/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 produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/MultCommutative-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:19:32,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:19:32,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:19:32,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:19:32,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:19:32,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:19:32,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:19:32,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:19:32,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:19:32,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:19:32,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:19:32,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:19:32,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:19:33,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:19:33,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:19:33,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:19:33,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:19:33,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:19:33,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:19:33,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:19:33,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:19:33,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:19:33,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:19:33,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:19:33,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:19:33,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:19:33,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:19:33,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:19:33,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:19:33,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:19:33,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:19:33,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:19:33,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:19:33,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:19:33,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:19:33,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:19:33,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:19:33,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:19:33,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:19:33,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:19:33,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:19:33,067 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 [2020-09-21 11:19:33,116 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:19:33,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:19:33,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:19:33,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:19:33,119 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:19:33,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:19:33,120 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:19:33,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:19:33,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:19:33,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:19:33,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:19:33,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:19:33,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:19:33,123 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:19:33,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:19:33,124 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:19:33,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:19:33,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:19:33,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:19:33,125 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:19:33,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:19:33,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:19:33,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:19:33,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:19:33,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:19:33,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:19:33,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:19:33,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:19:33,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:19:33,127 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 -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:19:33,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:19:33,658 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:19:33,663 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:19:33,665 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:19:33,665 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:19:33,667 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-09-21 11:19:33,748 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61b0b09bc/535c5d2b2d354a92b1377117f84accdc/FLAG5878111ce [2020-09-21 11:19:34,344 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:19:34,345 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-09-21 11:19:34,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61b0b09bc/535c5d2b2d354a92b1377117f84accdc/FLAG5878111ce [2020-09-21 11:19:34,676 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61b0b09bc/535c5d2b2d354a92b1377117f84accdc [2020-09-21 11:19:34,690 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:19:34,695 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:19:34,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:19:34,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:19:34,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:19:34,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:19:34" (1/1) ... [2020-09-21 11:19:34,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32f6647d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:34, skipping insertion in model container [2020-09-21 11:19:34,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:19:34" (1/1) ... [2020-09-21 11:19:34,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:19:34,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:19:34,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:19:34,944 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:19:34,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:19:34,980 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:19:34,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:34 WrapperNode [2020-09-21 11:19:34,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:19:34,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:19:34,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:19:34,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:19:34,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:34" (1/1) ... [2020-09-21 11:19:34,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:34" (1/1) ... [2020-09-21 11:19:35,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:34" (1/1) ... [2020-09-21 11:19:35,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:34" (1/1) ... [2020-09-21 11:19:35,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:34" (1/1) ... [2020-09-21 11:19:35,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:34" (1/1) ... [2020-09-21 11:19:35,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:34" (1/1) ... [2020-09-21 11:19:35,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:19:35,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:19:35,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:19:35,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:19:35,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:19:35,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:19:35,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:19:35,166 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2020-09-21 11:19:35,167 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:19:35,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:19:35,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:19:35,167 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2020-09-21 11:19:35,167 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:19:35,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:19:35,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:19:35,442 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:19:35,442 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 11:19:35,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:19:35 BoogieIcfgContainer [2020-09-21 11:19:35,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:19:35,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:19:35,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:19:35,465 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:19:35,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:19:34" (1/3) ... [2020-09-21 11:19:35,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c68caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:19:35, skipping insertion in model container [2020-09-21 11:19:35,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:34" (2/3) ... [2020-09-21 11:19:35,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c68caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:19:35, skipping insertion in model container [2020-09-21 11:19:35,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:19:35" (3/3) ... [2020-09-21 11:19:35,471 INFO L109 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2020-09-21 11:19:35,498 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:19:35,511 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:19:35,535 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:19:35,567 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:19:35,567 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:19:35,567 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:19:35,567 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:19:35,568 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:19:35,568 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:19:35,568 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:19:35,568 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:19:35,589 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-21 11:19:35,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-21 11:19:35,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:35,600 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:35,600 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:35,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:35,608 INFO L82 PathProgramCache]: Analyzing trace with hash -962219036, now seen corresponding path program 1 times [2020-09-21 11:19:35,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:35,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258351230] [2020-09-21 11:19:35,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:35,801 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:35,801 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:35,801 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:35,802 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:35,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:19:35,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:35,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 11:19:35,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:35,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:19:35,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:19:35,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 11:19:35,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:35,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:35,882 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:35,882 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:35,882 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:35,882 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:35,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:35,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:35,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:35,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:35,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:35,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:35,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:35,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:35,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:19:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:35,917 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:35,918 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:35,918 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:35,918 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:35,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:35,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:35,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 11:19:35,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:35,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:19:35,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:35,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:35,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:36,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 11:19:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:36,027 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:36,028 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:36,028 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:36,029 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:36,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:36,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:36,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:19:36,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:36,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:19:36,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:36,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:19:36,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:36,061 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 11:19:36,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258351230] [2020-09-21 11:19:36,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:36,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 11:19:36,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853172220] [2020-09-21 11:19:36,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:19:36,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:36,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:19:36,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:19:36,102 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-09-21 11:19:36,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:36,258 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2020-09-21 11:19:36,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:19:36,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-09-21 11:19:36,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:36,275 INFO L225 Difference]: With dead ends: 42 [2020-09-21 11:19:36,275 INFO L226 Difference]: Without dead ends: 26 [2020-09-21 11:19:36,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:19:36,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-21 11:19:36,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-21 11:19:36,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-21 11:19:36,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2020-09-21 11:19:36,338 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 23 [2020-09-21 11:19:36,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:36,339 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-09-21 11:19:36,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:19:36,339 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-09-21 11:19:36,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-21 11:19:36,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:36,343 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:36,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:19:36,344 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:36,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:36,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1472914703, now seen corresponding path program 1 times [2020-09-21 11:19:36,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:36,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208142765] [2020-09-21 11:19:36,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:36,390 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:36,390 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:36,390 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:36,391 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:36,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-21 11:19:36,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:36,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:19:36,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:36,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:19:36,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-21 11:19:36,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 11:19:36,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:36,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:36,442 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:36,445 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:36,445 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:36,446 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:36,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:36,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:36,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:19:36,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:36,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:36,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:36,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:36,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:36,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:19:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:36,458 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:36,458 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:36,459 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:36,459 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:36,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:36,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:36,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:19:36,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:36,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:36,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:36,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:36,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:36,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:36,486 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:36,487 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:36,487 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:36,488 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:36,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:36,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:36,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:19:36,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:36,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:36,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:36,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:36,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:36,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 11:19:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:36,547 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:36,547 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:36,548 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:36,548 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:36,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:36,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:36,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-21 11:19:36,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:36,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:19:36,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:36,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:36,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:36,592 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-21 11:19:36,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208142765] [2020-09-21 11:19:36,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:19:36,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:19:36,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041805739] [2020-09-21 11:19:36,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:19:36,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:36,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:19:36,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:19:36,598 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 5 states. [2020-09-21 11:19:36,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:36,704 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2020-09-21 11:19:36,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:19:36,705 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-21 11:19:36,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:36,707 INFO L225 Difference]: With dead ends: 30 [2020-09-21 11:19:36,707 INFO L226 Difference]: Without dead ends: 26 [2020-09-21 11:19:36,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:19:36,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-21 11:19:36,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-21 11:19:36,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-21 11:19:36,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2020-09-21 11:19:36,717 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 30 [2020-09-21 11:19:36,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:36,718 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2020-09-21 11:19:36,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:19:36,718 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2020-09-21 11:19:36,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-21 11:19:36,720 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:36,720 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:36,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:19:36,721 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:36,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:36,722 INFO L82 PathProgramCache]: Analyzing trace with hash -315179220, now seen corresponding path program 1 times [2020-09-21 11:19:36,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:36,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518755719] [2020-09-21 11:19:36,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:36,762 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:36,762 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:36,762 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:36,763 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:36,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-21 11:19:36,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:36,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:19:36,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:36,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:19:36,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-21 11:19:36,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:19:36,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:36,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:36,842 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:36,842 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:36,842 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:36,843 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:36,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:36,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:36,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:36,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:36,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:36,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:36,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:36,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:36,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:19:36,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:36,863 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:36,864 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:36,864 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:36,864 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:36,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:36,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:36,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:19:36,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:36,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:36,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:36,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:36,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:36,881 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:36,882 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:36,882 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:36,882 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:36,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:36,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:36,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:36,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:36,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:36,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:36,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:36,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:36,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 11:19:36,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:36,935 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:36,935 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:36,935 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:36,935 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:36,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:19:36,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:36,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:19:36,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:36,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:19:36,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:36,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:19:36,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:36,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:19:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:36,996 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:36,996 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:36,996 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:36,997 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:36,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:36,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:36,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:19:36,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:36,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:19:36,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:36,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 11:19:36,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:37,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:37,012 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:37,012 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:37,012 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:37,013 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:37,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:37,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:37,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:37,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:37,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:37,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:37,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:37,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:37,025 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-21 11:19:37,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518755719] [2020-09-21 11:19:37,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:37,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 11:19:37,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335161535] [2020-09-21 11:19:37,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:19:37,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:37,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:19:37,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:19:37,029 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 5 states. [2020-09-21 11:19:37,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:37,126 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2020-09-21 11:19:37,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:19:37,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-09-21 11:19:37,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:37,130 INFO L225 Difference]: With dead ends: 50 [2020-09-21 11:19:37,130 INFO L226 Difference]: Without dead ends: 30 [2020-09-21 11:19:37,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:19:37,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-21 11:19:37,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-21 11:19:37,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-21 11:19:37,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-09-21 11:19:37,150 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 43 [2020-09-21 11:19:37,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:37,153 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-09-21 11:19:37,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:19:37,153 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-09-21 11:19:37,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-21 11:19:37,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:37,155 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:37,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:19:37,155 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:37,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:37,157 INFO L82 PathProgramCache]: Analyzing trace with hash 746268336, now seen corresponding path program 2 times [2020-09-21 11:19:37,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:37,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272198923] [2020-09-21 11:19:37,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:37,448 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-21 11:19:37,449 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:37,449 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:37,449 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:37,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-21 11:19:37,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:37,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-21 11:19:37,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:37,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 11:19:37,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:19:37,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-21 11:19:37,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 11:19:37,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:37,547 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:37,548 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:37,550 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:37,550 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:37,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:37,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:37,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:19:37,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:37,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:37,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:37,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:37,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:37,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:19:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:37,599 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:37,600 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:37,600 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:37,600 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:37,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:37,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:37,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-21 11:19:37,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:37,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 11:19:37,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:37,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:37,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:37,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:37,688 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:37,689 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:37,689 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:37,689 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:37,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:37,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:37,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:19:37,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:37,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:37,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:37,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:37,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:37,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 11:19:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:37,797 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:37,797 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:37,797 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:37,797 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:37,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:37,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:37,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-21 11:19:37,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:37,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:37,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:37,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:37,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:37,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:37,952 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:37,952 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:37,952 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:37,953 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:37,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:37,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:37,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:19:37,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:37,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:37,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:37,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:37,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:37,991 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-21 11:19:37,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272198923] [2020-09-21 11:19:37,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:37,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-21 11:19:37,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284637730] [2020-09-21 11:19:37,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-21 11:19:37,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:37,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-21 11:19:37,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-09-21 11:19:37,994 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 14 states. [2020-09-21 11:19:38,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:38,347 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2020-09-21 11:19:38,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:19:38,347 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-09-21 11:19:38,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:38,349 INFO L225 Difference]: With dead ends: 43 [2020-09-21 11:19:38,349 INFO L226 Difference]: Without dead ends: 39 [2020-09-21 11:19:38,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2020-09-21 11:19:38,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-21 11:19:38,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2020-09-21 11:19:38,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-21 11:19:38,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2020-09-21 11:19:38,363 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 37 [2020-09-21 11:19:38,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:38,364 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-09-21 11:19:38,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-21 11:19:38,364 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2020-09-21 11:19:38,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-21 11:19:38,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:38,367 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:38,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:19:38,367 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:38,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:38,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1882602408, now seen corresponding path program 2 times [2020-09-21 11:19:38,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:38,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181897350] [2020-09-21 11:19:38,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:38,389 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:38,390 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:38,390 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:38,390 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:38,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-21 11:19:38,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:38,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:19:38,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:38,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:19:38,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-21 11:19:38,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:19:38,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:38,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:38,405 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:38,405 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:38,406 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:38,406 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:38,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:38,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:38,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:38,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:38,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:38,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:38,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:38,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:38,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:19:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:38,412 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:38,412 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:38,412 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:38,412 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:38,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:38,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:38,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:38,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:38,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:38,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:38,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:38,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:38,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:38,421 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:38,421 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:38,422 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:38,422 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:38,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:38,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:38,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:38,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:38,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:38,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:38,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:38,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:38,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 11:19:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:38,437 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:38,437 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:38,437 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:38,437 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:38,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:19:38,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:38,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:19:38,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:38,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:19:38,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:19:38,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:19:38,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:38,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:38,466 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:38,467 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:38,467 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:38,467 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:38,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:19:38,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:38,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:19:38,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:38,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:19:38,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:19:38,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 11:19:38,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:38,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:19:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:38,491 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:38,491 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:38,492 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:38,492 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:38,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:38,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:38,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:38,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:38,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:19:38,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:38,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:19:38,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:38,499 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-21 11:19:38,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181897350] [2020-09-21 11:19:38,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:38,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 11:19:38,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253852990] [2020-09-21 11:19:38,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:19:38,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:38,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:19:38,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:19:38,503 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand 6 states. [2020-09-21 11:19:38,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:38,584 INFO L93 Difference]: Finished difference Result 60 states and 83 transitions. [2020-09-21 11:19:38,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:19:38,585 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-09-21 11:19:38,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:38,586 INFO L225 Difference]: With dead ends: 60 [2020-09-21 11:19:38,587 INFO L226 Difference]: Without dead ends: 32 [2020-09-21 11:19:38,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:19:38,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-21 11:19:38,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-09-21 11:19:38,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-21 11:19:38,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2020-09-21 11:19:38,597 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 43 [2020-09-21 11:19:38,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:38,597 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2020-09-21 11:19:38,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:19:38,598 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2020-09-21 11:19:38,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-21 11:19:38,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:38,600 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:38,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:19:38,600 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:38,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:38,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1837502139, now seen corresponding path program 3 times [2020-09-21 11:19:38,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:38,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634511538] [2020-09-21 11:19:38,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:38,803 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-21 11:19:38,803 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:38,803 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:38,803 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:38,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-21 11:19:38,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:38,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-21 11:19:38,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:38,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-21 11:19:38,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:19:38,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-21 11:19:38,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:38,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:38,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:38,862 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:38,863 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:38,863 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:38,863 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:38,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:38,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:38,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:38,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:38,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:38,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:38,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:38,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:38,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:19:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:38,895 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:38,896 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:38,896 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:38,896 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:38,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:38,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:38,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-21 11:19:38,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:38,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 11:19:38,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:38,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:38,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:38,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:38,974 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:38,974 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:38,974 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:38,975 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:38,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:38,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:38,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:19:38,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:38,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:38,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:38,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:38,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:39,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 11:19:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:39,095 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:39,095 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:39,095 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:39,096 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:39,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:19:39,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:39,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-21 11:19:39,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:39,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:19:39,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:39,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:19:39,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:39,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:39,221 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:39,221 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:39,221 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:39,222 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:39,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:39,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:39,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 11:19:39,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:39,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:39,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:39,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:39,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:39,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:39,329 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:39,330 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:39,330 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:39,331 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:39,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:39,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:39,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 11:19:39,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:39,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:39,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:39,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:39,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:39,394 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 7 proven. 34 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-21 11:19:39,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634511538] [2020-09-21 11:19:39,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:39,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-21 11:19:39,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366908542] [2020-09-21 11:19:39,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-21 11:19:39,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:39,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-21 11:19:39,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-09-21 11:19:39,397 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 17 states. [2020-09-21 11:19:39,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:39,916 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2020-09-21 11:19:39,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 11:19:39,916 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2020-09-21 11:19:39,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:39,917 INFO L225 Difference]: With dead ends: 43 [2020-09-21 11:19:39,918 INFO L226 Difference]: Without dead ends: 39 [2020-09-21 11:19:39,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2020-09-21 11:19:39,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-21 11:19:39,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2020-09-21 11:19:39,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-21 11:19:39,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2020-09-21 11:19:39,928 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 44 [2020-09-21 11:19:39,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:39,929 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2020-09-21 11:19:39,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-21 11:19:39,929 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2020-09-21 11:19:39,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-21 11:19:39,931 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:39,931 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:39,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:19:39,932 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:39,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:39,932 INFO L82 PathProgramCache]: Analyzing trace with hash 430867302, now seen corresponding path program 4 times [2020-09-21 11:19:39,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:39,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058229621] [2020-09-21 11:19:39,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:40,184 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-21 11:19:40,184 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:40,185 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:40,185 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:40,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-21 11:19:40,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:40,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-21 11:19:40,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-21 11:19:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:19:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-21 11:19:40,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:40,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:40,246 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:40,246 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:40,247 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:40,247 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:40,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:40,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:40,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:40,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:40,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:40,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:40,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:40,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:40,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:19:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:40,278 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:40,279 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:40,279 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:40,279 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:40,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:40,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:40,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-21 11:19:40,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:40,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 11:19:40,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:40,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:40,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:40,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:40,358 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:40,358 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:40,359 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:40,359 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:40,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:40,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:40,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:19:40,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:40,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:40,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:40,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:40,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:40,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 11:19:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:40,511 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:40,512 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:40,512 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:40,512 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:40,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:19:40,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:40,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-21 11:19:40,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:40,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 11:19:40,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:40,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:19:40,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:40,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:40,630 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:40,630 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:40,631 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:40,631 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:40,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:19:40,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:40,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-21 11:19:40,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:40,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:19:40,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:40,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:19:40,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:40,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:40,739 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:40,740 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:40,740 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:40,740 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:40,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:40,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:40,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-21 11:19:40,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:40,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:40,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:40,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:40,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:40,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:40,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:40,812 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:40,813 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:40,813 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:40,813 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:40,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:40,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:40,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:19:40,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:40,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:40,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:40,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:40,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:40,885 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-21 11:19:40,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058229621] [2020-09-21 11:19:40,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:40,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-21 11:19:40,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814207044] [2020-09-21 11:19:40,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-21 11:19:40,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:40,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-21 11:19:40,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-09-21 11:19:40,889 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand 17 states. [2020-09-21 11:19:41,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:41,435 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2020-09-21 11:19:41,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 11:19:41,436 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 51 [2020-09-21 11:19:41,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:41,437 INFO L225 Difference]: With dead ends: 46 [2020-09-21 11:19:41,437 INFO L226 Difference]: Without dead ends: 42 [2020-09-21 11:19:41,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2020-09-21 11:19:41,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-21 11:19:41,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2020-09-21 11:19:41,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-21 11:19:41,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-09-21 11:19:41,460 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 51 [2020-09-21 11:19:41,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:41,461 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-09-21 11:19:41,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-21 11:19:41,461 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-09-21 11:19:41,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-21 11:19:41,463 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:41,464 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:41,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:19:41,464 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:41,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:41,465 INFO L82 PathProgramCache]: Analyzing trace with hash -272057979, now seen corresponding path program 5 times [2020-09-21 11:19:41,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:41,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180468664] [2020-09-21 11:19:41,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:41,864 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-21 11:19:41,864 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:41,864 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:41,864 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:41,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-21 11:19:41,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:41,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-09-21 11:19:41,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:41,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-21 11:19:41,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:19:41,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-21 11:19:41,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:41,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:41,924 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:41,924 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:41,924 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:41,924 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:41,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:41,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:41,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:41,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:41,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:41,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:41,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:41,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:41,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:19:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:41,960 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:41,961 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:41,961 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:41,961 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:41,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:41,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:41,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-21 11:19:41,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:41,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 11:19:41,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:41,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:41,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:42,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:42,032 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:42,033 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:42,033 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:42,033 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:42,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:42,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:42,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:19:42,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:42,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:42,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:42,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:42,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:42,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 11:19:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:42,236 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:42,237 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:42,237 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:42,237 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:42,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:19:42,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:42,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-21 11:19:42,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:42,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 11:19:42,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:42,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 11:19:42,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:42,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:42,435 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:42,435 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:42,435 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:42,435 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:42,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:19:42,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:42,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-21 11:19:42,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:42,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 11:19:42,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:42,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:19:42,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:42,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:42,594 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:42,594 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:42,594 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:42,595 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:42,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:19:42,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:42,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-21 11:19:42,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:42,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:19:42,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:42,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:19:42,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:42,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:42,699 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:42,700 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:42,700 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:42,700 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:42,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:42,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:42,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 11:19:42,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:42,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:42,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:42,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:42,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:42,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:42,785 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:42,786 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:42,786 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:42,786 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:42,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:42,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:42,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:19:42,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:42,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:42,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:42,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:42,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:42,848 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 8 proven. 64 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-09-21 11:19:42,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180468664] [2020-09-21 11:19:42,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:42,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-21 11:19:42,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454586586] [2020-09-21 11:19:42,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-21 11:19:42,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:42,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-21 11:19:42,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2020-09-21 11:19:42,851 INFO L87 Difference]: Start difference. First operand 38 states and 52 transitions. Second operand 20 states. [2020-09-21 11:19:43,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:43,562 INFO L93 Difference]: Finished difference Result 49 states and 65 transitions. [2020-09-21 11:19:43,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 11:19:43,562 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 58 [2020-09-21 11:19:43,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:43,566 INFO L225 Difference]: With dead ends: 49 [2020-09-21 11:19:43,566 INFO L226 Difference]: Without dead ends: 45 [2020-09-21 11:19:43,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=833, Unknown=0, NotChecked=0, Total=930 [2020-09-21 11:19:43,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-21 11:19:43,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-09-21 11:19:43,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-21 11:19:43,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2020-09-21 11:19:43,583 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 58 transitions. Word has length 58 [2020-09-21 11:19:43,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:43,584 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 58 transitions. [2020-09-21 11:19:43,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-21 11:19:43,584 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2020-09-21 11:19:43,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-21 11:19:43,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:43,585 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:43,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:19:43,586 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:43,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:43,586 INFO L82 PathProgramCache]: Analyzing trace with hash 124271423, now seen corresponding path program 3 times [2020-09-21 11:19:43,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:43,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080673947] [2020-09-21 11:19:43,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:43,601 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:43,601 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:43,601 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:43,602 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:43,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-21 11:19:43,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:43,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:19:43,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:43,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:19:43,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:19:43,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:19:43,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:43,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:43,618 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:43,618 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:43,618 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:43,619 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:43,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:43,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:43,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:43,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:43,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:43,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:43,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:43,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:43,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:19:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:43,629 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:43,630 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:43,630 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:43,630 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:43,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:19:43,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:43,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:19:43,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:43,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:19:43,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:19:43,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 11:19:43,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:43,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:19:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:43,655 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:43,655 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:43,655 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:43,656 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:43,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:43,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:43,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:43,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:43,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:19:43,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:43,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 11:19:43,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:43,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:43,663 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:43,664 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:43,664 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:43,664 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:43,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:43,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:43,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:43,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:43,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:43,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:43,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:43,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:43,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-21 11:19:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:43,674 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:43,674 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:43,674 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:43,687 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:43,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:19:43,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:43,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:19:43,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:43,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:43,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-21 11:19:43,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:43,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:43,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:43,695 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:43,695 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:43,695 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:43,695 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:43,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:43,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:43,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:43,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:43,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:43,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:43,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:43,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:43,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:43,702 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:43,703 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:43,703 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:43,703 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:43,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:43,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:43,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:43,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:43,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:43,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:43,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:43,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:43,710 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-09-21 11:19:43,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080673947] [2020-09-21 11:19:43,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:43,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 11:19:43,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011198938] [2020-09-21 11:19:43,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:19:43,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:43,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:19:43,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:19:43,713 INFO L87 Difference]: Start difference. First operand 41 states and 58 transitions. Second operand 5 states. [2020-09-21 11:19:43,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:43,770 INFO L93 Difference]: Finished difference Result 72 states and 99 transitions. [2020-09-21 11:19:43,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:19:43,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-09-21 11:19:43,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:43,772 INFO L225 Difference]: With dead ends: 72 [2020-09-21 11:19:43,772 INFO L226 Difference]: Without dead ends: 37 [2020-09-21 11:19:43,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:19:43,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-21 11:19:43,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-09-21 11:19:43,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-21 11:19:43,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2020-09-21 11:19:43,781 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 50 [2020-09-21 11:19:43,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:43,782 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2020-09-21 11:19:43,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:19:43,782 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2020-09-21 11:19:43,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-21 11:19:43,783 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:43,783 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:43,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:19:43,784 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:43,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:43,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1146349017, now seen corresponding path program 6 times [2020-09-21 11:19:43,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:43,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729111088] [2020-09-21 11:19:43,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:43,932 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:43,933 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:43,933 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:43,933 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:43,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-21 11:19:43,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:43,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-21 11:19:43,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:43,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-21 11:19:43,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:19:43,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-21 11:19:43,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:44,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:44,006 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:44,006 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:44,006 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:44,007 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:44,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:44,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:44,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:44,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:44,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:44,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:44,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:44,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:44,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:19:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:44,057 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:44,057 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:44,058 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:44,058 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:44,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:19:44,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:44,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 11:19:44,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:44,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 11:19:44,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:44,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:19:44,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:44,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:44,191 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:44,191 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:44,192 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:44,192 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:44,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:44,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:44,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 11:19:44,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:44,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:44,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:44,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:44,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:44,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:44,273 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:44,274 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:44,274 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:44,274 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:44,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:44,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:44,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:19:44,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:44,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:44,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:44,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:44,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:44,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 11:19:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:44,342 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:44,342 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:44,342 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:44,343 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:44,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:44,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:44,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-21 11:19:44,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:44,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:44,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:44,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:44,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:44,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:44,437 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:44,437 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:44,438 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:44,438 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:44,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:44,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:44,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:19:44,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:44,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:44,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:44,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:44,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:44,497 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-21 11:19:44,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729111088] [2020-09-21 11:19:44,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:44,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-21 11:19:44,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881442526] [2020-09-21 11:19:44,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-21 11:19:44,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:44,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-21 11:19:44,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-09-21 11:19:44,500 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand 18 states. [2020-09-21 11:19:44,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:44,985 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2020-09-21 11:19:44,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 11:19:44,985 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 44 [2020-09-21 11:19:44,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:44,987 INFO L225 Difference]: With dead ends: 47 [2020-09-21 11:19:44,987 INFO L226 Difference]: Without dead ends: 43 [2020-09-21 11:19:44,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2020-09-21 11:19:44,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-21 11:19:44,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-09-21 11:19:44,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-21 11:19:44,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2020-09-21 11:19:44,996 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 44 [2020-09-21 11:19:44,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:44,997 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2020-09-21 11:19:44,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-21 11:19:44,997 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2020-09-21 11:19:44,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-21 11:19:44,998 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:44,998 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:44,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 11:19:44,999 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:44,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:44,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1872336740, now seen corresponding path program 7 times [2020-09-21 11:19:44,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:45,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819138302] [2020-09-21 11:19:45,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:45,215 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:19:45,215 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:45,216 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:45,216 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:45,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-21 11:19:45,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:45,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-21 11:19:45,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:45,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-21 11:19:45,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:19:45,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-21 11:19:45,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:45,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:45,269 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:45,269 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:45,270 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:45,270 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:45,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:45,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:45,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:45,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:45,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:45,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:45,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:45,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:45,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:19:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:45,323 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:45,323 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:45,324 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:45,324 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:45,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:19:45,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:45,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 11:19:45,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 11:19:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:19:45,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:45,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:45,421 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:45,422 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:45,422 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:45,422 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:45,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:45,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:45,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-21 11:19:45,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:45,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:45,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:45,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:45,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:45,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:45,513 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:45,513 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:45,513 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:45,514 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:45,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:45,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:45,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:19:45,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:45,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:45,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:45,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:45,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:45,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 11:19:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:45,613 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:45,614 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:45,614 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:45,614 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:45,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:19:45,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:45,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 11:19:45,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:45,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:19:45,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:45,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:19:45,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:45,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:45,679 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:45,679 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:45,679 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:45,679 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:45,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:45,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:45,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 11:19:45,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:45,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:45,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:45,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:45,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:45,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:45,739 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:45,739 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:45,739 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:45,740 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:45,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:45,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:45,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:19:45,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:45,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:45,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:45,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:45,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:45,771 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 5 proven. 49 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-21 11:19:45,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819138302] [2020-09-21 11:19:45,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:45,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-21 11:19:45,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552527803] [2020-09-21 11:19:45,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-21 11:19:45,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:45,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-21 11:19:45,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-09-21 11:19:45,773 INFO L87 Difference]: Start difference. First operand 39 states and 54 transitions. Second operand 15 states. [2020-09-21 11:19:46,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:46,149 INFO L93 Difference]: Finished difference Result 47 states and 60 transitions. [2020-09-21 11:19:46,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 11:19:46,150 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-09-21 11:19:46,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:46,151 INFO L225 Difference]: With dead ends: 47 [2020-09-21 11:19:46,152 INFO L226 Difference]: Without dead ends: 43 [2020-09-21 11:19:46,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2020-09-21 11:19:46,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-21 11:19:46,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-09-21 11:19:46,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-21 11:19:46,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2020-09-21 11:19:46,163 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 51 [2020-09-21 11:19:46,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:46,163 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2020-09-21 11:19:46,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-21 11:19:46,164 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2020-09-21 11:19:46,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-21 11:19:46,164 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:46,165 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:46,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 11:19:46,165 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:46,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:46,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1605933725, now seen corresponding path program 8 times [2020-09-21 11:19:46,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:46,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104529725] [2020-09-21 11:19:46,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:46,430 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:19:46,430 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:46,430 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:46,430 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:46,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-21 11:19:46,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:46,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-09-21 11:19:46,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:46,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-21 11:19:46,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:19:46,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-21 11:19:46,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:46,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:46,480 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:46,480 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:46,480 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:46,480 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:46,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:46,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:46,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:46,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:46,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:46,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:46,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:46,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:46,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:19:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:46,528 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:46,529 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:46,529 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:46,529 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:46,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:19:46,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:46,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-21 11:19:46,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:46,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 11:19:46,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:46,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:19:46,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:46,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:46,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:46,623 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:46,623 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:46,624 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:46,624 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:46,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:46,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:46,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-21 11:19:46,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:46,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:46,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:46,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:46,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:46,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:46,710 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:46,710 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:46,710 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:46,711 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:46,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:46,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:46,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:19:46,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:46,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:46,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:46,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:46,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:46,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 11:19:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:46,869 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:46,869 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:46,870 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:46,870 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:46,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:19:46,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:46,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-21 11:19:46,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:46,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 11:19:46,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:46,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:19:46,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:46,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:47,006 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:47,007 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:47,007 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:47,008 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:47,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:19:47,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:47,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-21 11:19:47,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:47,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:19:47,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:47,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:19:47,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:47,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:47,141 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:47,142 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:47,142 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:47,142 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:47,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:47,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:47,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 11:19:47,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:47,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:47,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:47,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:47,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:47,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:47,272 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:47,272 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:47,272 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:47,272 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:47,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:47,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:47,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:19:47,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:47,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:47,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:47,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:47,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:47,293 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 15 proven. 76 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-21 11:19:47,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104529725] [2020-09-21 11:19:47,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:47,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-21 11:19:47,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454536036] [2020-09-21 11:19:47,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-21 11:19:47,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:47,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-21 11:19:47,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2020-09-21 11:19:47,296 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand 21 states. [2020-09-21 11:19:47,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:47,936 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2020-09-21 11:19:47,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 11:19:47,937 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 58 [2020-09-21 11:19:47,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:47,938 INFO L225 Difference]: With dead ends: 47 [2020-09-21 11:19:47,938 INFO L226 Difference]: Without dead ends: 43 [2020-09-21 11:19:47,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2020-09-21 11:19:47,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-21 11:19:47,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-09-21 11:19:47,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-21 11:19:47,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 52 transitions. [2020-09-21 11:19:47,951 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 52 transitions. Word has length 58 [2020-09-21 11:19:47,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:47,952 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 52 transitions. [2020-09-21 11:19:47,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-21 11:19:47,953 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 52 transitions. [2020-09-21 11:19:47,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-21 11:19:47,953 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:47,954 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:47,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 11:19:47,954 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:47,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:47,954 INFO L82 PathProgramCache]: Analyzing trace with hash 921134702, now seen corresponding path program 9 times [2020-09-21 11:19:47,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:47,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234924713] [2020-09-21 11:19:47,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:48,284 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:19:48,284 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:48,284 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:48,284 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:48,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 11:19:48,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:48,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-09-21 11:19:48,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:48,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-21 11:19:48,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:19:48,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-21 11:19:48,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:48,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:48,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:48,332 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:48,332 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:48,332 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:48,332 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:48,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:48,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:48,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:48,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:48,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:48,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:48,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:48,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:48,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:19:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:48,376 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:48,376 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:48,376 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:48,377 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:48,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:19:48,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:48,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-21 11:19:48,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:48,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 11:19:48,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:48,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:19:48,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:48,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:48,460 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:48,460 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:48,460 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:48,460 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:48,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:48,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:48,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 11:19:48,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:48,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:48,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:48,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:48,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:48,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:48,565 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:48,565 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:48,566 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:48,566 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:48,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:48,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:48,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:19:48,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:48,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:48,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:48,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:48,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:48,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 11:19:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:48,782 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:48,782 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:48,782 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:48,782 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:48,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:19:48,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:48,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-21 11:19:48,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:48,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 11:19:48,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:48,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 11:19:48,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:48,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:48,982 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:48,982 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:48,983 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:48,983 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:48,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:19:48,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:48,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-21 11:19:48,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:48,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 11:19:48,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:48,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:19:48,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:49,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:49,108 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:49,108 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:49,108 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:49,108 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:49,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:19:49,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:49,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 11:19:49,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:49,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:19:49,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:49,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:19:49,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:49,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:49,238 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:49,239 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:49,239 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:49,239 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:49,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:49,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:49,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-21 11:19:49,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:49,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:49,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:49,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:49,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:49,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:49,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:49,342 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:49,342 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:49,343 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:49,343 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:49,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:49,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:49,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:19:49,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:49,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:49,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:49,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:49,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:49,375 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 32 proven. 88 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-09-21 11:19:49,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234924713] [2020-09-21 11:19:49,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:49,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-21 11:19:49,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799277561] [2020-09-21 11:19:49,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-21 11:19:49,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:49,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-21 11:19:49,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2020-09-21 11:19:49,378 INFO L87 Difference]: Start difference. First operand 39 states and 52 transitions. Second operand 23 states. [2020-09-21 11:19:50,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:50,236 INFO L93 Difference]: Finished difference Result 47 states and 58 transitions. [2020-09-21 11:19:50,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 11:19:50,236 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 65 [2020-09-21 11:19:50,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:50,238 INFO L225 Difference]: With dead ends: 47 [2020-09-21 11:19:50,238 INFO L226 Difference]: Without dead ends: 43 [2020-09-21 11:19:50,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=121, Invalid=1001, Unknown=0, NotChecked=0, Total=1122 [2020-09-21 11:19:50,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-21 11:19:50,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2020-09-21 11:19:50,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-21 11:19:50,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2020-09-21 11:19:50,245 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 65 [2020-09-21 11:19:50,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:50,245 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2020-09-21 11:19:50,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-21 11:19:50,246 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2020-09-21 11:19:50,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-21 11:19:50,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:50,247 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:50,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 11:19:50,247 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:50,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:50,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1602258660, now seen corresponding path program 10 times [2020-09-21 11:19:50,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:50,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832826209] [2020-09-21 11:19:50,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:50,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:50,539 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-21 11:19:50,539 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:50,540 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:50,540 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:50,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 11:19:50,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:50,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-21 11:19:50,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:50,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-21 11:19:50,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:19:50,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-21 11:19:50,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:50,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:50,604 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:50,604 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:50,604 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:50,604 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:50,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:50,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:50,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:19:50,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:50,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:50,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:50,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:50,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:50,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:19:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:50,626 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:50,626 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:50,626 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:50,626 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:50,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:50,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:50,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 11:19:50,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:50,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 11:19:50,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:50,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:50,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:50,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:50,710 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:50,710 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:50,710 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:50,710 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:50,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:50,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:50,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:19:50,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:50,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:50,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:50,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:50,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:50,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 11:19:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:50,907 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:50,908 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:50,908 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:50,908 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:50,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-21 11:19:50,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:50,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-21 11:19:50,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:50,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-21 11:19:50,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:50,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 11:19:50,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:50,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:51,103 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:51,103 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:51,104 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:51,104 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:51,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:19:51,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:51,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-21 11:19:51,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:51,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 11:19:51,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:51,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 11:19:51,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:51,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:51,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:51,286 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:51,286 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:51,287 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:51,287 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:51,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:19:51,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:51,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-21 11:19:51,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:51,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 11:19:51,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:51,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:19:51,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:51,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:51,442 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:51,442 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:51,442 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:51,443 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:51,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:19:51,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:51,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-21 11:19:51,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:51,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:19:51,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:51,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:19:51,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:51,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:51,559 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:51,559 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:51,559 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:51,560 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:51,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:51,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:51,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 11:19:51,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:51,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:51,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:51,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:51,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:51,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:51,664 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:51,665 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:51,665 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:51,665 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:51,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:51,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:51,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:19:51,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:51,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:51,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:51,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:51,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:51,720 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 29 proven. 91 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-09-21 11:19:51,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832826209] [2020-09-21 11:19:51,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:51,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-21 11:19:51,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467309762] [2020-09-21 11:19:51,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-21 11:19:51,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:51,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-21 11:19:51,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2020-09-21 11:19:51,723 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand 23 states. [2020-09-21 11:19:52,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:52,782 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2020-09-21 11:19:52,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-21 11:19:52,783 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 65 [2020-09-21 11:19:52,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:52,784 INFO L225 Difference]: With dead ends: 50 [2020-09-21 11:19:52,785 INFO L226 Difference]: Without dead ends: 46 [2020-09-21 11:19:52,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=134, Invalid=1126, Unknown=0, NotChecked=0, Total=1260 [2020-09-21 11:19:52,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-21 11:19:52,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2020-09-21 11:19:52,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-21 11:19:52,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 57 transitions. [2020-09-21 11:19:52,802 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 57 transitions. Word has length 65 [2020-09-21 11:19:52,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:52,802 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 57 transitions. [2020-09-21 11:19:52,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-21 11:19:52,803 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 57 transitions. [2020-09-21 11:19:52,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-21 11:19:52,804 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:52,806 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:52,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 11:19:52,806 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:52,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:52,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1850137581, now seen corresponding path program 11 times [2020-09-21 11:19:52,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:52,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999392312] [2020-09-21 11:19:52,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:53,199 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:19:53,200 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:53,200 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:53,200 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:53,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-21 11:19:53,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:53,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-09-21 11:19:53,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:53,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-09-21 11:19:53,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:19:53,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-21 11:19:53,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:53,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:53,248 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:53,248 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:53,249 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:53,249 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:53,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:53,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:53,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:53,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:53,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:53,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:53,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:53,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:53,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:19:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:53,291 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:53,292 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:53,292 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:53,292 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:53,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:19:53,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:53,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 11:19:53,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 11:19:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:53,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:19:53,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:53,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:53,394 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:53,394 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:53,395 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:53,395 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:53,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:53,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:53,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-21 11:19:53,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:53,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:53,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:53,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:53,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:53,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:53,472 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:53,473 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:53,473 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:53,473 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:53,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:53,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:53,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:19:53,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:53,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:53,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:53,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:53,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:53,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 11:19:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:53,693 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:53,694 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:53,694 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:53,695 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:53,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-21 11:19:53,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:53,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-21 11:19:53,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:53,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-21 11:19:53,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:53,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 11:19:53,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:53,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:53,950 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:53,951 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:53,951 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:53,951 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:53,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:19:53,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:53,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-21 11:19:53,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:53,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 11:19:53,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:53,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 11:19:53,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:54,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:54,139 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:54,140 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:54,140 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:54,140 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:54,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:19:54,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:54,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-21 11:19:54,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:54,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 11:19:54,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:54,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:19:54,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:54,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:54,308 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:54,308 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:54,309 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:54,309 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:54,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:19:54,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:54,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-21 11:19:54,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:54,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:19:54,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:54,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:19:54,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:54,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:54,492 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:54,493 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:54,493 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:54,493 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:54,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:54,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:54,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-21 11:19:54,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:54,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:54,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:54,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:54,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:54,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:54,629 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:54,629 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:54,630 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:54,630 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:54,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:54,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:54,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:19:54,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:54,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:54,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:54,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:54,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:54,767 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 29 proven. 136 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-21 11:19:54,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999392312] [2020-09-21 11:19:54,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:54,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-09-21 11:19:54,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832094202] [2020-09-21 11:19:54,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-21 11:19:54,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:54,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-21 11:19:54,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2020-09-21 11:19:54,772 INFO L87 Difference]: Start difference. First operand 42 states and 57 transitions. Second operand 26 states. [2020-09-21 11:19:55,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:55,971 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2020-09-21 11:19:55,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-21 11:19:55,971 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 72 [2020-09-21 11:19:55,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:55,972 INFO L225 Difference]: With dead ends: 50 [2020-09-21 11:19:55,972 INFO L226 Difference]: Without dead ends: 46 [2020-09-21 11:19:55,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=167, Invalid=1315, Unknown=0, NotChecked=0, Total=1482 [2020-09-21 11:19:55,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-21 11:19:55,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-21 11:19:55,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-21 11:19:55,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2020-09-21 11:19:55,992 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 53 transitions. Word has length 72 [2020-09-21 11:19:55,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:55,992 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 53 transitions. [2020-09-21 11:19:55,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-21 11:19:55,993 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 53 transitions. [2020-09-21 11:19:55,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-21 11:19:55,994 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:55,994 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:55,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-21 11:19:55,994 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:55,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:55,995 INFO L82 PathProgramCache]: Analyzing trace with hash -2039564078, now seen corresponding path program 12 times [2020-09-21 11:19:55,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:55,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452696654] [2020-09-21 11:19:55,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:56,475 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:19:56,475 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:56,476 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:56,476 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:56,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-21 11:19:56,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:56,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-09-21 11:19:56,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:56,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-09-21 11:19:56,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:19:56,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-21 11:19:56,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:56,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:56,540 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:56,540 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:56,541 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:56,541 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:56,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:56,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:56,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:56,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:56,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:56,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:56,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:56,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:56,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:19:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:56,625 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:56,626 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:56,626 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:56,626 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:56,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:19:56,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:56,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-21 11:19:56,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 11:19:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:19:56,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:56,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:56,748 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:56,748 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:56,749 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:56,749 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:56,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:19:56,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:56,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-21 11:19:56,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:56,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:19:56,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:56,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:19:56,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:56,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:56,872 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:56,872 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:56,873 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:56,873 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:56,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:56,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:56,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 11:19:56,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:56,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:56,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:56,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:56,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:56,991 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:56,992 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:56,992 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:56,993 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:56,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:56,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:56,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:19:56,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:56,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:56,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:56,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:56,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:57,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 11:19:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:57,266 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:57,267 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:57,267 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:57,267 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:57,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-21 11:19:57,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:57,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-21 11:19:57,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:57,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-21 11:19:57,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:57,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 11:19:57,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:57,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:57,503 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:57,504 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:57,504 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:57,504 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:57,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:19:57,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:57,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-21 11:19:57,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:57,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 11:19:57,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:57,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 11:19:57,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:57,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:57,713 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:57,714 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:57,714 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:57,715 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:57,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:19:57,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:57,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-21 11:19:57,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:57,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 11:19:57,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:57,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:19:57,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:57,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:57,892 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:57,893 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:57,893 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:57,893 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:57,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:19:57,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:57,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-21 11:19:57,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:57,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:19:57,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:57,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:19:57,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:58,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:58,051 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:19:58,052 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:58,052 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:58,052 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:58,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:58,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:58,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-21 11:19:58,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:58,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:58,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:58,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:58,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:58,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:58,247 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:58,248 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:58,248 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:58,248 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:58,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:58,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:58,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:19:58,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:58,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:58,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:58,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:58,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:58,350 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 34 proven. 170 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-21 11:19:58,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452696654] [2020-09-21 11:19:58,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:58,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-21 11:19:58,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263680950] [2020-09-21 11:19:58,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-21 11:19:58,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:58,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-21 11:19:58,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=750, Unknown=0, NotChecked=0, Total=812 [2020-09-21 11:19:58,353 INFO L87 Difference]: Start difference. First operand 40 states and 53 transitions. Second operand 29 states. [2020-09-21 11:19:59,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:59,690 INFO L93 Difference]: Finished difference Result 50 states and 67 transitions. [2020-09-21 11:19:59,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-21 11:19:59,691 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 79 [2020-09-21 11:19:59,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:59,693 INFO L225 Difference]: With dead ends: 50 [2020-09-21 11:19:59,693 INFO L226 Difference]: Without dead ends: 46 [2020-09-21 11:19:59,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=175, Invalid=1547, Unknown=0, NotChecked=0, Total=1722 [2020-09-21 11:19:59,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-21 11:19:59,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2020-09-21 11:19:59,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-21 11:19:59,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2020-09-21 11:19:59,702 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 60 transitions. Word has length 79 [2020-09-21 11:19:59,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:59,703 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 60 transitions. [2020-09-21 11:19:59,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-21 11:19:59,703 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 60 transitions. [2020-09-21 11:19:59,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-21 11:19:59,704 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:59,704 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:59,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-21 11:19:59,704 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:59,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:59,705 INFO L82 PathProgramCache]: Analyzing trace with hash 912513436, now seen corresponding path program 13 times [2020-09-21 11:19:59,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:59,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79779063] [2020-09-21 11:19:59,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:00,019 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:20:00,019 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:00,019 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:00,020 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:00,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 11:20:00,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:00,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-09-21 11:20:00,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:00,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-21 11:20:00,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:20:00,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-21 11:20:00,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:00,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:20:00,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:00,067 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:00,067 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:00,068 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:00,068 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:00,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:20:00,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:00,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:20:00,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:00,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:00,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:20:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:00,129 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:00,130 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:00,130 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:00,130 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:00,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:20:00,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:00,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-21 11:20:00,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:00,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 11:20:00,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:00,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:20:00,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:00,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:00,233 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:00,234 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:00,234 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:00,234 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:00,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:20:00,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:00,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-21 11:20:00,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:00,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:20:00,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:00,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:20:00,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:00,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:00,339 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:00,340 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:00,340 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:00,341 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:00,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:20:00,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:00,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-21 11:20:00,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:00,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:20:00,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:00,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:20:00,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:00,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:00,434 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:00,435 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:00,435 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:00,436 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:00,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:00,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:00,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:20:00,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:00,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:00,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:00,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:20:00,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:00,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 11:20:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:00,591 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:00,592 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:00,592 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:00,592 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:00,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:20:00,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:00,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-21 11:20:00,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:00,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 11:20:00,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:00,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:20:00,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:00,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:00,679 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:00,680 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:00,680 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:00,680 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:00,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:20:00,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:00,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-21 11:20:00,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:00,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:20:00,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:00,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:20:00,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:00,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:00,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:00,750 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:00,751 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:00,751 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:00,751 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:00,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:20:00,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:00,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 11:20:00,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:00,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:20:00,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:00,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:20:00,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:00,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:00,771 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:00,771 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:00,771 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:00,771 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:00,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:00,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:00,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:20:00,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:00,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:00,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:00,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:20:00,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:00,837 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 24 proven. 80 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-09-21 11:20:00,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79779063] [2020-09-21 11:20:00,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:20:00,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-21 11:20:00,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558287448] [2020-09-21 11:20:00,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-21 11:20:00,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:20:00,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-21 11:20:00,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-09-21 11:20:00,840 INFO L87 Difference]: Start difference. First operand 42 states and 60 transitions. Second operand 19 states. [2020-09-21 11:20:01,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:20:01,443 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2020-09-21 11:20:01,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 11:20:01,444 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-21 11:20:01,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:20:01,445 INFO L225 Difference]: With dead ends: 50 [2020-09-21 11:20:01,445 INFO L226 Difference]: Without dead ends: 46 [2020-09-21 11:20:01,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=655, Unknown=0, NotChecked=0, Total=756 [2020-09-21 11:20:01,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-21 11:20:01,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2020-09-21 11:20:01,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-21 11:20:01,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 59 transitions. [2020-09-21 11:20:01,451 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 59 transitions. Word has length 65 [2020-09-21 11:20:01,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:20:01,452 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 59 transitions. [2020-09-21 11:20:01,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-21 11:20:01,452 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 59 transitions. [2020-09-21 11:20:01,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-21 11:20:01,453 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:20:01,453 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:20:01,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-21 11:20:01,453 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:20:01,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:20:01,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1255254341, now seen corresponding path program 14 times [2020-09-21 11:20:01,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:20:01,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516219355] [2020-09-21 11:20:01,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:20:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:01,660 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:20:01,660 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:01,660 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:01,660 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:01,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-21 11:20:01,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:01,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-21 11:20:01,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:01,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-21 11:20:01,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:20:01,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-21 11:20:01,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:01,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:20:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:01,721 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:01,721 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:01,722 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:01,722 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:01,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:20:01,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:01,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:20:01,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:01,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:01,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:01,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:01,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:01,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:20:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:01,799 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:01,800 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:01,800 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:01,800 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:01,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:20:01,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:01,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-21 11:20:01,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:01,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 11:20:01,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:01,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:20:01,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:01,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:01,938 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:01,938 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:01,938 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:01,938 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:01,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:20:01,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:01,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-21 11:20:01,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:01,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:20:01,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:01,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:20:01,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:01,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:02,025 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:02,025 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:02,025 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:02,025 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:02,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:20:02,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:02,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 11:20:02,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:02,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:20:02,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:02,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:20:02,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:02,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:02,097 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:02,097 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:02,097 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:02,098 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:02,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:02,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:02,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:20:02,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:02,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:02,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:02,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:20:02,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:02,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 11:20:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:02,206 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:02,207 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:02,207 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:02,207 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:02,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:20:02,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:02,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 11:20:02,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:02,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:20:02,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:02,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:20:02,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:02,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:02,301 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:02,301 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:02,301 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:02,302 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:02,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:20:02,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:02,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 11:20:02,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:02,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:20:02,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:02,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:20:02,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:02,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:02,414 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:02,414 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:02,414 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:02,414 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:02,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:02,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:02,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:20:02,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:02,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:02,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:02,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:20:02,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:02,450 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 4 proven. 66 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-09-21 11:20:02,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516219355] [2020-09-21 11:20:02,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:20:02,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-21 11:20:02,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339155360] [2020-09-21 11:20:02,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-21 11:20:02,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:20:02,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-21 11:20:02,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-09-21 11:20:02,452 INFO L87 Difference]: Start difference. First operand 42 states and 59 transitions. Second operand 19 states. [2020-09-21 11:20:03,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:20:03,149 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2020-09-21 11:20:03,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 11:20:03,150 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2020-09-21 11:20:03,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:20:03,151 INFO L225 Difference]: With dead ends: 50 [2020-09-21 11:20:03,152 INFO L226 Difference]: Without dead ends: 46 [2020-09-21 11:20:03,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=672, Unknown=0, NotChecked=0, Total=756 [2020-09-21 11:20:03,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-21 11:20:03,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2020-09-21 11:20:03,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-21 11:20:03,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 58 transitions. [2020-09-21 11:20:03,157 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 58 transitions. Word has length 58 [2020-09-21 11:20:03,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:20:03,158 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 58 transitions. [2020-09-21 11:20:03,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-21 11:20:03,158 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 58 transitions. [2020-09-21 11:20:03,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-21 11:20:03,159 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:20:03,159 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:20:03,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-21 11:20:03,159 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:20:03,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:20:03,160 INFO L82 PathProgramCache]: Analyzing trace with hash -746065050, now seen corresponding path program 15 times [2020-09-21 11:20:03,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:20:03,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321470796] [2020-09-21 11:20:03,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:20:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:03,321 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:20:03,321 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:03,321 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:03,321 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:03,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-21 11:20:03,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:03,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-21 11:20:03,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:03,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-21 11:20:03,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:20:03,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-21 11:20:03,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:03,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:20:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:03,369 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:03,369 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:03,369 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:03,369 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:03,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:20:03,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:03,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:20:03,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:03,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:03,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:03,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:03,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:03,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:20:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:03,430 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:03,430 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:03,430 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:03,430 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:03,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:20:03,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:03,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-21 11:20:03,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:03,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 11:20:03,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:03,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:20:03,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:03,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:03,518 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:03,518 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:03,518 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:03,518 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:03,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:20:03,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:03,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 11:20:03,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:03,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:20:03,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:03,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:20:03,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:03,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:03,599 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:03,599 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:03,599 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:03,599 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:03,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:20:03,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:03,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 11:20:03,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:03,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:20:03,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:03,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:20:03,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:03,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:03,682 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:03,682 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:03,683 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:03,683 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:03,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:03,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:03,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:20:03,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:03,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:03,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:03,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:20:03,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:03,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 11:20:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:03,750 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:03,750 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:03,750 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:03,751 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:03,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:20:03,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:03,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 11:20:03,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:03,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:20:03,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:03,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:20:03,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:03,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:03,824 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:03,825 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:03,825 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:03,825 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:03,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:03,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:03,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:20:03,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:03,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:03,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:03,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:20:03,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:03,903 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 11 proven. 58 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-21 11:20:03,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321470796] [2020-09-21 11:20:03,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:20:03,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-21 11:20:03,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056417259] [2020-09-21 11:20:03,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-21 11:20:03,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:20:03,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-21 11:20:03,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2020-09-21 11:20:03,908 INFO L87 Difference]: Start difference. First operand 42 states and 58 transitions. Second operand 21 states. [2020-09-21 11:20:04,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:20:04,585 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2020-09-21 11:20:04,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 11:20:04,586 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 51 [2020-09-21 11:20:04,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:20:04,587 INFO L225 Difference]: With dead ends: 50 [2020-09-21 11:20:04,587 INFO L226 Difference]: Without dead ends: 46 [2020-09-21 11:20:04,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2020-09-21 11:20:04,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-21 11:20:04,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2020-09-21 11:20:04,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-21 11:20:04,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 57 transitions. [2020-09-21 11:20:04,599 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 57 transitions. Word has length 51 [2020-09-21 11:20:04,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:20:04,599 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 57 transitions. [2020-09-21 11:20:04,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-21 11:20:04,600 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 57 transitions. [2020-09-21 11:20:04,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-21 11:20:04,601 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:20:04,601 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:20:04,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-21 11:20:04,602 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:20:04,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:20:04,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1677321585, now seen corresponding path program 16 times [2020-09-21 11:20:04,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:20:04,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175836972] [2020-09-21 11:20:04,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:20:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:04,966 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:20:04,967 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:04,967 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:04,967 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:04,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-21 11:20:04,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:04,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-09-21 11:20:04,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:04,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-09-21 11:20:04,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:20:04,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-21 11:20:04,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:05,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:20:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:05,022 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:05,022 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:05,023 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:05,023 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:05,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:20:05,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:05,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:20:05,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:05,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:05,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:05,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:05,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:05,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:20:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:05,103 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:05,103 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:05,104 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:05,104 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:05,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:20:05,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:05,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-21 11:20:05,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:05,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 11:20:05,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:05,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:20:05,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:05,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:05,218 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:05,219 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:05,219 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:05,219 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:05,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:20:05,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:05,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-21 11:20:05,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:05,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:20:05,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:05,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:20:05,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:05,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:05,299 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:05,299 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:05,299 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:05,300 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:05,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:20:05,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:05,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-21 11:20:05,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:05,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:20:05,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:05,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:20:05,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:05,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:05,364 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:05,365 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:05,365 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:05,365 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:05,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:05,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:05,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:20:05,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:05,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:20:05,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:05,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 11:20:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:05,538 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:05,538 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:05,538 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:05,538 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:05,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:20:05,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:05,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-21 11:20:05,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 11:20:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 11:20:05,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:05,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:05,690 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:05,690 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:05,690 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:05,691 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:05,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:20:05,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:05,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-21 11:20:05,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:05,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 11:20:05,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:05,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:20:05,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:05,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:05,828 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:05,828 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:05,828 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:05,829 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:05,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:20:05,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:05,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-21 11:20:05,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:05,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:20:05,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:05,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:20:05,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:05,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:05,939 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:05,939 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:05,940 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:05,940 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:05,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:20:05,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:05,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 11:20:05,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:05,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:20:05,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:05,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:20:05,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:06,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:06,096 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:06,097 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:06,097 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:06,097 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:06,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:06,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:06,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:20:06,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:06,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:06,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:06,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:20:06,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:06,157 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 6 proven. 131 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-09-21 11:20:06,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175836972] [2020-09-21 11:20:06,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:20:06,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-21 11:20:06,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342613715] [2020-09-21 11:20:06,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-21 11:20:06,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:20:06,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-21 11:20:06,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=503, Unknown=0, NotChecked=0, Total=552 [2020-09-21 11:20:06,160 INFO L87 Difference]: Start difference. First operand 42 states and 57 transitions. Second operand 24 states. [2020-09-21 11:20:07,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:20:07,107 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2020-09-21 11:20:07,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 11:20:07,108 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 72 [2020-09-21 11:20:07,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:20:07,109 INFO L225 Difference]: With dead ends: 50 [2020-09-21 11:20:07,109 INFO L226 Difference]: Without dead ends: 46 [2020-09-21 11:20:07,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=117, Invalid=1073, Unknown=0, NotChecked=0, Total=1190 [2020-09-21 11:20:07,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-21 11:20:07,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-21 11:20:07,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-21 11:20:07,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2020-09-21 11:20:07,121 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 53 transitions. Word has length 72 [2020-09-21 11:20:07,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:20:07,121 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 53 transitions. [2020-09-21 11:20:07,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-21 11:20:07,121 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 53 transitions. [2020-09-21 11:20:07,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-21 11:20:07,122 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:20:07,122 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:20:07,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-21 11:20:07,125 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:20:07,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:20:07,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1124697265, now seen corresponding path program 17 times [2020-09-21 11:20:07,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:20:07,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135552691] [2020-09-21 11:20:07,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:20:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:07,467 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-21 11:20:07,467 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:07,467 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:07,467 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:07,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-21 11:20:07,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:07,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-09-21 11:20:07,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:07,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-09-21 11:20:07,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:20:07,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-21 11:20:07,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:07,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:20:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:07,531 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:07,532 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:07,532 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:07,532 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:07,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:20:07,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:07,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:20:07,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:07,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:07,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:07,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:07,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:07,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:20:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:07,560 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:07,561 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:07,561 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:07,562 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:07,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:20:07,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:07,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 11:20:07,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:07,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 11:20:07,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:07,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:20:07,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:07,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:07,635 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:07,635 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:07,635 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:07,635 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:07,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:07,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:07,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:20:07,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:07,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:07,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:07,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:20:07,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:07,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 11:20:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:07,857 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:07,858 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:07,858 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:07,858 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:07,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-21 11:20:07,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:07,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-21 11:20:07,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:07,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-21 11:20:07,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:07,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-21 11:20:07,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:07,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:08,054 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:08,054 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:08,055 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:08,055 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:08,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-21 11:20:08,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:08,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-21 11:20:08,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:08,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-21 11:20:08,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:08,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 11:20:08,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:08,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:08,239 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:08,239 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:08,240 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:08,240 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:08,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:20:08,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:08,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-21 11:20:08,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:08,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 11:20:08,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:08,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 11:20:08,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:08,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:08,389 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:08,389 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:08,389 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:08,389 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:08,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:20:08,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:08,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-21 11:20:08,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:08,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 11:20:08,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:08,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:20:08,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:08,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:08,502 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:08,503 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:08,503 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:08,503 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:08,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:20:08,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:08,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-21 11:20:08,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:08,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:20:08,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:08,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:20:08,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:08,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:08,609 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:08,610 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:08,610 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:08,610 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:08,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:20:08,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:08,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 11:20:08,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:08,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:20:08,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:08,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:20:08,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:08,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:08,740 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:08,740 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:08,741 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:08,741 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:08,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:08,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:08,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:20:08,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:08,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:08,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:08,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:20:08,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:08,831 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 12 proven. 107 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-09-21 11:20:08,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135552691] [2020-09-21 11:20:08,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:20:08,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-21 11:20:08,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047008530] [2020-09-21 11:20:08,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-21 11:20:08,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:20:08,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-21 11:20:08,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2020-09-21 11:20:08,834 INFO L87 Difference]: Start difference. First operand 40 states and 53 transitions. Second operand 23 states. [2020-09-21 11:20:09,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:20:09,787 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2020-09-21 11:20:09,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-21 11:20:09,788 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 72 [2020-09-21 11:20:09,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:20:09,790 INFO L225 Difference]: With dead ends: 46 [2020-09-21 11:20:09,790 INFO L226 Difference]: Without dead ends: 40 [2020-09-21 11:20:09,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 16 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=156, Invalid=1250, Unknown=0, NotChecked=0, Total=1406 [2020-09-21 11:20:09,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-21 11:20:09,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-21 11:20:09,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-21 11:20:09,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2020-09-21 11:20:09,796 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 52 transitions. Word has length 72 [2020-09-21 11:20:09,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:20:09,796 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 52 transitions. [2020-09-21 11:20:09,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-21 11:20:09,796 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 52 transitions. [2020-09-21 11:20:09,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-21 11:20:09,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:20:09,797 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:20:09,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-21 11:20:09,798 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:20:09,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:20:09,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1806425208, now seen corresponding path program 18 times [2020-09-21 11:20:09,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:20:09,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624286231] [2020-09-21 11:20:09,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:20:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:10,151 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:20:10,151 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:10,151 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:10,152 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:10,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-21 11:20:10,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:10,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-09-21 11:20:10,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:10,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-09-21 11:20:10,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:20:10,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-21 11:20:10,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:10,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:20:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:10,208 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:10,208 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:10,208 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:10,208 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:10,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:20:10,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:10,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:20:10,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:10,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:10,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:10,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:10,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:10,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:20:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:10,249 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:10,250 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:10,250 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:10,250 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:10,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:20:10,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:10,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 11:20:10,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:10,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 11:20:10,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:10,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:20:10,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:10,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:10,328 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:10,328 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:10,328 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:10,329 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:10,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:20:10,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:10,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 11:20:10,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:10,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:20:10,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:10,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:20:10,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:10,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:10,398 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:10,399 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:10,399 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:10,399 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:10,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:10,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:10,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:20:10,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:10,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:10,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:10,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:20:10,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:10,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 11:20:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:10,633 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:10,633 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:10,633 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:10,634 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:10,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-21 11:20:10,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:10,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-21 11:20:10,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:10,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-21 11:20:10,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:10,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-21 11:20:10,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:10,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:10,853 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:10,853 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:10,853 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:10,854 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:10,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-21 11:20:10,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:10,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-21 11:20:10,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:10,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-21 11:20:10,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:10,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 11:20:10,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:10,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:11,063 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:11,063 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:11,063 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:11,063 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:11,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:20:11,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:11,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-21 11:20:11,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:11,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 11:20:11,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:11,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 11:20:11,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:11,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:11,231 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:11,232 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:11,232 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:11,233 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:11,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:20:11,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:11,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-21 11:20:11,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:11,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 11:20:11,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:11,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:20:11,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:11,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:11,387 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:11,388 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:11,388 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:11,388 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:11,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:20:11,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:11,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-21 11:20:11,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:11,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:20:11,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:11,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:20:11,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:11,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:11,526 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:11,527 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:11,527 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:11,527 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:11,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:20:11,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:11,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 11:20:11,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:11,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:20:11,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:11,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:20:11,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:11,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:11,651 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:11,651 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:11,652 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:11,652 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:11,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:11,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:11,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:20:11,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:11,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:11,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:11,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:20:11,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:11,698 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 12 proven. 136 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2020-09-21 11:20:11,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624286231] [2020-09-21 11:20:11,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:20:11,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-21 11:20:11,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097488464] [2020-09-21 11:20:11,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-21 11:20:11,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:20:11,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-21 11:20:11,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=552, Unknown=0, NotChecked=0, Total=600 [2020-09-21 11:20:11,701 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand 25 states. [2020-09-21 11:20:13,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:20:13,048 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2020-09-21 11:20:13,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-21 11:20:13,050 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 79 [2020-09-21 11:20:13,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:20:13,051 INFO L225 Difference]: With dead ends: 53 [2020-09-21 11:20:13,052 INFO L226 Difference]: Without dead ends: 49 [2020-09-21 11:20:13,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 17 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=125, Invalid=1435, Unknown=0, NotChecked=0, Total=1560 [2020-09-21 11:20:13,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-21 11:20:13,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-09-21 11:20:13,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-21 11:20:13,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2020-09-21 11:20:13,062 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 61 transitions. Word has length 79 [2020-09-21 11:20:13,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:20:13,066 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 61 transitions. [2020-09-21 11:20:13,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-21 11:20:13,066 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 61 transitions. [2020-09-21 11:20:13,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-21 11:20:13,068 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:20:13,068 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:20:13,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-21 11:20:13,068 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:20:13,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:20:13,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1615348441, now seen corresponding path program 19 times [2020-09-21 11:20:13,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:20:13,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177594611] [2020-09-21 11:20:13,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:20:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:13,575 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:20:13,576 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:13,576 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:13,576 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:13,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-21 11:20:13,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:13,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 480 [2020-09-21 11:20:13,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:13,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-09-21 11:20:13,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:20:13,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-21 11:20:13,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:13,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:20:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:13,652 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:13,653 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:13,653 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:13,653 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:13,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:20:13,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:13,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:20:13,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:13,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:13,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:13,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:13,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:13,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:20:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:13,717 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:13,718 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:13,718 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:13,718 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:13,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:20:13,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:13,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-21 11:20:13,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:13,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 11:20:13,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:13,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:20:13,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:13,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:13,816 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:13,816 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:13,817 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:13,817 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:13,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:20:13,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:13,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 11:20:13,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:13,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:20:13,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:13,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:20:13,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:13,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:13,902 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:13,902 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:13,902 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:13,902 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:13,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:20:13,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:13,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 11:20:13,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:13,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:20:13,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:13,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:20:13,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:13,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:13,993 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:13,994 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:13,994 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:13,994 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:13,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:13,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:13,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:20:13,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:13,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:13,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:13,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:20:13,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:14,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 11:20:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:14,261 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:14,261 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:14,262 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:14,262 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:14,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-21 11:20:14,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:14,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-21 11:20:14,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-21 11:20:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-21 11:20:14,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:14,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:14,506 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:14,506 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:14,506 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:14,506 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:14,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-21 11:20:14,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:14,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-21 11:20:14,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:14,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-21 11:20:14,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:14,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 11:20:14,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:14,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:14,732 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:14,732 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:14,732 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:14,732 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:14,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:20:14,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:14,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-21 11:20:14,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:14,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 11:20:14,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:14,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 11:20:14,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:14,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:14,899 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:14,900 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:14,900 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:14,900 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:14,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:20:14,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:14,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-21 11:20:14,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:14,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 11:20:14,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:14,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:20:14,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:15,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:15,055 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:15,056 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:15,056 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:15,056 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:15,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:20:15,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:15,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-21 11:20:15,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:20:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:20:15,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:15,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:15,199 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:15,199 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:15,199 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:15,200 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:15,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:20:15,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:15,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 11:20:15,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:15,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:20:15,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:15,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:20:15,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:15,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:15,338 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:15,338 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:15,338 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:15,338 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:15,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:15,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:15,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:20:15,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:15,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:15,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:15,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:20:15,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:15,422 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 35 proven. 192 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-09-21 11:20:15,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177594611] [2020-09-21 11:20:15,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:20:15,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-09-21 11:20:15,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649656318] [2020-09-21 11:20:15,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-09-21 11:20:15,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:20:15,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-09-21 11:20:15,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=808, Unknown=0, NotChecked=0, Total=870 [2020-09-21 11:20:15,424 INFO L87 Difference]: Start difference. First operand 45 states and 61 transitions. Second operand 30 states. [2020-09-21 11:20:16,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:20:16,976 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2020-09-21 11:20:16,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-21 11:20:16,977 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 86 [2020-09-21 11:20:16,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:20:16,978 INFO L225 Difference]: With dead ends: 53 [2020-09-21 11:20:16,978 INFO L226 Difference]: Without dead ends: 49 [2020-09-21 11:20:16,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 16 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=168, Invalid=1812, Unknown=0, NotChecked=0, Total=1980 [2020-09-21 11:20:16,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-21 11:20:16,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-09-21 11:20:16,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-21 11:20:16,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-09-21 11:20:16,984 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 86 [2020-09-21 11:20:16,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:20:16,985 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-09-21 11:20:16,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-09-21 11:20:16,985 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-09-21 11:20:16,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-21 11:20:16,986 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:20:16,986 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:20:16,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-21 11:20:16,986 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:20:16,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:20:16,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1830896665, now seen corresponding path program 20 times [2020-09-21 11:20:16,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:20:16,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [741948737] [2020-09-21 11:20:16,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:20:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:17,273 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:20:17,273 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:17,273 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:17,274 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:17,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-21 11:20:17,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:17,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-09-21 11:20:17,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:17,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-09-21 11:20:17,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:20:17,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-21 11:20:17,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:17,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:20:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:17,317 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:17,318 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:17,318 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:17,318 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:17,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:20:17,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:17,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:20:17,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:17,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:17,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:17,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:17,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:17,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:20:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:17,400 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:17,401 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:17,401 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:17,401 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:17,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:20:17,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:17,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-21 11:20:17,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:17,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 11:20:17,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:17,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 11:20:17,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:17,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:17,522 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:17,522 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:17,522 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:17,522 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:17,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:20:17,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:17,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-21 11:20:17,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:17,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 11:20:17,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:17,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:20:17,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:17,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:17,628 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:17,629 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:17,629 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:17,629 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:17,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:20:17,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:17,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 11:20:17,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:17,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:20:17,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:17,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:20:17,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:17,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:17,725 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:17,726 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:17,726 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:17,726 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:17,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:20:17,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:17,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 11:20:17,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:17,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:20:17,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:17,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:20:17,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:17,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:17,811 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:17,812 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:17,812 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:17,812 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:17,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:17,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:17,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:20:17,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:17,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:17,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:17,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:20:17,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:17,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 11:20:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:17,947 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:17,948 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:17,948 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:17,948 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:17,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:20:17,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:17,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-21 11:20:17,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:17,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 11:20:17,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:17,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:20:17,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:18,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:18,077 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:18,077 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:18,077 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:18,078 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:18,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:20:18,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:18,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-21 11:20:18,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:18,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:20:18,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:18,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:20:18,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:18,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:18,200 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:18,200 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:18,200 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:18,201 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:18,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:20:18,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:18,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 11:20:18,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:18,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:20:18,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:18,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:20:18,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:18,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:18,358 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:18,358 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:18,358 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:18,359 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:18,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:18,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:18,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:20:18,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:18,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:18,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:18,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:20:18,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:18,428 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 6 proven. 133 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-09-21 11:20:18,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [741948737] [2020-09-21 11:20:18,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:20:18,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-21 11:20:18,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166874144] [2020-09-21 11:20:18,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-21 11:20:18,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:20:18,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-21 11:20:18,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=550, Unknown=0, NotChecked=0, Total=600 [2020-09-21 11:20:18,431 INFO L87 Difference]: Start difference. First operand 43 states and 57 transitions. Second operand 25 states. [2020-09-21 11:20:19,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:20:19,548 INFO L93 Difference]: Finished difference Result 53 states and 72 transitions. [2020-09-21 11:20:19,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 11:20:19,549 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 72 [2020-09-21 11:20:19,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:20:19,551 INFO L225 Difference]: With dead ends: 53 [2020-09-21 11:20:19,551 INFO L226 Difference]: Without dead ends: 49 [2020-09-21 11:20:19,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=119, Invalid=1141, Unknown=0, NotChecked=0, Total=1260 [2020-09-21 11:20:19,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-21 11:20:19,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-09-21 11:20:19,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-21 11:20:19,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 65 transitions. [2020-09-21 11:20:19,556 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 65 transitions. Word has length 72 [2020-09-21 11:20:19,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:20:19,557 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 65 transitions. [2020-09-21 11:20:19,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-21 11:20:19,557 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 65 transitions. [2020-09-21 11:20:19,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-21 11:20:19,558 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:20:19,558 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:20:19,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-21 11:20:19,558 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:20:19,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:20:19,558 INFO L82 PathProgramCache]: Analyzing trace with hash -2003180303, now seen corresponding path program 21 times [2020-09-21 11:20:19,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:20:19,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550610120] [2020-09-21 11:20:19,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:20:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:19,747 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:20:19,747 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:19,747 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:19,747 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:19,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-21 11:20:19,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:19,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-21 11:20:19,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:19,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-21 11:20:19,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:20:19,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-21 11:20:19,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:19,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:20:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:19,835 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:19,836 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:19,836 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:19,836 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:19,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:20:19,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:19,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:20:19,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:19,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:19,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:19,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:19,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:19,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:20:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:19,912 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:19,913 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:19,913 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:19,913 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:19,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:20:19,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:19,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-21 11:20:19,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:19,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 11:20:19,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:19,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 11:20:19,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:19,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:20,037 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:20,037 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:20,037 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:20,037 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:20,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:20:20,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:20,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-21 11:20:20,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:20,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 11:20:20,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:20,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:20:20,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:20,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:20,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:20,150 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:20,150 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:20,150 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:20,150 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:20,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:20:20,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:20,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 11:20:20,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:20,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:20:20,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:20,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:20:20,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:20,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:20,234 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:20,234 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:20,234 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:20,234 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:20,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:20:20,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:20,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 11:20:20,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:20,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:20:20,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:20,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:20:20,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:20,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:20,357 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:20,358 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:20,358 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:20,358 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:20,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:20,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:20,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:20:20,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:20,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:20,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:20,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:20:20,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:20,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 11:20:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:20,449 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:20,449 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:20,450 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:20,450 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:20,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:20:20,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:20,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 11:20:20,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:20,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:20:20,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:20,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:20:20,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:20,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:20,559 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:20,559 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:20,559 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:20,559 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:20,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:20,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:20,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:20:20,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:20,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:20,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:20,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:20:20,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:20,646 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 14 proven. 81 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-21 11:20:20,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550610120] [2020-09-21 11:20:20,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:20:20,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-21 11:20:20,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098742786] [2020-09-21 11:20:20,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-21 11:20:20,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:20:20,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-21 11:20:20,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2020-09-21 11:20:20,648 INFO L87 Difference]: Start difference. First operand 45 states and 65 transitions. Second operand 23 states. [2020-09-21 11:20:21,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:20:21,625 INFO L93 Difference]: Finished difference Result 53 states and 71 transitions. [2020-09-21 11:20:21,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 11:20:21,626 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 58 [2020-09-21 11:20:21,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:20:21,627 INFO L225 Difference]: With dead ends: 53 [2020-09-21 11:20:21,627 INFO L226 Difference]: Without dead ends: 49 [2020-09-21 11:20:21,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2020-09-21 11:20:21,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-21 11:20:21,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-09-21 11:20:21,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-21 11:20:21,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 64 transitions. [2020-09-21 11:20:21,633 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 64 transitions. Word has length 58 [2020-09-21 11:20:21,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:20:21,633 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 64 transitions. [2020-09-21 11:20:21,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-21 11:20:21,633 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 64 transitions. [2020-09-21 11:20:21,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-21 11:20:21,634 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:20:21,634 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:20:21,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-21 11:20:21,634 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:20:21,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:20:21,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1394734426, now seen corresponding path program 22 times [2020-09-21 11:20:21,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:20:21,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945332134] [2020-09-21 11:20:21,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:20:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:21,878 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:20:21,878 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:21,878 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:21,879 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:21,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 11:20:21,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:21,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-09-21 11:20:21,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:21,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-21 11:20:21,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:20:21,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-21 11:20:21,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:21,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:20:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:21,926 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:21,926 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:21,926 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:21,926 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:21,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:20:21,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:21,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:20:21,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:21,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:21,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:21,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:21,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:21,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:20:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:22,030 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:22,031 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:22,031 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:22,031 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:22,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:20:22,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:22,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-21 11:20:22,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 11:20:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 11:20:22,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:22,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:22,167 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:22,168 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:22,168 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:22,168 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:22,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:20:22,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:22,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-21 11:20:22,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:22,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 11:20:22,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:22,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:20:22,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:22,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:22,299 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:22,300 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:22,300 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:22,300 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:22,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:20:22,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:22,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-21 11:20:22,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:22,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:20:22,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:22,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:20:22,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:22,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:22,396 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:22,396 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:22,396 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:22,396 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:22,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:20:22,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:22,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 11:20:22,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:22,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:20:22,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:22,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:20:22,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:22,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:22,490 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:22,490 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:22,490 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:22,490 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:22,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:22,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:22,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:20:22,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:22,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:22,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:22,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:20:22,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:22,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 11:20:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:22,608 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:22,609 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:22,609 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:22,609 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:22,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:20:22,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:22,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-21 11:20:22,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:22,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:20:22,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:22,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:20:22,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:22,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:22,723 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:20:22,723 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:22,723 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:22,723 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:22,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:20:22,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:22,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 11:20:22,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:22,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:20:22,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:22,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:20:22,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:22,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:22,821 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:22,821 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:22,822 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:22,822 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:22,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:22,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:22,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:20:22,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:22,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:22,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:22,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:20:22,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 6 proven. 89 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-09-21 11:20:22,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945332134] [2020-09-21 11:20:22,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:20:22,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-21 11:20:22,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775977093] [2020-09-21 11:20:22,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-21 11:20:22,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:20:22,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-21 11:20:22,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-09-21 11:20:22,902 INFO L87 Difference]: Start difference. First operand 45 states and 64 transitions. Second operand 22 states. [2020-09-21 11:20:23,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:20:23,883 INFO L93 Difference]: Finished difference Result 53 states and 70 transitions. [2020-09-21 11:20:23,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 11:20:23,884 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 65 [2020-09-21 11:20:23,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:20:23,885 INFO L225 Difference]: With dead ends: 53 [2020-09-21 11:20:23,885 INFO L226 Difference]: Without dead ends: 49 [2020-09-21 11:20:23,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 13 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=101, Invalid=955, Unknown=0, NotChecked=0, Total=1056 [2020-09-21 11:20:23,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-21 11:20:23,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-09-21 11:20:23,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-21 11:20:23,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 63 transitions. [2020-09-21 11:20:23,891 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 63 transitions. Word has length 65 [2020-09-21 11:20:23,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:20:23,892 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 63 transitions. [2020-09-21 11:20:23,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-21 11:20:23,892 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 63 transitions. [2020-09-21 11:20:23,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-21 11:20:23,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:20:23,893 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:20:23,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-09-21 11:20:23,894 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:20:23,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:20:23,894 INFO L82 PathProgramCache]: Analyzing trace with hash -335786642, now seen corresponding path program 23 times [2020-09-21 11:20:23,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:20:23,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553201998] [2020-09-21 11:20:23,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:20:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat