/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --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/EvenOdd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:08:19,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:08:19,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:08:19,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:08:19,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:08:19,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:08:19,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:08:19,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:08:19,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:08:19,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:08:19,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:08:19,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:08:19,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:08:19,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:08:19,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:08:19,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:08:19,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:08:19,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:08:19,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:08:19,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:08:19,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:08:19,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:08:19,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:08:19,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:08:19,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:08:19,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:08:19,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:08:19,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:08:19,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:08:19,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:08:19,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:08:19,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:08:19,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:08:19,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:08:19,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:08:19,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:08:19,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:08:19,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:08:19,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:08:19,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:08:19,898 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:08:19,899 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 [2020-09-25 03:08:19,948 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:08:19,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:08:19,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:08:19,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:08:19,951 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:08:19,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:08:19,952 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:08:19,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:08:19,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:08:19,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:08:19,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:08:19,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:08:19,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:08:19,955 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:08:19,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:08:19,955 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:08:19,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:08:19,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:08:19,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:08:19,956 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:08:19,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:08:19,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:08:19,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:08:19,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:08:19,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:08:19,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:08:19,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:08:19,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:08:19,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:08:19,958 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.rcfgbuilder: Size of a code block -> SingleStatement 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;enumeration-timeout=5000;interpolation-heuristic=WIDEST;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;enumeration-timeout=5000;interpolation-heuristic=WIDEST;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;enumeration-timeout=5000;interpolation-heuristic=WIDEST;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;enumeration-timeout=5000;interpolation-heuristic=WIDEST;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;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-09-25 03:08:20,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:08:20,418 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:08:20,422 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:08:20,424 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:08:20,425 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:08:20,426 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-09-25 03:08:20,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f143ca769/b0d558b2aa904e9caada425f0b1d0105/FLAGfd47f1072 [2020-09-25 03:08:21,101 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:08:21,101 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-09-25 03:08:21,110 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f143ca769/b0d558b2aa904e9caada425f0b1d0105/FLAGfd47f1072 [2020-09-25 03:08:21,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f143ca769/b0d558b2aa904e9caada425f0b1d0105 [2020-09-25 03:08:21,445 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:08:21,451 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:08:21,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:08:21,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:08:21,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:08:21,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:08:21" (1/1) ... [2020-09-25 03:08:21,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:21, skipping insertion in model container [2020-09-25 03:08:21,466 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:08:21" (1/1) ... [2020-09-25 03:08:21,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:08:21,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:08:21,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:08:21,762 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:08:21,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:08:21,794 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:08:21,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:21 WrapperNode [2020-09-25 03:08:21,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:08:21,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:08:21,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:08:21,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:08:21,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:21" (1/1) ... [2020-09-25 03:08:21,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:21" (1/1) ... [2020-09-25 03:08:21,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:21" (1/1) ... [2020-09-25 03:08:21,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:21" (1/1) ... [2020-09-25 03:08:21,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:21" (1/1) ... [2020-09-25 03:08:21,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:21" (1/1) ... [2020-09-25 03:08:21,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:21" (1/1) ... [2020-09-25 03:08:21,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:08:21,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:08:21,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:08:21,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:08:21,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:21" (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 [2020-09-25 03:08:21,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:08:21,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:08:21,992 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2020-09-25 03:08:21,992 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2020-09-25 03:08:21,992 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:08:21,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:08:21,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:08:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2020-09-25 03:08:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2020-09-25 03:08:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:08:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:08:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:08:22,253 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:08:22,253 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 03:08:22,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:08:22 BoogieIcfgContainer [2020-09-25 03:08:22,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:08:22,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:08:22,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:08:22,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:08:22,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:08:21" (1/3) ... [2020-09-25 03:08:22,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77accecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:08:22, skipping insertion in model container [2020-09-25 03:08:22,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:21" (2/3) ... [2020-09-25 03:08:22,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77accecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:08:22, skipping insertion in model container [2020-09-25 03:08:22,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:08:22" (3/3) ... [2020-09-25 03:08:22,288 INFO L109 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2020-09-25 03:08:22,301 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:08:22,312 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:08:22,333 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:08:22,363 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:08:22,363 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:08:22,363 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:08:22,364 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:08:22,364 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:08:22,364 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:08:22,364 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:08:22,364 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:08:22,386 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-25 03:08:22,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 03:08:22,394 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:22,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:22,395 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:22,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:22,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1047957633, now seen corresponding path program 1 times [2020-09-25 03:08:22,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:22,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097975728] [2020-09-25 03:08:22,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:22,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:22,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:22,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 03:08:22,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:22,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-25 03:08:22,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:08:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 03:08:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 03:08:22,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:08:23,072 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 14 [2020-09-25 03:08:23,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:23,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:23,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:23,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:23,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:08:23,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:23,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:23,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:23,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:23,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:23,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:08:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:23,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:23,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:08:23,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:23,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 03:08:23,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:23,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:08:23,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:23,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:23,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:23,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:08:23,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097975728] [2020-09-25 03:08:23,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:08:23,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 03:08:23,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509384548] [2020-09-25 03:08:23,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:08:23,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:23,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:08:23,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:08:23,346 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 8 states. [2020-09-25 03:08:23,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:23,586 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2020-09-25 03:08:23,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 03:08:23,589 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-09-25 03:08:23,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:23,604 INFO L225 Difference]: With dead ends: 60 [2020-09-25 03:08:23,604 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 03:08:23,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:08:23,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 03:08:23,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-25 03:08:23,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 03:08:23,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-09-25 03:08:23,678 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 20 [2020-09-25 03:08:23,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:23,678 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-09-25 03:08:23,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:08:23,679 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-09-25 03:08:23,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-25 03:08:23,681 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:23,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:23,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:08:23,682 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:23,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:23,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1743555941, now seen corresponding path program 1 times [2020-09-25 03:08:23,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:23,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183491173] [2020-09-25 03:08:23,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:23,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:23,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:23,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 03:08:23,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:23,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-25 03:08:23,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:23,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:08:23,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 03:08:23,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 03:08:23,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:24,082 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 12 [2020-09-25 03:08:24,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:24,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:24,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:24,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:24,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:24,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:08:24,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:24,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:24,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:24,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:24,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:24,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:08:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:24,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:24,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:24,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:24,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:24,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 03:08:24,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:24,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:08:24,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:24,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:08:24,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:24,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:08:24,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183491173] [2020-09-25 03:08:24,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:08:24,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 03:08:24,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860265011] [2020-09-25 03:08:24,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:08:24,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:24,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:08:24,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:08:24,275 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 8 states. [2020-09-25 03:08:24,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:24,422 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2020-09-25 03:08:24,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 03:08:24,423 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-09-25 03:08:24,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:24,425 INFO L225 Difference]: With dead ends: 49 [2020-09-25 03:08:24,425 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 03:08:24,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:08:24,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 03:08:24,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-25 03:08:24,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 03:08:24,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-09-25 03:08:24,435 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 21 [2020-09-25 03:08:24,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:24,436 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-09-25 03:08:24,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:08:24,436 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-09-25 03:08:24,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 03:08:24,438 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:24,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:24,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:08:24,438 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:24,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:24,439 INFO L82 PathProgramCache]: Analyzing trace with hash 698419476, now seen corresponding path program 1 times [2020-09-25 03:08:24,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:24,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116304623] [2020-09-25 03:08:24,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:24,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:24,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:24,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:24,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 03:08:24,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:24,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-09-25 03:08:24,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:24,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:08:24,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 03:08:24,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:08:24,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:25,021 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 15 [2020-09-25 03:08:25,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:25,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:25,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:25,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:25,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:25,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:08:25,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:25,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:25,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:25,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:25,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:25,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:08:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:25,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:25,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:25,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:25,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 03:08:25,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:25,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 03:08:25,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:25,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:08:25,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:25,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 03:08:25,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:25,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:25,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:25,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:25,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:08:25,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:25,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 03:08:25,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:25,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:08:25,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:25,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:25,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:25,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:08:25,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116304623] [2020-09-25 03:08:25,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:08:25,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 03:08:25,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338622054] [2020-09-25 03:08:25,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:08:25,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:25,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:08:25,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:08:25,302 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 11 states. [2020-09-25 03:08:25,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:25,668 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2020-09-25 03:08:25,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 03:08:25,668 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-25 03:08:25,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:25,670 INFO L225 Difference]: With dead ends: 54 [2020-09-25 03:08:25,670 INFO L226 Difference]: Without dead ends: 47 [2020-09-25 03:08:25,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:08:25,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-25 03:08:25,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-09-25 03:08:25,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 03:08:25,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-09-25 03:08:25,689 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 29 [2020-09-25 03:08:25,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:25,690 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-09-25 03:08:25,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:08:25,690 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-09-25 03:08:25,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 03:08:25,693 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:25,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:25,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:08:25,697 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:25,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:25,697 INFO L82 PathProgramCache]: Analyzing trace with hash 735393428, now seen corresponding path program 1 times [2020-09-25 03:08:25,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:25,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337906988] [2020-09-25 03:08:25,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:25,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:25,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:25,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 03:08:25,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:25,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 03:08:25,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:25,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:08:25,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 03:08:25,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 03:08:25,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:26,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:26,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:26,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:26,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:26,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:26,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:08:26,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:26,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:26,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:26,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:26,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:26,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:08:26,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:26,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:26,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:26,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 03:08:26,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:26,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 03:08:26,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:26,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:08:26,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:26,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 03:08:26,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:26,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:26,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:26,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:26,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:26,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:26,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 03:08:26,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:26,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:08:26,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:26,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:08:26,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:26,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:08:26,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337906988] [2020-09-25 03:08:26,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:08:26,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 03:08:26,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632565893] [2020-09-25 03:08:26,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:08:26,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:26,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:08:26,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:08:26,291 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 11 states. [2020-09-25 03:08:26,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:26,549 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2020-09-25 03:08:26,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 03:08:26,550 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-09-25 03:08:26,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:26,551 INFO L225 Difference]: With dead ends: 59 [2020-09-25 03:08:26,552 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 03:08:26,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:08:26,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 03:08:26,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2020-09-25 03:08:26,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 03:08:26,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-09-25 03:08:26,560 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 30 [2020-09-25 03:08:26,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:26,561 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-09-25 03:08:26,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:08:26,561 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-09-25 03:08:26,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 03:08:26,563 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:26,563 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:26,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:08:26,563 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:26,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:26,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1128861445, now seen corresponding path program 1 times [2020-09-25 03:08:26,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:26,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302105792] [2020-09-25 03:08:26,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:26,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:26,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:26,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:26,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 03:08:26,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:26,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-09-25 03:08:26,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:26,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 03:08:26,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 03:08:26,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 03:08:26,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:26,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:26,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:26,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:26,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:26,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:26,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:08:26,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:26,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:26,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:26,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:26,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:26,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:08:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:26,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:27,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:27,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:27,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:08:27,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:27,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 03:08:27,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:27,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 03:08:27,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:27,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:08:27,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:27,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:27,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:27,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:27,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:27,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 03:08:27,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:27,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 03:08:27,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:27,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:08:27,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:27,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 03:08:27,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:27,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:27,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:27,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:27,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:08:27,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:27,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 03:08:27,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:27,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:08:27,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:27,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:27,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 03:08:27,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302105792] [2020-09-25 03:08:27,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:27,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 03:08:27,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245731699] [2020-09-25 03:08:27,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 03:08:27,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:27,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 03:08:27,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:08:27,385 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 13 states. [2020-09-25 03:08:27,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:27,750 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-09-25 03:08:27,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 03:08:27,751 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-09-25 03:08:27,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:27,752 INFO L225 Difference]: With dead ends: 64 [2020-09-25 03:08:27,752 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 03:08:27,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2020-09-25 03:08:27,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 03:08:27,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2020-09-25 03:08:27,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 03:08:27,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-09-25 03:08:27,761 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 38 [2020-09-25 03:08:27,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:27,761 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-09-25 03:08:27,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 03:08:27,762 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-09-25 03:08:27,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 03:08:27,763 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:27,763 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:27,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:08:27,764 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:27,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:27,764 INFO L82 PathProgramCache]: Analyzing trace with hash -211667235, now seen corresponding path program 1 times [2020-09-25 03:08:27,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:27,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040648400] [2020-09-25 03:08:27,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:27,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:28,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:28,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 03:08:28,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:28,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-09-25 03:08:28,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:28,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 03:08:28,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 03:08:28,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 03:08:28,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:28,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:28,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:28,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:28,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:28,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:28,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:08:28,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:28,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:28,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:28,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:28,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:28,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:08:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:28,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:28,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:28,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:08:28,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:28,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 03:08:28,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:28,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 03:08:28,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:28,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 03:08:28,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:28,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:28,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:28,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:28,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 03:08:28,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:28,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 03:08:28,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:28,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:08:28,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:28,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 03:08:28,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:28,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:28,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:28,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:28,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:28,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:28,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 03:08:28,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:28,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:08:28,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:28,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:08:28,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:28,503 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 03:08:28,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040648400] [2020-09-25 03:08:28,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:28,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 03:08:28,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12558040] [2020-09-25 03:08:28,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 03:08:28,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:28,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 03:08:28,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:08:28,506 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 13 states. [2020-09-25 03:08:28,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:28,999 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-09-25 03:08:29,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 03:08:29,000 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-09-25 03:08:29,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:29,002 INFO L225 Difference]: With dead ends: 69 [2020-09-25 03:08:29,003 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 03:08:29,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2020-09-25 03:08:29,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 03:08:29,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 50. [2020-09-25 03:08:29,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 03:08:29,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-09-25 03:08:29,011 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 39 [2020-09-25 03:08:29,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:29,012 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-09-25 03:08:29,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 03:08:29,012 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-09-25 03:08:29,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 03:08:29,014 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:29,014 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:29,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:08:29,014 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:29,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:29,015 INFO L82 PathProgramCache]: Analyzing trace with hash 320612812, now seen corresponding path program 1 times [2020-09-25 03:08:29,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:29,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672774850] [2020-09-25 03:08:29,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:29,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:29,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:29,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:29,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 03:08:29,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:29,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 472 [2020-09-25 03:08:29,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:29,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 03:08:29,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 03:08:29,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 03:08:29,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:29,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:29,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:29,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:29,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:29,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:29,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:08:29,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:29,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:29,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:29,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:29,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:29,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:08:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:29,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:29,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:29,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:29,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 03:08:29,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:29,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 03:08:29,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:29,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 03:08:29,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:29,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 03:08:29,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:29,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:29,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:29,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:29,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:29,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:08:29,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:29,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 03:08:29,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:29,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 03:08:29,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:29,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:08:29,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:30,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:30,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:30,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:30,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:30,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 03:08:30,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:30,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 03:08:30,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:30,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:08:30,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:30,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 03:08:30,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:30,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:30,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:30,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:30,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:08:30,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:30,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 03:08:30,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:30,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:08:30,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:30,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:30,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:30,271 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 03:08:30,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672774850] [2020-09-25 03:08:30,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:30,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 03:08:30,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125778201] [2020-09-25 03:08:30,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 03:08:30,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:30,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 03:08:30,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-09-25 03:08:30,277 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 15 states. [2020-09-25 03:08:30,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:30,817 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2020-09-25 03:08:30,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 03:08:30,817 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 47 [2020-09-25 03:08:30,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:30,819 INFO L225 Difference]: With dead ends: 74 [2020-09-25 03:08:30,819 INFO L226 Difference]: Without dead ends: 67 [2020-09-25 03:08:30,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2020-09-25 03:08:30,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-25 03:08:30,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2020-09-25 03:08:30,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 03:08:30,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-09-25 03:08:30,828 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 47 [2020-09-25 03:08:30,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:30,828 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-09-25 03:08:30,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 03:08:30,828 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-09-25 03:08:30,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 03:08:30,830 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:30,830 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:30,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:08:30,831 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:30,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:30,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1757163992, now seen corresponding path program 1 times [2020-09-25 03:08:30,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:30,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138373918] [2020-09-25 03:08:30,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:30,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:31,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:31,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 03:08:31,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:31,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-09-25 03:08:31,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:31,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 03:08:31,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 03:08:31,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 03:08:31,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:31,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:31,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:31,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:31,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:31,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:31,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:08:31,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:31,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:31,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:31,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:31,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:31,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:08:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:31,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:31,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:31,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 03:08:31,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:31,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 03:08:31,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:31,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 03:08:31,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:31,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 03:08:31,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:31,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:31,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:31,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:31,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:08:31,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:31,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 03:08:31,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:31,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 03:08:31,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:31,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 03:08:31,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:31,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:31,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:31,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:31,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 03:08:31,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:31,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 03:08:31,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:31,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:08:31,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:31,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 03:08:31,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:31,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:31,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:31,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:31,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:31,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:31,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:08:31,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:31,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:08:31,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:31,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:08:31,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:31,832 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 03:08:31,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138373918] [2020-09-25 03:08:31,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:31,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 03:08:31,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146150482] [2020-09-25 03:08:31,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 03:08:31,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:31,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 03:08:31,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-09-25 03:08:31,835 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 15 states. [2020-09-25 03:08:32,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:32,358 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2020-09-25 03:08:32,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 03:08:32,358 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2020-09-25 03:08:32,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:32,364 INFO L225 Difference]: With dead ends: 79 [2020-09-25 03:08:32,364 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 03:08:32,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2020-09-25 03:08:32,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 03:08:32,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 55. [2020-09-25 03:08:32,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 03:08:32,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-09-25 03:08:32,385 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 48 [2020-09-25 03:08:32,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:32,386 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-09-25 03:08:32,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 03:08:32,388 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-09-25 03:08:32,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 03:08:32,391 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:32,391 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:32,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:08:32,392 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:32,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:32,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1185852169, now seen corresponding path program 2 times [2020-09-25 03:08:32,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:32,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663302451] [2020-09-25 03:08:32,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:32,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:32,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:33,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:33,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 03:08:33,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:33,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 614 [2020-09-25 03:08:33,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:33,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 03:08:33,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 03:08:33,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 03:08:33,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:33,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:33,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:33,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:33,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:33,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:33,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:08:33,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:33,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:33,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:33,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:33,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:33,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:08:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:33,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:33,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:33,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:33,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:08:33,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:33,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 03:08:33,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:33,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 03:08:33,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:33,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 03:08:33,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:33,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:33,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:33,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:33,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:33,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 03:08:33,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:33,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 03:08:33,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:33,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 03:08:33,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:33,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 03:08:33,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:33,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:33,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:33,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:33,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:33,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:08:33,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:33,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 03:08:33,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:33,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 03:08:33,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:33,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:08:33,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:33,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:33,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:33,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:33,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:33,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 03:08:33,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:33,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 03:08:33,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:33,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:08:33,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:33,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 03:08:33,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:33,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:33,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:33,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:33,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:08:33,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:33,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:08:33,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:33,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:08:33,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:33,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:33,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:33,983 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 03:08:33,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663302451] [2020-09-25 03:08:33,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:33,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 03:08:33,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383605317] [2020-09-25 03:08:33,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 03:08:33,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:33,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 03:08:33,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-09-25 03:08:33,990 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 17 states. [2020-09-25 03:08:34,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:34,675 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2020-09-25 03:08:34,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 03:08:34,676 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-09-25 03:08:34,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:34,678 INFO L225 Difference]: With dead ends: 84 [2020-09-25 03:08:34,678 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 03:08:34,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 03:08:34,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 03:08:34,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 60. [2020-09-25 03:08:34,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 03:08:34,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-09-25 03:08:34,687 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 56 [2020-09-25 03:08:34,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:34,688 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-09-25 03:08:34,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 03:08:34,688 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-09-25 03:08:34,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 03:08:34,690 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:34,690 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:34,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 03:08:34,690 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:34,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:34,691 INFO L82 PathProgramCache]: Analyzing trace with hash 338577365, now seen corresponding path program 2 times [2020-09-25 03:08:34,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:34,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160414362] [2020-09-25 03:08:34,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:34,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:35,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:35,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 03:08:35,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:35,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 605 [2020-09-25 03:08:35,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 03:08:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 03:08:35,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 03:08:35,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:35,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:35,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:35,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:35,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:35,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:35,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:08:35,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:35,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:35,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:35,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:35,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:35,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:08:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:35,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:35,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:35,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 03:08:35,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:35,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 03:08:35,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:35,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 03:08:35,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:35,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 03:08:35,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:35,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:35,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:35,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:35,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:35,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 03:08:35,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:35,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 03:08:35,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:35,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 03:08:35,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:35,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 03:08:35,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:35,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:35,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:35,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:35,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:08:35,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:35,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 03:08:35,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:35,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 03:08:35,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:35,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 03:08:35,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:35,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:35,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:35,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:35,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 03:08:35,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:35,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 03:08:35,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:35,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:08:35,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:35,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 03:08:35,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:35,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:35,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:35,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:35,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:35,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:35,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 03:08:35,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:35,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:08:35,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:36,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:08:36,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:36,078 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 03:08:36,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160414362] [2020-09-25 03:08:36,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:36,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 03:08:36,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451646162] [2020-09-25 03:08:36,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 03:08:36,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:36,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 03:08:36,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-09-25 03:08:36,081 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 17 states. [2020-09-25 03:08:36,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:36,797 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2020-09-25 03:08:36,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 03:08:36,797 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 57 [2020-09-25 03:08:36,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:36,800 INFO L225 Difference]: With dead ends: 89 [2020-09-25 03:08:36,800 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 03:08:36,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 03:08:36,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 03:08:36,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 60. [2020-09-25 03:08:36,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 03:08:36,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-09-25 03:08:36,808 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 57 [2020-09-25 03:08:36,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:36,808 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-09-25 03:08:36,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 03:08:36,808 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-09-25 03:08:36,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 03:08:36,809 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:36,809 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:36,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 03:08:36,810 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:36,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:36,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1560027652, now seen corresponding path program 2 times [2020-09-25 03:08:36,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:36,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372877896] [2020-09-25 03:08:36,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:36,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:36,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:37,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:37,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 03:08:37,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:37,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 724 [2020-09-25 03:08:37,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:37,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 03:08:37,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 03:08:37,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 03:08:37,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:37,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:37,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:37,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:37,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:37,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:37,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:08:37,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:37,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:37,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:37,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:37,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:37,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:08:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:37,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:37,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:37,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:37,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 03:08:37,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:37,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 03:08:37,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:37,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 03:08:37,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:37,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 03:08:37,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:37,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:37,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:38,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:38,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:38,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:08:38,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:38,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 03:08:38,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:38,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 03:08:38,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:38,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 03:08:38,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:38,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:38,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:38,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:38,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:38,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 03:08:38,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:38,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 03:08:38,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:38,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 03:08:38,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:38,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 03:08:38,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:38,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:38,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:38,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:38,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:38,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:08:38,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:38,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 03:08:38,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:38,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 03:08:38,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:38,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:08:38,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:38,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:38,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:38,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:38,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:38,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 03:08:38,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:38,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 03:08:38,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:38,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:08:38,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:38,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 03:08:38,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:38,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:38,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:38,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:38,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:08:38,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:38,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:08:38,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:38,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:08:38,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:38,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:38,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:38,782 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 03:08:38,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372877896] [2020-09-25 03:08:38,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:38,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 03:08:38,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836625047] [2020-09-25 03:08:38,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 03:08:38,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:38,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 03:08:38,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:08:38,786 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 19 states. [2020-09-25 03:08:39,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:39,754 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2020-09-25 03:08:39,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 03:08:39,755 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-25 03:08:39,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:39,757 INFO L225 Difference]: With dead ends: 94 [2020-09-25 03:08:39,757 INFO L226 Difference]: Without dead ends: 87 [2020-09-25 03:08:39,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=129, Invalid=1277, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 03:08:39,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-25 03:08:39,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 65. [2020-09-25 03:08:39,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 03:08:39,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-09-25 03:08:39,766 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 65 [2020-09-25 03:08:39,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:39,766 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-09-25 03:08:39,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 03:08:39,767 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-09-25 03:08:39,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 03:08:39,767 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:39,768 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:39,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 03:08:39,768 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:39,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:39,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1346648732, now seen corresponding path program 2 times [2020-09-25 03:08:39,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:39,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176652881] [2020-09-25 03:08:39,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:39,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:40,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:40,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 03:08:40,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:40,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 667 [2020-09-25 03:08:40,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:40,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 03:08:40,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 03:08:40,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 03:08:40,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:40,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:40,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:40,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:40,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:40,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:40,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:40,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:08:40,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:40,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:40,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:40,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:40,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:40,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:08:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:40,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:40,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:40,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 03:08:40,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:40,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 03:08:40,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:40,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 03:08:40,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:40,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 03:08:40,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:40,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:40,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:41,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:41,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 03:08:41,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:41,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 03:08:41,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:41,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 03:08:41,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:41,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 03:08:41,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:41,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:41,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:41,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:41,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 03:08:41,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:41,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 03:08:41,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:41,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 03:08:41,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:41,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 03:08:41,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:41,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:41,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:41,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:41,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:08:41,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:41,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 03:08:41,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 03:08:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 03:08:41,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:41,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:41,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:41,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:41,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 03:08:41,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:41,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 03:08:41,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:41,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:08:41,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:41,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 03:08:41,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:41,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:41,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:41,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:41,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:41,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:41,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:08:41,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:41,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:08:41,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:41,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:08:41,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:41,593 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 03:08:41,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176652881] [2020-09-25 03:08:41,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:41,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 03:08:41,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001274462] [2020-09-25 03:08:41,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 03:08:41,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:41,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 03:08:41,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:08:41,596 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 19 states. [2020-09-25 03:08:42,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:42,607 INFO L93 Difference]: Finished difference Result 99 states and 103 transitions. [2020-09-25 03:08:42,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 03:08:42,607 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 66 [2020-09-25 03:08:42,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:42,609 INFO L225 Difference]: With dead ends: 99 [2020-09-25 03:08:42,609 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 03:08:42,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=129, Invalid=1277, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 03:08:42,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 03:08:42,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 65. [2020-09-25 03:08:42,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 03:08:42,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-09-25 03:08:42,617 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 66 [2020-09-25 03:08:42,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:42,618 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-09-25 03:08:42,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 03:08:42,618 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-09-25 03:08:42,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 03:08:42,619 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:42,619 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:42,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 03:08:42,619 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:42,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:42,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1992760179, now seen corresponding path program 3 times [2020-09-25 03:08:42,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:42,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856147208] [2020-09-25 03:08:42,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:42,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:42,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:43,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:43,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 03:08:43,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:43,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 845 [2020-09-25 03:08:43,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:43,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-25 03:08:43,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 03:08:43,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 03:08:43,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:43,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:43,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:43,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:43,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:43,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:43,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:08:43,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:43,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:43,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:43,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:43,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:43,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:08:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:43,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:43,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:43,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:43,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 03:08:43,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:43,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-09-25 03:08:43,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:43,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-25 03:08:43,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:43,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 03:08:43,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:43,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:44,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:44,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:44,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:44,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 03:08:44,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:44,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 03:08:44,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:44,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 03:08:44,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:44,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 03:08:44,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:44,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:44,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:44,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:44,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:44,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:08:44,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:44,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 03:08:44,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:44,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 03:08:44,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:44,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 03:08:44,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:44,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:44,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:44,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:44,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:44,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 03:08:44,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:44,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 03:08:44,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:44,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 03:08:44,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:44,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 03:08:44,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:44,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:44,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:44,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:44,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:44,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:08:44,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:44,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 03:08:44,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:44,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 03:08:44,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:44,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:08:44,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:44,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:44,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:44,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:44,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:44,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 03:08:44,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:44,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 03:08:44,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:44,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:08:44,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:44,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 03:08:44,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:44,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:44,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:44,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:44,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:08:44,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:44,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:08:44,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:44,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:08:44,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:44,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:44,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:45,105 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 03:08:45,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856147208] [2020-09-25 03:08:45,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:45,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 03:08:45,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233138660] [2020-09-25 03:08:45,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 03:08:45,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:45,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 03:08:45,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-09-25 03:08:45,113 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 21 states. [2020-09-25 03:08:46,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:46,295 INFO L93 Difference]: Finished difference Result 104 states and 108 transitions. [2020-09-25 03:08:46,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-25 03:08:46,295 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 74 [2020-09-25 03:08:46,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:46,296 INFO L225 Difference]: With dead ends: 104 [2020-09-25 03:08:46,296 INFO L226 Difference]: Without dead ends: 97 [2020-09-25 03:08:46,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=148, Invalid=1658, Unknown=0, NotChecked=0, Total=1806 [2020-09-25 03:08:46,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-25 03:08:46,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 70. [2020-09-25 03:08:46,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 03:08:46,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-09-25 03:08:46,304 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 74 [2020-09-25 03:08:46,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:46,304 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-09-25 03:08:46,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 03:08:46,304 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-09-25 03:08:46,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 03:08:46,305 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:46,305 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:46,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 03:08:46,306 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:46,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:46,306 INFO L82 PathProgramCache]: Analyzing trace with hash -2107047859, now seen corresponding path program 3 times [2020-09-25 03:08:46,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:46,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328335591] [2020-09-25 03:08:46,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:46,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:47,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:47,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 03:08:47,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:47,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 973 [2020-09-25 03:08:47,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:47,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-25 03:08:47,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 03:08:47,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 03:08:47,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:47,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:47,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:47,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:47,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:47,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:47,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:08:47,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:47,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:47,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:47,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:47,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:47,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:08:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:47,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:47,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:47,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 03:08:47,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:47,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-09-25 03:08:47,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:47,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-25 03:08:47,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:47,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 03:08:47,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:47,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:47,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:47,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:47,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 03:08:47,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:47,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 03:08:47,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:47,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 03:08:47,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:47,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 03:08:47,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:48,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:48,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:48,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:48,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 03:08:48,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:48,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 03:08:48,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:48,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 03:08:48,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:48,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 03:08:48,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:48,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:48,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:48,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:48,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 03:08:48,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:48,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 03:08:48,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:48,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 03:08:48,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:48,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 03:08:48,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:48,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:48,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:48,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:48,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:08:48,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:48,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 03:08:48,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:48,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 03:08:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 03:08:48,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:48,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:48,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:48,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:48,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 03:08:48,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:48,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 03:08:48,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:08:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:48,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 03:08:48,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:48,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:48,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:48,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:48,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:48,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:48,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:08:48,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:08:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:08:48,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:48,763 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 03:08:48,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328335591] [2020-09-25 03:08:48,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:48,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 03:08:48,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986172101] [2020-09-25 03:08:48,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 03:08:48,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:48,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 03:08:48,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-09-25 03:08:48,770 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 22 states. [2020-09-25 03:08:49,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:49,986 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2020-09-25 03:08:49,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-25 03:08:49,989 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 75 [2020-09-25 03:08:49,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:49,990 INFO L225 Difference]: With dead ends: 109 [2020-09-25 03:08:49,991 INFO L226 Difference]: Without dead ends: 102 [2020-09-25 03:08:49,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=162, Invalid=1730, Unknown=0, NotChecked=0, Total=1892 [2020-09-25 03:08:49,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-25 03:08:49,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 70. [2020-09-25 03:08:49,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 03:08:49,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-09-25 03:08:49,999 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 75 [2020-09-25 03:08:49,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:49,999 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-09-25 03:08:49,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 03:08:49,999 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-09-25 03:08:50,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 03:08:50,000 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:50,000 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:50,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 03:08:50,001 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:50,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:50,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1771228740, now seen corresponding path program 3 times [2020-09-25 03:08:50,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:50,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720499120] [2020-09-25 03:08:50,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:50,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:50,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:51,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:51,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 03:08:51,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:51,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-09-25 03:08:51,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:51,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-09-25 03:08:51,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 03:08:51,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 03:08:51,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:51,208 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 17 [2020-09-25 03:08:51,343 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 17 [2020-09-25 03:08:51,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:51,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:51,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:51,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:51,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:51,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:08:51,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:51,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:51,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:51,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:51,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:51,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:08:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:51,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:51,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:51,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:51,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 03:08:51,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:51,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-25 03:08:51,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:51,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-25 03:08:51,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:51,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 03:08:51,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:51,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:51,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:51,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:51,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:51,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 03:08:51,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:51,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-09-25 03:08:51,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:51,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-25 03:08:51,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:51,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 03:08:51,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:52,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:52,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:52,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 03:08:52,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:52,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-25 03:08:52,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:52,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 03:08:52,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:52,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 03:08:52,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:52,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:52,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:52,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:08:52,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:52,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 03:08:52,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:52,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 03:08:52,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:52,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 03:08:52,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:52,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:52,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:52,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 03:08:52,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:52,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 03:08:52,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:52,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 03:08:52,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:52,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 03:08:52,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:52,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:52,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:52,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:08:52,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:52,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 03:08:52,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:52,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 03:08:52,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:52,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:08:52,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:52,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:52,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:52,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 03:08:52,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:52,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 03:08:52,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:52,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:08:52,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:52,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 03:08:52,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:52,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:52,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:52,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:08:52,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:52,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:08:52,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:52,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:08:52,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:52,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:52,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:53,091 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-09-25 03:08:53,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720499120] [2020-09-25 03:08:53,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:53,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 03:08:53,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98131099] [2020-09-25 03:08:53,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 03:08:53,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:53,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 03:08:53,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-09-25 03:08:53,094 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 23 states. [2020-09-25 03:08:54,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:54,585 INFO L93 Difference]: Finished difference Result 114 states and 118 transitions. [2020-09-25 03:08:54,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-25 03:08:54,585 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 83 [2020-09-25 03:08:54,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:54,587 INFO L225 Difference]: With dead ends: 114 [2020-09-25 03:08:54,587 INFO L226 Difference]: Without dead ends: 107 [2020-09-25 03:08:54,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 13 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=167, Invalid=2089, Unknown=0, NotChecked=0, Total=2256 [2020-09-25 03:08:54,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-25 03:08:54,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 75. [2020-09-25 03:08:54,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 03:08:54,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-09-25 03:08:54,595 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 83 [2020-09-25 03:08:54,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:54,595 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-09-25 03:08:54,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 03:08:54,595 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-09-25 03:08:54,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-25 03:08:54,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:54,596 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:54,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 03:08:54,597 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:54,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:54,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1688547104, now seen corresponding path program 3 times [2020-09-25 03:08:54,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:54,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627182071] [2020-09-25 03:08:54,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:54,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:55,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:55,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 03:08:55,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:55,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-25 03:08:55,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:55,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-09-25 03:08:55,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 03:08:55,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-25 03:08:55,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:55,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:55,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:55,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:55,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:55,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:55,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:08:55,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:55,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:55,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:55,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:55,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:55,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:08:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:55,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:56,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:56,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 03:08:56,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:56,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-09-25 03:08:56,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:56,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-25 03:08:56,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:56,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 03:08:56,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:56,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:56,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:56,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:56,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 03:08:56,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:56,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 03:08:56,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:56,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-25 03:08:56,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:56,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 03:08:56,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:56,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:56,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:56,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:56,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 03:08:56,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:56,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 03:08:56,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:56,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 03:08:56,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:56,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 03:08:56,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:56,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:56,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:56,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:56,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 03:08:56,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:56,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 03:08:56,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:56,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 03:08:56,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:56,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 03:08:56,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:56,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:56,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:56,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:56,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 03:08:56,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:56,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 03:08:56,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:56,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 03:08:56,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:56,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 03:08:56,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:56,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:56,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:56,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:56,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:08:56,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:56,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 03:08:56,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:56,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 03:08:56,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:56,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 03:08:56,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:56,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:56,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:56,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:56,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:56,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 03:08:56,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:56,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 03:08:56,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:56,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:08:56,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:56,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 03:08:56,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:57,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:57,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:57,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:57,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:57,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:57,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 03:08:57,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:57,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:08:57,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:57,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:08:57,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:57,234 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-25 03:08:57,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627182071] [2020-09-25 03:08:57,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:57,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-25 03:08:57,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379233752] [2020-09-25 03:08:57,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-25 03:08:57,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:57,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-25 03:08:57,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=503, Unknown=0, NotChecked=0, Total=552 [2020-09-25 03:08:57,237 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 24 states. [2020-09-25 03:08:58,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:58,746 INFO L93 Difference]: Finished difference Result 119 states and 123 transitions. [2020-09-25 03:08:58,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-25 03:08:58,746 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 84 [2020-09-25 03:08:58,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:58,748 INFO L225 Difference]: With dead ends: 119 [2020-09-25 03:08:58,748 INFO L226 Difference]: Without dead ends: 112 [2020-09-25 03:08:58,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=184, Invalid=2168, Unknown=0, NotChecked=0, Total=2352 [2020-09-25 03:08:58,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-25 03:08:58,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 75. [2020-09-25 03:08:58,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 03:08:58,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-09-25 03:08:58,754 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 84 [2020-09-25 03:08:58,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:58,755 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-09-25 03:08:58,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-25 03:08:58,755 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-09-25 03:08:58,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-25 03:08:58,756 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:58,756 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:58,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 03:08:58,757 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:58,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:58,757 INFO L82 PathProgramCache]: Analyzing trace with hash -901694575, now seen corresponding path program 4 times [2020-09-25 03:08:58,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:58,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039764010] [2020-09-25 03:08:58,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:58,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:58,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:59,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 03:08:59,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:59,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1157 [2020-09-25 03:08:59,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:59,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-09-25 03:08:59,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 03:08:59,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 03:08:59,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:00,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:00,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:00,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:00,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:00,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:00,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:09:00,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:00,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:00,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:00,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:00,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:00,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:09:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:00,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:00,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:00,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:00,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-09-25 03:09:00,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:00,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-09-25 03:09:00,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:00,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-25 03:09:00,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:00,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 03:09:00,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:00,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:00,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:00,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:00,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:00,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 03:09:00,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:00,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-25 03:09:00,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:00,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-25 03:09:00,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:00,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 03:09:00,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:00,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:00,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:00,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:00,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:00,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 03:09:00,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:00,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-25 03:09:00,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:00,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-25 03:09:00,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:00,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 03:09:00,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:01,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:01,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:01,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:01,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:01,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 03:09:01,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:01,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-25 03:09:01,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:01,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 03:09:01,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:01,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 03:09:01,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:01,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:01,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:01,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:01,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:01,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:09:01,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:01,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 03:09:01,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:01,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 03:09:01,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:01,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 03:09:01,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:01,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:01,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:01,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:01,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:01,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 03:09:01,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:01,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 03:09:01,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:01,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 03:09:01,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:01,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 03:09:01,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:01,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:01,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:01,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:01,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:01,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:09:01,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:01,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 03:09:01,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:01,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 03:09:01,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:01,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:09:01,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:01,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:01,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:01,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:01,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:01,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 03:09:01,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:01,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 03:09:01,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:01,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:09:01,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 03:09:01,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:02,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:02,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:02,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:02,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:02,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:02,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:02,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:09:02,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:02,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:09:02,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:02,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:02,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:02,221 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-09-25 03:09:02,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039764010] [2020-09-25 03:09:02,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:02,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-09-25 03:09:02,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594503142] [2020-09-25 03:09:02,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-25 03:09:02,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:02,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-25 03:09:02,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2020-09-25 03:09:02,223 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 26 states. [2020-09-25 03:09:03,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:03,748 INFO L93 Difference]: Finished difference Result 124 states and 128 transitions. [2020-09-25 03:09:03,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-25 03:09:03,749 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 92 [2020-09-25 03:09:03,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:03,750 INFO L225 Difference]: With dead ends: 124 [2020-09-25 03:09:03,751 INFO L226 Difference]: Without dead ends: 117 [2020-09-25 03:09:03,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=203, Invalid=2659, Unknown=0, NotChecked=0, Total=2862 [2020-09-25 03:09:03,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-25 03:09:03,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 80. [2020-09-25 03:09:03,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-25 03:09:03,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-09-25 03:09:03,758 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 92 [2020-09-25 03:09:03,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:03,759 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-09-25 03:09:03,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-25 03:09:03,759 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-09-25 03:09:03,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-25 03:09:03,760 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:03,760 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:03,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 03:09:03,761 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:03,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:03,761 INFO L82 PathProgramCache]: Analyzing trace with hash -751656891, now seen corresponding path program 4 times [2020-09-25 03:09:03,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:03,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458729157] [2020-09-25 03:09:03,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:03,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:04,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:04,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 03:09:04,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:04,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1170 [2020-09-25 03:09:04,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:04,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-09-25 03:09:04,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 03:09:04,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 03:09:04,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:05,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:05,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:05,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:05,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:05,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:05,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:05,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:05,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:05,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:05,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:05,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:05,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:09:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:05,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:05,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:05,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 03:09:05,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:05,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-09-25 03:09:05,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:05,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-25 03:09:05,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:05,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 03:09:05,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:05,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:05,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:05,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:05,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 03:09:05,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:05,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-25 03:09:05,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:05,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-25 03:09:05,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:05,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 03:09:05,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:05,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:05,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:05,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:05,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 03:09:05,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:05,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-25 03:09:05,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:05,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-25 03:09:05,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:05,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 03:09:05,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:05,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:06,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:06,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:06,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 03:09:06,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:06,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 03:09:06,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:06,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 03:09:06,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:06,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 03:09:06,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:06,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:06,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:06,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:06,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 03:09:06,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:06,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 03:09:06,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 03:09:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 03:09:06,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:06,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:06,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:06,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:06,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 03:09:06,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:06,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 03:09:06,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:06,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 03:09:06,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:06,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 03:09:06,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:06,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:06,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:06,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:06,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:09:06,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:06,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 03:09:06,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:06,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 03:09:06,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:06,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 03:09:06,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:06,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:06,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:06,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:06,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 03:09:06,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:06,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 03:09:06,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:06,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:09:06,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:06,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 03:09:06,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:06,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:06,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:06,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:06,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:06,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:06,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:09:06,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:06,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:09:06,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:06,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:09:06,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:06,903 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 03:09:06,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458729157] [2020-09-25 03:09:06,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:06,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 03:09:06,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657999670] [2020-09-25 03:09:06,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 03:09:06,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:06,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 03:09:06,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=552, Unknown=0, NotChecked=0, Total=600 [2020-09-25 03:09:06,905 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand 25 states. [2020-09-25 03:09:08,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:08,627 INFO L93 Difference]: Finished difference Result 129 states and 133 transitions. [2020-09-25 03:09:08,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-25 03:09:08,628 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 93 [2020-09-25 03:09:08,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:08,630 INFO L225 Difference]: With dead ends: 129 [2020-09-25 03:09:08,630 INFO L226 Difference]: Without dead ends: 122 [2020-09-25 03:09:08,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 15 SyntacticMatches, 5 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=186, Invalid=2570, Unknown=0, NotChecked=0, Total=2756 [2020-09-25 03:09:08,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-25 03:09:08,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 80. [2020-09-25 03:09:08,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-25 03:09:08,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-09-25 03:09:08,636 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 93 [2020-09-25 03:09:08,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:08,636 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-09-25 03:09:08,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 03:09:08,637 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-09-25 03:09:08,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 03:09:08,637 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:08,638 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:08,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 03:09:08,638 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:08,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:08,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1968989964, now seen corresponding path program 4 times [2020-09-25 03:09:08,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:08,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886439994] [2020-09-25 03:09:08,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:08,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:08,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:09,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:09,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 03:09:09,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:09,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1315 [2020-09-25 03:09:09,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:09,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-09-25 03:09:09,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 03:09:09,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 03:09:09,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:10,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:10,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:10,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:10,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:10,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:10,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:10,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:10,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:10,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 03:09:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:10,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:10,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking...