,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:43:48,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:43:48,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:43:48,963 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:43:48,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:43:48,963 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:43:48,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:43:48,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:43:48,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:43:48,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:43:48,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:43:48,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:43:48,966 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:43:48,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:43:48,966 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:43:48,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:43:48,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:43:48,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:43:48,967 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:43:48,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:43:48,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:43:48,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:43:48,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:43:48,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:43:48,968 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:43:48,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:43:48,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:43:48,969 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:43:48,969 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES 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: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:43:49,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:43:49,315 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:43:49,319 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:43:49,320 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:43:49,321 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:43:49,321 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition03-1.c [2020-08-19 02:43:49,388 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f704c2b4a/6cc8fbc77b124da0999f953a54039336/FLAGcdd053882 [2020-08-19 02:43:49,815 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:43:49,816 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Addition03-1.c [2020-08-19 02:43:49,823 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f704c2b4a/6cc8fbc77b124da0999f953a54039336/FLAGcdd053882 [2020-08-19 02:43:50,235 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f704c2b4a/6cc8fbc77b124da0999f953a54039336 [2020-08-19 02:43:50,243 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:43:50,245 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:43:50,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:43:50,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:43:50,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:43:50,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:43:50" (1/1) ... [2020-08-19 02:43:50,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b2fc715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:50, skipping insertion in model container [2020-08-19 02:43:50,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:43:50" (1/1) ... [2020-08-19 02:43:50,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:43:50,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:43:50,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:43:50,527 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:43:50,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:43:50,557 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:43:50,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:50 WrapperNode [2020-08-19 02:43:50,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:43:50,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:43:50,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:43:50,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:43:50,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:50" (1/1) ... [2020-08-19 02:43:50,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:50" (1/1) ... [2020-08-19 02:43:50,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:50" (1/1) ... [2020-08-19 02:43:50,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:50" (1/1) ... [2020-08-19 02:43:50,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:50" (1/1) ... [2020-08-19 02:43:50,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:50" (1/1) ... [2020-08-19 02:43:50,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:50" (1/1) ... [2020-08-19 02:43:50,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:43:50,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:43:50,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:43:50,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:43:50,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:43:50,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:43:50,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:43:50,734 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-08-19 02:43:50,734 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:43:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:43:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:43:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-08-19 02:43:50,735 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:43:50,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:43:50,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:43:50,933 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:43:50,933 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 02:43:50,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:43:50 BoogieIcfgContainer [2020-08-19 02:43:50,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:43:50,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:43:50,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:43:50,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:43:50,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:43:50" (1/3) ... [2020-08-19 02:43:50,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1705476d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:43:50, skipping insertion in model container [2020-08-19 02:43:50,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:50" (2/3) ... [2020-08-19 02:43:50,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1705476d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:43:50, skipping insertion in model container [2020-08-19 02:43:50,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:43:50" (3/3) ... [2020-08-19 02:43:50,946 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition03-1.c [2020-08-19 02:43:50,957 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:43:50,965 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:43:50,982 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:43:51,013 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:43:51,014 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:43:51,014 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:43:51,014 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:43:51,015 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:43:51,015 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:43:51,015 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:43:51,015 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:43:51,041 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-08-19 02:43:51,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-19 02:43:51,052 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:43:51,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:43:51,054 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:43:51,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:43:51,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1540493149, now seen corresponding path program 1 times [2020-08-19 02:43:51,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:43:51,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525466918] [2020-08-19 02:43:51,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:43:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:51,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:43:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:51,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:43:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:51,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:43:51,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525466918] [2020-08-19 02:43:51,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:43:51,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:43:51,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426739791] [2020-08-19 02:43:51,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:43:51,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:43:51,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:43:51,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:43:51,337 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-08-19 02:43:51,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:43:51,472 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2020-08-19 02:43:51,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 02:43:51,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-19 02:43:51,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:43:51,486 INFO L225 Difference]: With dead ends: 36 [2020-08-19 02:43:51,487 INFO L226 Difference]: Without dead ends: 22 [2020-08-19 02:43:51,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:43:51,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-08-19 02:43:51,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-08-19 02:43:51,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-19 02:43:51,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2020-08-19 02:43:51,543 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 13 [2020-08-19 02:43:51,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:43:51,544 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2020-08-19 02:43:51,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:43:51,545 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2020-08-19 02:43:51,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 02:43:51,547 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:43:51,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:43:51,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:43:51,548 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:43:51,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:43:51,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1700112874, now seen corresponding path program 1 times [2020-08-19 02:43:51,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:43:51,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433317849] [2020-08-19 02:43:51,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:43:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:51,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:43:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:51,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:43:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:51,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:43:51,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433317849] [2020-08-19 02:43:51,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:43:51,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:43:51,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796544773] [2020-08-19 02:43:51,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:43:51,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:43:51,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:43:51,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:43:51,618 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 4 states. [2020-08-19 02:43:51,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:43:51,655 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2020-08-19 02:43:51,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 02:43:51,656 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-08-19 02:43:51,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:43:51,657 INFO L225 Difference]: With dead ends: 32 [2020-08-19 02:43:51,657 INFO L226 Difference]: Without dead ends: 24 [2020-08-19 02:43:51,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:43:51,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-08-19 02:43:51,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-08-19 02:43:51,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-19 02:43:51,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-08-19 02:43:51,669 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2020-08-19 02:43:51,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:43:51,669 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-08-19 02:43:51,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:43:51,669 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-08-19 02:43:51,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 02:43:51,671 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:43:51,671 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:43:51,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:43:51,672 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:43:51,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:43:51,672 INFO L82 PathProgramCache]: Analyzing trace with hash -35294164, now seen corresponding path program 1 times [2020-08-19 02:43:51,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:43:51,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325573247] [2020-08-19 02:43:51,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:43:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:51,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:43:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:51,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:43:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:51,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:51,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-19 02:43:51,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325573247] [2020-08-19 02:43:51,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:43:51,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-19 02:43:51,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957421124] [2020-08-19 02:43:51,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:43:51,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:43:51,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:43:51,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:43:51,835 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 6 states. [2020-08-19 02:43:51,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:43:51,940 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-08-19 02:43:51,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 02:43:51,941 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-08-19 02:43:51,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:43:51,942 INFO L225 Difference]: With dead ends: 29 [2020-08-19 02:43:51,943 INFO L226 Difference]: Without dead ends: 25 [2020-08-19 02:43:51,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:43:51,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-19 02:43:51,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-19 02:43:51,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-19 02:43:51,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2020-08-19 02:43:51,952 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 20 [2020-08-19 02:43:51,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:43:51,952 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2020-08-19 02:43:51,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:43:51,953 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2020-08-19 02:43:51,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-19 02:43:51,954 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:43:51,954 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:43:51,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:43:51,955 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:43:51,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:43:51,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1261456781, now seen corresponding path program 2 times [2020-08-19 02:43:51,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:43:51,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735325780] [2020-08-19 02:43:51,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:43:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:52,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:43:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:52,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:43:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:52,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:52,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:52,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:52,109 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-19 02:43:52,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735325780] [2020-08-19 02:43:52,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:43:52,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 02:43:52,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090448394] [2020-08-19 02:43:52,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 02:43:52,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:43:52,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 02:43:52,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:43:52,112 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand 7 states. [2020-08-19 02:43:52,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:43:52,280 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2020-08-19 02:43:52,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 02:43:52,281 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-08-19 02:43:52,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:43:52,283 INFO L225 Difference]: With dead ends: 43 [2020-08-19 02:43:52,283 INFO L226 Difference]: Without dead ends: 39 [2020-08-19 02:43:52,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:43:52,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-08-19 02:43:52,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-08-19 02:43:52,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-19 02:43:52,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2020-08-19 02:43:52,296 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 27 [2020-08-19 02:43:52,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:43:52,296 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2020-08-19 02:43:52,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 02:43:52,296 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2020-08-19 02:43:52,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-19 02:43:52,298 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:43:52,299 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:43:52,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:43:52,299 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:43:52,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:43:52,300 INFO L82 PathProgramCache]: Analyzing trace with hash 2131329174, now seen corresponding path program 3 times [2020-08-19 02:43:52,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:43:52,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646010776] [2020-08-19 02:43:52,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:43:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:52,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:43:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:52,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:43:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:52,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:52,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:52,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:52,540 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-19 02:43:52,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646010776] [2020-08-19 02:43:52,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:43:52,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-19 02:43:52,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70780295] [2020-08-19 02:43:52,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:43:52,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:43:52,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:43:52,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:43:52,543 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand 8 states. [2020-08-19 02:43:52,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:43:52,698 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2020-08-19 02:43:52,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 02:43:52,699 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-08-19 02:43:52,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:43:52,701 INFO L225 Difference]: With dead ends: 46 [2020-08-19 02:43:52,701 INFO L226 Difference]: Without dead ends: 42 [2020-08-19 02:43:52,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:43:52,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-19 02:43:52,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-08-19 02:43:52,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-19 02:43:52,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 56 transitions. [2020-08-19 02:43:52,712 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 56 transitions. Word has length 34 [2020-08-19 02:43:52,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:43:52,713 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 56 transitions. [2020-08-19 02:43:52,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:43:52,713 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 56 transitions. [2020-08-19 02:43:52,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-19 02:43:52,715 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:43:52,715 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:43:52,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:43:52,716 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:43:52,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:43:52,716 INFO L82 PathProgramCache]: Analyzing trace with hash -867295607, now seen corresponding path program 4 times [2020-08-19 02:43:52,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:43:52,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364562927] [2020-08-19 02:43:52,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:43:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:52,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:43:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:52,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:43:52,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:52,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:52,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:52,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:52,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:52,929 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-19 02:43:52,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364562927] [2020-08-19 02:43:52,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:43:52,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 02:43:52,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502994532] [2020-08-19 02:43:52,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:43:52,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:43:52,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:43:52,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:43:52,936 INFO L87 Difference]: Start difference. First operand 42 states and 56 transitions. Second operand 9 states. [2020-08-19 02:43:53,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:43:53,110 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2020-08-19 02:43:53,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 02:43:53,111 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2020-08-19 02:43:53,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:43:53,113 INFO L225 Difference]: With dead ends: 49 [2020-08-19 02:43:53,113 INFO L226 Difference]: Without dead ends: 45 [2020-08-19 02:43:53,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:43:53,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-08-19 02:43:53,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-08-19 02:43:53,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-08-19 02:43:53,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2020-08-19 02:43:53,125 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 41 [2020-08-19 02:43:53,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:43:53,125 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2020-08-19 02:43:53,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:43:53,125 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2020-08-19 02:43:53,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-19 02:43:53,127 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:43:53,128 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:43:53,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:43:53,128 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:43:53,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:43:53,129 INFO L82 PathProgramCache]: Analyzing trace with hash -943688704, now seen corresponding path program 5 times [2020-08-19 02:43:53,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:43:53,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290396365] [2020-08-19 02:43:53,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:43:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:53,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:43:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:53,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:43:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:53,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:53,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:53,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:53,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:53,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:53,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:53,422 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-08-19 02:43:53,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290396365] [2020-08-19 02:43:53,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:43:53,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 02:43:53,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359393868] [2020-08-19 02:43:53,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:43:53,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:43:53,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:43:53,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:43:53,430 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand 10 states. [2020-08-19 02:43:53,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:43:53,615 INFO L93 Difference]: Finished difference Result 52 states and 66 transitions. [2020-08-19 02:43:53,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 02:43:53,615 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-08-19 02:43:53,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:43:53,616 INFO L225 Difference]: With dead ends: 52 [2020-08-19 02:43:53,617 INFO L226 Difference]: Without dead ends: 48 [2020-08-19 02:43:53,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-08-19 02:43:53,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-19 02:43:53,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-08-19 02:43:53,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-08-19 02:43:53,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2020-08-19 02:43:53,632 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 48 [2020-08-19 02:43:53,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:43:53,633 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2020-08-19 02:43:53,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:43:53,633 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2020-08-19 02:43:53,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-19 02:43:53,640 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:43:53,640 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:43:53,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:43:53,641 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:43:53,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:43:53,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1959654303, now seen corresponding path program 6 times [2020-08-19 02:43:53,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:43:53,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082460553] [2020-08-19 02:43:53,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:43:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:53,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:43:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:53,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:43:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:53,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:53,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:53,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:53,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:53,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:53,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:53,956 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-19 02:43:53,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082460553] [2020-08-19 02:43:53,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:43:53,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 02:43:53,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788758954] [2020-08-19 02:43:53,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 02:43:53,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:43:53,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 02:43:53,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-08-19 02:43:53,964 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand 11 states. [2020-08-19 02:43:54,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:43:54,170 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-08-19 02:43:54,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 02:43:54,172 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2020-08-19 02:43:54,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:43:54,177 INFO L225 Difference]: With dead ends: 55 [2020-08-19 02:43:54,177 INFO L226 Difference]: Without dead ends: 51 [2020-08-19 02:43:54,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:43:54,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-19 02:43:54,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-08-19 02:43:54,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-08-19 02:43:54,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2020-08-19 02:43:54,192 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 55 [2020-08-19 02:43:54,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:43:54,195 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2020-08-19 02:43:54,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 02:43:54,197 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2020-08-19 02:43:54,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-19 02:43:54,198 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:43:54,199 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:43:54,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 02:43:54,199 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:43:54,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:43:54,199 INFO L82 PathProgramCache]: Analyzing trace with hash 75083370, now seen corresponding path program 7 times [2020-08-19 02:43:54,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:43:54,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656163721] [2020-08-19 02:43:54,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:43:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:54,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:43:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:54,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:43:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:54,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:54,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:54,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:54,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:54,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:54,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:54,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:54,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:54,486 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-08-19 02:43:54,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656163721] [2020-08-19 02:43:54,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:43:54,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 02:43:54,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925160225] [2020-08-19 02:43:54,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:43:54,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:43:54,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:43:54,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:43:54,499 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand 12 states. [2020-08-19 02:43:54,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:43:54,706 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2020-08-19 02:43:54,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 02:43:54,707 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2020-08-19 02:43:54,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:43:54,708 INFO L225 Difference]: With dead ends: 58 [2020-08-19 02:43:54,709 INFO L226 Difference]: Without dead ends: 54 [2020-08-19 02:43:54,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2020-08-19 02:43:54,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-19 02:43:54,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-08-19 02:43:54,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-19 02:43:54,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-08-19 02:43:54,726 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 62 [2020-08-19 02:43:54,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:43:54,729 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-08-19 02:43:54,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:43:54,730 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-08-19 02:43:54,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-19 02:43:54,731 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:43:54,731 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:43:54,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 02:43:54,731 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:43:54,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:43:54,732 INFO L82 PathProgramCache]: Analyzing trace with hash 980406709, now seen corresponding path program 8 times [2020-08-19 02:43:54,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:43:54,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210785792] [2020-08-19 02:43:54,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:43:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:54,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:43:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:54,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:43:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:54,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:54,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:54,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:54,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:54,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:54,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:55,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:55,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:55,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:55,054 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-08-19 02:43:55,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210785792] [2020-08-19 02:43:55,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:43:55,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 02:43:55,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703144693] [2020-08-19 02:43:55,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 02:43:55,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:43:55,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 02:43:55,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-08-19 02:43:55,057 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 13 states. [2020-08-19 02:43:55,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:43:55,289 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2020-08-19 02:43:55,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 02:43:55,289 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 69 [2020-08-19 02:43:55,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:43:55,291 INFO L225 Difference]: With dead ends: 61 [2020-08-19 02:43:55,291 INFO L226 Difference]: Without dead ends: 57 [2020-08-19 02:43:55,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2020-08-19 02:43:55,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-19 02:43:55,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-08-19 02:43:55,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-08-19 02:43:55,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2020-08-19 02:43:55,301 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 69 [2020-08-19 02:43:55,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:43:55,301 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2020-08-19 02:43:55,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 02:43:55,302 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2020-08-19 02:43:55,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-08-19 02:43:55,303 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:43:55,303 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:43:55,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 02:43:55,304 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:43:55,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:43:55,304 INFO L82 PathProgramCache]: Analyzing trace with hash -654012460, now seen corresponding path program 9 times [2020-08-19 02:43:55,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:43:55,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872915562] [2020-08-19 02:43:55,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:43:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:55,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:43:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:55,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:43:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:55,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:55,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:55,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:55,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:55,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:55,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:55,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:55,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:55,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:55,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:55,655 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-08-19 02:43:55,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872915562] [2020-08-19 02:43:55,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:43:55,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 02:43:55,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638019925] [2020-08-19 02:43:55,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 02:43:55,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:43:55,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 02:43:55,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:43:55,658 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand 14 states. [2020-08-19 02:43:55,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:43:55,870 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2020-08-19 02:43:55,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 02:43:55,871 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 76 [2020-08-19 02:43:55,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:43:55,873 INFO L225 Difference]: With dead ends: 64 [2020-08-19 02:43:55,873 INFO L226 Difference]: Without dead ends: 60 [2020-08-19 02:43:55,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=200, Invalid=352, Unknown=0, NotChecked=0, Total=552 [2020-08-19 02:43:55,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-08-19 02:43:55,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-08-19 02:43:55,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-19 02:43:55,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2020-08-19 02:43:55,883 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 76 [2020-08-19 02:43:55,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:43:55,883 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2020-08-19 02:43:55,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 02:43:55,883 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2020-08-19 02:43:55,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 02:43:55,885 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:43:55,885 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:43:55,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 02:43:55,886 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:43:55,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:43:55,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1057728309, now seen corresponding path program 10 times [2020-08-19 02:43:55,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:43:55,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034530625] [2020-08-19 02:43:55,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:43:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:55,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:43:55,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:55,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:43:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:55,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:56,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:56,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:56,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:56,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:56,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:56,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:56,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:56,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:56,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:56,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:56,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:56,370 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-08-19 02:43:56,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034530625] [2020-08-19 02:43:56,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:43:56,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 02:43:56,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637074459] [2020-08-19 02:43:56,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 02:43:56,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:43:56,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 02:43:56,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-08-19 02:43:56,373 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand 15 states. [2020-08-19 02:43:56,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:43:56,637 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2020-08-19 02:43:56,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 02:43:56,638 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 83 [2020-08-19 02:43:56,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:43:56,639 INFO L225 Difference]: With dead ends: 67 [2020-08-19 02:43:56,639 INFO L226 Difference]: Without dead ends: 63 [2020-08-19 02:43:56,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=236, Invalid=414, Unknown=0, NotChecked=0, Total=650 [2020-08-19 02:43:56,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-08-19 02:43:56,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-08-19 02:43:56,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-08-19 02:43:56,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 77 transitions. [2020-08-19 02:43:56,663 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 77 transitions. Word has length 83 [2020-08-19 02:43:56,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:43:56,664 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 77 transitions. [2020-08-19 02:43:56,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 02:43:56,664 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 77 transitions. [2020-08-19 02:43:56,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-19 02:43:56,665 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:43:56,666 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:43:56,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 02:43:56,666 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:43:56,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:43:56,666 INFO L82 PathProgramCache]: Analyzing trace with hash -2104461250, now seen corresponding path program 11 times [2020-08-19 02:43:56,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:43:56,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937769772] [2020-08-19 02:43:56,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:43:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:56,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:43:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:56,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:43:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:56,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:56,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:56,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:56,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:56,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:56,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:56,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:57,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:57,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:57,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:57,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:57,173 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2020-08-19 02:43:57,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937769772] [2020-08-19 02:43:57,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:43:57,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 02:43:57,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097928619] [2020-08-19 02:43:57,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 02:43:57,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:43:57,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 02:43:57,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-08-19 02:43:57,176 INFO L87 Difference]: Start difference. First operand 63 states and 77 transitions. Second operand 16 states. [2020-08-19 02:43:57,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:43:57,420 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2020-08-19 02:43:57,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 02:43:57,420 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 90 [2020-08-19 02:43:57,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:43:57,422 INFO L225 Difference]: With dead ends: 70 [2020-08-19 02:43:57,422 INFO L226 Difference]: Without dead ends: 66 [2020-08-19 02:43:57,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=275, Invalid=481, Unknown=0, NotChecked=0, Total=756 [2020-08-19 02:43:57,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-08-19 02:43:57,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-08-19 02:43:57,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-08-19 02:43:57,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2020-08-19 02:43:57,435 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 90 [2020-08-19 02:43:57,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:43:57,436 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2020-08-19 02:43:57,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 02:43:57,436 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2020-08-19 02:43:57,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-19 02:43:57,438 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:43:57,438 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:43:57,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 02:43:57,439 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:43:57,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:43:57,439 INFO L82 PathProgramCache]: Analyzing trace with hash 565979361, now seen corresponding path program 12 times [2020-08-19 02:43:57,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:43:57,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064350134] [2020-08-19 02:43:57,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:43:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:57,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:43:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:57,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:43:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:57,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:57,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:57,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:57,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:57,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:57,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:57,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:57,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:57,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:57,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:57,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:57,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:58,007 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-08-19 02:43:58,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064350134] [2020-08-19 02:43:58,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:43:58,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-19 02:43:58,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004443670] [2020-08-19 02:43:58,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-19 02:43:58,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:43:58,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-19 02:43:58,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-08-19 02:43:58,010 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand 17 states. [2020-08-19 02:43:58,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:43:58,257 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2020-08-19 02:43:58,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-19 02:43:58,258 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 97 [2020-08-19 02:43:58,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:43:58,259 INFO L225 Difference]: With dead ends: 73 [2020-08-19 02:43:58,259 INFO L226 Difference]: Without dead ends: 69 [2020-08-19 02:43:58,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=317, Invalid=553, Unknown=0, NotChecked=0, Total=870 [2020-08-19 02:43:58,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-19 02:43:58,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-19 02:43:58,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-19 02:43:58,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 83 transitions. [2020-08-19 02:43:58,267 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 83 transitions. Word has length 97 [2020-08-19 02:43:58,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:43:58,268 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 83 transitions. [2020-08-19 02:43:58,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-19 02:43:58,268 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 83 transitions. [2020-08-19 02:43:58,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-19 02:43:58,269 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:43:58,270 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:43:58,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 02:43:58,270 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:43:58,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:43:58,270 INFO L82 PathProgramCache]: Analyzing trace with hash -106117208, now seen corresponding path program 13 times [2020-08-19 02:43:58,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:43:58,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568844932] [2020-08-19 02:43:58,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:43:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:58,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:43:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:58,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:43:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:58,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:58,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:58,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:58,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:58,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:58,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:58,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:58,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:58,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:58,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:58,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:58,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:58,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:58,821 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2020-08-19 02:43:58,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568844932] [2020-08-19 02:43:58,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:43:58,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-19 02:43:58,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17224410] [2020-08-19 02:43:58,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-19 02:43:58,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:43:58,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-19 02:43:58,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:43:58,823 INFO L87 Difference]: Start difference. First operand 69 states and 83 transitions. Second operand 18 states. [2020-08-19 02:43:59,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:43:59,108 INFO L93 Difference]: Finished difference Result 76 states and 90 transitions. [2020-08-19 02:43:59,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-19 02:43:59,108 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 104 [2020-08-19 02:43:59,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:43:59,110 INFO L225 Difference]: With dead ends: 76 [2020-08-19 02:43:59,110 INFO L226 Difference]: Without dead ends: 72 [2020-08-19 02:43:59,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=362, Invalid=630, Unknown=0, NotChecked=0, Total=992 [2020-08-19 02:43:59,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-08-19 02:43:59,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-08-19 02:43:59,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-08-19 02:43:59,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2020-08-19 02:43:59,123 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 104 [2020-08-19 02:43:59,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:43:59,124 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2020-08-19 02:43:59,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-19 02:43:59,124 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2020-08-19 02:43:59,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-19 02:43:59,128 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:43:59,128 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:43:59,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-19 02:43:59,129 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:43:59,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:43:59,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1237836279, now seen corresponding path program 14 times [2020-08-19 02:43:59,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:43:59,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011906663] [2020-08-19 02:43:59,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:43:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:59,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:43:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:59,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:43:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:59,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:59,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:59,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:59,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:59,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:59,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:59,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:59,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:59,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:59,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:59,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:59,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:59,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:59,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:59,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:43:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:59,772 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-08-19 02:43:59,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011906663] [2020-08-19 02:43:59,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:43:59,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 02:43:59,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566131400] [2020-08-19 02:43:59,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 02:43:59,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:43:59,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 02:43:59,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=202, Unknown=0, NotChecked=0, Total=342 [2020-08-19 02:43:59,780 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand 19 states. [2020-08-19 02:44:00,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:44:00,085 INFO L93 Difference]: Finished difference Result 79 states and 93 transitions. [2020-08-19 02:44:00,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 02:44:00,086 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 111 [2020-08-19 02:44:00,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:44:00,088 INFO L225 Difference]: With dead ends: 79 [2020-08-19 02:44:00,088 INFO L226 Difference]: Without dead ends: 75 [2020-08-19 02:44:00,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=410, Invalid=712, Unknown=0, NotChecked=0, Total=1122 [2020-08-19 02:44:00,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-08-19 02:44:00,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-08-19 02:44:00,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-19 02:44:00,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 89 transitions. [2020-08-19 02:44:00,098 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 89 transitions. Word has length 111 [2020-08-19 02:44:00,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:44:00,099 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 89 transitions. [2020-08-19 02:44:00,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 02:44:00,099 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 89 transitions. [2020-08-19 02:44:00,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-08-19 02:44:00,100 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:44:00,101 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:44:00,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-19 02:44:00,101 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:44:00,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:44:00,101 INFO L82 PathProgramCache]: Analyzing trace with hash 340319762, now seen corresponding path program 15 times [2020-08-19 02:44:00,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:44:00,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988157206] [2020-08-19 02:44:00,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:44:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:00,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:44:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:00,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:44:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:00,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:00,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:00,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:00,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:00,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:00,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:00,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:00,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:00,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:00,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:00,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:00,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:00,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:00,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:00,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:00,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:00,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:00,759 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2020-08-19 02:44:00,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988157206] [2020-08-19 02:44:00,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:44:00,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-08-19 02:44:00,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114894794] [2020-08-19 02:44:00,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-19 02:44:00,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:44:00,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-19 02:44:00,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=223, Unknown=0, NotChecked=0, Total=380 [2020-08-19 02:44:00,761 INFO L87 Difference]: Start difference. First operand 75 states and 89 transitions. Second operand 20 states. [2020-08-19 02:44:01,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:44:01,057 INFO L93 Difference]: Finished difference Result 82 states and 96 transitions. [2020-08-19 02:44:01,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 02:44:01,058 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 118 [2020-08-19 02:44:01,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:44:01,059 INFO L225 Difference]: With dead ends: 82 [2020-08-19 02:44:01,059 INFO L226 Difference]: Without dead ends: 78 [2020-08-19 02:44:01,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=461, Invalid=799, Unknown=0, NotChecked=0, Total=1260 [2020-08-19 02:44:01,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-08-19 02:44:01,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-08-19 02:44:01,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-19 02:44:01,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2020-08-19 02:44:01,067 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 118 [2020-08-19 02:44:01,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:44:01,068 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2020-08-19 02:44:01,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-19 02:44:01,068 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2020-08-19 02:44:01,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-08-19 02:44:01,070 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:44:01,070 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:44:01,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-19 02:44:01,070 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:44:01,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:44:01,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1471685645, now seen corresponding path program 16 times [2020-08-19 02:44:01,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:44:01,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154680689] [2020-08-19 02:44:01,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:44:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:01,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:44:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:01,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:44:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:01,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:01,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:01,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:01,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:01,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:01,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:01,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:01,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:01,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:01,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:01,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:01,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:01,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:01,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:01,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:01,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:01,868 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2020-08-19 02:44:01,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154680689] [2020-08-19 02:44:01,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:44:01,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-19 02:44:01,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680520896] [2020-08-19 02:44:01,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-19 02:44:01,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:44:01,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-19 02:44:01,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=245, Unknown=0, NotChecked=0, Total=420 [2020-08-19 02:44:01,871 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand 21 states. [2020-08-19 02:44:02,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:44:02,190 INFO L93 Difference]: Finished difference Result 85 states and 99 transitions. [2020-08-19 02:44:02,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 02:44:02,191 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 125 [2020-08-19 02:44:02,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:44:02,192 INFO L225 Difference]: With dead ends: 85 [2020-08-19 02:44:02,192 INFO L226 Difference]: Without dead ends: 81 [2020-08-19 02:44:02,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=515, Invalid=891, Unknown=0, NotChecked=0, Total=1406 [2020-08-19 02:44:02,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-08-19 02:44:02,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-08-19 02:44:02,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-08-19 02:44:02,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 95 transitions. [2020-08-19 02:44:02,200 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 95 transitions. Word has length 125 [2020-08-19 02:44:02,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:44:02,200 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 95 transitions. [2020-08-19 02:44:02,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-19 02:44:02,201 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 95 transitions. [2020-08-19 02:44:02,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-19 02:44:02,202 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:44:02,203 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:44:02,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-19 02:44:02,203 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:44:02,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:44:02,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1481368708, now seen corresponding path program 17 times [2020-08-19 02:44:02,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:44:02,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353896607] [2020-08-19 02:44:02,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:44:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:02,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:44:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:02,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:44:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:02,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:02,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:02,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:02,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:02,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:02,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:02,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:02,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:02,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:02,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:02,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:02,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:02,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:02,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:02,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:02,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:02,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:03,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2020-08-19 02:44:03,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353896607] [2020-08-19 02:44:03,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:44:03,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-19 02:44:03,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367986096] [2020-08-19 02:44:03,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-19 02:44:03,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:44:03,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-19 02:44:03,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=268, Unknown=0, NotChecked=0, Total=462 [2020-08-19 02:44:03,034 INFO L87 Difference]: Start difference. First operand 81 states and 95 transitions. Second operand 22 states. [2020-08-19 02:44:03,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:44:03,343 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2020-08-19 02:44:03,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 02:44:03,344 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 132 [2020-08-19 02:44:03,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:44:03,345 INFO L225 Difference]: With dead ends: 88 [2020-08-19 02:44:03,345 INFO L226 Difference]: Without dead ends: 84 [2020-08-19 02:44:03,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=572, Invalid=988, Unknown=0, NotChecked=0, Total=1560 [2020-08-19 02:44:03,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-08-19 02:44:03,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-08-19 02:44:03,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-08-19 02:44:03,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 98 transitions. [2020-08-19 02:44:03,352 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 98 transitions. Word has length 132 [2020-08-19 02:44:03,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:44:03,353 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 98 transitions. [2020-08-19 02:44:03,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-19 02:44:03,353 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 98 transitions. [2020-08-19 02:44:03,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-19 02:44:03,354 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:44:03,355 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:44:03,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-19 02:44:03,355 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:44:03,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:44:03,356 INFO L82 PathProgramCache]: Analyzing trace with hash -103968989, now seen corresponding path program 18 times [2020-08-19 02:44:03,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:44:03,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904245644] [2020-08-19 02:44:03,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:44:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:03,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:44:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:03,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:44:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:03,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:03,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:03,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:03,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:03,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:03,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:03,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:03,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:03,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:03,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:03,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:04,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:04,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:04,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:04,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:04,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:04,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:04,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:04,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2020-08-19 02:44:04,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904245644] [2020-08-19 02:44:04,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:44:04,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-08-19 02:44:04,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896404516] [2020-08-19 02:44:04,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-19 02:44:04,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:44:04,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-19 02:44:04,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=292, Unknown=0, NotChecked=0, Total=506 [2020-08-19 02:44:04,416 INFO L87 Difference]: Start difference. First operand 84 states and 98 transitions. Second operand 23 states. [2020-08-19 02:44:04,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:44:04,751 INFO L93 Difference]: Finished difference Result 91 states and 105 transitions. [2020-08-19 02:44:04,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 02:44:04,751 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 139 [2020-08-19 02:44:04,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:44:04,753 INFO L225 Difference]: With dead ends: 91 [2020-08-19 02:44:04,753 INFO L226 Difference]: Without dead ends: 87 [2020-08-19 02:44:04,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=632, Invalid=1090, Unknown=0, NotChecked=0, Total=1722 [2020-08-19 02:44:04,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-08-19 02:44:04,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-08-19 02:44:04,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-08-19 02:44:04,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 101 transitions. [2020-08-19 02:44:04,760 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 101 transitions. Word has length 139 [2020-08-19 02:44:04,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:44:04,761 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 101 transitions. [2020-08-19 02:44:04,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-19 02:44:04,761 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 101 transitions. [2020-08-19 02:44:04,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-19 02:44:04,762 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:44:04,763 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:44:04,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-19 02:44:04,763 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:44:04,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:44:04,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1432494106, now seen corresponding path program 19 times [2020-08-19 02:44:04,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:44:04,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67234850] [2020-08-19 02:44:04,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:44:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:04,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:44:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:04,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:44:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:04,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:04,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:05,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:05,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:05,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:05,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:05,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:05,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:05,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:05,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:05,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:05,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:05,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:05,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:05,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:05,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:05,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:05,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:05,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:05,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2020-08-19 02:44:05,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67234850] [2020-08-19 02:44:05,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:44:05,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-08-19 02:44:05,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887162849] [2020-08-19 02:44:05,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-08-19 02:44:05,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:44:05,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-08-19 02:44:05,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=317, Unknown=0, NotChecked=0, Total=552 [2020-08-19 02:44:05,805 INFO L87 Difference]: Start difference. First operand 87 states and 101 transitions. Second operand 24 states. [2020-08-19 02:44:06,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:44:06,205 INFO L93 Difference]: Finished difference Result 94 states and 108 transitions. [2020-08-19 02:44:06,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-19 02:44:06,205 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 146 [2020-08-19 02:44:06,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:44:06,206 INFO L225 Difference]: With dead ends: 94 [2020-08-19 02:44:06,206 INFO L226 Difference]: Without dead ends: 90 [2020-08-19 02:44:06,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=695, Invalid=1197, Unknown=0, NotChecked=0, Total=1892 [2020-08-19 02:44:06,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-08-19 02:44:06,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-08-19 02:44:06,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-08-19 02:44:06,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 104 transitions. [2020-08-19 02:44:06,220 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 104 transitions. Word has length 146 [2020-08-19 02:44:06,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:44:06,220 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 104 transitions. [2020-08-19 02:44:06,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-08-19 02:44:06,221 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 104 transitions. [2020-08-19 02:44:06,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-19 02:44:06,222 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:44:06,222 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:44:06,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-19 02:44:06,223 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:44:06,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:44:06,223 INFO L82 PathProgramCache]: Analyzing trace with hash -873938119, now seen corresponding path program 20 times [2020-08-19 02:44:06,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:44:06,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026456956] [2020-08-19 02:44:06,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:44:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:06,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:44:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:06,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:44:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:06,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:06,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:06,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:06,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:06,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:06,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:06,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:06,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:06,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:06,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:06,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:06,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:06,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:06,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:06,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:06,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:06,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:06,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:07,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:07,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:07,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2020-08-19 02:44:07,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026456956] [2020-08-19 02:44:07,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:44:07,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-08-19 02:44:07,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004149108] [2020-08-19 02:44:07,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-08-19 02:44:07,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:44:07,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-08-19 02:44:07,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=343, Unknown=0, NotChecked=0, Total=600 [2020-08-19 02:44:07,224 INFO L87 Difference]: Start difference. First operand 90 states and 104 transitions. Second operand 25 states. [2020-08-19 02:44:07,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:44:07,647 INFO L93 Difference]: Finished difference Result 97 states and 111 transitions. [2020-08-19 02:44:07,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-19 02:44:07,647 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 153 [2020-08-19 02:44:07,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:44:07,648 INFO L225 Difference]: With dead ends: 97 [2020-08-19 02:44:07,648 INFO L226 Difference]: Without dead ends: 93 [2020-08-19 02:44:07,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=761, Invalid=1309, Unknown=0, NotChecked=0, Total=2070 [2020-08-19 02:44:07,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-08-19 02:44:07,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-08-19 02:44:07,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-08-19 02:44:07,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 107 transitions. [2020-08-19 02:44:07,658 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 107 transitions. Word has length 153 [2020-08-19 02:44:07,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:44:07,658 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 107 transitions. [2020-08-19 02:44:07,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-08-19 02:44:07,659 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 107 transitions. [2020-08-19 02:44:07,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-19 02:44:07,661 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:44:07,662 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:44:07,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-19 02:44:07,662 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:44:07,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:44:07,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1461029712, now seen corresponding path program 21 times [2020-08-19 02:44:07,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:44:07,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272339407] [2020-08-19 02:44:07,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:44:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:07,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:44:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:07,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:44:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:07,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:07,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:07,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:07,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:07,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:07,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:08,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:08,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:08,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:08,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:08,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:08,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:08,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:08,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:08,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:08,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:08,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:08,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:08,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:08,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:08,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:08,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:08,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:08,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2020-08-19 02:44:08,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272339407] [2020-08-19 02:44:08,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:44:08,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-08-19 02:44:08,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390719200] [2020-08-19 02:44:08,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-08-19 02:44:08,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:44:08,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-08-19 02:44:08,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=370, Unknown=0, NotChecked=0, Total=650 [2020-08-19 02:44:08,738 INFO L87 Difference]: Start difference. First operand 93 states and 107 transitions. Second operand 26 states. [2020-08-19 02:44:09,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:44:09,182 INFO L93 Difference]: Finished difference Result 100 states and 114 transitions. [2020-08-19 02:44:09,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-19 02:44:09,182 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 160 [2020-08-19 02:44:09,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:44:09,183 INFO L225 Difference]: With dead ends: 100 [2020-08-19 02:44:09,183 INFO L226 Difference]: Without dead ends: 96 [2020-08-19 02:44:09,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=830, Invalid=1426, Unknown=0, NotChecked=0, Total=2256 [2020-08-19 02:44:09,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-08-19 02:44:09,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-08-19 02:44:09,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-19 02:44:09,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-08-19 02:44:09,190 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 160 [2020-08-19 02:44:09,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:44:09,191 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-08-19 02:44:09,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-08-19 02:44:09,191 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-08-19 02:44:09,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-08-19 02:44:09,192 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:44:09,193 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:44:09,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-19 02:44:09,193 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:44:09,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:44:09,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1249222577, now seen corresponding path program 22 times [2020-08-19 02:44:09,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:44:09,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529798971] [2020-08-19 02:44:09,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:44:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:09,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:44:09,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:09,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:44:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:09,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:09,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:09,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:09,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:09,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:09,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:09,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:09,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:09,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:09,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:09,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:09,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:09,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:09,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:09,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:10,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:10,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:10,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:10,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:10,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:10,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:10,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:10,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2020-08-19 02:44:10,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529798971] [2020-08-19 02:44:10,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:44:10,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-08-19 02:44:10,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385165745] [2020-08-19 02:44:10,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-08-19 02:44:10,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:44:10,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-08-19 02:44:10,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=398, Unknown=0, NotChecked=0, Total=702 [2020-08-19 02:44:10,386 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 27 states. [2020-08-19 02:44:10,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:44:10,863 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2020-08-19 02:44:10,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-19 02:44:10,864 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 167 [2020-08-19 02:44:10,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:44:10,866 INFO L225 Difference]: With dead ends: 103 [2020-08-19 02:44:10,866 INFO L226 Difference]: Without dead ends: 99 [2020-08-19 02:44:10,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=902, Invalid=1548, Unknown=0, NotChecked=0, Total=2450 [2020-08-19 02:44:10,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-19 02:44:10,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-08-19 02:44:10,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-08-19 02:44:10,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 113 transitions. [2020-08-19 02:44:10,876 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 113 transitions. Word has length 167 [2020-08-19 02:44:10,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:44:10,876 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 113 transitions. [2020-08-19 02:44:10,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-08-19 02:44:10,877 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 113 transitions. [2020-08-19 02:44:10,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-08-19 02:44:10,879 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:44:10,879 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:44:10,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-19 02:44:10,882 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:44:10,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:44:10,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1284144570, now seen corresponding path program 23 times [2020-08-19 02:44:10,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:44:10,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985368219] [2020-08-19 02:44:10,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:44:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:10,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:44:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:10,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:44:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:11,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:11,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:11,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:11,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:11,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:11,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:11,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:11,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:11,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:11,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:11,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:11,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:11,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:11,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:11,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:11,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:11,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:11,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:11,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:11,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:11,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:11,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:11,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:12,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2020-08-19 02:44:12,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985368219] [2020-08-19 02:44:12,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:44:12,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-19 02:44:12,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802906766] [2020-08-19 02:44:12,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-19 02:44:12,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:44:12,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-19 02:44:12,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=427, Unknown=0, NotChecked=0, Total=756 [2020-08-19 02:44:12,142 INFO L87 Difference]: Start difference. First operand 99 states and 113 transitions. Second operand 28 states. [2020-08-19 02:44:12,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:44:12,600 INFO L93 Difference]: Finished difference Result 106 states and 120 transitions. [2020-08-19 02:44:12,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-19 02:44:12,600 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 174 [2020-08-19 02:44:12,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:44:12,602 INFO L225 Difference]: With dead ends: 106 [2020-08-19 02:44:12,602 INFO L226 Difference]: Without dead ends: 102 [2020-08-19 02:44:12,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=977, Invalid=1675, Unknown=0, NotChecked=0, Total=2652 [2020-08-19 02:44:12,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-08-19 02:44:12,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-08-19 02:44:12,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-08-19 02:44:12,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 116 transitions. [2020-08-19 02:44:12,610 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 116 transitions. Word has length 174 [2020-08-19 02:44:12,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:44:12,610 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 116 transitions. [2020-08-19 02:44:12,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-19 02:44:12,611 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 116 transitions. [2020-08-19 02:44:12,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-08-19 02:44:12,613 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:44:12,613 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:44:12,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-19 02:44:12,613 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:44:12,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:44:12,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1205012069, now seen corresponding path program 24 times [2020-08-19 02:44:12,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:44:12,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264828151] [2020-08-19 02:44:12,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:44:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:12,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:44:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:12,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:44:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:12,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:12,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:12,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:12,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:12,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:12,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:12,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:13,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:13,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:13,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:13,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:13,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:13,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:13,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:13,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:13,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:13,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:13,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:13,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:13,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:13,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:13,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:13,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:13,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:13,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:13,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:13,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2020-08-19 02:44:13,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264828151] [2020-08-19 02:44:13,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:44:13,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-08-19 02:44:13,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772161071] [2020-08-19 02:44:13,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-08-19 02:44:13,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:44:13,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-08-19 02:44:13,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=457, Unknown=0, NotChecked=0, Total=812 [2020-08-19 02:44:13,933 INFO L87 Difference]: Start difference. First operand 102 states and 116 transitions. Second operand 29 states. [2020-08-19 02:44:14,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:44:14,433 INFO L93 Difference]: Finished difference Result 109 states and 123 transitions. [2020-08-19 02:44:14,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-19 02:44:14,433 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 181 [2020-08-19 02:44:14,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:44:14,436 INFO L225 Difference]: With dead ends: 109 [2020-08-19 02:44:14,436 INFO L226 Difference]: Without dead ends: 105 [2020-08-19 02:44:14,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1055, Invalid=1807, Unknown=0, NotChecked=0, Total=2862 [2020-08-19 02:44:14,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-08-19 02:44:14,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-08-19 02:44:14,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-19 02:44:14,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 119 transitions. [2020-08-19 02:44:14,444 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 119 transitions. Word has length 181 [2020-08-19 02:44:14,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:44:14,445 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 119 transitions. [2020-08-19 02:44:14,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-08-19 02:44:14,445 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 119 transitions. [2020-08-19 02:44:14,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-08-19 02:44:14,447 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:44:14,448 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:44:14,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-19 02:44:14,448 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:44:14,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:44:14,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1312024796, now seen corresponding path program 25 times [2020-08-19 02:44:14,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:44:14,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941671354] [2020-08-19 02:44:14,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:44:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:14,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:44:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:14,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:44:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:14,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:14,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:14,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:14,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:14,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:14,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:14,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:14,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:14,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:14,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:14,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:15,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:15,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:15,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:15,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:15,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:15,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:15,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:15,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:15,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:15,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:15,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:15,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:15,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:15,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:15,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2020-08-19 02:44:15,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941671354] [2020-08-19 02:44:15,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:44:15,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-08-19 02:44:15,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460146790] [2020-08-19 02:44:15,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-08-19 02:44:15,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:44:15,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-08-19 02:44:15,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=488, Unknown=0, NotChecked=0, Total=870 [2020-08-19 02:44:15,718 INFO L87 Difference]: Start difference. First operand 105 states and 119 transitions. Second operand 30 states. [2020-08-19 02:44:16,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:44:16,238 INFO L93 Difference]: Finished difference Result 112 states and 126 transitions. [2020-08-19 02:44:16,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 02:44:16,239 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 188 [2020-08-19 02:44:16,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:44:16,241 INFO L225 Difference]: With dead ends: 112 [2020-08-19 02:44:16,242 INFO L226 Difference]: Without dead ends: 108 [2020-08-19 02:44:16,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1136, Invalid=1944, Unknown=0, NotChecked=0, Total=3080 [2020-08-19 02:44:16,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-08-19 02:44:16,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-08-19 02:44:16,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-08-19 02:44:16,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 122 transitions. [2020-08-19 02:44:16,249 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 122 transitions. Word has length 188 [2020-08-19 02:44:16,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:44:16,249 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 122 transitions. [2020-08-19 02:44:16,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-08-19 02:44:16,249 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 122 transitions. [2020-08-19 02:44:16,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-08-19 02:44:16,250 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:44:16,251 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:44:16,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-19 02:44:16,251 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:44:16,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:44:16,251 INFO L82 PathProgramCache]: Analyzing trace with hash 461591931, now seen corresponding path program 26 times [2020-08-19 02:44:16,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:44:16,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048056343] [2020-08-19 02:44:16,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:44:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:16,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:44:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:16,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:44:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:16,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:16,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:16,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:16,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:16,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:16,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:16,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:16,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:16,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:16,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:16,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:16,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:16,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:16,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:16,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:17,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:17,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:17,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:17,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:17,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:17,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:17,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:17,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:17,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:17,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:17,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:17,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:17,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 1027 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2020-08-19 02:44:17,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048056343] [2020-08-19 02:44:17,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:44:17,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-08-19 02:44:17,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226477281] [2020-08-19 02:44:17,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-08-19 02:44:17,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:44:17,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-08-19 02:44:17,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=520, Unknown=0, NotChecked=0, Total=930 [2020-08-19 02:44:17,897 INFO L87 Difference]: Start difference. First operand 108 states and 122 transitions. Second operand 31 states. [2020-08-19 02:44:18,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:44:18,439 INFO L93 Difference]: Finished difference Result 115 states and 129 transitions. [2020-08-19 02:44:18,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-08-19 02:44:18,440 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 195 [2020-08-19 02:44:18,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:44:18,442 INFO L225 Difference]: With dead ends: 115 [2020-08-19 02:44:18,442 INFO L226 Difference]: Without dead ends: 111 [2020-08-19 02:44:18,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1220, Invalid=2086, Unknown=0, NotChecked=0, Total=3306 [2020-08-19 02:44:18,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-08-19 02:44:18,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-08-19 02:44:18,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-19 02:44:18,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 125 transitions. [2020-08-19 02:44:18,448 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 125 transitions. Word has length 195 [2020-08-19 02:44:18,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:44:18,449 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 125 transitions. [2020-08-19 02:44:18,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-08-19 02:44:18,449 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 125 transitions. [2020-08-19 02:44:18,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-08-19 02:44:18,450 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:44:18,451 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:44:18,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-19 02:44:18,451 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:44:18,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:44:18,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1460254606, now seen corresponding path program 27 times [2020-08-19 02:44:18,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:44:18,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551668479] [2020-08-19 02:44:18,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:44:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:18,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:44:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:18,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:44:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:18,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:18,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:18,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:18,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:18,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:18,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:18,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:18,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:18,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:18,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:19,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:19,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:19,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:19,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:19,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:19,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:19,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:19,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:19,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:19,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:19,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:19,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:19,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:19,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:19,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:19,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:19,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:20,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2020-08-19 02:44:20,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551668479] [2020-08-19 02:44:20,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:44:20,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-08-19 02:44:20,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55276101] [2020-08-19 02:44:20,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-08-19 02:44:20,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:44:20,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-08-19 02:44:20,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=553, Unknown=0, NotChecked=0, Total=992 [2020-08-19 02:44:20,304 INFO L87 Difference]: Start difference. First operand 111 states and 125 transitions. Second operand 32 states. [2020-08-19 02:44:20,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:44:20,860 INFO L93 Difference]: Finished difference Result 118 states and 132 transitions. [2020-08-19 02:44:20,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-19 02:44:20,861 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 202 [2020-08-19 02:44:20,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:44:20,863 INFO L225 Difference]: With dead ends: 118 [2020-08-19 02:44:20,863 INFO L226 Difference]: Without dead ends: 114 [2020-08-19 02:44:20,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1307, Invalid=2233, Unknown=0, NotChecked=0, Total=3540 [2020-08-19 02:44:20,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-08-19 02:44:20,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-08-19 02:44:20,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-19 02:44:20,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 128 transitions. [2020-08-19 02:44:20,870 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 128 transitions. Word has length 202 [2020-08-19 02:44:20,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:44:20,871 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 128 transitions. [2020-08-19 02:44:20,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-08-19 02:44:20,871 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 128 transitions. [2020-08-19 02:44:20,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-08-19 02:44:20,872 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:44:20,873 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:44:20,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-19 02:44:20,873 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:44:20,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:44:20,873 INFO L82 PathProgramCache]: Analyzing trace with hash 788262289, now seen corresponding path program 28 times [2020-08-19 02:44:20,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:44:20,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730766440] [2020-08-19 02:44:20,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:44:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:20,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:44:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:20,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:44:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:20,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:21,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:21,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:21,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:21,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:21,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:21,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:21,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:21,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:21,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:21,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:21,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:21,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:21,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:21,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:21,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:21,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:21,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:21,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:21,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:21,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:21,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:22,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:22,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:22,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:22,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:22,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:22,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:22,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:22,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:22,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2020-08-19 02:44:22,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730766440] [2020-08-19 02:44:22,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:44:22,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-08-19 02:44:22,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042374593] [2020-08-19 02:44:22,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-08-19 02:44:22,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:44:22,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-08-19 02:44:22,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=587, Unknown=0, NotChecked=0, Total=1056 [2020-08-19 02:44:22,567 INFO L87 Difference]: Start difference. First operand 114 states and 128 transitions. Second operand 33 states. [2020-08-19 02:44:23,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:44:23,150 INFO L93 Difference]: Finished difference Result 121 states and 135 transitions. [2020-08-19 02:44:23,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-08-19 02:44:23,151 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 209 [2020-08-19 02:44:23,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:44:23,152 INFO L225 Difference]: With dead ends: 121 [2020-08-19 02:44:23,153 INFO L226 Difference]: Without dead ends: 117 [2020-08-19 02:44:23,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1397, Invalid=2385, Unknown=0, NotChecked=0, Total=3782 [2020-08-19 02:44:23,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-08-19 02:44:23,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-08-19 02:44:23,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-19 02:44:23,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 131 transitions. [2020-08-19 02:44:23,162 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 131 transitions. Word has length 209 [2020-08-19 02:44:23,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:44:23,162 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 131 transitions. [2020-08-19 02:44:23,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-08-19 02:44:23,162 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 131 transitions. [2020-08-19 02:44:23,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-08-19 02:44:23,164 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:44:23,164 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:44:23,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-19 02:44:23,164 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:44:23,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:44:23,165 INFO L82 PathProgramCache]: Analyzing trace with hash -674054408, now seen corresponding path program 29 times [2020-08-19 02:44:23,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:44:23,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761083340] [2020-08-19 02:44:23,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:44:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:23,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:44:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:23,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:44:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:23,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:23,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:23,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:23,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:23,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:23,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:23,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:23,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:23,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:23,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:23,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:23,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:23,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:23,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:23,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:24,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:24,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:24,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:24,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:24,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:24,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:24,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:24,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:24,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:24,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:24,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:24,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:24,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:24,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:24,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:24,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:24,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:24,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 1276 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2020-08-19 02:44:24,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761083340] [2020-08-19 02:44:24,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:44:24,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-08-19 02:44:24,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206416252] [2020-08-19 02:44:24,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-08-19 02:44:24,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:44:24,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-08-19 02:44:24,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=622, Unknown=0, NotChecked=0, Total=1122 [2020-08-19 02:44:24,921 INFO L87 Difference]: Start difference. First operand 117 states and 131 transitions. Second operand 34 states. [2020-08-19 02:44:25,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:44:25,551 INFO L93 Difference]: Finished difference Result 124 states and 138 transitions. [2020-08-19 02:44:25,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-19 02:44:25,551 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 216 [2020-08-19 02:44:25,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:44:25,553 INFO L225 Difference]: With dead ends: 124 [2020-08-19 02:44:25,554 INFO L226 Difference]: Without dead ends: 120 [2020-08-19 02:44:25,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1490, Invalid=2542, Unknown=0, NotChecked=0, Total=4032 [2020-08-19 02:44:25,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-08-19 02:44:25,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-08-19 02:44:25,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-19 02:44:25,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 134 transitions. [2020-08-19 02:44:25,561 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 134 transitions. Word has length 216 [2020-08-19 02:44:25,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:44:25,562 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 134 transitions. [2020-08-19 02:44:25,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-08-19 02:44:25,563 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 134 transitions. [2020-08-19 02:44:25,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-08-19 02:44:25,564 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:44:25,564 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:44:25,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-08-19 02:44:25,568 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:44:25,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:44:25,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1144876711, now seen corresponding path program 30 times [2020-08-19 02:44:25,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:44:25,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323057141] [2020-08-19 02:44:25,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:44:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:25,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:44:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:25,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:44:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:25,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:25,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:26,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:26,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:26,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:26,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:26,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:26,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:26,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:26,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:26,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:26,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:26,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:26,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:26,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:26,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:26,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:26,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:26,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:26,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:26,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:26,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:26,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:26,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:26,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:26,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:27,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:27,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:27,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:27,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:27,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:27,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:27,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:27,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2020-08-19 02:44:27,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323057141] [2020-08-19 02:44:27,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:44:27,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-08-19 02:44:27,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462590772] [2020-08-19 02:44:27,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-08-19 02:44:27,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:44:27,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-08-19 02:44:27,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=658, Unknown=0, NotChecked=0, Total=1190 [2020-08-19 02:44:27,599 INFO L87 Difference]: Start difference. First operand 120 states and 134 transitions. Second operand 35 states. [2020-08-19 02:44:28,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:44:28,239 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2020-08-19 02:44:28,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-19 02:44:28,239 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 223 [2020-08-19 02:44:28,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:44:28,241 INFO L225 Difference]: With dead ends: 127 [2020-08-19 02:44:28,242 INFO L226 Difference]: Without dead ends: 123 [2020-08-19 02:44:28,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1586, Invalid=2704, Unknown=0, NotChecked=0, Total=4290 [2020-08-19 02:44:28,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-08-19 02:44:28,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-08-19 02:44:28,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-19 02:44:28,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 137 transitions. [2020-08-19 02:44:28,249 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 137 transitions. Word has length 223 [2020-08-19 02:44:28,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:44:28,250 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 137 transitions. [2020-08-19 02:44:28,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-08-19 02:44:28,250 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 137 transitions. [2020-08-19 02:44:28,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-08-19 02:44:28,252 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:44:28,252 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:44:28,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-08-19 02:44:28,252 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:44:28,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:44:28,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1122595486, now seen corresponding path program 31 times [2020-08-19 02:44:28,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:44:28,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317165461] [2020-08-19 02:44:28,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:44:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:28,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:44:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:28,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:44:28,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:28,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:28,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:28,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:28,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:28,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:28,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:28,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:28,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:29,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:29,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:29,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:29,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:29,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:29,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:29,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:29,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:29,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:29,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:29,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:29,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:29,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:29,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:29,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:29,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:29,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:29,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:29,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:29,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:29,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:29,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:29,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:30,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2020-08-19 02:44:30,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317165461] [2020-08-19 02:44:30,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:44:30,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-08-19 02:44:30,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960274030] [2020-08-19 02:44:30,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-08-19 02:44:30,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:44:30,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-08-19 02:44:30,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=695, Unknown=0, NotChecked=0, Total=1260 [2020-08-19 02:44:30,412 INFO L87 Difference]: Start difference. First operand 123 states and 137 transitions. Second operand 36 states. [2020-08-19 02:44:31,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:44:31,079 INFO L93 Difference]: Finished difference Result 130 states and 144 transitions. [2020-08-19 02:44:31,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-19 02:44:31,080 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 230 [2020-08-19 02:44:31,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:44:31,082 INFO L225 Difference]: With dead ends: 130 [2020-08-19 02:44:31,082 INFO L226 Difference]: Without dead ends: 126 [2020-08-19 02:44:31,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1685, Invalid=2871, Unknown=0, NotChecked=0, Total=4556 [2020-08-19 02:44:31,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-08-19 02:44:31,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-08-19 02:44:31,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-19 02:44:31,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 140 transitions. [2020-08-19 02:44:31,095 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 140 transitions. Word has length 230 [2020-08-19 02:44:31,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:44:31,096 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 140 transitions. [2020-08-19 02:44:31,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-08-19 02:44:31,096 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 140 transitions. [2020-08-19 02:44:31,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-08-19 02:44:31,097 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:44:31,098 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:44:31,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-08-19 02:44:31,098 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:44:31,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:44:31,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1055422653, now seen corresponding path program 32 times [2020-08-19 02:44:31,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:44:31,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148399856] [2020-08-19 02:44:31,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:44:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:31,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:44:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:31,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:44:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:31,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:31,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:31,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:31,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:31,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:31,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:31,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:31,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:31,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:31,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:31,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:31,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:31,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:32,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:32,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:32,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:32,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:32,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:32,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:32,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:32,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:32,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:32,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:32,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:32,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:32,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:32,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:32,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:32,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:32,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:32,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:32,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:32,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:33,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 1552 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2020-08-19 02:44:33,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148399856] [2020-08-19 02:44:33,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:44:33,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-08-19 02:44:33,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628311875] [2020-08-19 02:44:33,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-08-19 02:44:33,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:44:33,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-08-19 02:44:33,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=733, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 02:44:33,362 INFO L87 Difference]: Start difference. First operand 126 states and 140 transitions. Second operand 37 states. [2020-08-19 02:44:34,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:44:34,051 INFO L93 Difference]: Finished difference Result 133 states and 147 transitions. [2020-08-19 02:44:34,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-08-19 02:44:34,052 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 237 [2020-08-19 02:44:34,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:44:34,054 INFO L225 Difference]: With dead ends: 133 [2020-08-19 02:44:34,054 INFO L226 Difference]: Without dead ends: 129 [2020-08-19 02:44:34,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1787, Invalid=3043, Unknown=0, NotChecked=0, Total=4830 [2020-08-19 02:44:34,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-08-19 02:44:34,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2020-08-19 02:44:34,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-19 02:44:34,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 143 transitions. [2020-08-19 02:44:34,060 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 143 transitions. Word has length 237 [2020-08-19 02:44:34,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:44:34,061 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 143 transitions. [2020-08-19 02:44:34,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-08-19 02:44:34,061 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 143 transitions. [2020-08-19 02:44:34,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-08-19 02:44:34,063 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:44:34,063 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:44:34,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-08-19 02:44:34,064 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:44:34,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:44:34,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1624997172, now seen corresponding path program 33 times [2020-08-19 02:44:34,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:44:34,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327947649] [2020-08-19 02:44:34,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:44:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:34,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:44:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:34,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:44:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:34,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:34,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:34,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:34,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:34,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:34,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:34,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:34,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:34,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:34,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:34,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:34,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:34,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:34,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:35,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:35,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:35,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:35,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:35,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:35,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:35,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:35,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:35,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:35,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:35,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:35,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:35,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:35,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:35,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:35,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:35,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:35,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:35,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:35,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:36,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 1650 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2020-08-19 02:44:36,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327947649] [2020-08-19 02:44:36,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:44:36,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-08-19 02:44:36,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318701734] [2020-08-19 02:44:36,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-08-19 02:44:36,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:44:36,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-08-19 02:44:36,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=634, Invalid=772, Unknown=0, NotChecked=0, Total=1406 [2020-08-19 02:44:36,350 INFO L87 Difference]: Start difference. First operand 129 states and 143 transitions. Second operand 38 states. [2020-08-19 02:44:37,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:44:37,111 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2020-08-19 02:44:37,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-08-19 02:44:37,112 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 244 [2020-08-19 02:44:37,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:44:37,114 INFO L225 Difference]: With dead ends: 136 [2020-08-19 02:44:37,115 INFO L226 Difference]: Without dead ends: 132 [2020-08-19 02:44:37,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1892, Invalid=3220, Unknown=0, NotChecked=0, Total=5112 [2020-08-19 02:44:37,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-08-19 02:44:37,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-08-19 02:44:37,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-19 02:44:37,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 146 transitions. [2020-08-19 02:44:37,123 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 146 transitions. Word has length 244 [2020-08-19 02:44:37,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:44:37,123 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 146 transitions. [2020-08-19 02:44:37,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-08-19 02:44:37,124 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 146 transitions. [2020-08-19 02:44:37,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-08-19 02:44:37,125 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:44:37,126 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:44:37,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-08-19 02:44:37,126 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:44:37,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:44:37,126 INFO L82 PathProgramCache]: Analyzing trace with hash -2109887533, now seen corresponding path program 34 times [2020-08-19 02:44:37,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:44:37,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347488719] [2020-08-19 02:44:37,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:44:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:37,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:44:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:37,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:44:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:37,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:37,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:37,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:37,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:37,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:37,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:37,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:37,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:38,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:38,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:38,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:38,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:38,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:38,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:38,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:38,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:38,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:38,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:38,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:38,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:38,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:38,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:38,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:38,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:38,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:38,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:38,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:38,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:39,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:39,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:39,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:39,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:39,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:39,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:39,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:39,790 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 0 proven. 1751 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2020-08-19 02:44:39,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347488719] [2020-08-19 02:44:39,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:44:39,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-08-19 02:44:39,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772609356] [2020-08-19 02:44:39,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-08-19 02:44:39,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:44:39,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-08-19 02:44:39,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=670, Invalid=812, Unknown=0, NotChecked=0, Total=1482 [2020-08-19 02:44:39,793 INFO L87 Difference]: Start difference. First operand 132 states and 146 transitions. Second operand 39 states. [2020-08-19 02:44:40,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:44:40,558 INFO L93 Difference]: Finished difference Result 139 states and 153 transitions. [2020-08-19 02:44:40,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-19 02:44:40,559 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 251 [2020-08-19 02:44:40,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:44:40,561 INFO L225 Difference]: With dead ends: 139 [2020-08-19 02:44:40,561 INFO L226 Difference]: Without dead ends: 135 [2020-08-19 02:44:40,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2000, Invalid=3402, Unknown=0, NotChecked=0, Total=5402 [2020-08-19 02:44:40,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-19 02:44:40,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2020-08-19 02:44:40,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-08-19 02:44:40,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 149 transitions. [2020-08-19 02:44:40,569 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 149 transitions. Word has length 251 [2020-08-19 02:44:40,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:44:40,569 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 149 transitions. [2020-08-19 02:44:40,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-08-19 02:44:40,570 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 149 transitions. [2020-08-19 02:44:40,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-08-19 02:44:40,571 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:44:40,572 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:44:40,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-08-19 02:44:40,572 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:44:40,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:44:40,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1202454326, now seen corresponding path program 35 times [2020-08-19 02:44:40,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:44:40,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912322035] [2020-08-19 02:44:40,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:44:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:40,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:44:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:40,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:44:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:40,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:40,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:40,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:41,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:41,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:41,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:41,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:41,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:41,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:41,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:41,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:41,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:41,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:41,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:41,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:41,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:41,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:41,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:41,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:41,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:41,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:42,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:42,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:42,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:42,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:42,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:42,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:42,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:42,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:42,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:42,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:42,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:42,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:42,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:42,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:43,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 1855 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-08-19 02:44:43,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912322035] [2020-08-19 02:44:43,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:44:43,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-08-19 02:44:43,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139888761] [2020-08-19 02:44:43,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-08-19 02:44:43,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:44:43,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-08-19 02:44:43,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=853, Unknown=0, NotChecked=0, Total=1560 [2020-08-19 02:44:43,166 INFO L87 Difference]: Start difference. First operand 135 states and 149 transitions. Second operand 40 states. [2020-08-19 02:44:43,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:44:43,933 INFO L93 Difference]: Finished difference Result 142 states and 156 transitions. [2020-08-19 02:44:43,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-19 02:44:43,933 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 258 [2020-08-19 02:44:43,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:44:43,935 INFO L225 Difference]: With dead ends: 142 [2020-08-19 02:44:43,935 INFO L226 Difference]: Without dead ends: 138 [2020-08-19 02:44:43,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2111, Invalid=3589, Unknown=0, NotChecked=0, Total=5700 [2020-08-19 02:44:43,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-19 02:44:43,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-08-19 02:44:43,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-19 02:44:43,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 152 transitions. [2020-08-19 02:44:43,948 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 152 transitions. Word has length 258 [2020-08-19 02:44:43,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:44:43,949 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 152 transitions. [2020-08-19 02:44:43,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-08-19 02:44:43,949 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 152 transitions. [2020-08-19 02:44:43,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-08-19 02:44:43,951 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:44:43,952 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:44:43,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-08-19 02:44:43,952 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:44:43,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:44:43,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1327343593, now seen corresponding path program 36 times [2020-08-19 02:44:43,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:44:43,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988601176] [2020-08-19 02:44:43,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:44:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:44,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:44:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:44,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:44:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:44,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:44,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:44,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:44,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:44,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:44,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:44,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:44,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 02:44:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:44:44,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3