/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -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 03:32:18,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:32:18,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:32:18,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:32:18,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:32:18,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:32:18,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:32:18,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:32:18,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:32:18,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:32:18,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:32:18,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:32:18,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:32:18,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:32:18,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:32:18,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:32:18,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:32:18,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:32:18,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:32:18,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:32:18,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:32:18,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:32:18,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:32:18,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:32:18,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 03:32:18,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:32:18,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:32:18,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:32:18,932 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 03:32:18,972 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:32:18,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:32:18,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:32:18,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:32:18,975 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:32:18,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:32:18,976 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:32:18,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:32:18,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:32:18,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:32:18,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:32:18,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:32:18,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:32:18,978 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:32:18,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:32:18,979 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:32:18,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:32:18,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:32:18,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:32:18,980 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:32:18,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:32:18,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:32:18,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:32:18,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:32:18,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:32:18,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:32:18,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:32:18,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:32:18,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:32:18,982 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=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:32:19,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:32:19,295 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:32:19,299 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:32:19,301 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:32:19,301 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:32:19,302 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition03-1.c [2020-08-19 03:32:19,367 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/410b32143/58476e9f3beb4c99bd34ea72578d5131/FLAG2b854558e [2020-08-19 03:32:19,803 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:32:19,804 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Addition03-1.c [2020-08-19 03:32:19,809 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/410b32143/58476e9f3beb4c99bd34ea72578d5131/FLAG2b854558e [2020-08-19 03:32:20,234 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/410b32143/58476e9f3beb4c99bd34ea72578d5131 [2020-08-19 03:32:20,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:32:20,246 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:32:20,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:32:20,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:32:20,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:32:20,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:32:20" (1/1) ... [2020-08-19 03:32:20,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@256ae262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:20, skipping insertion in model container [2020-08-19 03:32:20,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:32:20" (1/1) ... [2020-08-19 03:32:20,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:32:20,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:32:20,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:32:20,492 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:32:20,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:32:20,522 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:32:20,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:20 WrapperNode [2020-08-19 03:32:20,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:32:20,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:32:20,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:32:20,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:32:20,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:20" (1/1) ... [2020-08-19 03:32:20,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:20" (1/1) ... [2020-08-19 03:32:20,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:20" (1/1) ... [2020-08-19 03:32:20,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:20" (1/1) ... [2020-08-19 03:32:20,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:20" (1/1) ... [2020-08-19 03:32:20,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:20" (1/1) ... [2020-08-19 03:32:20,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:20" (1/1) ... [2020-08-19 03:32:20,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:32:20,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:32:20,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:32:20,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:32:20,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:20" (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 03:32:20,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:32:20,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:32:20,703 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-08-19 03:32:20,703 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:32:20,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:32:20,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:32:20,704 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-08-19 03:32:20,704 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:32:20,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:32:20,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:32:20,904 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:32:20,904 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 03:32:20,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:32:20 BoogieIcfgContainer [2020-08-19 03:32:20,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:32:20,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:32:20,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:32:20,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:32:20,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:32:20" (1/3) ... [2020-08-19 03:32:20,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c0f1dc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:32:20, skipping insertion in model container [2020-08-19 03:32:20,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:20" (2/3) ... [2020-08-19 03:32:20,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c0f1dc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:32:20, skipping insertion in model container [2020-08-19 03:32:20,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:32:20" (3/3) ... [2020-08-19 03:32:20,918 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition03-1.c [2020-08-19 03:32:20,929 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:32:20,937 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:32:20,953 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:32:20,978 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:32:20,979 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:32:20,979 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:32:20,979 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:32:20,979 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:32:20,979 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:32:20,979 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:32:20,980 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:32:20,998 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-08-19 03:32:21,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-19 03:32:21,006 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:21,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:32:21,008 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:21,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:21,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1540493149, now seen corresponding path program 1 times [2020-08-19 03:32:21,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:21,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126065422] [2020-08-19 03:32:21,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:21,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:21,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:21,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:21,358 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 03:32:21,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126065422] [2020-08-19 03:32:21,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:32:21,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:32:21,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988248002] [2020-08-19 03:32:21,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:32:21,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:21,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:32:21,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:32:21,392 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-08-19 03:32:21,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:21,538 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2020-08-19 03:32:21,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:32:21,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-19 03:32:21,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:21,554 INFO L225 Difference]: With dead ends: 36 [2020-08-19 03:32:21,555 INFO L226 Difference]: Without dead ends: 22 [2020-08-19 03:32:21,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:32:21,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-08-19 03:32:21,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-08-19 03:32:21,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-19 03:32:21,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2020-08-19 03:32:21,615 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 13 [2020-08-19 03:32:21,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:21,616 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2020-08-19 03:32:21,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:32:21,617 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2020-08-19 03:32:21,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 03:32:21,619 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:21,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:32:21,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:32:21,620 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:21,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:21,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1700112874, now seen corresponding path program 1 times [2020-08-19 03:32:21,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:21,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165429784] [2020-08-19 03:32:21,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:21,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:21,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:21,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:21,690 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 03:32:21,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165429784] [2020-08-19 03:32:21,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:32:21,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:32:21,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138324317] [2020-08-19 03:32:21,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:32:21,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:21,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:32:21,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:32:21,694 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 4 states. [2020-08-19 03:32:21,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:21,727 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2020-08-19 03:32:21,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 03:32:21,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-08-19 03:32:21,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:21,729 INFO L225 Difference]: With dead ends: 32 [2020-08-19 03:32:21,729 INFO L226 Difference]: Without dead ends: 24 [2020-08-19 03:32:21,731 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 03:32:21,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-08-19 03:32:21,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-08-19 03:32:21,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-19 03:32:21,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-08-19 03:32:21,740 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2020-08-19 03:32:21,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:21,740 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-08-19 03:32:21,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:32:21,741 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-08-19 03:32:21,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 03:32:21,742 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:21,742 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 03:32:21,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:32:21,743 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:21,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:21,744 INFO L82 PathProgramCache]: Analyzing trace with hash -35294164, now seen corresponding path program 1 times [2020-08-19 03:32:21,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:21,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3433091] [2020-08-19 03:32:21,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:21,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:21,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:21,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:21,901 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 03:32:21,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3433091] [2020-08-19 03:32:21,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:21,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-19 03:32:21,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208486786] [2020-08-19 03:32:21,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:32:21,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:21,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:32:21,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:32:21,904 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 6 states. [2020-08-19 03:32:21,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:21,994 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-08-19 03:32:21,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 03:32:21,995 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-08-19 03:32:21,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:21,996 INFO L225 Difference]: With dead ends: 29 [2020-08-19 03:32:21,996 INFO L226 Difference]: Without dead ends: 25 [2020-08-19 03:32:21,997 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 03:32:21,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-19 03:32:22,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-19 03:32:22,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-19 03:32:22,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2020-08-19 03:32:22,005 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 20 [2020-08-19 03:32:22,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:22,006 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2020-08-19 03:32:22,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:32:22,006 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2020-08-19 03:32:22,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-19 03:32:22,008 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:22,008 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 03:32:22,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:32:22,008 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:22,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:22,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1261456781, now seen corresponding path program 2 times [2020-08-19 03:32:22,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:22,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602285498] [2020-08-19 03:32:22,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:22,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:22,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:22,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:22,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:22,162 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 03:32:22,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602285498] [2020-08-19 03:32:22,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:22,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 03:32:22,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962427558] [2020-08-19 03:32:22,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 03:32:22,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:22,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 03:32:22,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-19 03:32:22,166 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand 7 states. [2020-08-19 03:32:22,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:22,332 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2020-08-19 03:32:22,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 03:32:22,333 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-08-19 03:32:22,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:22,335 INFO L225 Difference]: With dead ends: 43 [2020-08-19 03:32:22,335 INFO L226 Difference]: Without dead ends: 39 [2020-08-19 03:32:22,336 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 03:32:22,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-08-19 03:32:22,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-08-19 03:32:22,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-19 03:32:22,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2020-08-19 03:32:22,351 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 27 [2020-08-19 03:32:22,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:22,353 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2020-08-19 03:32:22,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 03:32:22,354 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2020-08-19 03:32:22,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-19 03:32:22,360 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:22,360 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 03:32:22,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:32:22,361 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:22,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:22,361 INFO L82 PathProgramCache]: Analyzing trace with hash 2131329174, now seen corresponding path program 3 times [2020-08-19 03:32:22,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:22,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490600703] [2020-08-19 03:32:22,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:22,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:22,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:22,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:22,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:22,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:22,536 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 03:32:22,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490600703] [2020-08-19 03:32:22,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:22,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-19 03:32:22,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945709077] [2020-08-19 03:32:22,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:32:22,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:22,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:32:22,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:32:22,539 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand 8 states. [2020-08-19 03:32:22,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:22,697 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2020-08-19 03:32:22,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 03:32:22,698 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-08-19 03:32:22,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:22,700 INFO L225 Difference]: With dead ends: 46 [2020-08-19 03:32:22,700 INFO L226 Difference]: Without dead ends: 42 [2020-08-19 03:32:22,701 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 03:32:22,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-19 03:32:22,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-08-19 03:32:22,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-19 03:32:22,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 56 transitions. [2020-08-19 03:32:22,712 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 56 transitions. Word has length 34 [2020-08-19 03:32:22,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:22,713 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 56 transitions. [2020-08-19 03:32:22,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:32:22,713 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 56 transitions. [2020-08-19 03:32:22,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-19 03:32:22,718 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:22,718 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 03:32:22,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:32:22,718 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:22,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:22,722 INFO L82 PathProgramCache]: Analyzing trace with hash -867295607, now seen corresponding path program 4 times [2020-08-19 03:32:22,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:22,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028425343] [2020-08-19 03:32:22,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:22,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:22,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:22,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:22,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:22,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:22,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:22,940 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 03:32:22,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028425343] [2020-08-19 03:32:22,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:22,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 03:32:22,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748473300] [2020-08-19 03:32:22,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:32:22,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:22,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:32:22,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:32:22,942 INFO L87 Difference]: Start difference. First operand 42 states and 56 transitions. Second operand 9 states. [2020-08-19 03:32:23,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:23,115 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2020-08-19 03:32:23,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 03:32:23,115 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2020-08-19 03:32:23,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:23,117 INFO L225 Difference]: With dead ends: 49 [2020-08-19 03:32:23,117 INFO L226 Difference]: Without dead ends: 45 [2020-08-19 03:32:23,118 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 03:32:23,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-08-19 03:32:23,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-08-19 03:32:23,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-08-19 03:32:23,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2020-08-19 03:32:23,129 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 41 [2020-08-19 03:32:23,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:23,130 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2020-08-19 03:32:23,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:32:23,130 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2020-08-19 03:32:23,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-19 03:32:23,132 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:23,132 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 03:32:23,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:32:23,133 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:23,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:23,134 INFO L82 PathProgramCache]: Analyzing trace with hash -943688704, now seen corresponding path program 5 times [2020-08-19 03:32:23,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:23,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738397203] [2020-08-19 03:32:23,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:23,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:23,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:23,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:23,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:23,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:23,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:23,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:23,430 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 03:32:23,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738397203] [2020-08-19 03:32:23,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:23,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 03:32:23,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934770607] [2020-08-19 03:32:23,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 03:32:23,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:23,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 03:32:23,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:32:23,436 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand 10 states. [2020-08-19 03:32:23,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:23,597 INFO L93 Difference]: Finished difference Result 52 states and 66 transitions. [2020-08-19 03:32:23,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 03:32:23,598 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-08-19 03:32:23,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:23,599 INFO L225 Difference]: With dead ends: 52 [2020-08-19 03:32:23,599 INFO L226 Difference]: Without dead ends: 48 [2020-08-19 03:32:23,600 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 03:32:23,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-19 03:32:23,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-08-19 03:32:23,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-08-19 03:32:23,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2020-08-19 03:32:23,609 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 48 [2020-08-19 03:32:23,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:23,610 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2020-08-19 03:32:23,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 03:32:23,610 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2020-08-19 03:32:23,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-19 03:32:23,612 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:23,612 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 03:32:23,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 03:32:23,613 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:23,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:23,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1959654303, now seen corresponding path program 6 times [2020-08-19 03:32:23,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:23,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478965753] [2020-08-19 03:32:23,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:23,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:23,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:23,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:23,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:23,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:23,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:23,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:23,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:23,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:23,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:23,819 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 03:32:23,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478965753] [2020-08-19 03:32:23,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:23,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 03:32:23,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033346418] [2020-08-19 03:32:23,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 03:32:23,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:23,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 03:32:23,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-08-19 03:32:23,822 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand 11 states. [2020-08-19 03:32:24,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:24,034 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-08-19 03:32:24,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 03:32:24,036 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2020-08-19 03:32:24,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:24,038 INFO L225 Difference]: With dead ends: 55 [2020-08-19 03:32:24,038 INFO L226 Difference]: Without dead ends: 51 [2020-08-19 03:32:24,039 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 03:32:24,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-19 03:32:24,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-08-19 03:32:24,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-08-19 03:32:24,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2020-08-19 03:32:24,047 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 55 [2020-08-19 03:32:24,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:24,047 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2020-08-19 03:32:24,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 03:32:24,048 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2020-08-19 03:32:24,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-19 03:32:24,050 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:24,051 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 03:32:24,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 03:32:24,051 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:24,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:24,052 INFO L82 PathProgramCache]: Analyzing trace with hash 75083370, now seen corresponding path program 7 times [2020-08-19 03:32:24,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:24,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520998693] [2020-08-19 03:32:24,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:24,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:24,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:24,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:24,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:24,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:24,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:24,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:24,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:24,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:24,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:24,381 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 03:32:24,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520998693] [2020-08-19 03:32:24,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:24,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 03:32:24,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720475575] [2020-08-19 03:32:24,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 03:32:24,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:24,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 03:32:24,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:32:24,384 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand 12 states. [2020-08-19 03:32:24,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:24,558 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2020-08-19 03:32:24,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 03:32:24,559 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2020-08-19 03:32:24,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:24,560 INFO L225 Difference]: With dead ends: 58 [2020-08-19 03:32:24,560 INFO L226 Difference]: Without dead ends: 54 [2020-08-19 03:32:24,561 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 03:32:24,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-19 03:32:24,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-08-19 03:32:24,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-19 03:32:24,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-08-19 03:32:24,577 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 62 [2020-08-19 03:32:24,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:24,577 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-08-19 03:32:24,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 03:32:24,577 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-08-19 03:32:24,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-19 03:32:24,579 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:24,581 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 03:32:24,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 03:32:24,581 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:24,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:24,582 INFO L82 PathProgramCache]: Analyzing trace with hash 980406709, now seen corresponding path program 8 times [2020-08-19 03:32:24,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:24,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656192232] [2020-08-19 03:32:24,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:24,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:24,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:24,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:24,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:24,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:24,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:24,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:24,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:24,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:24,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:24,919 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 03:32:24,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656192232] [2020-08-19 03:32:24,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:24,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 03:32:24,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131763165] [2020-08-19 03:32:24,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 03:32:24,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:24,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 03:32:24,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-08-19 03:32:24,922 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 13 states. [2020-08-19 03:32:25,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:25,121 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2020-08-19 03:32:25,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 03:32:25,122 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 69 [2020-08-19 03:32:25,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:25,123 INFO L225 Difference]: With dead ends: 61 [2020-08-19 03:32:25,123 INFO L226 Difference]: Without dead ends: 57 [2020-08-19 03:32:25,124 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 03:32:25,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-19 03:32:25,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-08-19 03:32:25,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-08-19 03:32:25,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2020-08-19 03:32:25,133 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 69 [2020-08-19 03:32:25,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:25,133 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2020-08-19 03:32:25,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 03:32:25,133 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2020-08-19 03:32:25,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-08-19 03:32:25,135 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:25,135 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 03:32:25,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 03:32:25,135 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:25,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:25,136 INFO L82 PathProgramCache]: Analyzing trace with hash -654012460, now seen corresponding path program 9 times [2020-08-19 03:32:25,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:25,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691178463] [2020-08-19 03:32:25,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:25,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:25,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:25,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:25,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:25,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:25,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:25,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:25,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:25,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:25,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:25,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:25,448 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 03:32:25,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691178463] [2020-08-19 03:32:25,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:25,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 03:32:25,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107351776] [2020-08-19 03:32:25,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 03:32:25,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:25,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 03:32:25,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-08-19 03:32:25,451 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand 14 states. [2020-08-19 03:32:25,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:25,659 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2020-08-19 03:32:25,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 03:32:25,660 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 76 [2020-08-19 03:32:25,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:25,661 INFO L225 Difference]: With dead ends: 64 [2020-08-19 03:32:25,661 INFO L226 Difference]: Without dead ends: 60 [2020-08-19 03:32:25,664 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 03:32:25,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-08-19 03:32:25,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-08-19 03:32:25,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-19 03:32:25,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2020-08-19 03:32:25,676 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 76 [2020-08-19 03:32:25,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:25,678 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2020-08-19 03:32:25,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 03:32:25,679 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2020-08-19 03:32:25,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 03:32:25,683 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:25,683 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 03:32:25,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 03:32:25,683 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:25,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:25,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1057728309, now seen corresponding path program 10 times [2020-08-19 03:32:25,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:25,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485774800] [2020-08-19 03:32:25,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:25,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:25,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:25,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:25,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:25,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:25,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:25,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:26,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:26,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:26,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:26,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:26,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:26,180 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 03:32:26,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485774800] [2020-08-19 03:32:26,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:26,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 03:32:26,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053428504] [2020-08-19 03:32:26,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 03:32:26,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:26,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 03:32:26,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-08-19 03:32:26,183 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand 15 states. [2020-08-19 03:32:26,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:26,426 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2020-08-19 03:32:26,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 03:32:26,426 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 83 [2020-08-19 03:32:26,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:26,428 INFO L225 Difference]: With dead ends: 67 [2020-08-19 03:32:26,428 INFO L226 Difference]: Without dead ends: 63 [2020-08-19 03:32:26,429 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 03:32:26,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-08-19 03:32:26,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-08-19 03:32:26,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-08-19 03:32:26,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 77 transitions. [2020-08-19 03:32:26,437 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 77 transitions. Word has length 83 [2020-08-19 03:32:26,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:26,438 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 77 transitions. [2020-08-19 03:32:26,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 03:32:26,438 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 77 transitions. [2020-08-19 03:32:26,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-19 03:32:26,439 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:26,440 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 03:32:26,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 03:32:26,440 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:26,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:26,440 INFO L82 PathProgramCache]: Analyzing trace with hash -2104461250, now seen corresponding path program 11 times [2020-08-19 03:32:26,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:26,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704396959] [2020-08-19 03:32:26,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:26,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:26,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:26,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:26,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:26,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:26,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:26,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:26,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:26,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:26,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:26,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:26,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:26,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:26,874 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 03:32:26,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704396959] [2020-08-19 03:32:26,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:26,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 03:32:26,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970256902] [2020-08-19 03:32:26,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 03:32:26,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:26,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 03:32:26,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-08-19 03:32:26,877 INFO L87 Difference]: Start difference. First operand 63 states and 77 transitions. Second operand 16 states. [2020-08-19 03:32:27,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:27,157 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2020-08-19 03:32:27,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 03:32:27,157 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 90 [2020-08-19 03:32:27,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:27,158 INFO L225 Difference]: With dead ends: 70 [2020-08-19 03:32:27,159 INFO L226 Difference]: Without dead ends: 66 [2020-08-19 03:32:27,160 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 03:32:27,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-08-19 03:32:27,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-08-19 03:32:27,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-08-19 03:32:27,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2020-08-19 03:32:27,168 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 90 [2020-08-19 03:32:27,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:27,169 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2020-08-19 03:32:27,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 03:32:27,169 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2020-08-19 03:32:27,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-19 03:32:27,170 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:27,171 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 03:32:27,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 03:32:27,171 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:27,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:27,172 INFO L82 PathProgramCache]: Analyzing trace with hash 565979361, now seen corresponding path program 12 times [2020-08-19 03:32:27,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:27,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671567088] [2020-08-19 03:32:27,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:27,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:27,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:27,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:27,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:27,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:27,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:27,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:27,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:27,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:27,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:27,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:27,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:27,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:27,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:27,677 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 03:32:27,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671567088] [2020-08-19 03:32:27,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:27,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-19 03:32:27,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624347380] [2020-08-19 03:32:27,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-19 03:32:27,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:27,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-19 03:32:27,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-08-19 03:32:27,680 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand 17 states. [2020-08-19 03:32:27,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:27,918 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2020-08-19 03:32:27,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-19 03:32:27,919 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 97 [2020-08-19 03:32:27,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:27,920 INFO L225 Difference]: With dead ends: 73 [2020-08-19 03:32:27,920 INFO L226 Difference]: Without dead ends: 69 [2020-08-19 03:32:27,922 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 03:32:27,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-19 03:32:27,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-19 03:32:27,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-19 03:32:27,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 83 transitions. [2020-08-19 03:32:27,933 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 83 transitions. Word has length 97 [2020-08-19 03:32:27,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:27,934 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 83 transitions. [2020-08-19 03:32:27,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-19 03:32:27,934 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 83 transitions. [2020-08-19 03:32:27,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-19 03:32:27,937 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:27,937 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 03:32:27,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 03:32:27,938 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:27,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:27,938 INFO L82 PathProgramCache]: Analyzing trace with hash -106117208, now seen corresponding path program 13 times [2020-08-19 03:32:27,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:27,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230656741] [2020-08-19 03:32:27,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:28,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:28,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:28,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:28,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:28,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:28,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:28,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:28,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:28,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:28,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:28,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:28,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:28,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:28,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:28,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:28,562 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 03:32:28,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230656741] [2020-08-19 03:32:28,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:28,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-19 03:32:28,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755800521] [2020-08-19 03:32:28,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-19 03:32:28,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:28,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-19 03:32:28,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-08-19 03:32:28,564 INFO L87 Difference]: Start difference. First operand 69 states and 83 transitions. Second operand 18 states. [2020-08-19 03:32:28,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:28,826 INFO L93 Difference]: Finished difference Result 76 states and 90 transitions. [2020-08-19 03:32:28,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-19 03:32:28,826 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 104 [2020-08-19 03:32:28,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:28,827 INFO L225 Difference]: With dead ends: 76 [2020-08-19 03:32:28,828 INFO L226 Difference]: Without dead ends: 72 [2020-08-19 03:32:28,829 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 03:32:28,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-08-19 03:32:28,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-08-19 03:32:28,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-08-19 03:32:28,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2020-08-19 03:32:28,835 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 104 [2020-08-19 03:32:28,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:28,835 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2020-08-19 03:32:28,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-19 03:32:28,835 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2020-08-19 03:32:28,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-19 03:32:28,837 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:28,837 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 03:32:28,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-19 03:32:28,837 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:28,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:28,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1237836279, now seen corresponding path program 14 times [2020-08-19 03:32:28,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:28,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579023172] [2020-08-19 03:32:28,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:28,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:28,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:28,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:28,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:28,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:29,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:29,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:29,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:29,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:29,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:29,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:29,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:29,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:29,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:29,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:29,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:29,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:29,405 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 03:32:29,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [579023172] [2020-08-19 03:32:29,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:29,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 03:32:29,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527457172] [2020-08-19 03:32:29,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 03:32:29,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:29,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 03:32:29,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=202, Unknown=0, NotChecked=0, Total=342 [2020-08-19 03:32:29,408 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand 19 states. [2020-08-19 03:32:29,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:29,685 INFO L93 Difference]: Finished difference Result 79 states and 93 transitions. [2020-08-19 03:32:29,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 03:32:29,685 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 111 [2020-08-19 03:32:29,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:29,687 INFO L225 Difference]: With dead ends: 79 [2020-08-19 03:32:29,687 INFO L226 Difference]: Without dead ends: 75 [2020-08-19 03:32:29,689 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 03:32:29,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-08-19 03:32:29,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-08-19 03:32:29,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-19 03:32:29,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 89 transitions. [2020-08-19 03:32:29,698 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 89 transitions. Word has length 111 [2020-08-19 03:32:29,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:29,699 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 89 transitions. [2020-08-19 03:32:29,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 03:32:29,699 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 89 transitions. [2020-08-19 03:32:29,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-08-19 03:32:29,700 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:29,701 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 03:32:29,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-19 03:32:29,701 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:29,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:29,702 INFO L82 PathProgramCache]: Analyzing trace with hash 340319762, now seen corresponding path program 15 times [2020-08-19 03:32:29,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:29,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954469639] [2020-08-19 03:32:29,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:29,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:29,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:29,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:29,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:29,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:29,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:29,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:30,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:30,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:30,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:30,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:30,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:30,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:30,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:30,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:30,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:30,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:30,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:30,391 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 03:32:30,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954469639] [2020-08-19 03:32:30,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:30,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-08-19 03:32:30,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699764684] [2020-08-19 03:32:30,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-19 03:32:30,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:30,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-19 03:32:30,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=223, Unknown=0, NotChecked=0, Total=380 [2020-08-19 03:32:30,393 INFO L87 Difference]: Start difference. First operand 75 states and 89 transitions. Second operand 20 states. [2020-08-19 03:32:30,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:30,694 INFO L93 Difference]: Finished difference Result 82 states and 96 transitions. [2020-08-19 03:32:30,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 03:32:30,694 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 118 [2020-08-19 03:32:30,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:30,696 INFO L225 Difference]: With dead ends: 82 [2020-08-19 03:32:30,696 INFO L226 Difference]: Without dead ends: 78 [2020-08-19 03:32:30,697 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 03:32:30,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-08-19 03:32:30,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-08-19 03:32:30,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-19 03:32:30,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2020-08-19 03:32:30,706 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 118 [2020-08-19 03:32:30,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:30,708 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2020-08-19 03:32:30,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-19 03:32:30,708 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2020-08-19 03:32:30,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-08-19 03:32:30,711 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:30,711 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 03:32:30,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-19 03:32:30,711 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:30,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:30,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1471685645, now seen corresponding path program 16 times [2020-08-19 03:32:30,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:30,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882731397] [2020-08-19 03:32:30,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:30,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:30,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:30,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:30,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:30,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:30,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:30,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:30,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:31,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:31,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:31,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:31,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:31,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:31,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:31,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:31,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:31,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:31,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:31,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:31,568 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 03:32:31,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882731397] [2020-08-19 03:32:31,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:31,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-19 03:32:31,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973169082] [2020-08-19 03:32:31,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-19 03:32:31,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:31,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-19 03:32:31,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=245, Unknown=0, NotChecked=0, Total=420 [2020-08-19 03:32:31,580 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand 21 states. [2020-08-19 03:32:31,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:31,904 INFO L93 Difference]: Finished difference Result 85 states and 99 transitions. [2020-08-19 03:32:31,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 03:32:31,905 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 125 [2020-08-19 03:32:31,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:31,907 INFO L225 Difference]: With dead ends: 85 [2020-08-19 03:32:31,908 INFO L226 Difference]: Without dead ends: 81 [2020-08-19 03:32:31,909 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 03:32:31,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-08-19 03:32:31,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-08-19 03:32:31,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-08-19 03:32:31,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 95 transitions. [2020-08-19 03:32:31,917 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 95 transitions. Word has length 125 [2020-08-19 03:32:31,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:31,917 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 95 transitions. [2020-08-19 03:32:31,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-19 03:32:31,918 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 95 transitions. [2020-08-19 03:32:31,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-19 03:32:31,919 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:31,919 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 03:32:31,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-19 03:32:31,920 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:31,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:31,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1481368708, now seen corresponding path program 17 times [2020-08-19 03:32:31,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:31,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443414816] [2020-08-19 03:32:31,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:31,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:31,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:32,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:32,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:32,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:32,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:32,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:32,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:32,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:32,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:32,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:32,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:32,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:32,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:32,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:32,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:32,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:32,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:32,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:32,920 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 03:32:32,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443414816] [2020-08-19 03:32:32,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:32,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-19 03:32:32,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647593584] [2020-08-19 03:32:32,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-19 03:32:32,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:32,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-19 03:32:32,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=268, Unknown=0, NotChecked=0, Total=462 [2020-08-19 03:32:32,924 INFO L87 Difference]: Start difference. First operand 81 states and 95 transitions. Second operand 22 states. [2020-08-19 03:32:33,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:33,385 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2020-08-19 03:32:33,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 03:32:33,386 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 132 [2020-08-19 03:32:33,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:33,388 INFO L225 Difference]: With dead ends: 88 [2020-08-19 03:32:33,388 INFO L226 Difference]: Without dead ends: 84 [2020-08-19 03:32:33,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=572, Invalid=988, Unknown=0, NotChecked=0, Total=1560 [2020-08-19 03:32:33,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-08-19 03:32:33,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-08-19 03:32:33,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-08-19 03:32:33,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 98 transitions. [2020-08-19 03:32:33,398 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 98 transitions. Word has length 132 [2020-08-19 03:32:33,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:33,399 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 98 transitions. [2020-08-19 03:32:33,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-19 03:32:33,399 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 98 transitions. [2020-08-19 03:32:33,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-19 03:32:33,402 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:33,402 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 03:32:33,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-19 03:32:33,403 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:33,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:33,404 INFO L82 PathProgramCache]: Analyzing trace with hash -103968989, now seen corresponding path program 18 times [2020-08-19 03:32:33,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:33,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438235413] [2020-08-19 03:32:33,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:33,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:33,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:33,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:33,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:33,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:33,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:33,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:33,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:33,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:33,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:34,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:34,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:34,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:34,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:34,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:34,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:34,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:34,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:34,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:34,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:34,436 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 03:32:34,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438235413] [2020-08-19 03:32:34,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:34,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-08-19 03:32:34,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645353690] [2020-08-19 03:32:34,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-19 03:32:34,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:34,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-19 03:32:34,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=292, Unknown=0, NotChecked=0, Total=506 [2020-08-19 03:32:34,438 INFO L87 Difference]: Start difference. First operand 84 states and 98 transitions. Second operand 23 states. [2020-08-19 03:32:34,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:34,792 INFO L93 Difference]: Finished difference Result 91 states and 105 transitions. [2020-08-19 03:32:34,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 03:32:34,792 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 139 [2020-08-19 03:32:34,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:34,793 INFO L225 Difference]: With dead ends: 91 [2020-08-19 03:32:34,793 INFO L226 Difference]: Without dead ends: 87 [2020-08-19 03:32:34,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=632, Invalid=1090, Unknown=0, NotChecked=0, Total=1722 [2020-08-19 03:32:34,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-08-19 03:32:34,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-08-19 03:32:34,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-08-19 03:32:34,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 101 transitions. [2020-08-19 03:32:34,802 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 101 transitions. Word has length 139 [2020-08-19 03:32:34,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:34,802 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 101 transitions. [2020-08-19 03:32:34,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-19 03:32:34,803 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 101 transitions. [2020-08-19 03:32:34,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-19 03:32:34,804 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:34,804 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 03:32:34,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-19 03:32:34,805 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:34,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:34,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1432494106, now seen corresponding path program 19 times [2020-08-19 03:32:34,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:34,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972645588] [2020-08-19 03:32:34,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:34,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:34,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:34,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:34,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:35,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:35,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:35,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:35,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:35,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:35,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:35,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:35,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:35,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:35,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:35,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:35,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:35,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:35,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:35,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:35,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:35,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:35,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:35,786 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 03:32:35,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972645588] [2020-08-19 03:32:35,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:35,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-08-19 03:32:35,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960873673] [2020-08-19 03:32:35,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-08-19 03:32:35,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:35,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-08-19 03:32:35,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=317, Unknown=0, NotChecked=0, Total=552 [2020-08-19 03:32:35,789 INFO L87 Difference]: Start difference. First operand 87 states and 101 transitions. Second operand 24 states. [2020-08-19 03:32:36,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:36,182 INFO L93 Difference]: Finished difference Result 94 states and 108 transitions. [2020-08-19 03:32:36,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-19 03:32:36,183 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 146 [2020-08-19 03:32:36,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:36,185 INFO L225 Difference]: With dead ends: 94 [2020-08-19 03:32:36,186 INFO L226 Difference]: Without dead ends: 90 [2020-08-19 03:32:36,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=695, Invalid=1197, Unknown=0, NotChecked=0, Total=1892 [2020-08-19 03:32:36,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-08-19 03:32:36,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-08-19 03:32:36,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-08-19 03:32:36,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 104 transitions. [2020-08-19 03:32:36,195 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 104 transitions. Word has length 146 [2020-08-19 03:32:36,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:36,196 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 104 transitions. [2020-08-19 03:32:36,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-08-19 03:32:36,196 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 104 transitions. [2020-08-19 03:32:36,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-19 03:32:36,197 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:36,197 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 03:32:36,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-19 03:32:36,197 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:36,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:36,198 INFO L82 PathProgramCache]: Analyzing trace with hash -873938119, now seen corresponding path program 20 times [2020-08-19 03:32:36,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:36,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724883820] [2020-08-19 03:32:36,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:36,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:36,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:36,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:36,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:36,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:36,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:36,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:36,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:36,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:36,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:36,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:36,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:36,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:36,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:36,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:36,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:36,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:36,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:37,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:37,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:37,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:37,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:37,300 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 03:32:37,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724883820] [2020-08-19 03:32:37,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:37,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-08-19 03:32:37,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257507672] [2020-08-19 03:32:37,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-08-19 03:32:37,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:37,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-08-19 03:32:37,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=343, Unknown=0, NotChecked=0, Total=600 [2020-08-19 03:32:37,302 INFO L87 Difference]: Start difference. First operand 90 states and 104 transitions. Second operand 25 states. [2020-08-19 03:32:37,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:37,735 INFO L93 Difference]: Finished difference Result 97 states and 111 transitions. [2020-08-19 03:32:37,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-19 03:32:37,740 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 153 [2020-08-19 03:32:37,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:37,741 INFO L225 Difference]: With dead ends: 97 [2020-08-19 03:32:37,741 INFO L226 Difference]: Without dead ends: 93 [2020-08-19 03:32:37,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=761, Invalid=1309, Unknown=0, NotChecked=0, Total=2070 [2020-08-19 03:32:37,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-08-19 03:32:37,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-08-19 03:32:37,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-08-19 03:32:37,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 107 transitions. [2020-08-19 03:32:37,754 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 107 transitions. Word has length 153 [2020-08-19 03:32:37,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:37,756 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 107 transitions. [2020-08-19 03:32:37,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-08-19 03:32:37,757 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 107 transitions. [2020-08-19 03:32:37,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-19 03:32:37,758 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:37,759 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 03:32:37,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-19 03:32:37,759 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:37,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:37,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1461029712, now seen corresponding path program 21 times [2020-08-19 03:32:37,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:37,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058472151] [2020-08-19 03:32:37,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:37,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:37,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:37,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:37,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:38,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:38,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:38,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:38,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:38,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:38,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:38,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:38,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:38,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:38,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:38,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:38,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:38,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:38,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:38,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:38,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:38,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:38,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:38,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:38,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:38,866 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 03:32:38,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058472151] [2020-08-19 03:32:38,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:38,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-08-19 03:32:38,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602818659] [2020-08-19 03:32:38,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-08-19 03:32:38,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:38,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-08-19 03:32:38,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=370, Unknown=0, NotChecked=0, Total=650 [2020-08-19 03:32:38,869 INFO L87 Difference]: Start difference. First operand 93 states and 107 transitions. Second operand 26 states. [2020-08-19 03:32:39,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:39,291 INFO L93 Difference]: Finished difference Result 100 states and 114 transitions. [2020-08-19 03:32:39,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-19 03:32:39,291 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 160 [2020-08-19 03:32:39,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:39,292 INFO L225 Difference]: With dead ends: 100 [2020-08-19 03:32:39,292 INFO L226 Difference]: Without dead ends: 96 [2020-08-19 03:32:39,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=830, Invalid=1426, Unknown=0, NotChecked=0, Total=2256 [2020-08-19 03:32:39,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-08-19 03:32:39,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-08-19 03:32:39,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-19 03:32:39,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-08-19 03:32:39,300 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 160 [2020-08-19 03:32:39,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:39,300 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-08-19 03:32:39,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-08-19 03:32:39,301 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-08-19 03:32:39,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-08-19 03:32:39,302 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:39,302 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 03:32:39,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-19 03:32:39,302 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:39,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:39,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1249222577, now seen corresponding path program 22 times [2020-08-19 03:32:39,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:39,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615346376] [2020-08-19 03:32:39,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:39,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:39,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:39,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:39,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:39,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:39,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:39,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:39,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:39,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:39,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:39,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:39,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:39,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:39,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:39,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:39,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:39,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:40,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:40,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:40,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:40,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:40,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:40,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:40,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:40,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:40,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:40,420 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 03:32:40,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615346376] [2020-08-19 03:32:40,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:40,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-08-19 03:32:40,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740501996] [2020-08-19 03:32:40,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-08-19 03:32:40,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:40,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-08-19 03:32:40,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=398, Unknown=0, NotChecked=0, Total=702 [2020-08-19 03:32:40,423 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 27 states. [2020-08-19 03:32:40,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:40,865 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2020-08-19 03:32:40,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-19 03:32:40,865 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 167 [2020-08-19 03:32:40,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:40,867 INFO L225 Difference]: With dead ends: 103 [2020-08-19 03:32:40,867 INFO L226 Difference]: Without dead ends: 99 [2020-08-19 03:32:40,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=902, Invalid=1548, Unknown=0, NotChecked=0, Total=2450 [2020-08-19 03:32:40,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-19 03:32:40,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-08-19 03:32:40,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-08-19 03:32:40,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 113 transitions. [2020-08-19 03:32:40,876 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 113 transitions. Word has length 167 [2020-08-19 03:32:40,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:40,877 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 113 transitions. [2020-08-19 03:32:40,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-08-19 03:32:40,877 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 113 transitions. [2020-08-19 03:32:40,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-08-19 03:32:40,878 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:40,878 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 03:32:40,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-19 03:32:40,882 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:40,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:40,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1284144570, now seen corresponding path program 23 times [2020-08-19 03:32:40,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:40,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609719510] [2020-08-19 03:32:40,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:40,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:40,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:40,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:41,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:41,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:41,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:41,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:41,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:41,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:41,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:41,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:41,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:41,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:41,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:41,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:41,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:41,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:41,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:41,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:41,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:41,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:41,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:41,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:41,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:41,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:41,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:41,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:42,148 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 03:32:42,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609719510] [2020-08-19 03:32:42,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:42,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-19 03:32:42,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89055294] [2020-08-19 03:32:42,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-19 03:32:42,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:42,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-19 03:32:42,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=427, Unknown=0, NotChecked=0, Total=756 [2020-08-19 03:32:42,150 INFO L87 Difference]: Start difference. First operand 99 states and 113 transitions. Second operand 28 states. [2020-08-19 03:32:42,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:42,613 INFO L93 Difference]: Finished difference Result 106 states and 120 transitions. [2020-08-19 03:32:42,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-19 03:32:42,613 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 174 [2020-08-19 03:32:42,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:42,615 INFO L225 Difference]: With dead ends: 106 [2020-08-19 03:32:42,615 INFO L226 Difference]: Without dead ends: 102 [2020-08-19 03:32:42,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=977, Invalid=1675, Unknown=0, NotChecked=0, Total=2652 [2020-08-19 03:32:42,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-08-19 03:32:42,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-08-19 03:32:42,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-08-19 03:32:42,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 116 transitions. [2020-08-19 03:32:42,621 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 116 transitions. Word has length 174 [2020-08-19 03:32:42,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:42,621 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 116 transitions. [2020-08-19 03:32:42,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-19 03:32:42,622 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 116 transitions. [2020-08-19 03:32:42,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-08-19 03:32:42,623 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:42,623 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 03:32:42,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-19 03:32:42,623 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:42,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:42,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1205012069, now seen corresponding path program 24 times [2020-08-19 03:32:42,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:42,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815743836] [2020-08-19 03:32:42,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:42,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:42,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:42,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:42,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:42,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:42,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:42,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:42,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:42,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:43,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:43,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:43,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:43,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:43,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:43,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:43,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:43,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:43,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:43,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:43,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:43,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:43,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:43,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:43,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:43,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:43,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:43,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:43,890 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 03:32:43,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815743836] [2020-08-19 03:32:43,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:43,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-08-19 03:32:43,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001440401] [2020-08-19 03:32:43,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-08-19 03:32:43,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:43,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-08-19 03:32:43,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=457, Unknown=0, NotChecked=0, Total=812 [2020-08-19 03:32:43,892 INFO L87 Difference]: Start difference. First operand 102 states and 116 transitions. Second operand 29 states. [2020-08-19 03:32:44,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:44,353 INFO L93 Difference]: Finished difference Result 109 states and 123 transitions. [2020-08-19 03:32:44,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-19 03:32:44,354 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 181 [2020-08-19 03:32:44,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:44,356 INFO L225 Difference]: With dead ends: 109 [2020-08-19 03:32:44,356 INFO L226 Difference]: Without dead ends: 105 [2020-08-19 03:32:44,358 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 03:32:44,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-08-19 03:32:44,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-08-19 03:32:44,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-19 03:32:44,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 119 transitions. [2020-08-19 03:32:44,363 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 119 transitions. Word has length 181 [2020-08-19 03:32:44,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:44,363 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 119 transitions. [2020-08-19 03:32:44,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-08-19 03:32:44,364 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 119 transitions. [2020-08-19 03:32:44,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-08-19 03:32:44,365 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:44,365 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 03:32:44,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-19 03:32:44,365 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:44,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:44,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1312024796, now seen corresponding path program 25 times [2020-08-19 03:32:44,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:44,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937296412] [2020-08-19 03:32:44,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:44,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:44,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:44,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:44,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:44,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:44,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:44,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:44,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:44,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:44,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:44,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:44,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:44,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:44,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:44,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:45,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:45,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:45,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:45,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:45,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:45,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:45,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:45,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:45,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:45,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:45,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:45,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:45,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:45,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:45,837 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 03:32:45,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937296412] [2020-08-19 03:32:45,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:45,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-08-19 03:32:45,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011870853] [2020-08-19 03:32:45,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-08-19 03:32:45,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:45,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-08-19 03:32:45,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=488, Unknown=0, NotChecked=0, Total=870 [2020-08-19 03:32:45,839 INFO L87 Difference]: Start difference. First operand 105 states and 119 transitions. Second operand 30 states. [2020-08-19 03:32:46,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:46,362 INFO L93 Difference]: Finished difference Result 112 states and 126 transitions. [2020-08-19 03:32:46,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 03:32:46,362 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 188 [2020-08-19 03:32:46,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:46,365 INFO L225 Difference]: With dead ends: 112 [2020-08-19 03:32:46,365 INFO L226 Difference]: Without dead ends: 108 [2020-08-19 03:32:46,366 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 03:32:46,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-08-19 03:32:46,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-08-19 03:32:46,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-08-19 03:32:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 122 transitions. [2020-08-19 03:32:46,372 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 122 transitions. Word has length 188 [2020-08-19 03:32:46,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:46,372 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 122 transitions. [2020-08-19 03:32:46,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-08-19 03:32:46,373 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 122 transitions. [2020-08-19 03:32:46,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-08-19 03:32:46,374 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:46,374 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 03:32:46,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-19 03:32:46,374 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:46,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:46,375 INFO L82 PathProgramCache]: Analyzing trace with hash 461591931, now seen corresponding path program 26 times [2020-08-19 03:32:46,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:46,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031118099] [2020-08-19 03:32:46,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:46,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:46,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:46,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:46,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:46,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:46,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:46,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:46,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:46,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:46,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:46,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:46,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:46,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:46,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:47,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:47,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:47,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:47,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:47,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:47,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:47,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:47,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:47,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:47,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:47,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:47,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:47,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:47,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:47,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:47,767 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 03:32:47,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031118099] [2020-08-19 03:32:47,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:47,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-08-19 03:32:47,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325396667] [2020-08-19 03:32:47,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-08-19 03:32:47,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:47,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-08-19 03:32:47,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=520, Unknown=0, NotChecked=0, Total=930 [2020-08-19 03:32:47,769 INFO L87 Difference]: Start difference. First operand 108 states and 122 transitions. Second operand 31 states. [2020-08-19 03:32:48,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:48,304 INFO L93 Difference]: Finished difference Result 115 states and 129 transitions. [2020-08-19 03:32:48,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-08-19 03:32:48,305 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 195 [2020-08-19 03:32:48,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:48,306 INFO L225 Difference]: With dead ends: 115 [2020-08-19 03:32:48,310 INFO L226 Difference]: Without dead ends: 111 [2020-08-19 03:32:48,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1220, Invalid=2086, Unknown=0, NotChecked=0, Total=3306 [2020-08-19 03:32:48,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-08-19 03:32:48,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-08-19 03:32:48,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-19 03:32:48,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 125 transitions. [2020-08-19 03:32:48,317 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 125 transitions. Word has length 195 [2020-08-19 03:32:48,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:48,317 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 125 transitions. [2020-08-19 03:32:48,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-08-19 03:32:48,317 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 125 transitions. [2020-08-19 03:32:48,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-08-19 03:32:48,322 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:48,322 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 03:32:48,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-19 03:32:48,322 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:48,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:48,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1460254606, now seen corresponding path program 27 times [2020-08-19 03:32:48,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:48,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271527578] [2020-08-19 03:32:48,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:48,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:48,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:48,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:48,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:48,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:48,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:48,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:48,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:48,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:48,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:48,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:48,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:48,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:48,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:48,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:48,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:49,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:49,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:49,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:49,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:49,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:49,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:49,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:49,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:49,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:49,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:49,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:49,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:49,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:49,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:49,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:49,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:49,820 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 03:32:49,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271527578] [2020-08-19 03:32:49,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:49,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-08-19 03:32:49,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604106466] [2020-08-19 03:32:49,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-08-19 03:32:49,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:49,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-08-19 03:32:49,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=553, Unknown=0, NotChecked=0, Total=992 [2020-08-19 03:32:49,823 INFO L87 Difference]: Start difference. First operand 111 states and 125 transitions. Second operand 32 states. [2020-08-19 03:32:50,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:50,404 INFO L93 Difference]: Finished difference Result 118 states and 132 transitions. [2020-08-19 03:32:50,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-19 03:32:50,405 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 202 [2020-08-19 03:32:50,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:50,406 INFO L225 Difference]: With dead ends: 118 [2020-08-19 03:32:50,406 INFO L226 Difference]: Without dead ends: 114 [2020-08-19 03:32:50,409 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 03:32:50,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-08-19 03:32:50,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-08-19 03:32:50,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-19 03:32:50,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 128 transitions. [2020-08-19 03:32:50,415 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 128 transitions. Word has length 202 [2020-08-19 03:32:50,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:50,415 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 128 transitions. [2020-08-19 03:32:50,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-08-19 03:32:50,415 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 128 transitions. [2020-08-19 03:32:50,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-08-19 03:32:50,417 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:50,417 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 03:32:50,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-19 03:32:50,417 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:50,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:50,418 INFO L82 PathProgramCache]: Analyzing trace with hash 788262289, now seen corresponding path program 28 times [2020-08-19 03:32:50,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:50,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178149258] [2020-08-19 03:32:50,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:50,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:50,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:50,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:50,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:50,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:50,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:50,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:50,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:50,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:50,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:50,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:51,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:51,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:51,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:51,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:51,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:51,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:51,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:51,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:51,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:51,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:51,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:51,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:51,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:51,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:51,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:51,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:51,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:51,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:51,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:51,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:51,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:52,145 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 03:32:52,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178149258] [2020-08-19 03:32:52,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:52,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-08-19 03:32:52,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058984183] [2020-08-19 03:32:52,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-08-19 03:32:52,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:52,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-08-19 03:32:52,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=587, Unknown=0, NotChecked=0, Total=1056 [2020-08-19 03:32:52,147 INFO L87 Difference]: Start difference. First operand 114 states and 128 transitions. Second operand 33 states. [2020-08-19 03:32:52,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:52,739 INFO L93 Difference]: Finished difference Result 121 states and 135 transitions. [2020-08-19 03:32:52,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-08-19 03:32:52,740 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 209 [2020-08-19 03:32:52,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:52,741 INFO L225 Difference]: With dead ends: 121 [2020-08-19 03:32:52,741 INFO L226 Difference]: Without dead ends: 117 [2020-08-19 03:32:52,743 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 03:32:52,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-08-19 03:32:52,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-08-19 03:32:52,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-19 03:32:52,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 131 transitions. [2020-08-19 03:32:52,749 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 131 transitions. Word has length 209 [2020-08-19 03:32:52,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:52,750 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 131 transitions. [2020-08-19 03:32:52,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-08-19 03:32:52,750 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 131 transitions. [2020-08-19 03:32:52,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-08-19 03:32:52,752 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:52,752 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 03:32:52,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-19 03:32:52,752 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:52,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:52,753 INFO L82 PathProgramCache]: Analyzing trace with hash -674054408, now seen corresponding path program 29 times [2020-08-19 03:32:52,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:52,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660535503] [2020-08-19 03:32:52,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:52,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:52,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:52,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:52,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:53,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:53,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:53,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:53,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:53,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:53,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:53,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:53,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:53,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:53,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:53,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:53,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:53,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:53,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:53,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:53,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:53,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:53,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:53,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:53,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:53,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:53,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:53,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:53,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:54,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:54,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:54,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:54,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:54,633 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 03:32:54,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660535503] [2020-08-19 03:32:54,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:54,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-08-19 03:32:54,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652581365] [2020-08-19 03:32:54,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-08-19 03:32:54,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:54,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-08-19 03:32:54,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=622, Unknown=0, NotChecked=0, Total=1122 [2020-08-19 03:32:54,635 INFO L87 Difference]: Start difference. First operand 117 states and 131 transitions. Second operand 34 states. [2020-08-19 03:32:55,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:55,270 INFO L93 Difference]: Finished difference Result 124 states and 138 transitions. [2020-08-19 03:32:55,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-19 03:32:55,271 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 216 [2020-08-19 03:32:55,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:55,273 INFO L225 Difference]: With dead ends: 124 [2020-08-19 03:32:55,273 INFO L226 Difference]: Without dead ends: 120 [2020-08-19 03:32:55,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1490, Invalid=2542, Unknown=0, NotChecked=0, Total=4032 [2020-08-19 03:32:55,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-08-19 03:32:55,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-08-19 03:32:55,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-19 03:32:55,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 134 transitions. [2020-08-19 03:32:55,281 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 134 transitions. Word has length 216 [2020-08-19 03:32:55,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:55,282 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 134 transitions. [2020-08-19 03:32:55,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-08-19 03:32:55,282 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 134 transitions. [2020-08-19 03:32:55,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-08-19 03:32:55,284 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:55,284 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 03:32:55,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-08-19 03:32:55,285 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:55,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:55,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1144876711, now seen corresponding path program 30 times [2020-08-19 03:32:55,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:55,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583361152] [2020-08-19 03:32:55,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:55,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:55,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:55,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:55,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:55,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:55,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:55,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:55,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:55,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:55,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:55,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:55,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:55,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:56,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:56,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:56,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:56,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:56,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:56,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:56,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:56,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:56,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:56,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:56,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:56,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:56,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:56,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:56,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:56,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:56,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:56,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:56,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:56,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:56,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:56,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:56,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:57,246 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 03:32:57,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583361152] [2020-08-19 03:32:57,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:57,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-08-19 03:32:57,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341667670] [2020-08-19 03:32:57,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-08-19 03:32:57,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:57,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-08-19 03:32:57,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=658, Unknown=0, NotChecked=0, Total=1190 [2020-08-19 03:32:57,248 INFO L87 Difference]: Start difference. First operand 120 states and 134 transitions. Second operand 35 states. [2020-08-19 03:32:57,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:57,886 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2020-08-19 03:32:57,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-19 03:32:57,887 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 223 [2020-08-19 03:32:57,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:57,888 INFO L225 Difference]: With dead ends: 127 [2020-08-19 03:32:57,888 INFO L226 Difference]: Without dead ends: 123 [2020-08-19 03:32:57,891 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 03:32:57,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-08-19 03:32:57,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-08-19 03:32:57,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-19 03:32:57,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 137 transitions. [2020-08-19 03:32:57,898 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 137 transitions. Word has length 223 [2020-08-19 03:32:57,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:57,899 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 137 transitions. [2020-08-19 03:32:57,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-08-19 03:32:57,899 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 137 transitions. [2020-08-19 03:32:57,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-08-19 03:32:57,900 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:57,901 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 03:32:57,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-08-19 03:32:57,901 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:57,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:57,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1122595486, now seen corresponding path program 31 times [2020-08-19 03:32:57,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:57,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706216101] [2020-08-19 03:32:57,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:57,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:57,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:32:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:58,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:58,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:58,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:58,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:58,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:58,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:58,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:58,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:58,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:58,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:58,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:58,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:58,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:58,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:58,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:58,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:59,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:59,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:59,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:59,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:59,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:59,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:59,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:59,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:59,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:59,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:59,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:59,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:59,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:59,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:59,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:32:59,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:59,984 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 03:32:59,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706216101] [2020-08-19 03:32:59,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:32:59,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-08-19 03:32:59,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919534402] [2020-08-19 03:32:59,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-08-19 03:32:59,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:59,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-08-19 03:32:59,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=695, Unknown=0, NotChecked=0, Total=1260 [2020-08-19 03:32:59,986 INFO L87 Difference]: Start difference. First operand 123 states and 137 transitions. Second operand 36 states. [2020-08-19 03:33:00,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:33:00,650 INFO L93 Difference]: Finished difference Result 130 states and 144 transitions. [2020-08-19 03:33:00,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-19 03:33:00,651 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 230 [2020-08-19 03:33:00,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:33:00,653 INFO L225 Difference]: With dead ends: 130 [2020-08-19 03:33:00,653 INFO L226 Difference]: Without dead ends: 126 [2020-08-19 03:33:00,655 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 03:33:00,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-08-19 03:33:00,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-08-19 03:33:00,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-19 03:33:00,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 140 transitions. [2020-08-19 03:33:00,660 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 140 transitions. Word has length 230 [2020-08-19 03:33:00,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:33:00,661 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 140 transitions. [2020-08-19 03:33:00,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-08-19 03:33:00,661 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 140 transitions. [2020-08-19 03:33:00,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-08-19 03:33:00,662 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:33:00,663 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 03:33:00,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-08-19 03:33:00,663 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:33:00,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:33:00,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1055422653, now seen corresponding path program 32 times [2020-08-19 03:33:00,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:33:00,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425344414] [2020-08-19 03:33:00,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:33:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:00,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:33:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:00,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:33:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:00,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:00,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:00,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:00,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:01,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:01,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:01,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:01,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:01,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:01,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:01,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:01,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:01,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:01,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:01,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:01,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:01,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:01,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:01,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:01,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:01,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:01,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:01,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:01,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:01,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:02,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:02,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:02,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:02,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:02,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:02,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:02,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:02,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:02,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:02,782 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 03:33:02,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425344414] [2020-08-19 03:33:02,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:33:02,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-08-19 03:33:02,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380039119] [2020-08-19 03:33:02,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-08-19 03:33:02,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:33:02,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-08-19 03:33:02,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=733, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 03:33:02,784 INFO L87 Difference]: Start difference. First operand 126 states and 140 transitions. Second operand 37 states. [2020-08-19 03:33:03,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:33:03,465 INFO L93 Difference]: Finished difference Result 133 states and 147 transitions. [2020-08-19 03:33:03,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-08-19 03:33:03,466 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 237 [2020-08-19 03:33:03,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:33:03,468 INFO L225 Difference]: With dead ends: 133 [2020-08-19 03:33:03,468 INFO L226 Difference]: Without dead ends: 129 [2020-08-19 03:33:03,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1787, Invalid=3043, Unknown=0, NotChecked=0, Total=4830 [2020-08-19 03:33:03,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-08-19 03:33:03,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2020-08-19 03:33:03,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-19 03:33:03,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 143 transitions. [2020-08-19 03:33:03,476 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 143 transitions. Word has length 237 [2020-08-19 03:33:03,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:33:03,477 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 143 transitions. [2020-08-19 03:33:03,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-08-19 03:33:03,477 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 143 transitions. [2020-08-19 03:33:03,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-08-19 03:33:03,479 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:33:03,479 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 03:33:03,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-08-19 03:33:03,479 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:33:03,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:33:03,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1624997172, now seen corresponding path program 33 times [2020-08-19 03:33:03,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:33:03,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282043978] [2020-08-19 03:33:03,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:33:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:03,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:33:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:03,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:33:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:03,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:03,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:03,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:03,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:04,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:04,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:04,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:04,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:04,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:04,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:04,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:04,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:04,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:04,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:04,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:04,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:04,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:04,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:04,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:04,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:04,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:04,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:04,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:04,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:04,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:05,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:05,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:05,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:05,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:05,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:05,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:05,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:05,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:05,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:05,845 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 03:33:05,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282043978] [2020-08-19 03:33:05,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:33:05,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-08-19 03:33:05,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771793544] [2020-08-19 03:33:05,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-08-19 03:33:05,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:33:05,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-08-19 03:33:05,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=634, Invalid=772, Unknown=0, NotChecked=0, Total=1406 [2020-08-19 03:33:05,848 INFO L87 Difference]: Start difference. First operand 129 states and 143 transitions. Second operand 38 states. [2020-08-19 03:33:06,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:33:06,589 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2020-08-19 03:33:06,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-08-19 03:33:06,590 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 244 [2020-08-19 03:33:06,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:33:06,592 INFO L225 Difference]: With dead ends: 136 [2020-08-19 03:33:06,592 INFO L226 Difference]: Without dead ends: 132 [2020-08-19 03:33:06,593 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 03:33:06,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-08-19 03:33:06,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-08-19 03:33:06,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-19 03:33:06,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 146 transitions. [2020-08-19 03:33:06,599 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 146 transitions. Word has length 244 [2020-08-19 03:33:06,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:33:06,600 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 146 transitions. [2020-08-19 03:33:06,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-08-19 03:33:06,600 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 146 transitions. [2020-08-19 03:33:06,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-08-19 03:33:06,602 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:33:06,602 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 03:33:06,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-08-19 03:33:06,603 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:33:06,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:33:06,603 INFO L82 PathProgramCache]: Analyzing trace with hash -2109887533, now seen corresponding path program 34 times [2020-08-19 03:33:06,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:33:06,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952123447] [2020-08-19 03:33:06,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:33:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:06,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:33:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:06,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:33:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:06,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:06,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:06,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:07,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:07,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:07,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:07,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:07,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:07,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:07,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:07,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:07,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:07,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:07,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:07,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:07,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:07,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:07,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:07,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:07,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:08,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:08,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:08,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:08,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:08,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:08,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:08,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:08,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:08,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:08,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:08,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:08,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:08,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:08,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:09,117 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 03:33:09,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952123447] [2020-08-19 03:33:09,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:33:09,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-08-19 03:33:09,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797114606] [2020-08-19 03:33:09,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-08-19 03:33:09,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:33:09,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-08-19 03:33:09,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=670, Invalid=812, Unknown=0, NotChecked=0, Total=1482 [2020-08-19 03:33:09,119 INFO L87 Difference]: Start difference. First operand 132 states and 146 transitions. Second operand 39 states. [2020-08-19 03:33:09,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:33:09,838 INFO L93 Difference]: Finished difference Result 139 states and 153 transitions. [2020-08-19 03:33:09,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-19 03:33:09,838 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 251 [2020-08-19 03:33:09,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:33:09,840 INFO L225 Difference]: With dead ends: 139 [2020-08-19 03:33:09,840 INFO L226 Difference]: Without dead ends: 135 [2020-08-19 03:33:09,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2000, Invalid=3402, Unknown=0, NotChecked=0, Total=5402 [2020-08-19 03:33:09,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-19 03:33:09,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2020-08-19 03:33:09,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-08-19 03:33:09,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 149 transitions. [2020-08-19 03:33:09,851 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 149 transitions. Word has length 251 [2020-08-19 03:33:09,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:33:09,852 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 149 transitions. [2020-08-19 03:33:09,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-08-19 03:33:09,852 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 149 transitions. [2020-08-19 03:33:09,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-08-19 03:33:09,853 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:33:09,853 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 03:33:09,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-08-19 03:33:09,854 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:33:09,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:33:09,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1202454326, now seen corresponding path program 35 times [2020-08-19 03:33:09,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:33:09,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144284600] [2020-08-19 03:33:09,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:33:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:09,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:33:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:09,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:33:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:10,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:10,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:10,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:10,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:10,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:10,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:10,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:10,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:10,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:10,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:10,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:10,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:10,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:10,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:10,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:10,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:10,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:11,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:11,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:11,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:11,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:11,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:11,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:11,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:11,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:11,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:11,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:11,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:11,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:11,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:11,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:11,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:11,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:11,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:11,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:11,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:12,380 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 03:33:12,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144284600] [2020-08-19 03:33:12,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:33:12,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-08-19 03:33:12,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436554052] [2020-08-19 03:33:12,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-08-19 03:33:12,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:33:12,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-08-19 03:33:12,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=853, Unknown=0, NotChecked=0, Total=1560 [2020-08-19 03:33:12,383 INFO L87 Difference]: Start difference. First operand 135 states and 149 transitions. Second operand 40 states. [2020-08-19 03:33:13,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:33:13,140 INFO L93 Difference]: Finished difference Result 142 states and 156 transitions. [2020-08-19 03:33:13,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-19 03:33:13,141 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 258 [2020-08-19 03:33:13,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:33:13,143 INFO L225 Difference]: With dead ends: 142 [2020-08-19 03:33:13,143 INFO L226 Difference]: Without dead ends: 138 [2020-08-19 03:33:13,144 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 03:33:13,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-19 03:33:13,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-08-19 03:33:13,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-19 03:33:13,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 152 transitions. [2020-08-19 03:33:13,152 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 152 transitions. Word has length 258 [2020-08-19 03:33:13,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:33:13,152 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 152 transitions. [2020-08-19 03:33:13,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-08-19 03:33:13,152 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 152 transitions. [2020-08-19 03:33:13,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-08-19 03:33:13,154 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:33:13,154 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 03:33:13,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-08-19 03:33:13,154 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:33:13,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:33:13,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1327343593, now seen corresponding path program 36 times [2020-08-19 03:33:13,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:33:13,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629899049] [2020-08-19 03:33:13,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:33:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:13,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:33:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:13,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:33:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:13,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:13,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:13,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:13,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:13,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:13,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:13,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:13,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:13,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:13,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:13,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:14,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:14,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:14,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:14,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:14,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:14,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:14,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:14,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:14,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:14,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:14,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:14,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:14,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:14,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:14,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:14,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:14,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:14,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:14,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:14,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:15,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:15,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:15,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:15,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:15,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:15,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 03:33:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:15,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 0 proven. 1962 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2020-08-19 03:33:15,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629899049] [2020-08-19 03:33:15,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:33:15,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-08-19 03:33:15,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216686526] [2020-08-19 03:33:15,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-08-19 03:33:15,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:33:15,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-08-19 03:33:15,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=745, Invalid=895, Unknown=0, NotChecked=0, Total=1640 [2020-08-19 03:33:15,820 INFO L87 Difference]: Start difference. First operand 138 states and 152 transitions. Second operand 41 states. [2020-08-19 03:33:16,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:33:16,666 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2020-08-19 03:33:16,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-19 03:33:16,666 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 265 [2020-08-19 03:33:16,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:33:16,668 INFO L225 Difference]: With dead ends: 145 [2020-08-19 03:33:16,668 INFO L226 Difference]: Without dead ends: 141 [2020-08-19 03:33:16,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1296 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2225, Invalid=3781, Unknown=0, NotChecked=0, Total=6006 [2020-08-19 03:33:16,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-19 03:33:16,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2020-08-19 03:33:16,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-08-19 03:33:16,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 155 transitions. [2020-08-19 03:33:16,679 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 155 transitions. Word has length 265 [2020-08-19 03:33:16,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:33:16,680 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 155 transitions. [2020-08-19 03:33:16,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-08-19 03:33:16,680 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 155 transitions. [2020-08-19 03:33:16,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-08-19 03:33:16,682 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:33:16,683 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:33:16,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-08-19 03:33:16,683 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:33:16,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:33:16,684 INFO L82 PathProgramCache]: Analyzing trace with hash -742628704, now seen corresponding path program 37 times [2020-08-19 03:33:16,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:33:16,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771387974] [2020-08-19 03:33:16,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:33:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:16,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:33:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:33:16,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:33:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat