/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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id2_b5_o10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:58:45,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:58:45,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:58:45,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:58:45,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:58:45,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:58:45,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:58:45,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:58:45,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:58:45,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:58:45,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:58:45,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:58:45,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:58:45,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:58:45,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:58:45,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:58:45,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:58:45,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:58:45,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:58:45,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:58:45,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:58:45,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:58:45,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:58:45,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:58:45,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 15:58:45,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 15:58:45,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 15:58:46,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 15:58:46,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 15:58:46,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 15:58:46,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:58:46,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:58:46,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:58:46,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:58:46,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:58:46,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:58:46,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:58:46,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:58:46,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:58:46,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:58:46,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:58:46,017 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 [2020-09-24 15:58:46,070 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:58:46,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:58:46,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:58:46,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:58:46,073 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:58:46,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:58:46,074 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:58:46,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:58:46,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:58:46,074 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:58:46,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:58:46,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:58:46,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:58:46,076 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:58:46,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:58:46,077 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:58:46,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:58:46,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:58:46,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:58:46,078 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:58:46,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:58:46,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:58:46,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:58:46,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:58:46,079 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:58:46,079 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:58:46,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:58:46,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:58:46,080 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:58:46,080 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;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 15:58:46,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:58:46,601 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:58:46,606 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:58:46,607 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:58:46,608 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:58:46,609 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_b5_o10.c [2020-09-24 15:58:46,686 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23d19483f/c77990dec98a44728fdb7a1f27c73cc7/FLAGd4094522e [2020-09-24 15:58:47,225 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:58:47,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id2_b5_o10.c [2020-09-24 15:58:47,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23d19483f/c77990dec98a44728fdb7a1f27c73cc7/FLAGd4094522e [2020-09-24 15:58:47,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23d19483f/c77990dec98a44728fdb7a1f27c73cc7 [2020-09-24 15:58:47,562 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:58:47,568 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:58:47,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:58:47,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:58:47,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:58:47,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:58:47" (1/1) ... [2020-09-24 15:58:47,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a7e2148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:47, skipping insertion in model container [2020-09-24 15:58:47,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:58:47" (1/1) ... [2020-09-24 15:58:47,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:58:47,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:58:47,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:58:47,824 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:58:47,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:58:47,863 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:58:47,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:47 WrapperNode [2020-09-24 15:58:47,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:58:47,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:58:47,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:58:47,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:58:47,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:47" (1/1) ... [2020-09-24 15:58:47,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:47" (1/1) ... [2020-09-24 15:58:47,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:47" (1/1) ... [2020-09-24 15:58:47,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:47" (1/1) ... [2020-09-24 15:58:47,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:47" (1/1) ... [2020-09-24 15:58:47,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:47" (1/1) ... [2020-09-24 15:58:47,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:47" (1/1) ... [2020-09-24 15:58:47,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:58:47,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:58:47,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:58:47,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:58:47,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:47" (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 [2020-09-24 15:58:48,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:58:48,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:58:48,067 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-24 15:58:48,067 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-09-24 15:58:48,067 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:58:48,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 15:58:48,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:58:48,068 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-24 15:58:48,069 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-09-24 15:58:48,069 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:58:48,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:58:48,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:58:48,308 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:58:48,309 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 15:58:48,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:58:48 BoogieIcfgContainer [2020-09-24 15:58:48,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:58:48,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:58:48,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:58:48,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:58:48,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:58:47" (1/3) ... [2020-09-24 15:58:48,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7298121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:58:48, skipping insertion in model container [2020-09-24 15:58:48,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:47" (2/3) ... [2020-09-24 15:58:48,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7298121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:58:48, skipping insertion in model container [2020-09-24 15:58:48,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:58:48" (3/3) ... [2020-09-24 15:58:48,356 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_b5_o10.c [2020-09-24 15:58:48,384 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:58:48,405 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:58:48,432 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:58:48,467 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:58:48,467 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:58:48,468 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:58:48,468 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:58:48,468 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:58:48,468 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:58:48,468 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:58:48,469 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:58:48,494 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-09-24 15:58:48,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 15:58:48,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:48,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:48,504 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:48,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:48,510 INFO L82 PathProgramCache]: Analyzing trace with hash 875745540, now seen corresponding path program 1 times [2020-09-24 15:58:48,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:48,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52114247] [2020-09-24 15:58:48,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:48,684 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:48,685 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:48,685 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:48,685 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:48,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 15:58:48,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:48,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 15:58:48,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:48,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:48,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 15:58:48,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:48,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:48,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:48,766 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:48,767 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:48,767 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:48,767 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:48,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:48,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:48,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:48,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:48,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:48,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:48,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:48,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:48,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:58:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:48,785 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:48,785 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:48,785 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:48,786 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:48,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:48,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:48,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 15:58:48,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:48,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:48,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:48,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:48,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:48,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:58:48,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52114247] [2020-09-24 15:58:48,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:58:48,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:58:48,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066160902] [2020-09-24 15:58:48,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:58:48,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:48,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:58:48,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:58:48,852 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2020-09-24 15:58:48,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:48,941 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-09-24 15:58:48,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 15:58:48,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 15:58:48,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:48,957 INFO L225 Difference]: With dead ends: 51 [2020-09-24 15:58:48,957 INFO L226 Difference]: Without dead ends: 36 [2020-09-24 15:58:48,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:58:48,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-24 15:58:49,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-24 15:58:49,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 15:58:49,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-09-24 15:58:49,016 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 16 [2020-09-24 15:58:49,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:49,017 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-09-24 15:58:49,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:58:49,017 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-09-24 15:58:49,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 15:58:49,020 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:49,020 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] [2020-09-24 15:58:49,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:58:49,021 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:49,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:49,022 INFO L82 PathProgramCache]: Analyzing trace with hash 71846672, now seen corresponding path program 1 times [2020-09-24 15:58:49,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:49,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811000671] [2020-09-24 15:58:49,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:49,110 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:49,111 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:49,111 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:49,111 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:49,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 15:58:49,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:49,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 15:58:49,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:49,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:58:49,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 15:58:49,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 15:58:49,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:49,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:49,247 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:49,247 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:49,248 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:49,248 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:49,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:49,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:49,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:49,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:49,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:49,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:49,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:49,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:49,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:58:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:49,315 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:49,315 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:49,316 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:49,316 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:49,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 15:58:49,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:49,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 15:58:49,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:49,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:49,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:49,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 15:58:49,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:49,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:49,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:49,452 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:49,453 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:49,453 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:49,453 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:49,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:49,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:49,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 15:58:49,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:49,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:49,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:49,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:49,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:49,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:58:49,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811000671] [2020-09-24 15:58:49,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:58:49,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 15:58:49,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678057516] [2020-09-24 15:58:49,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 15:58:49,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:49,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 15:58:49,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:58:49,509 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 8 states. [2020-09-24 15:58:49,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:49,632 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2020-09-24 15:58:49,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 15:58:49,633 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-09-24 15:58:49,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:49,635 INFO L225 Difference]: With dead ends: 66 [2020-09-24 15:58:49,635 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 15:58:49,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-24 15:58:49,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 15:58:49,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-24 15:58:49,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 15:58:49,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-09-24 15:58:49,647 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 25 [2020-09-24 15:58:49,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:49,647 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-09-24 15:58:49,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 15:58:49,648 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-09-24 15:58:49,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 15:58:49,650 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:49,650 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] [2020-09-24 15:58:49,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:58:49,651 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:49,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:49,651 INFO L82 PathProgramCache]: Analyzing trace with hash -511991682, now seen corresponding path program 1 times [2020-09-24 15:58:49,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:49,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174543471] [2020-09-24 15:58:49,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:49,683 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:49,683 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:49,683 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:49,684 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:49,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 15:58:49,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:49,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 15:58:49,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:49,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:49,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-24 15:58:49,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:49,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:49,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:49,740 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:49,741 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:49,741 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:49,741 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:49,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:49,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:49,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:49,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:49,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:49,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:49,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:49,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:49,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:58:49,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:49,794 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:49,794 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:49,795 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:49,795 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:49,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:58:49,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:49,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 15:58:49,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:49,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:49,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 15:58:49,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:49,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:49,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:49,877 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:49,877 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:49,878 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:49,878 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:49,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 15:58:49,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:49,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 15:58:49,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:49,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:49,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:49,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 15:58:49,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:49,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:49,898 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:49,898 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:49,898 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:49,899 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:49,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:49,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:49,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:49,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:49,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:49,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:49,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:49,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:49,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 15:58:49,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174543471] [2020-09-24 15:58:49,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:58:49,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:58:49,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137705705] [2020-09-24 15:58:49,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:58:49,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:49,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:58:49,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:58:49,911 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 5 states. [2020-09-24 15:58:49,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:49,954 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2020-09-24 15:58:49,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 15:58:49,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-24 15:58:49,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:49,957 INFO L225 Difference]: With dead ends: 69 [2020-09-24 15:58:49,957 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 15:58:49,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:58:49,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 15:58:49,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2020-09-24 15:58:49,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 15:58:49,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-09-24 15:58:49,968 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 34 [2020-09-24 15:58:49,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:49,969 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-09-24 15:58:49,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:58:49,969 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-09-24 15:58:49,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 15:58:49,971 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:49,971 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] [2020-09-24 15:58:49,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:58:49,971 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:49,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:49,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1477652418, now seen corresponding path program 1 times [2020-09-24 15:58:49,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:49,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543455382] [2020-09-24 15:58:49,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:49,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:49,994 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:49,994 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:49,994 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:49,995 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:49,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 15:58:49,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:49,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 15:58:49,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:49,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:49,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 15:58:49,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:49,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:50,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:50,021 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:50,021 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:50,022 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:50,022 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:50,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:50,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:50,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:50,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:50,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:50,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:50,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:50,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:50,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:58:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:50,038 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:50,038 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:50,039 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:50,039 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:50,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:58:50,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:50,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:58:50,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:50,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:50,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:50,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:58:50,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:50,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:50,062 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:50,063 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:50,063 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:50,063 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:50,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 15:58:50,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:50,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:50,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:50,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:50,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:50,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:50,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:50,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:50,072 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:50,072 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:50,072 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:50,073 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:50,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:50,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:50,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:50,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:50,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:50,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:50,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:50,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:50,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 15:58:50,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543455382] [2020-09-24 15:58:50,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:58:50,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:58:50,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624194560] [2020-09-24 15:58:50,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:58:50,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:50,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:58:50,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:58:50,083 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 5 states. [2020-09-24 15:58:50,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:50,111 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2020-09-24 15:58:50,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 15:58:50,111 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-24 15:58:50,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:50,113 INFO L225 Difference]: With dead ends: 54 [2020-09-24 15:58:50,113 INFO L226 Difference]: Without dead ends: 49 [2020-09-24 15:58:50,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:58:50,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-24 15:58:50,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-09-24 15:58:50,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 15:58:50,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-09-24 15:58:50,121 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 34 [2020-09-24 15:58:50,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:50,122 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-09-24 15:58:50,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:58:50,122 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-09-24 15:58:50,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 15:58:50,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:50,124 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] [2020-09-24 15:58:50,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:58:50,124 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:50,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:50,125 INFO L82 PathProgramCache]: Analyzing trace with hash -2109914946, now seen corresponding path program 1 times [2020-09-24 15:58:50,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:50,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148936879] [2020-09-24 15:58:50,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:50,165 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:50,166 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:50,166 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:50,166 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:50,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 15:58:50,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:50,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 15:58:50,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:50,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 15:58:50,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 15:58:50,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:58:50,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:50,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:50,221 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:50,221 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:50,221 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:50,222 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:50,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:50,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:50,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:50,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:50,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:50,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:50,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:50,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:50,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:58:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:50,249 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:50,249 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:50,249 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:50,250 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:50,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:58:50,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:50,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 15:58:50,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:58:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:58:50,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:50,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:50,319 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:50,319 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:50,319 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:50,319 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:50,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 15:58:50,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:50,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 15:58:50,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:50,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:50,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:50,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 15:58:50,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:50,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:50,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:50,383 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:50,383 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:50,383 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:50,384 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:50,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:50,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:50,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:58:50,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:50,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:50,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:50,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:50,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 15:58:50,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148936879] [2020-09-24 15:58:50,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:50,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 15:58:50,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760718180] [2020-09-24 15:58:50,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 15:58:50,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:50,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 15:58:50,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-24 15:58:50,420 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 11 states. [2020-09-24 15:58:50,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:50,618 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2020-09-24 15:58:50,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 15:58:50,618 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-09-24 15:58:50,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:50,620 INFO L225 Difference]: With dead ends: 90 [2020-09-24 15:58:50,620 INFO L226 Difference]: Without dead ends: 61 [2020-09-24 15:58:50,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-09-24 15:58:50,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-24 15:58:50,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2020-09-24 15:58:50,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 15:58:50,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-09-24 15:58:50,630 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 34 [2020-09-24 15:58:50,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:50,631 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-09-24 15:58:50,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 15:58:50,631 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-09-24 15:58:50,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 15:58:50,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:50,633 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] [2020-09-24 15:58:50,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 15:58:50,634 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:50,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:50,634 INFO L82 PathProgramCache]: Analyzing trace with hash 830258234, now seen corresponding path program 1 times [2020-09-24 15:58:50,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:50,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239677272] [2020-09-24 15:58:50,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:50,693 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:50,694 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:50,694 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:50,694 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:50,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 15:58:50,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:50,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 15:58:50,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:50,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 15:58:50,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 15:58:50,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 15:58:50,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:50,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:50,752 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:50,752 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:50,753 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:50,753 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:50,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:50,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:50,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:50,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:50,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:50,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:50,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:50,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:50,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:58:50,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:50,792 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:50,792 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:50,792 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:50,793 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:50,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 15:58:50,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:50,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 15:58:50,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:50,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 15:58:50,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:50,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 15:58:50,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:50,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:50,871 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:50,872 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:50,872 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:50,872 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:50,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:58:50,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:50,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 15:58:50,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:50,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:58:50,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:50,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:58:50,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:50,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:50,948 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:50,948 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:50,948 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:50,949 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:50,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 15:58:50,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:50,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 15:58:50,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:50,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:50,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:50,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 15:58:50,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:51,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:51,026 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:51,027 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:51,027 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:51,027 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:51,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:51,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:51,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 15:58:51,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:51,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:51,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:51,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:51,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:51,067 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 15:58:51,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239677272] [2020-09-24 15:58:51,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:51,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 15:58:51,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698155315] [2020-09-24 15:58:51,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 15:58:51,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:51,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 15:58:51,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-24 15:58:51,071 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 14 states. [2020-09-24 15:58:51,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:51,369 INFO L93 Difference]: Finished difference Result 102 states and 111 transitions. [2020-09-24 15:58:51,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 15:58:51,369 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-09-24 15:58:51,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:51,371 INFO L225 Difference]: With dead ends: 102 [2020-09-24 15:58:51,371 INFO L226 Difference]: Without dead ends: 73 [2020-09-24 15:58:51,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2020-09-24 15:58:51,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-24 15:58:51,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 59. [2020-09-24 15:58:51,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-24 15:58:51,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-09-24 15:58:51,382 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 43 [2020-09-24 15:58:51,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:51,383 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-09-24 15:58:51,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 15:58:51,383 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-09-24 15:58:51,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 15:58:51,385 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:51,385 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] [2020-09-24 15:58:51,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 15:58:51,386 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:51,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:51,386 INFO L82 PathProgramCache]: Analyzing trace with hash 444280, now seen corresponding path program 2 times [2020-09-24 15:58:51,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:51,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505378904] [2020-09-24 15:58:51,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:51,459 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:51,459 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:51,459 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:51,459 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:51,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 15:58:51,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:51,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 15:58:51,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:51,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 15:58:51,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 15:58:51,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 15:58:51,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:51,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:51,513 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:51,514 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:51,514 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:51,514 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:51,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:51,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:51,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:51,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:51,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:51,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:51,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:51,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:51,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:58:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:51,585 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:51,586 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:51,586 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:51,586 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:51,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 15:58:51,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:51,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 15:58:51,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:51,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 15:58:51,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:51,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 15:58:51,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:51,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:51,671 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:51,671 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:51,671 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:51,672 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:51,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 15:58:51,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:51,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 15:58:51,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:51,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 15:58:51,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:51,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 15:58:51,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:51,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:51,754 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:51,754 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:51,754 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:51,754 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:51,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:58:51,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:51,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 15:58:51,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:51,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:58:51,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:51,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:58:51,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:51,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:51,832 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:51,832 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:51,833 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:51,833 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:51,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 15:58:51,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:51,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 15:58:51,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:51,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:51,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:51,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 15:58:51,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:51,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:51,909 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:51,909 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:51,909 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:51,909 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:51,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:51,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:51,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:51,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:51,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:51,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:51,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:51,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:51,951 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-24 15:58:51,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505378904] [2020-09-24 15:58:51,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:51,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 15:58:51,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191825113] [2020-09-24 15:58:51,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 15:58:51,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:51,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 15:58:51,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-24 15:58:51,954 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 17 states. [2020-09-24 15:58:52,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:52,293 INFO L93 Difference]: Finished difference Result 114 states and 123 transitions. [2020-09-24 15:58:52,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 15:58:52,294 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2020-09-24 15:58:52,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:52,295 INFO L225 Difference]: With dead ends: 114 [2020-09-24 15:58:52,296 INFO L226 Difference]: Without dead ends: 85 [2020-09-24 15:58:52,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2020-09-24 15:58:52,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-24 15:58:52,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 65. [2020-09-24 15:58:52,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-24 15:58:52,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-09-24 15:58:52,305 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 52 [2020-09-24 15:58:52,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:52,305 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-09-24 15:58:52,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 15:58:52,305 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-09-24 15:58:52,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 15:58:52,307 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:52,307 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] [2020-09-24 15:58:52,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 15:58:52,308 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:52,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:52,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1783783324, now seen corresponding path program 2 times [2020-09-24 15:58:52,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:52,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985444507] [2020-09-24 15:58:52,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:52,439 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:52,439 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:52,440 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:52,440 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:52,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 15:58:52,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:52,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-24 15:58:52,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:52,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 15:58:52,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 15:58:52,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 15:58:52,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:52,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:52,496 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:52,496 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:52,497 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:52,497 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:52,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:52,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:52,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:52,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:52,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:52,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:52,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:52,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:52,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:58:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:52,562 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:52,562 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:52,563 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:52,563 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:52,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 15:58:52,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:52,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 15:58:52,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:52,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 15:58:52,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:52,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-24 15:58:52,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:52,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:52,661 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:52,662 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:52,662 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:52,662 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:52,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 15:58:52,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:52,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 15:58:52,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:52,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 15:58:52,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:52,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 15:58:52,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:52,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:52,752 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:52,753 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:52,753 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:52,753 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:52,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 15:58:52,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:52,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 15:58:52,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:52,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 15:58:52,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:52,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 15:58:52,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:52,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:52,847 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:52,847 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:52,847 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:52,847 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:52,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:58:52,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:52,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 15:58:52,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:52,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:58:52,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:52,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:58:52,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:52,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:52,933 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:52,933 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:52,934 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:52,934 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:52,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 15:58:52,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:52,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 15:58:52,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:52,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:52,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:52,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 15:58:52,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:53,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:53,022 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:53,023 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:53,023 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:53,023 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:53,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:53,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:53,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:58:53,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:53,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:53,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:53,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:53,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:53,070 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 15:58:53,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985444507] [2020-09-24 15:58:53,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:53,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 15:58:53,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610854144] [2020-09-24 15:58:53,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 15:58:53,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:53,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 15:58:53,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-09-24 15:58:53,073 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 20 states. [2020-09-24 15:58:53,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:53,668 INFO L93 Difference]: Finished difference Result 128 states and 137 transitions. [2020-09-24 15:58:53,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 15:58:53,669 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 61 [2020-09-24 15:58:53,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:53,671 INFO L225 Difference]: With dead ends: 128 [2020-09-24 15:58:53,671 INFO L226 Difference]: Without dead ends: 99 [2020-09-24 15:58:53,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=849, Unknown=0, NotChecked=0, Total=930 [2020-09-24 15:58:53,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-09-24 15:58:53,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 71. [2020-09-24 15:58:53,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-24 15:58:53,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-09-24 15:58:53,694 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 61 [2020-09-24 15:58:53,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:53,695 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-09-24 15:58:53,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 15:58:53,695 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-09-24 15:58:53,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 15:58:53,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:53,698 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] [2020-09-24 15:58:53,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 15:58:53,698 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:53,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:53,699 INFO L82 PathProgramCache]: Analyzing trace with hash -756456142, now seen corresponding path program 3 times [2020-09-24 15:58:53,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:53,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180917664] [2020-09-24 15:58:53,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:53,810 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:53,811 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:53,811 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:53,811 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:53,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 15:58:53,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:53,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-24 15:58:53,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:53,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 15:58:53,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-24 15:58:53,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 15:58:53,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:53,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:53,860 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:53,860 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:53,860 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:53,861 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:53,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:53,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:53,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:53,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:53,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:53,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:53,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:53,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:53,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:58:53,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:53,944 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:53,945 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:53,945 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:53,945 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:53,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 15:58:53,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:53,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 15:58:53,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:53,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 15:58:53,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-24 15:58:53,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 15:58:53,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:54,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,098 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:54,098 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:54,098 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:54,098 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 15:58:54,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 15:58:54,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 15:58:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-24 15:58:54,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:54,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,190 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:54,191 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:54,191 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:54,191 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 15:58:54,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 15:58:54,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 15:58:54,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:54,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 15:58:54,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:54,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:54,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,286 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:54,287 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:54,287 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:54,287 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 15:58:54,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 15:58:54,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 15:58:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:54,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 15:58:54,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:54,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,382 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:54,383 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:54,383 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:54,383 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:58:54,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 15:58:54,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:58:54,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:54,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:58:54,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:54,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,475 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:54,475 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:54,475 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:54,476 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 15:58:54,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 15:58:54,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:54,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:54,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 15:58:54,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:54,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:54,582 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:54,582 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:54,583 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:54,583 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:54,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:54,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:54,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 15:58:54,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:54,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:54,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:54,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:54,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:54,679 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 34 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-24 15:58:54,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180917664] [2020-09-24 15:58:54,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:54,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 15:58:54,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548319958] [2020-09-24 15:58:54,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 15:58:54,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:54,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 15:58:54,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-09-24 15:58:54,689 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 20 states. [2020-09-24 15:58:55,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:55,203 INFO L93 Difference]: Finished difference Result 135 states and 143 transitions. [2020-09-24 15:58:55,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 15:58:55,204 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 70 [2020-09-24 15:58:55,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:55,205 INFO L225 Difference]: With dead ends: 135 [2020-09-24 15:58:55,205 INFO L226 Difference]: Without dead ends: 109 [2020-09-24 15:58:55,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=849, Unknown=0, NotChecked=0, Total=930 [2020-09-24 15:58:55,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-24 15:58:55,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 101. [2020-09-24 15:58:55,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-24 15:58:55,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-09-24 15:58:55,225 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 70 [2020-09-24 15:58:55,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:55,225 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-09-24 15:58:55,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 15:58:55,226 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-09-24 15:58:55,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 15:58:55,227 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:55,227 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] [2020-09-24 15:58:55,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 15:58:55,227 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:55,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:55,228 INFO L82 PathProgramCache]: Analyzing trace with hash -242092146, now seen corresponding path program 3 times [2020-09-24 15:58:55,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:55,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339503891] [2020-09-24 15:58:55,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:55,308 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:55,308 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:55,308 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:55,308 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:55,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-24 15:58:55,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:55,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 15:58:55,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:55,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 15:58:55,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 15:58:55,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 15:58:55,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:55,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:55,335 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:55,335 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:55,335 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:55,335 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:55,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:55,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:55,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:55,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:55,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:55,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:55,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:55,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:55,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:58:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:55,407 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:55,407 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:55,407 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:55,407 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:55,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 15:58:55,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:55,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 15:58:55,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:55,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 15:58:55,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 15:58:55,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 15:58:55,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:55,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:55,514 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:55,514 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:55,515 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:55,515 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:55,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 15:58:55,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:55,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 15:58:55,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:55,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 15:58:55,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-24 15:58:55,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 15:58:55,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:55,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:55,633 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:55,633 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:55,634 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:55,634 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:55,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 15:58:55,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:55,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 15:58:55,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:55,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 15:58:55,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:55,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-24 15:58:55,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:55,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:55,736 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:55,737 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:55,737 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:55,737 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:55,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 15:58:55,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:55,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 15:58:55,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:55,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 15:58:55,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:55,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 15:58:55,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:55,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:55,866 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:55,866 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:55,866 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:55,866 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:55,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 15:58:55,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:55,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 15:58:55,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:55,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 15:58:55,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:55,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 15:58:55,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:55,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:55,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:55,945 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:55,945 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:55,945 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:55,946 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:55,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:58:55,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:55,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 15:58:55,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:55,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:58:55,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:55,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:58:55,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:56,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:56,023 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:56,024 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:56,024 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:56,024 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:56,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 15:58:56,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:56,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 15:58:56,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:56,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:56,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:56,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 15:58:56,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:56,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:56,103 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:56,104 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:56,105 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:56,105 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:56,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:56,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:56,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:58:56,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:56,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:56,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:56,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:56,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:56,161 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 26 proven. 34 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-24 15:58:56,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339503891] [2020-09-24 15:58:56,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:56,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 15:58:56,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745497501] [2020-09-24 15:58:56,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 15:58:56,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:56,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 15:58:56,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-09-24 15:58:56,165 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 20 states. [2020-09-24 15:58:56,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:56,644 INFO L93 Difference]: Finished difference Result 117 states and 122 transitions. [2020-09-24 15:58:56,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 15:58:56,644 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 79 [2020-09-24 15:58:56,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:56,645 INFO L225 Difference]: With dead ends: 117 [2020-09-24 15:58:56,645 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 15:58:56,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=849, Unknown=0, NotChecked=0, Total=930 [2020-09-24 15:58:56,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 15:58:56,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 15:58:56,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 15:58:56,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 15:58:56,648 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 79 [2020-09-24 15:58:56,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:56,649 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 15:58:56,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 15:58:56,649 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 15:58:56,649 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 15:58:56,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 15:58:56,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 15:58:56,679 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 15:58:56,680 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 15:58:56,680 INFO L268 CegarLoopResult]: For program point id2FINAL(lines 14 19) no Hoare annotation was computed. [2020-09-24 15:58:56,680 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 15:58:56,680 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 15:58:56,680 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-09-24 15:58:56,680 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 15:58:56,681 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 15:58:56,681 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 15:58:56,681 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 15:58:56,681 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 15:58:56,681 INFO L268 CegarLoopResult]: For program point id2EXIT(lines 14 19) no Hoare annotation was computed. [2020-09-24 15:58:56,681 INFO L271 CegarLoopResult]: At program point id2ENTRY(lines 14 19) the Hoare annotation is: true [2020-09-24 15:58:56,681 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 15:58:56,681 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 15:58:56,681 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 15:58:56,682 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 15:58:56,682 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2020-09-24 15:58:56,682 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 21 27) the Hoare annotation is: true [2020-09-24 15:58:56,682 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 15:58:56,682 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 21 27) no Hoare annotation was computed. [2020-09-24 15:58:56,682 INFO L268 CegarLoopResult]: For program point L24(lines 24 26) no Hoare annotation was computed. [2020-09-24 15:58:56,683 INFO L271 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-09-24 15:58:56,683 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 15:58:56,683 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-24 15:58:56,683 INFO L268 CegarLoopResult]: For program point L24-2(lines 21 27) no Hoare annotation was computed. [2020-09-24 15:58:56,683 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-24 15:58:56,683 INFO L268 CegarLoopResult]: For program point idFINAL(lines 7 12) no Hoare annotation was computed. [2020-09-24 15:58:56,683 INFO L268 CegarLoopResult]: For program point idEXIT(lines 7 12) no Hoare annotation was computed. [2020-09-24 15:58:56,683 INFO L271 CegarLoopResult]: At program point idENTRY(lines 7 12) the Hoare annotation is: true [2020-09-24 15:58:56,684 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-24 15:58:56,684 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 15:58:56,684 INFO L271 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: true [2020-09-24 15:58:56,684 INFO L268 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2020-09-24 15:58:56,684 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 15:58:56,684 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-24 15:58:56,684 INFO L268 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-09-24 15:58:56,685 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-24 15:58:56,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:58:56 BoogieIcfgContainer [2020-09-24 15:58:56,692 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:58:56,695 INFO L168 Benchmark]: Toolchain (without parser) took 9130.15 ms. Allocated memory was 143.7 MB in the beginning and 300.4 MB in the end (delta: 156.8 MB). Free memory was 106.2 MB in the beginning and 109.2 MB in the end (delta: -3.0 MB). Peak memory consumption was 153.8 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:56,696 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 143.7 MB. Free memory was 123.9 MB in the beginning and 123.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 15:58:56,697 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.74 ms. Allocated memory is still 143.7 MB. Free memory was 105.6 MB in the beginning and 96.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:56,698 INFO L168 Benchmark]: Boogie Preprocessor took 112.13 ms. Allocated memory was 143.7 MB in the beginning and 205.5 MB in the end (delta: 61.9 MB). Free memory was 96.0 MB in the beginning and 184.8 MB in the end (delta: -88.8 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:56,698 INFO L168 Benchmark]: RCFGBuilder took 343.49 ms. Allocated memory is still 205.5 MB. Free memory was 184.4 MB in the beginning and 171.1 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:56,699 INFO L168 Benchmark]: TraceAbstraction took 8365.65 ms. Allocated memory was 205.5 MB in the beginning and 300.4 MB in the end (delta: 94.9 MB). Free memory was 170.5 MB in the beginning and 109.2 MB in the end (delta: 61.4 MB). Peak memory consumption was 156.3 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:56,702 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 143.7 MB. Free memory was 123.9 MB in the beginning and 123.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 294.74 ms. Allocated memory is still 143.7 MB. Free memory was 105.6 MB in the beginning and 96.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.13 ms. Allocated memory was 143.7 MB in the beginning and 205.5 MB in the end (delta: 61.9 MB). Free memory was 96.0 MB in the beginning and 184.8 MB in the end (delta: -88.8 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 343.49 ms. Allocated memory is still 205.5 MB. Free memory was 184.4 MB in the beginning and 171.1 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8365.65 ms. Allocated memory was 205.5 MB in the beginning and 300.4 MB in the end (delta: 94.9 MB). Free memory was 170.5 MB in the beginning and 109.2 MB in the end (delta: 61.4 MB). Peak memory consumption was 156.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.1s, OverallIterations: 10, TraceHistogramMax: 4, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 438 SDtfs, 96 SDslu, 4462 SDs, 0 SdLazy, 1592 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 293 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 85 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 448 NumberOfCodeBlocks, 448 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 438 ConstructedInterpolants, 0 QuantifiedInterpolants, 88254 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 132/254 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...